Details of a Researcher - SIRINGORINGO Dionysius Manly

Stereovision-based vibration measurement of stay cable using synchronized multi-camera setup and video motion magnification

Language：English Publishing type：Research paper (scientific journal) Joint Work

Le, LX; Siringoringo, DM; Katsuchi, H; Fujino, Y; Luong, BX

ENGINEERING STRUCTURES 296 2023.12

Predicting bridge longitudinal displacement from monitored operational loads with hierarchical CNN for condition assessment

Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Joint Work

Sun, Z; Sun, MJ; Siringoringo, DM; Dong, Y; Lei, XM

MECHANICAL SYSTEMS AND SIGNAL PROCESSING 200 2023.10

Interpretable machine learning methods for clarification of load-displacement effects on cable-stayed bridge

Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Joint Work

Lei, XM; Siringoringo, DM; Dong, Y; Sun, Z

MEASUREMENT 220 113390 2023.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier {BV} Joint Work

Long-term continuous seismic monitoring of multi-span highway bridge and evaluation of bearing condition by wireless sensor network

Siringoringo Dionysius M., Fujino Yozo, Suzuki Makoto

ENGINEERING STRUCTURES 276 2023.2

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Cumulative displacement-based detection of damper malfunction in bridges using data-driven isolation forest algorithm

Sun Zhen, Siringoringo Dionysius M., Chen Shi-zhi, Lu Jun

ENGINEERING FAILURE ANALYSIS 143 2023.1

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Seismic design and performance evaluation of typical lightweight and heavyweight RC girder bridges with friction pendulum bearing in Indonesia

Moestopo Muslinang, Imran Iswandi, Siringoringo Dionysius M., Michael James, Lim Erwin, Yamazaki Sh … Show more authors

STRUCTURES 46 1154 - 1170 2022.12

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Condition assessment of seismically isolated multi-span highway bridge bearings using recorded and simulated seismic responses

Xu Yunsong, Siringoringo Dionysius M., Fujino Yozo

ADVANCES IN STRUCTURAL ENGINEERING 25 ( 16 ) 3299 - 3315 2022.12

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Displacement response estimation of a cable-stayed bridge subjected to various loading conditions with one-dimensional residual convolutional autoencoder method

Lei Xiaoming, Siringoringo Dionysius M., Sun Zhen, Fujino Yozo

STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL 2022.8

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Simulations on Reliability-based Safety Assessment of Vehicles Crossing Highway Interchanges during Earthquakes

Siringoringo Dionysius M., Fujino Yozo

JOURNAL OF EARTHQUAKE ENGINEERING 27 ( 8 ) 2061 - 2087 2022.7

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Modal analysis and tension estimation of stay cables using noncontact vision-based motion magnification method

Wangchuk Samten, Siringoringo Dionysius M., Fujino Yozo

STRUCTURAL CONTROL & HEALTH MONITORING 29 ( 7 ) 2022.7

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Stay cable tension estimation of cable-stayed bridge under limited information on cable properties using artificial neural networks

Le Luu Xuan, Siringoringo Dionysius M., Katsuchi Hiroshi, Fujino Yozo

STRUCTURAL CONTROL & HEALTH MONITORING 29 ( 10 ) 2022.6

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Implementation of Wireless Sensor Network for Continuous Seismic Monitoring of Isolated Cable-Stayed Bridge

Siringoringo Dionysius M., Fujino Yozo, Suzuki Makoto, Mehta Vaibhav

JOURNAL OF BRIDGE ENGINEERING 27 ( 4 ) 2022.4

Seismic performance of reinforced concrete buildings with double concave friction pendulum base isolation system: case study of design by Indonesian code

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Imran Iswandi, Siringoringo Dionysius M., Michael James

STRUCTURES 34 462 - 478 2021.12

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Influence of movable bearings performance on the dynamic characteristics of a cable-stayed bridge : insights from seismic monitoring records

Siringoringo Dionysius M., Fujino Yozo

BULLETIN OF EARTHQUAKE ENGINEERING 20 ( 9 ) 4639 - 4671 2021.11

Noncontact operational modal analysis of light poles by vision-based motion-magnification method

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Dionysius M. Siringoringo; Samten Wangchuk; Yozo Fujino

Engineering Structures 244 112728 2021.10

Other Link： https://reader.elsevier.com/reader/sd/pii/S0141029621008786?token=9D40EA6BE4D7ADC744DE3B0C1F1FDE0F28BB247070B853F88CB3247B1461A9A5EF76F8DADA271284CC51E404998C79DA&originRegion=us-east-1&originCreation=20210715062652

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Light and sign poles on elevated highway bridge are secondary structural elements that support functionality of a highway system. Over the time, they may suffer from fatigue damage due to traffic, wind, and earthquake- induced vibration in a direct or indirect manner. As a secondary structural component, vibrations of light and sign poles are influenced by the bridge vibration, the primary structure. Structural condition assessment of the light and sign poles are normally conducted by visual inspection and/or vibration measurement using contact or noncontact method. In this paper, a vision-based vibration measurement of the light poles on elevated highway bridges using motion magnification and dynamic mode decomposition methods is proposed. Using the method, vibrations of the light poles are captured by video camera and the phase-based motion magnification method is implemented to magnify micro-vibration of the structure. By employing discretized centroid searching method, spatial displacements of the light poles are extracted. Modal parameters of the structure are then identified from the displacement responses by dynamic mode decomposition method. The study includes laboratory experiments for verification, and the full-scale implementation on existing light poles on elevated highway bridges. The vision-based results are compared with the noncontact vibration measurement using Laser-Doppler vibrometers. Results of experiments and full-scale tests demonstrate the capability of the proposed method in extracting multi- mode vibration characteristics of the light poles accurately in a noncontact long-distance measurement.

Research and development for infrastructure maintenance, renovation, and management

Yozo Fujino; Dionysius M. Siringoringo

Proceedings of the Second International Conference on Press-in Engineering 2021, Kochi, Japan 3 - 12 2021.6 [Reviewed] [Invited]

Seismic performance evaluation of existing light poles on elevated highway bridges

Language：English Publishing type：Research paper (international conference proceedings) Publisher：CRC Press Joint Work

The collapse of Sasago Tunnel, located on the Chuo Expressway about 80 kilometers west of Tokyo in 2012, has led to questions about the current quality and safety of infrastructure, and immediately brought public attention to the issue of infrastructure degradation in Japan. Japanese government decided to invest on the research and development for efficient management of infrastructure through implementation of science and advanced technologies. The new research and development (R & D) program named “Infrastructure maintenance, renovation and management” is started in 2014 under the Council of Science, Technology and Innovation (CSTI)’s Strategic Innovation Program (SIP). The 5-year program covers various subjects of infrastructure maintenance with the key technologies in condition assessment using advanced technologies such as non-destructive testing, monitoring and robotics, long-term performance prediction of infrastructure, development of durable high-quality of material for repair and replacement, and data management of bridges and other infrastructure using advanced information and communication technologies (ICT). In this paper, outline and outcomes of this program are explained.

Dionysius M. Siringoringo, Yozo Fujino, Ayami Nagasaki, Takuro Matsubara

STRUCTURE AND INFRASTRUCTURE ENGINEERING 17 ( 5 ) 720 - 740 2021.5 [Reviewed]

Investigation on vehicle lateral instability when crossing a curved highway bridge during an earthquake

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis Joint Work

Damages on light poles and utility poles mounted on elevated highway or railway bridges were
observed in the past several large earthquakes. They were mostly due to excessive pole deformation,
bending failure caused by yielding, buckling of the pole and falling of the mast. The damages did not
only affect functionalities but also impeded the traffic and further complicated post-earthquake recovery
of affected area. While seismic resistance of elevated highway bridges has been evaluated and
upgraded in the seismic codes, most light and utility poles were designed for wind loading and not
for earthquake, so their seismic performances were rarely evaluated. In this research, seismic performance
of a typical light pole mounted on elevated highway bridges is investigated. The study includes
experimental modal analysis of existing light pole, finite element simulation, and case study of the
light pole on existing elevated highway bridge. The results of finite element simulations show that
response amplification occurs when the bridge’s natural frequency is within a close range of the light
pole’s fundamental frequency. Due to inherently low structural damping, the light pole experiences
large amplification at the resonance, and this leads to bending failure when the maximum stress
exceeds the yield stress limit.

Other Link： https://www.tandfonline.com/doi/abs/10.1080/15732479.2020.1760894

Dionysius M. Siringoringo,Yozo Fujino,Masaaki Yabe

Structure and Infrastructure Engineering 17 ( 5 ) 720 - 740 2021.5 [Reviewed]

Computational Fluid Dynamics Simulation and Stability Analysis of Vehicle on Bridge under Strong Winds

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis Joint Work

This paper describes a numerical study on the vehicle instability when crossing curved highway bridge during an earthquake. Analytical framework using two-axle vehicle dynamics model is developed to describe vehicle vibration when moving under seismic excitation from the curved bridge girder. The model includes out-of-plane and in-plane motion along with the effect of curved girder with specific radius, camber angle and longitudinal grade. Two criteria for critical vehicle stability are evaluated namely the rollover and sideslip stability. As case study, numerical simulations were conducted using three-dimensional finite element model of an elevated highway junction consisting of four curved sections and two straight sections. Effects of curved bridge radii, level of earthquake, vehicle velocity and driver reaction on the vehicle stability were investigated. It was found that a vehicle moving on a curved bridge during earthquake has a larger possibility for rollover and sideslip instability than a vehicle moving on a straight section for the same driving velocity and level of earthquake. Results of simulations demonstrate that normal forces on vehicle’s wheels are significantly influenced by the curved bridge effects, steering angle, effect of road camber at the curved section. These conditions contributed to reduction of normal forces on vehicle’s wheels and increased the risk of vehicle instability.

Other Link： https://www.tandfonline.com/doi/abs/10.1080/15732479.2020.1766515

Operational modal analysis of light pole-viaduct system from video measurements using phase-based motion magnification

T.J. Saravanan, D.M. Siringoringo, Y. Fujino, S. Wangchuk

Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations 2021.5 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Publisher：CRC Press Joint Work

Operational modal analysis (OMA) usually involves conventional sensors (wired or wireless) for vibration measurement of structures to determine the modal characteristics. This type of measurement requires sensors installation which can be time consuming and labor intensive. Video camera-based noncontact vision sensing has emerged as a promising alternative to conventional contact sensors for structural dynamic response measurement and health monitoring. Such vision sensors are relatively easy and agile to set up and provide significantly more high-spatial-density measurements where any pixel could become a measurement point. Recently, advanced computer vision algorithms like phase-based video motion magnification technique have been successfully developed to effectively process large-scale image/video data for extracting detailed structural dynamic information under small amplitude motion. The objective of this paper is to explore the potential use of phase-based video motion magnification method for OMA of civil structures. At first, a preliminary study on is carried out on a two-degree-of-freedom frame model at laboratory. Using image processing technique, the corresponding displacement is extracted from the magnified video frames and the natural frequency of the structural system is computed and verified with the reference wireless accelerometer sensors. Later, the method was implemented to practical field measurements using for modal identification and vibration measurements of existing light poles on a highway bridge. Results from both experiments suggest that the method could be used to obtain natural frequency of the structures under ambient condition where vibration amplitudes are very small and invisible.

Kim, Haeyoung ; Fujino, Yozo ; Katsuchi, Hiroshi ; Siringoringo, Dionysius Manly ; Yamada, Hitoshi … Show more authors

Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 77 ( 1 ) 107 - 120 2021.2 [Reviewed]

DOI CiNii Research

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers (JSCE) Joint Work

This paper describes an investigation on vehicle stability when crossing a bridge under strong wind by Computational Fluid Dynamics (CFD) and vehicle dynamics stability model. Large Eddy Simulation (LES) was implemented in the CFD to compute time-histories of vehicle's aerodynamic force coefficients when moving on the bridge at different traffic lanes. The aerodynamic force coefficients were later utilized to compute wind loads on the vehicle, based on which vibration and stability of vehicle were evaluated using vehicle dynamics model. Simulation results show that the flow fields around vehicle vary for each traffic lane and they were strongly influenced by the shear layer separated from leading edge of the bridge girder. As a result, the aerodynamic characteristics acting on the vehicle and the normal force on each wheel vary according to the traffic lane. Critical conditions of vehicle instability are defined as overturning and sideslip or yawing. The critical wind speed associated with each condition is defined as the wind speed that causes the normal force on one of the wheels becomes zero. Analyses demonstrate that the lowest critical wind speed occurs when the vehicle moves on the windward lane and it increases toward the leeward lanes. It is also observed that at any lanes, the critical condition for yawing instability occurs at a lower wind speed than the critical condition for overturning instability.

Other Link： https://www.jstage.jst.go.jp/article/jscejseee/77/1/77_107/_article/-char/ja/

Wavelet-Based Analysis for Detection of Isolation Bearing Malfunction in a Continuous Multi-Span Girder Bridge

Dionysius M. Siringoringo; Yozo Fujino

Journal of Earthquake Engineering 26 ( 10 ) 5237 - 5267 2021.2 [Reviewed]

Load-carrying capacity evaluation of girder bridge using moving vehicle

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis Single Work

This paper describes techniques for detecting bearing malfunction directly from the seismic response of the bridge using wavelet transform time-varying identification. Instantaneous frequency of continuous wavelet and detail components of discrete wavelet transform are utilized as structural features, and they characterize isolation bearing condition via statistical clustering technique. Accuracy and efficacy of the techniques were verified in numerical simulations using analytical and finite element models. The techniques were implemented on seismic records from long-term monitoring of multi-span continuous-girder isolated bridge. Results demonstrate that wavelet-based features can effectively characterize the condition of the isolation bearing directly from seismic responses of girder and piers.

Other Link： https://www.tandfonline.com/doi/full/10.1080/13632469.2020.1868363?scroll=top&needAccess=true

Zhen Sun; Dionysius M.Siringoringo; Yozo Fujino

Engineering Structures 229 111645 - 111535 2021.2 [Reviewed]

Other Link： https://reader.elsevier.com/reader/sd/pii/S0141029620342462?token=8383BE301025C618639468799DC5F70FF1F9893669CBA9C1BFCD8EA7E3C058DEBAFD45C724EDA2BB78BE7B6CA7D35323&originRegion=us-east-1&originCreation=20210715061111

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Efficient and reliable load-carrying capacity evaluation of deficient bridges is essential for bridge maintenance and management. Based on load-carrying capacity evaluation of an existing bridge, operator can formulate strategies and implement countermeasures such as repair, strengthening or traffic regulation. Currently, static load test is used widely for evaluation of bridge load-carrying capacity. The test, however, is often considered expensive and requires massive traffic closure that hinders frequent implementation on highway or bridges in the rural area. In this paper, an efficient method for load-carrying capacity evaluation of girder bridges based on displacement under moving vehicle is proposed. The method consists of three main procedures, namely, radar- based dynamic displacement measurement under truck pass-by test, influence line extraction, and estimation of the displacement under the static load test scenario. Based on these procedures, evaluation of load-carrying capacity is conducted following the AASHTO manual. The method was verified in numerical simulations using three-dimensional finite element model of typical girder bridge under vehicle loading. Effects of vehicle weight, vehicle speed, and road roughness on the accuracy of displacement estimation were investigated in the numerical simulations. Full-scale implementation of the method was conducted on a simply supported prestressed concrete girder bridge to investigate feasibility of the proposed method and to provide guidance for practical application. The results reveal that load rating factor of the girders can be reliably evaluated. The evaluation process was also more effective and economical than the conventional method.

Implementation of video motion magnification technique for non-contact operational modal analysis of light poles

Jothi S. Thiyagarajan, Dionysius M. Siringoringo, Samten Wangchuk and Yozo Fujino

Smart Structures and Systems 27 ( 2 ) 227 - 239 2021.2 [Reviewed]

Seismic monitoring of cable-stayed bridge using wireless sensor network

Language：English Publishing type：Research paper (scientific journal) Publisher：Techno Press Services Joint Work

Damages on lights and utility poles mounted on the elevated highway or railway bridges were observed in the past several large earthquakes. The damages could have serious consequences to public safety, travelling vehicles or trains, and nearby properties. A previous study shows that the damages were caused by buckling and yielding of the pole due to excessive response amplification during large earthquake. Such amplification occurs when the bridge's natural frequency is close to the light pole's fundamental frequency. An investigation of the seismic performance of existing light pole mounted on elevated highway bridges is needed to avoid the response amplification. This includes the identification of the light pole's natural frequency and damping ratio. Vibration testing of the light pole using conventional contact sensors individually would require enormous effort and is time-consuming. Moreover, such vibration testing on a highway bridge deck would require traffic disruption to provide access. Video camera-based non-contact vision sensing is seen as a promising alternative to the conventional contact sensors for this purpose. The objective of this paper is to explore the use of non-contact vision sensing for operational modal analysis of light pole on highway viaduct. The phase-based video motion magnification method is implemented to obtain the light pole response in an ambient condition. Using this method, small and invisible displacement is magnified for a certain range of frequency of interest. Based on the magnified video frames, structural displacement is extracted using the image processing technique. The natural frequency and damping ratio of the light pole are estimated using the random decrement technique. The method is verified in a laboratory-scale experiment and implemented to practical field measurements of a light pole on a highway viaduct in Kanagawa, Japan. The results are compared with measurement by Laser Doppler Vibrometer. Both experiments suggest that the method could effectively obtain the natural frequency and damping ratio of the structures under the ambient condition where vibration amplitudes are very small and invisible with reasonable accuracy.

Other Link： http://www.techno-press.org/content/?page=article&journal=sss&volume=27&num=2&ordernum=7

Siringoringo D. M., Fujino Y., Mehta V, Kazui Y., Suzuki M.

BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS 3060 - 3067 2021

Operational modal analysis of light pole-viaduct system from video measurements using phase-based motion magnification

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Saravanan T. J., Siringoringo D. M., Fujino Y., Wangchuk S.

BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS 1629 - 1637 2021

Investigation of Damage on Structural Connections of Arakawa Wangan Steel Truss Bridge during the 2011 Off Pacific Coast Tohoku Earthquake

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Miku Fujii, Yozo Fujino, Dionysius Siringoringo, Kenji Namikawa, Masaaki Yabe, Chi Shen

Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76 ( 2 ) 292 - 311 2020.7 [Reviewed]

DOI CiNii Research

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Several structural connections of the Arakawa-Wangan (steel truss bridge in the Tokyo Metropolitan
Expressway) were ruptured or heavily deformed during the main shock of 2011 Great East Japan Earthquake.
The bridge, built in 1978, was under seismic retrofit at the time of the earthquake, but the seismic
retrofit plan did not include retrofit of structural connections. In this study, we perform seismic response
analysis of the bridge using frame model followed by detailed finite element analysis of the damaged connections and their adjacent structural members. Results of analyses are consistent with the observed damage on connections. This study emphasizes the importance of performance evaluation of steel truss bridge structural connections in the seismic design.

Other Link： https://www.jstage.jst.go.jp/article/jscejseee/76/2/76_292/_article/-char/ja/

Recent research and development programs for infrastructures maintenance, renovation and management in Japan

Yozo Fujino, Dionysius M. Siringoringo

STRUCTURE AND INFRASTRUCTURE ENGINEERING 16 ( 1 ) 3 - 25 2020.1 [Reviewed]

Historical and Technological Developments of Steel Bridges in Japan—A Review

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis Joint Work

Other Link： https://www.tandfonline.com/doi/full/10.1080/15732479.2019.1650077

Yozo Fujino, Dionysius M. Siringoringo

Steel Construction 35 ( 1 ) 34 - 58 2020.1 [Reviewed] [Invited]

Seismic Monitoring of Cable-stayed Bridge Using Wireless Sensor Network

Language：English Publishing type：Research paper (scientific journal) Publisher：China Steel Construction Society Joint Work

Other Link： http://gjg.ic-mag.com/en/article/doi/10.13206/j.gjgSE19112604

DIONYSIUS M. SIRINGORINGO, YOZO FUJINO, MAKOTO SUZUKI, VAIBHAV MEHTA

Structural Health Monitoring 2019 Enabling Intelligent Life-cycle Health Management for Industry Internet of Things (IIOT) 2 2551 - 2558 2019.11 [Reviewed]

Research and Implementations of Structural Monitoring for Bridges and Buildings in Japan

Language：English Publishing type：Research paper (international conference proceedings) Publisher：DEStech Publications Inc. Joint Work

This paper describes an ongoing research work on the seismic monitoring of cable-stayed bridge using wireless sensor network. Newly developed wireless sensor network that is based on simultaneous high-speed flooding technique is found efficient in transmitting the packets at the same timing without causing synchronization to the carrier frequency or phase. The wireless network monitoring system was implemented on the Shin-Nakagawa Bridge, 530-m single-plane single-pylon steel-box girder cablestayed bridge in Ibaraki prefecture in Japan. The structure is seismically isolated with rubber bearings and damper at the main pylon and piers. A total of 27 sensor nodes were installed on the cable-stayed bridge and viaduct at several locations on the pier, main pylon, girder and on the ground. The monitoring system has been in place since the summer 2017 and successfully recorded structural responses from more than twelve small-to-moderate scale earthquakes. This paper explains the wireless sensor system, monitoring system and analysis of recorded earthquakes.

Other Link： http://www.dpi-proceedings.com/index.php/shm2019/article/view/32394

Yozo Fujino,Dionysius M.Siringoringo,Yoshiki Ikeda,Tomonori Nagayama,Tsukasa Mizutani

Engineering 5 ( 6 ) 1093 - 1119 2019.9 [Reviewed]

Seismic Monitoring of Seismically Isolated Bridges and Buildings

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://www.sciencedirect.com/science/article/pii/S209580991930829X

Yozo Fujino,Dionysius M. Siringoringo,Masaru Kikuchi,Kazuhiko Kasai,Toshihide Kashima

Seismic Structural Health Monitoring From Theory to Successful Applications 407 - 447 2019.4 [Reviewed]

Seismic response of a suspension bridge: Insights from long-term full-scale seismic monitoring system

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work

Other Link： https://link.springer.com/chapter/10.1007/978-3-030-13976-6_17

Dionysius M. Siringoringo , Yozo Fujino

STRUCTURAL CONTROL & HEALTH MONITORING 25 ( 11 ) 2018.11 [Reviewed]

Lateral Stability of Vehicles Crossing a Bridge during an Earthquake

Language：English Publishing type：Research paper (scientific journal) Publisher：wiley Joint Work

Other Link： https://onlinelibrary.wiley.com/doi/full/10.1002/stc.2252

23 ( 4 ) 04018012-1 - 04018012-22 2018.4 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29BE.1943-5592.0001211

Structures with Added Buckling Restrained Brace Elements

Purba D., Imran I., Moestopo M., Watanabe A., Hikino T., Siringoringo D.

ELECTRONIC JOURNAL OF STRUCTURAL ENGINEERING 18 ( 1 ) 1 - 12 2018 [Reviewed]

Wind Effects and Dynamics Characteristics of Base-Isolated Building based on Full-scale measurement during Typhoons

Language：English Publishing type：Research paper (scientific journal) Joint Work

Dionysius M. Siringoringo, Yozo Fujino

X International Conference on Structural Dynamics, EURODYN 2017 199 2256 - 2261 2017.9 [Reviewed]

Other Link： https://reader.elsevier.com/reader/sd/pii/S1877705817336664?token=AA8CEA862CE3D273D7A07AA90938FCBFC624530682380D885914BF0B1033973786B40043697AFAEA284C07DA96C87684

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Single Work

Long-term Seismic Monitoring of a Long-span Suspension Bridge

Dionysius M. Siringoringo, Yozo Fujino

Proc. of 7th World Conference on Structural Control and Monitoring, 7WCSCM, Qingdao, China 2017.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Wind-induced responses and dynamics characteristics of an asymmetrical base-isolated building observed during typhoons

Dionysius M.Siringoringo, YozoFujino

Journal of Wind Engineering and Industrial Aerodynamics 167 183 - 197 2017.5 [Reviewed]

Other Link： https://reader.elsevier.com/reader/sd/pii/S0167610516303920?token=8AA6D214D7DE55BDA4DC4187E5AD0EAEB1F195B658C8B26B12FF6D81DAA663228A454382ED00F2058187CDEEF2400551

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Over twenty years seismic monitoring experience of cable-stayed bridge: lessons learned on structural assessments

Dionysius M. Siringoringo, Yozo Fujino

Proceeding of 16th World Conference on Earthquake Engineering (16th WCEE), Santiago Chile 2017.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Other Link： http://www.wcee.nicee.org/wcee/article/16WCEE/WCEE2017-3975.pdf

Along-wind almost-harmonic vibration observed at Hakucho-Bridge pylons and its wind tunnel experiments

Tsukasa Mizutani, Toshihiko Kobayashi, Yozo Fujino, Dionysius Siringoringo

Journal of Wind Engineering JAWE 41 ( 4 ) 136 - 147 2016.10 [Reviewed]

Seismic Response Analysis of Hakucho Suspension Bridge from Long-term Monitoring System

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Association for Wind Engineering Joint Work

This paper describes an along-wind vibration of frame-type pylons of Hakucho Suspension Bridge found from long-term vibration monitoring data. It is shown that the vibration is very harmonic although its amplitude is small and it occurs under certain ranges of wind direction (10~30 degree from the bridge perpendicular axis) and of wind velocity (13~25 m/s). The dominant frequency of the vibration is either 0.6 Hz or 0.8 Hz depending on the wind velocity and these correspond to the natural frequencies of the in-plane pylon dominant modes of the suspension bridge. A series of the wind tunnel experiments using a spring-supported scaled model are conducted under uniform flow and the along-wind pylon vibration was observed and its vibration characteristics is found to be consistent to those observed in Hakucho Bridge. It is also found that the vibration is very sensitive to the incident angle of wind and to the distance between the two columns.

Other Link： https://doi.org/10.5359/jwe.41.136

Dionysius M. Siringoringo, Yozo Fujino

IABSE Report ( 109 ) 1872 - 1879 2016.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://structurae.net/de/fachliteratur/tagungsbeitrag/seismic-response-analysis-of-hakucho-suspension-bridge-from-long-term-monitoring-system

A Conceptual Review of Pedestrian-Induced Lateral Vibration and Crowd Synchronization Problem on Footbridges

Yozo Fujino and Dionysius M. Siringoringo

Journal of Bridge Engineering ASCE 21 ( 8 ) C4015001 2016.8 [Reviewed]

Japan's experience on long-span bridges monitoring

Language：English Publishing type：Research paper (scientific journal) Publisher：ASCE-AMER SOC CIVIL ENGINEERS Joint Work

Modern footbridges are often characterized by architectural demands for light, slender, and long structures that may lead to excessive vibration problems. In past decades, occurrences of pedestrian-induced vibration on footbridges have been reported, notably at the Toda Bridge in Japan, the Millennium Bridge in London, and the Solferino in Paris. In 1989, we observed a peculiar type of lateral vibration at the Toda Bridge during the passing of congested crowds. Hundreds of pedestrians walked in a synchronized manner among themselves, which created remarkable lateral vibration in the structure. Approximately 10 years later, public attention on pedestrian-induced lateral vibration increased significantly when the Solferino Bridge in Paris and the Millennium Bridge in London showed a similar phenomenon during the passing of congested crowds. These three most well-known cases have triggered extensive study, and pedestrian-induced vibration has emerged as an important topic in vibration study. A considerable amount of research, experiments, published reports, and design guidelines on this topic has been produced over the last two decades. The intriguing questions regarding the phenomenon are, how do we formulate lateral pedestrian force, and how do we conceptualize excitation and synchronization mechanisms? To find the answers, many models have been proposed and validated numerically or experimentally. This paper is aimed at providing a critical conceptual review on the development of studies on pedestrian-induced lateral vibration of footbridges. Focus is placed on the development of pedestrian load modeling, the conceptualization of excitation and synchronization mechanisms, design guidelines, and vibration countermeasures.

Other Link： https://ascelibrary.org/doi/10.1061/%28ASCE%29BE.1943-5592.0000822

Yozo Fujino, Dionysius Siringoringo, Masato Abe

Structural Monitoring and Maintenance ( 3 ) 233 - 257 2016

Long-term seismic monitoring of base-isolated building with emphasis on serviceability assessment

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： http://www.techno-press.org/content/?page=article&journal=smm&volume=3&num=3&ordernum=3

Dionysius M. Siringoringo and Yozo Fujino

Earthquake Engineering & Structural Dynamics 44 ( 4 ) 637 - 655 2015.4 [Reviewed]

Seismic response analyses of an asymmetric base-isolated building during the 2011 Great East Japan (Tohoku) Earthquake

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY-BLACKWELL Joint Work

Seismic monitoring system provides opportunities to observe possible damage or failure and weakening of structural components and to evaluate serviceability performance of a structure during an earthquake. This can be achieved by comparing structure recordings before and after the event or by identifying significant change in characteristics of structural response that may serve as indicators of failure or damage in progress. Excessive vibration on some parts of structure may become a serviceability concern for some buildings, and this also can be detected from continuous monitoring. Several factors such as characteristics of ground motion, soil condition, and geometry of the structure could cause excessive localized structural vibration, and by evaluating the responses, one can take remedial action. For a base-isolated building in particular, reduction of response of upper stories is critical to protect nonstructural elements or sensitive equipments on the building. In this paper, we describe a case study on seismic monitoring of a base-isolated building with the main focus on evaluation of serviceability performance. The study emphasizes on a influence of building asymmetricity on the seismic response. Results of the study are based on a long-term building seismic monitoring program for over 3years between 2010 and 2012 under various amplitudes of earthquake including the March 11, 2011 Great East-Japan Earthquake. Copyright (c) 2014 John Wiley & Sons, Ltd.

Other Link： https://onlinelibrary.wiley.com/doi/full/10.1002/eqe.2538

Dionysius M. Siringoringo and Yozo Fujino

Structural Control and Health Monitoring 22 ( 1 ) 71 - 90 2015.1 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY-BLACKWELL Joint Work

Analysis of strong motion recordings of a base-isolated building during the March 11, 2011, Great East Japan (Tohoku) Earthquake is reported in this paper. The building, located in Tokyo Bay area, is an asymmetric L-shaped structure consisting of seven-story and 14-story building with vertical opening. Vibration monitoring system was installed on the building in 2010, and seismic responses were recorded including the strongest shaking (peak ground acceleration 0.80-1.40m/s(2)) experienced during the main shock of March 11, 2011, Great East Japan Earthquake. The building survived the earthquake without structural damage. The study in this paper includes response analysis, system identification, and seismic performance evaluation of the structure, especially performance of base-isolation system. The study shows that despite considerable shift in effective frequency of the building due to the increase in flexibility of isolation system during the main shock, large acceleration was recorded on the superstructure with the peak floor accelerations of nearly 300cm/s(2). Two factors contribute to this cause: one is the characteristics of the building where torsional modes dominate the seismic response of upper stories and the other is resonance, where dominant frequencies of ground motions coincide with the natural frequencies of torsional modes. Moreover, analysis shows that torsional modes were not significantly influenced by performance of base isolation, so that even though the base isolation has functioned properly, the upper stories still experienced large floor accelerations. The paper also discusses long-term observation of seismic responses during aftershocks and various levels of earthquakes between 2010 and 2012. Copyright (c) 2014 John Wiley & Sons, Ltd.

Other Link： https://onlinelibrary.wiley.com/doi/full/10.1002/stc.1661

Analysis of Tower-Girder Transfer Pounding on the Yokohama-Bay Cable-Stayed Bridge during 2011 Great East Japan Earthquake

Dionysius M Siringoringo, Gotaro Takamoto, Yozo Fujino

IABSE Symposium Report ( 108 ) 1 - 8 2015

Language：English Publishing type：Research paper (scientific journal) Joint Work

Failure analysis of the hanger clamps of the Kutai-Kartanegara Bridge from the fracture mechanics viewpoint

Yuta KAWAI, Dionysius M. Siringoringo, Yozo Fujino

Journal of JSCE 2 ( 1 ) 1 - 6 2014

Language：English Publishing type：Research paper (scientific journal) Joint Work

Seismic Response Analyses of the Yokohama Bay Cable-Stayed Bridge in the 2011 Great East Japan Earthquake

Dionysius M. Siringoringo, Yozo Fujino, Kenji Namikawa

Journal of Bridge Engineering ASCE 19 ( 8 ) 2014

Development and validation of nonlinear computational models of dispersed structures under strong earthquake excitation

Language：English Publishing type：Research paper (scientific journal) Joint Work

Armen Derkevorkian, Sami F. Masri, Yozo Fujino, Dionysius M. Siringoringo

Earthquake Engineering & Structural Dynamics 43 ( 7 ) 1089 - 1105 2014

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://onlinelibrary.wiley.com/doi/full/10.1002/eqe.2389

Dynamic Characteristics of an Overpass Bridge in a Full-Scale Destructive Test

Dionysius M. Siringoringo, Yozo Fujino, and Tomonori Nagayama

J. Engineering Mechanics ASCE 139 691 - 701 2013 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Vibration Mechanisms and Controls of Long-span Bridges: A Review

Yozo Fujino, Dionysius M. Siringoringo

J. Structural Engineering International 23 ( 3 ) 248 - 268 2013

INVESTIGATION OF THE YOKOHAMA-BAY CABLE-STAYED BRIDGE SEISMIC RESPONSE CHARACTERISTICS SUBJECTED TO THE 2011 GREAT EAST-JAPAN EARTHQUAKE

Language：English Publishing type：Research paper (scientific journal) Joint Work

FUJINO Yozo,SIRINGORINGO Dionysius,NAMIKAWA Kenji,YABE Masaaki

Journal of Japan Society Civil Engineering 69 ( 2 ) 372 - 391 2013

SHEAR FAILURE ANALYSIS OF THE CABLE BAND'S PIN CLAMP OF THE COLLAPSED KUTAI-KARTANEGARA SUSPENSION BRIDGE

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineering Joint Work

On March 11, 2011, the Great East-Japan earthquake with M<sub>w</sub> 9.0, the largest ever recorded in Japan, shook northeastern part of Japan and was strongly felt in the Yokohama-Bay Bridge area with the JMA seismic intensity 5- (lower 5). Yokohama-Bay Bridge with the total span length of 860m is densely instrumented with vibration sensors that record seismic excitation during the main shock and several after-shocks. These series of seismic responses create the most comprehensive set of data on the response of long-span cable-stayed bridge subjected to multiple-support excitation. This paper describes investigation of seismic records by focusing on temporal and spectral analysis of the bridge accelerations, dynamic characteristics of the bridge and their changes throughout the excitation, investigation of response non-linearity during large excitation, performance evaluation of the seismic isolation device: link-bearing connection between girder and towers, and the post-earthquake field observation. Seismic response of the bridge is dominated by transverse vibration; where the girder transverse vibration reached the maximum displacement of 62cm. Investigation shows that link-bearing connection functioned properly during the earthquake to accommodate girder longitudinal movement, while on lateral direction pounding at the wind shoe may have occurred. Changes in natural frequencies were observed during large excitation followed by the change in vertical-transverse coupling behavior of the mode shape. Despite the strong shaking, there was no significant structural damage observed on the bridge since the ground motions experienced was still far below the design and seismic retrofit ground motions.

Other Link： https://doi.org/10.2208/jscejseee.69.372

KAWAI Yutaka,SIRINGORINGO Dionysius M.,FUJINO Yozo

Journal of Japan Society Civil Engineering 69 ( 2 ) 410 - 415 2013