Papers - KOMATSU Satoshi
about 86-
A Python-Based Framework for Automated Mesh Generation from IFC Data
Stanislav ZAŽIREJ , Satoshi KOMATSU and Taiju YONEDA
COMPSAFE2025 2025.7 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Single Work
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ANALYSIS OF SEISMIC RESPONSE OF CIRCULAR SHAFT IN DENSE SANDY GROUND WITH UNSATURATED SOIL
Satoshi KOMATSU, Toyofumi MATSUO, Tatsumasa WATANABE, Takaaki FUSE, Shingo HORIMI
Japanese Journal of JSCE 81 ( 13 ) 1 - 15 2025.7 [Reviewed]
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Earthquake Engineering Committee of JSCE Joint Work
<p> In this paper, the applicability of numerical simulation is verified by analyzing the behavior of a centrifuge model of a circular shaft in a dense sandy soil with the upper layer dry and the lower layer saturated. In addition, the numerical model was used to analyze the effect of the width of the sand layer on the seismic response of the circular shaft, taking into account the various conditions of the actual circular shaft (shaft stiffness, relative density of the sand layer, drainage conditions).</p><p> The results showed that it is possible to evaluate the response of the ground and circular shafts by appropriately setting the physical properties of the sand ground and circular shafts. In addition, it was also found that if the width of the sand ground is secured to be at least as wide as the diameter of the circular shaft, it is possible to appropriately evaluate the response of the circular shaft when the stiffness of the circular shaft is large, such as before the concrete cracks. However, when the circular shaft has low stiffness, as in the case of concrete cracking, the response of the circular shaft was overestimated in the model with a narrow sand layer depth.</p>
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Study of Collapse Risk Assessment Method for Full-Scale Six-Story Reinforced Concrete Building Using Material Nonlinear FEM
Mari FUNAYAMA, Satoshi KOMATSU, Akira HOSODA, Kuniyoshi SUGIMOTO
Proceedings of the Japan Concrete Institute 47 ( 2 ) 889 - 894 2025.7 [Reviewed]
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Study on Collapse Evaluation Method for RC Buildings Considering Redundant Failure Behaviour
Satoshi Komatsu, Mari Funayama, Zazirej Stanislav, Akira Hosoda and Ku-niyoshi Sugimoto
fib Conceptual Design Symposium 2025.5 [Reviewed]
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Proposal of RC building model for seismic response analysis over a wide area
Yuta Shigesato, Satoshi Komatsu, Kahori Iiyama, Kunitoshi Sugimoto, Akira Hosoda
Proceedings of Applied Mechanics Symposium 2025.5
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Three-dimensional non-linear behavior analysis of far-field load experiments on RC circular tunnels in dense sandy soil
CS10 ( 135 ) 2024.9
Authorship：Lead author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Numerical Analysis of Fatigue Failure Behavior of Concrete Floating Structures in Water
V ( 535 ) 2024.9
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Behavior Analysis of Centrifuge Loading Tests on a Circular Shaft Model Buried in Dense Sandy Ground with Unsaturated Layer
Satoshi Komatsu, Toyofumi Matsuo, Tatsumasa Watanabe, Takaaki Fuse, Shingo Horimi
The 44th Annual Conference on Earthquake Engineering 305 1 - 6 2024.9
Authorship：Lead author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Study on bridge modeling for earthquake response simulation using urban digital twins
27th Proceedings of Applied Mechanics Symposium 2024.5
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Collapse risk assessment of RC and SRC buildings based on seismic response analysis
27th Proceedings of Applied Mechanics Symposium 2024.5
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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Current Status on Enhancing Seismic Performance Verification for Underground RC Structures at NPPs in Japan
Tofyofumi Matsuo, Keizo Otomo, Seiji Nagata, Satoshi Komatsu, Koichi Maekawa
Smirt27 2024.3 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Satoshi Komatsu, Yoshinori Miyagawa, Toyofumi Matsuo
Smirt27 2024.3 [Reviewed]
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Single Work
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Satoshi Komatsu, Toyofumi Matsuo, Tomohisa Miura, Tetsuya Ishikawa
Japanese Journal of JSCE 79 ( 10 ) 1 - 14 2023.10 [Reviewed]
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work
<p> In order to clarify the fatigue characteristics of the concrete floating of the offshore wind platform, fatigue loading tests were conducted on the small-scale partial specimens under constant compressive stress condition assuming for the service environment. As a result, the fatigue life was about 10<sup>2</sup> times shorter in water than in air, as in the past researches. In addition, when the stress-intensity ratio of the maximum amplitude was large, the fatigue life tended to be shorter at the joint than at the center. It was found that when the maximum amplitude was 70%, the fatigue life at the joint was one order shorter than that at the center. It is considered that the contact state of the joint surface has a great influence. It was confirmed that the fatigue life of PRC members (<i>f<sub>ck</sub>’</i>= 60 N/mm<sup>2</sup>) can be roughly evaluated by applying the fatigue strength formula in the JSCE specifications.</p>
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洋上風力発電設備コンクリート製浮体接合部の圧縮破壊挙動に関する検討
小松怜史、山野井悠翔、松尾豊史、山田理紗
第30回海洋工学シンポジウム OES30 ( A0042 ) 2023.9 [Reviewed]
Authorship：Lead author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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密な砂地盤中に構築された円形立坑の遠心載荷実験の3次元再現解析
小松 怜史、松尾 豊史、渡部 龍正、布施 貴朗
第78回年次学術講演会集 CS10-23 2023.9
Authorship：Lead author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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Komatsu Satoshi, Miyagawa Yoshinori, Matsuo Toyofumi, Hata Akihito, Shimabata Tsuguhiro, Nakamura H … Show more authors
Komatsu Satoshi, Miyagawa Yoshinori, Matsuo Toyofumi, Hata Akihito, Shimabata Tsuguhiro, Nakamura Hikaru Hide authors
Journal of Advanced Concrete Technology 21 ( 5 ) 421 - 435 2023.5
DOI Web of Science CiNii Research
Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本コンクリート工学会 Joint Work
<p>In this paper, the applicability of two deformation indices related to displacement of concrete members proposed by the authors has been verified for full-scale RC members with shear or bending failure under bilateral loads. These two indices, namely "thickness increment of RC member" assuming out-of-plane shear failure, and a newly proposed index, "relative displacement on compressive edge in RC member", which assumes in-plane shear failure and out-of-plane bending failure, are mainly discussed in this paper.</p><p>As a result, it was revealed that the deformation indices could estimate the failure mode of RC columns with shear failure or bending failure under horizontal bilateral loads. In addition, it was confirmed that one of the indices reached the limit value at about 90% or more of the maximum load, and that the element size dependence was small. It was also found that this index can reasonably evaluate the load carrying capacity as much as or better than the existing strain indices.</p>
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Tsuguhiro Shimabata, Hikaru Nakamura, Keisuke Kawamura, Satoshi Komatsu
Journal of Structural Engineering, A 69A ( 0 ) 848 - 860 2023.3 [Reviewed]
Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Single Work
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Application of Precast Concrete to Floating Support for Offshore Wind Platform
Komatsu S., Matsuo T., Yamada R., Ishikawa T.
Concrete Journal 61 ( 1 ) 113 - 118 2023
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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King of Concrete Competition 2022
Takahashi Y., Migita S., Sawaguchi K., Komatsu S., Shibayama A.
Concrete Journal 61 ( 6 ) 554 - 559 2023
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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STUDIES ON APPLICABILITY OF FAILURE CRITERIA BY LOADING EXPERIMENTS OF FULL-SCALE RC MEMBERS
41 2022.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Single Work
Other Link： https://www.jstage.jst.go.jp/article/jscejseee/78/4/78_I_138/_article/-char/ja/
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段差を有する道路橋ジョイント付近の防水層に生じる応力状態の分析
山岸 拓人、小松 怜史、樋口 勇輝、薄井 王尚
道路橋床版シンポジウム論文報告集 12 ( 1 ) 2022.10 [Reviewed]
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Investigation based on behavior analysis of centrifugal loading test of RC vertical shaft model buried in dense ground
Tatsumasa Watanabe, Tsuguhiro Shimabata, Satoshi Komatsu, Kazuhide Yamaguchi, Hiroyuki Kumada
CS10 ( 76 ) 2022.9
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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Experimental Study on Fatigue Fracture Behavior of Concrete Floating with joints for Offshore Floating Power Facility
Tomohisa Miura, Kazumasa Nishigori, Tesuya Ishikawa, Satoshi Komatsu, Yuto Yamanoi, Toyofumi Matsuo
V ( 310 ) 2022.9
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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Satoshi Komatsu, Yoshinori Miyagawa, Toyofumi Matsuo
26th International Conference on Structural Mechanics in Reactor Technology 2022.7 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Seismic fragility evaluation of underground RC box culverts using partial relative displacement indices in solid model
Yoshinori Miyagawa, Satoshi Komatsu
44 ( 2 ) 151 - 156 2022.7 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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Analysis of Compression Fatigue Behavior Using Partially Modeled Specimen of PRC Spar Floating for Offshore Wind Electric Facility with 10 MW Class Wind Turbine
Satoshi Komatsu, Yuto Yamanoi, Risa Yamada, Tetsuya Ishikawa
44 ( 2 ) 919 - 924 2022.7 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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A Study on Application of Strain Indices for Seismic Performance Verification to Real-Scale RC Member by 3D Material Nonlinear FEA
Satoshi Komatsu, Yoshinori Miyagawa, Toyofumi Matsuo
Proceedings for the 2021 fib symposium 2021.6 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Komatsu Satoshi, Nagata Seiji, Matsuo Toyofumi, Hata Akihito, Maekawa Koichi
Journal of Structural Engineering, A 67A 591 - 604 2021.3 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineers Joint Work
Other Link： https://www.jstage.jst.go.jp/article/structcivil/67A/0/67A_591/_article/-char/ja/
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Yoshihiro SHISHIKURA, Yujin YAMAMOTO, Kazuaki WATANABE, Satoshi KOMATSU, Katsuya YOKOTA
Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering) 77 ( 4 ) I_174 - I_183 2021.2 [Reviewed]
Language：English Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineering Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jscejseee/77/4/77_I_174/_article/-char/ja/
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コンクリートの明日を支える技術者の育成/3.若手技術者が望む人材育成の在り方 若手技術者が主体となったグローバル人材育成の取組み
大野元寛 , 小松怜史
コンクリート工学 59 ( 1 ) 115 - 118 2021.1
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：公益社団法人 土木学会 Single Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202102257254048035
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A Study on Applicability of Deformation Index and its Limit Value to RC Members Based on Compressive Failure Behavior of Concrete
Satoshi Komatsu, Toyofumi Matsuo
Proceedings of JSCE annual convention CS11 ( 29 ) 2021
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineering Joint Work
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ANALYTICAL EXAMINATION OF HORIZONTAL BIDIRECTIONAL LOADING PATH DEPENDENCE ON SHEAR FAILURE BEHAVIOR OF FULL-SCALE RC MEMBERS
Yoshihiro Shishikura, Kazuaki Wtanabe, Satoshi Komatsu, Katsumi Yokota
Proceedings of JSCE annual convention CS11 ( 29 ) 2021
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
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Yoshihiro SHISHIKURA, Kazuaki WATANABE, Satoshi KOMATSU, Katsuya YOKOTA
Proceedings of JSCE annual convention 75th 595 2020.8
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineering Joint Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202102237968068729
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Satoshi Komatsu, Toyofumi Matsuo, Akihito Hata, Katsumi Yokota
Proceedings of JSCE annual convention 75th ( 20 ) 2020.8
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineering Joint Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202102252926924098
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Zerin Arifa Iffat, Hosoda Akira, Komatsu Satoshi, Ishii Hironori
JOURNAL OF ADVANCED CONCRETE TECHNOLOGY 18 ( 7 ) 420 - 436 2020.7 [Reviewed]
DOI Web of Science CiNii Research
Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本コンクリート工学会 Joint Work
The present research aimed at evaluating early age thermal cracking risk of durable RC slabs incorporating slag cement and expansive additive on multiple span steel box girder bridges utilizing full-scale 3D FEM simulation. First, laboratory investigations were conducted to calibrate the material models of durable concrete. Second, the material models were utilized in several member level FEM models and the simulation procedure was verified regarding early age volume changes calibrating parameters for expansion energy and reduction factors for creep. Third, thermal and volumetric changes in RC slab were monitored and the simulation procedure was further validated in structural level utilizing full-scale FEM model of the real bridge. The simulated maximum tensile stress along bridge axis in RC slab signify the risk of early age transverse cracking where the accumulated stepping construction stress is comparatively large. The effectiveness of expansive additive in reducing the risk of transverse cracking is revealed from the simulation. However, parametric studies of the validated model indicate that the RC slab on the permanent form of seven span steel box girder bridge is vulnerable to early age thermal cracking regardless of ambient conditions and placing temperatures when coefficient of thermal expansion of concrete is larger than 6×10-6/℃.
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Nguyen Huu Quoc Hung, Komatsu Satoshi, Maekawa Koichi
ENGINEERING STRUCTURES 209 2020.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Study on Vertical Support Performance of Reinforced Concrete Members and Frames with Shear under Bilateral Loads
75th ( 595 ) 2020
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineering Joint Work
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Shoma Nohara, Satoshi Komatsu, Kazuhiko Furukawa, Syunsuke Kimura, Keiichi Miwa
Proceedings of the concrete structure scenarios 19 385 - 390 2019.10 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Single Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202002270865413014
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Effects of Water-Coupled Cracks on Life-Cycle Assessment of Concrete Pavement under Moving Load
Nguyen H. Q. H., Maekawa K., Komatsu S.
AIRFIELD AND HIGHWAY PAVEMENTS 2019: DESIGN, CONSTRUCTION, CONDITION EVALUATION, AND MANAGEMENT OF PAVEMENTS 111 - 121 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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UTILIZING EXPANSIVE ADDITIVE TO REDUCE THERMAL CRACKING RISK OF RC SLAB ON SINGLE SPAN PC COMPOSITE GIRDER BRIDGE
Satoshi Komatsu
コンクリート工学年次論文集 41 ( 1 ) 707 - 712 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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EFFECTS OF INNER MOISTURE OF COVERCRETE ON SURFACE WATER ABSORPTION TEST AND AIR PERMEABILITY TEST
Satoshi Komatsu
コンクリート工学年次論文集 41 ( 1 ) 1919 - 1924 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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NUMERICAL SIMULATION OF CONSTRUCTION-JOINT EFFECTS FOR FATIGUE-LIFE ASSESSMENT OF CONCRETE PAVEMENT SUBJECTED
Satoshi Komatsu
コンクリート工学年次論文集 41 ( 1 ) 1397 - 1402 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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Teppei Otomo, Ryosuke Shionaga, Yoshihiko Nakamura, Satoshi Komatsu
Proceedings of JCI annual convention 41 ( 1 ) 1259 - 1264 2019.6 [Reviewed]
Language：Japanese Publishing type：Research paper (other science council materials etc.) Joint Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201902240863251648
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Komatsu Satoshi, Shimakura Munetoshi, Higuchi Yuki, Tanaka Shinsuke
Journal of Structural Engineering, A 65A ( 0 ) 552 - 559 2019.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work
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Komatsu S., Kondo Y., Ikawa N., Hashimoto C.
Concrete Journal 57 ( 6 ) 433 - 440 2019
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
<p>Based on the assumption that workers can be made to learn correct test methods by having them understand the importance of adhering to the work items specified in the Japanese Industrial Standards (JIS) and properly understand ing the mechanism of measuring equipment, workers were made to conduct the slump test, air content test, and compressive strength test under conditions deviating from those specified by JIS. Two types of concrete were used, with respective slump of 21 cm and 12 cm. The findings included the facts that the timing of lifting of the slump cone can decrease the measured slump value of fresh concrete by up to 3.0 cm, that the finishing method of the samples placed in the air content tester can cause the measured air content value to vary by up to 1.5％, and that tumbling of specimens prior to concrete hardening can cause reduction in compressive strength by approximately 7％ by the material age of 28 days.</p>
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Numerical Simulation for Rational Renewal Method of Concrete Bridge Decks
T. Sogawa, Koichi Maekawa, S. Komatsu
The 8th International Conference of Asian Concrete Federation 1233 - 1242 2018.11 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Asian Concrete Federation Joint Work
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Three-dimensional High-cycle Fatigue Simulation of Soil-concrete Pavement Slab Interaction under Moving Loads
H.Q.H. Nguyen, Koichi Maekawa, S. Komatsu
The 8th International Conference of Asian Concrete Federation 1207 - 1216 2018.11 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Asian Concrete Federation Joint Work
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A Study on Water tightness Evaluation of Concrete Slab Joints Using Variable Pressure Permeability Tester
Jyunpei Banzai, Satoshi Komatsu, Akira Nonaka
10 ( 1 ) 135 - 140 2018.11 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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加熱アスファルト敷設時の熱がコンクリート床版上面と防水層の力学的一体性に及ぼす影響
島倉稔宗、小松怜史、樋口勇輝、田中伸介
道路橋床版シンポジウム論文報告集 10 ( 1 ) 275 - 280 2018.11 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：土木学会鋼構造委員会 Joint Work
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Kazuhiko Hayashi, Harumi Obada, Satoshi Komatsu, Akira Hosoda
6 187 - 194 2018.8 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201902243223672231
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Investigative research on road bridge maintenance using maintenance records
Yukiko Wakabayashi, Hitoshi Yamada, Hiroshi Katsuchi, Akira Ariyoshi, Satoshi Komatsu
Proceedings of JSCE annual convention Ⅵ ( 213 ) 425 - 426 2018.8
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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PROPOSAL OF QUALITY EVALUATION METHOD FOR UPPER SURFACE OF CONCRETE SLAB WITH SURFACE WATER ABSORPTION TEST
Satoshi KOMATSU, Ryo TAJIMA, Akira HOSODA
4th International Conference on Service Life Design for Infrastructures (SLD4) 261 - 272 2018.8
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Delft University, Microlab Joint Work
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Numerical Simulation of Early Age Thermal Stress in Durable RC Bridge Slab Utilizing Blast Furnace Slag Concrete with Expansive Additive
Arifa Iffat Zerin, Akira Hosoda, Satoshi Komatsu, Kosuke Kashimura
12th fib International PhD Symposium in Civil Engineering 2018.8
Language：English Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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EFFECT OF MOISTURE CONTENT ON SURFACE WATER ABSORPTION TEST AND AIR PERMEABILITY TEST
Proceeding of the Japan Concrete Institute 40 ( 1 ) 1725 - 1730 2018.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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A study on effect of surface quality of concrete in concrete slab on integration with waterproofing layer
Takayuki Sogawa, Satoshi Komatsu, Shinsuke Tanaka
Proceedings of JCI annual convention 40 ( 1 ) 405 - 410 2018.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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NUMERICAL SIMULATION OF THERMAL STRESS IN HIGHLY DURABLE RC SLAB ON PC COMPOSITE GIRDER BRIDGE
Arifa I. Zerin, Akira Hosoda, Satoshi Komatsu, Nobuyuki Nagata
Proceeding of the Japan Concrete Institute 40 ( 1 ) 465 - 470 2018.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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Satoshi KOMATSU, Yoto TANAKA, Tatsuya TSUBAKI, Hikaru TANIGAWA, Takatada TAKAHASHI
Journal of Japan Society of Civil Engineers, Ser. E2 74 ( 2 ) 105 - 118 2018.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work
To optimize concrete tracks in terms of reasonable loading structure, superior workability, easy maintenance and economic efficiency, a new solid-bed track with resilient sleepers has been developed by the authors. In this research, to clarify the shrinkage behavior of this track, full-scale track members were prepared. To investigate the shrinkage behavior of the track, numerical simulation was performed using a three-dimensional multi-scale coupled model where the microscopic characteristics of cementitious composites and nonlinear structural mechanics are integrated.<br> The results of this study indicate that shrinkage cracks can be generated from just under the corner of sleepers in an inverted V shape when the thickness of the track is relatively thin, on the order of 80 mm. However, generation of shrinkage cracks can be restricted when the thickness of the track is greater than about 280 mm, as is typical in snowy cold regions. The results indicated also that the generation of shrinkage cracks is unlikely when the thickness of the track is about 580 mm. This may be due to the fact that the age at which the main stress peaks is delayed as development of shrinkage behavior slows down when the thickness of the track is large, and therefore the tensile strength of the concrete increases with age. Another reason might be that the restraining effect of the concrete bed of the track is small when the thickness of the track is large.<br> In addition, to control the propagation of shrinkage cracks, the position and size of crack induced joints were investigated. Based on the numerical simulation results, it was found that shrinkage cracks can be vertically generated when the sectional defect range is set to about 10%.
Other Link： https://www.jstage.jst.go.jp/article/jscejmcs/74/2/74_105/_article/-char/ja/
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Satoshi KOMATSU, Ryo TAJIMA, Akira HOSODA
Concrete Research and Technology 29 ( 0 ) 34 - 40 2018.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
<p>This paper presents the results of the investigation of a new method for evaluating the quality of the upper surface of concrete slabs with a surface water absorption test (SWAT) developed by the authors. Methods to measure the moisture content of concrete at the depth of 5mm from the surface were investigated considering parameters such as W/C, type of cement and curing conditions. It was found that the moisture content of concrete at the depth of 5 mm from the casting surface can be detected by the HI-100 moisture tester (manufactured by Kett) and the concrete can be judged to be sufficiently dry when the count value of the device is below 120. When the count value was below 120, the quality of the concrete at the upper surface of the slab could be evaluated by using the cumulative water absorption amount over a duration of 100 seconds. In conclusion, the count value of 120 can be used as an index for detecting the decrease in scaling resistance of concrete due to micro-cracking at the surface.</p>
Other Link： https://www.jstage.jst.go.jp/article/crt/29/0/29_33/_article/-char/ja/
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Numerical simulation of early age expansion and autogenous shrinkage behavior of blast furnace slag concrete with expansive additive
Zerin Arifa Iffat, Hosoda Akira, Komatsu Satoshi
構造工学論文集 Ａ 64A ( 0 ) 666 - 674 2018 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：公益社団法人 土木学会 Joint Work
A multiple protection durable concrete mix design with blast furnace slag cement and expansive additive was applied in Shinkesen Ohashi deck girder bridge RC slab construction which is highly susceptible to deterioration due to aggressive environment in Tohoku region. The present study aims at evaluating the cracking risk of Shinkesen Ohashi RC slab concrete. In this context, laboratory investigations were conducted to measure the free autogenous shrinkage and restrained expansion along with setting time and time dependent compressive strength development for the same concrete mix. Simultaneously, FEM numerical simulations were conducted to analyze volume changes of restrained concrete members utilizing experimentally obtained material properties, and verified by experimental results.
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Zerin, A. and Hosoda, A. and Komatsu, S. and Kashimura, K.
Proceedings of the 12th fib International PhD Symposium in Civil Engineering 1207 - 1215 2018
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Joint Work
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新気仙大橋の高耐久RC床版についての検討 その４（表層品質の評価）
小松怜史、田島涼、細田暁
第72回年次学術講演会講演概要集 72 ( Ⅰ－50 ) 299 - 300 2017.9
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人 土木学会 Joint Work
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Study on Time-Dependent Behavior of RC Beams with Flexural Cracks Generated at Early Age
Satoshi Komatsu, Akira Hosoda
Journal of Advanced Concrete Technology 15 ( 8 ) 368 - 380 2017.8
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jact/15/8/15_368/_article
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Effect of time lag to completion of water injection on quality evaluation of surface water absorption test
Ryo Tajima, Satoshi Komatsu, Akira Hosoda
Proceedings of JSCE annual convention V ( 479 ) 957 - 958 2016.8
Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：Japan Society of civil engineers Joint Work
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Investigation of Noise Processing Algorithm for Measurement Data in Surface Water Absorption Test
Satoshi Komatsu, Ryo Tajima, Kazuhiko Hayashi, Akira Hosoda
Proceedings of JCI annual convention 38 ( 1 ) 2043 - 2048 2016.6 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Concrete Institute Joint Work
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Investigation of time-dependent development of flexural cracks of long span RC box girder considering shrinkage property of concrete
Satoshi Komatsu, Akira Hosoda
Journal of Structural Engineering 11 ( 3 ) 827 - 836 2016.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of civil engineers Joint Work
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Evaluation of durability of concrete structures with surface water absorption test
Satoshi Komatsu, Ryo Tajima, Kazuhiko Hayashi and Akira Hosoda
The 2nd national conference on transport infrastructure with sustainable development 649 - 655 2016 [Invited]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Fracture Behavior Analysis of Railroad Track Directly Connected to Elastic Sleepers Resisting Lateral Force with Projections on Sides of Sleepers under Horizontal Loading
Hikaru Tanigawa, Takatada Takahashi, Yoshitsugu Momoya, Tatsuya Tsubaki, Satoshi Komatsu, Akane Asa … Show more authors
Hikaru Tanigawa, Takatada Takahashi, Yoshitsugu Momoya, Tatsuya Tsubaki, Satoshi Komatsu, Akane Asano Hide authors
Proceedings of JSCE annual convention 71st ( 095 ) 189 - 190 2016
Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：Japan Society of civil engineers Joint Work
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Investigation of Quality Evaluation Method for Concrete Slab in Top Surface using Surface Water Absorption Test
Satoshi Komatsu, Akira Hosoda
Proceedings of JSCE annual convention 71st ( 478 ) 955 - 956 2016
Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：Japan Society of civil engineers Joint Work
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Investigation of time-dependent development of flexural cracks of a long span RC box girder considering shrinkage property of concrete
Satoshi Komatsu, Akira Hosoda
International Symposium on Concrete and Structures for Next Generation 329 - 336 2016
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Analysis of hoop stress generated at crown of lining concrete in NATM tunnels
Chamila K. RANKOTH, Akira HOSODA, Satoshi KOMATSU
コンクリート工学年次論文集 38 ( 1 ) 1503 - 1508 2016
Language：English Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本コンクリート工学会 Joint Work
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Satoshi KOMATSU,Akira HOSODA
JSCE journal 71 58 - 71 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan society of civil engineers Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jscejmcs/71/1/71_58/_article/-char/ja/
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Efforts to improve surface quality of concrete structures and verification of effects by non-destructive test
Akira Hosoda, Satoshi Komatsu, Rie Nakagawa, Kazunori Sato
Proceedings of JCI annual convention 37 ( 1 ) 1273 - 1278 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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Evaluation of surface quality and improvement of smoothness of concrete slab with a developed basic finisher
Satoshi Komatsu, Ryo Tajima, Yasushi Tanaka, Toru Saito, Akio Arai
Concrete Engineering series 109 431 - 436 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Society of Civil Engineering Joint Work
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EVALUATION OF COVERCRETE QUALITY OF TUNNEL LINING CONCRETE WITH SURFACE WATER ABSORPTION TEST
Satoshi KOMATSU, Akira HOSODA
Fifth International Conference on Construction Materials Performance, Innovations, and Structural Implications 2015 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Satoshi KOMATSU, Akira HOSODA
AMS' proceedings of the international conference on aging of materials & structures 524 - 531 2014 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Numerical simulation of shrinkage behavior of concrete with different reinforcing bar ratios and volumetric surface area ratios
Satoshi KOMATSU, Yumiko TOKI, Akira HOSODA
Proceedings of JCI annual convention 35 ( 1 ) 565 - 570 2013 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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Satoshi Komatsu, Minoru Ohno, Akira Hosoda, Kazuhiko Hayashi, Kauzhiro Tsuno
Proceedings of JCI annual convention JCI-C78 45 - 51 2011.8
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Concrete Institute Joint Work
Other Link： https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201102276455201867
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Effects of Autogenous Shrinkage Properties of Blast Furnace Cement on Thermal Cracking Properties of Actual Structures
Satoshi KOMATSU, Minoru Ohno, Akira HOSODA, Kazuhiko HAYASHI, Kazuhiro TSUNO
Symposium on shrinkage property evaluation based on durability mechanics 45 - 51 2011 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Concrete Institute Joint Work
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Example of calculation of flexural crack width of RC box girder considering shrinkage property of concrete
Satoshi KOMATSU, Akira HOSODA
9th International Symposium on Utilization of High-Peformance Concrete 2011 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Calculation example of bending cracks by bending crack width calculation formula considering shrinkage characteristics
Satoshi KOMATSU, Akira HOSODA
Symposium on "Evaluation of Shrinkage Properties of Concrete and Effects on Cracking" 39 - 46 2010.12
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Joint Work
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FUNDAMENTAL STUDY ON SELF HEALING OF CEMENT PASTE BY CALCIUM ALMINATE BASED AGENTS
Satoshi KOMATSU,Kritsada SISOMPHON,Ogzuhan COPUROGLU
32 ( 1 ) 131 - 136 2010 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Calculation example of bending crack width in RC box girder considering shrinkage characteristics of concrete
Satoshi KOMATSU, Akira HOSODA
Symposium on "Evaluation of Shrinkage Properties of Concrete and Effects on Cracking" JCI-C77 39 - 46 2010 [Reviewed]
Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：Japan Concrete Institute Joint Work
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SLEF HEALING OF CEMENT PASTE BY CALCIUM ALUMINATE BASED AGENTS
Ogzuhan COPUROGLU, Kritsada SISOMPHON, Satoshi KOMATSU
2nd Self Healing Materials 2009
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Healing Properties of Self Healing Concrete with Water Passing through Crack
Satoshi KOMATSU, Akira HOSODA, Tae Ho AHN, Seiji IKENO
30 ( 1 ) 117 - 122 2008 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Concrete Institute Joint Work
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Healing Properties of Self Healing Concrete with Water Passing Through Crack
Akira HOSODA, Satoshi KOMATSU, Toshiharu KISHI, Tae Ho AHN, Seiji IKENO
8th International Symposium on Utilization of High-Peformance Concrete 218 - 224 2008
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Self Healing Properties with Various Crack Widths under Continuous Water Leakage
Akira HOSODA, Satoshi KOMATSU, Tae Ho AHN, Toshiharu KISHI, Kaoru KOBAYASHI
International Conference on Concrete Rrepair, Rehabilitation & Retrofitting 221 - 227 2008
Language：English Publishing type：Research paper (international conference proceedings) Joint Work