Development of coupled ground-city seismic response analysis method
| Project/Area Number |
17K14719
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Fujita Kohei 東京大学, 地震研究所, 助教 (00744856)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 有限要素法 / 地震応答解析 / 高性能計算 / 地盤-都市系連成地震応答解析 / メッシュ生成 / 地盤-都市系 / 連成地震応答解析 |
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| Outline of Final Research Achievements |
In this study, a method to automatically generate high-resolution 3D finite-element models of ground and underground as well as over-ground structures from digital urban data, and a high-performance finite-element method suitable for recent computer architecture was developed to conduct a coupled seismic response analysis of ground-city systems. By conducting high-resolution seismic response analysis of coupled underground and over-ground structure models, a complex response including change in response at ground surface due to the existence of underground structures, was obtained.
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| Academic Significance and Societal Importance of the Research Achievements |
高層ビル・インフラ・地下街などが複雑に入り組む都市中枢部においては，地震時に複雑な波動場が生じ，構造物を個々に評価した際には見られない地震応答が発生する可能性がある．このような特性の評価には，地盤-都市系の詳細な3次元連成解析を使うことが合理的である．本研究により，複雑に入り組んだ都市の耐震特性を定量的に分析できるようになり，都市系の耐震設計の安全性・合理性の向上につながると期待される．
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Report
(4 results)
Research Products
(37 results)
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[Journal Article] 416-PFLOPS Fast Scalable Implicit Solver on Low-Ordered Unstructured Finite Elements Accelerated by 1.10-ExaFLOPS Kernel with Reformulated AI-Like Algorithm: For Equation-Based Earthquake Modeling2019
Author(s)
Tsuyoshi Ichimura, Kohei Fujita, Takuma Yamaguchi, Akira Naruse, Jack C. Wells, Christopher J. Zimmer, Tjerk P. Straatsma, Takane Hori, Simone Puel, Thorsten W. Becker, Muneo Hori, Naonori Ueda
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Journal Title
Research Poster for SC19: The International Conference for High Performance Computing, Networking, Storage, and Analysis
Volume: -
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A Fast Scalable Implicit Solver for Nonlinear Time-Evolution Earthquake City Problem on Low-Ordered Unstructured Finite Elements with Artificial Intelligence and Transprecision Computing2018
Author(s)
Tsuyoshi Ichimura, Kohei Fujita, Takuma Yamaguchi, Akira Naruse, Jack C. Wells, Thomas C. Schulthess, Tjerk P. Straatsma, Christopher J. Zimmer, Maxime Martinasso, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
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Journal Title
SC '18 Proceedings of the International Conference for High Performance Computing, Networking, Storage, and Analysis
Volume: -
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] A Fast Scalable Implicit Solver with Concentrated Computation for Nonlinear Time-evolution Problems on Low-order Unstructured Finite Elements2018
Author(s)
11.Tsuyoshi Ichimura, Kohei Fujita, Masashi Horikoshi, Larry Meadows, Kengo Nakajima, Takuma Yamaguchi, Kentaro Koyama, Hikaru Inoue, Akira Naruse, Keisuke Katsushima, Muneo Hori, Maddegedara Lalith
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Journal Title
Proceedings of 32nd IEEE International Parallel and Distributed Processing Symposium
Volume: -
Pages: 620-629
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Using Artificial Intelligence and Transprecision Computing for Accelerating Finite-Element Urban Earthquake Simulation2019
Author(s)
Tsuyoshi Ichimura, Kohei Fujita, Takuma Yamaguchi, Akira Naruse, Jack C. Wells, Thomas C. Schulthess, Tjerk P. Straatsma, Christopher J. Zimmer, Maxime Martinasso, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
Organizer
The 1st R-CCS International Symposium
Related Report
Int'l Joint Research
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