Theoretical interpretation of evaluation method for seismic ground strain using the spatial gradient of peak ground velocity
| Project/Area Number |
15K14022
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | Kobe University |
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Principal Investigator |
Kuwata Yasuko 神戸大学, 工学研究科, 准教授 (50379335)
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| Co-Investigator(Kenkyū-buntansha) |
澤田 純男 京都大学, 防災研究所, 教授 (70187293)
後藤 浩之 京都大学, 防災研究所, 准教授 (70452323)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | 地盤ひずみ / 最大速度 / 不整形地盤 / 応答解析 |
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| Outline of Final Research Achievements |
Buried pipelined is affected by the deformation of surrounding ground at an earthquake. When considering the seismic performance of buried pipeline, it is important to evaluate ground strain appropriately. In a case study of the past earthquake in Japan, Sakai et al. demonstrated that a new index called PGV gradient could explain well the damage to a water-supply pipeline. PGV gradient is defined as the spatial gradient of PGV at approximately 250 m intervals. This study aims to clarify the relationship of spatial distribution between PGV gradient and ground strain using theoretical and numerical approaches. This study analyzed the ground responses of several sediment-filled valleys due to the input waves with different frequency characteristics using FEM analysis as a numerical approach.
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Report
(3 results)
Research Products
(4 results)
