Verification of Velocity structures estimation in a irregular subsurface structure using the microtremor H/V spectral method
| Project/Area Number |
23560670
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ARAI Hirotoshi 国土技術政策総合研究所, 建築研究部, 主任研究官 (40302947)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 強震動予測 / 地下構造推定 / ３次元モデル / 微動 / 水平・上下動スペクトル比 / 差分法 / 大阪堆積盆地 / 地震防災 / 地下構造 / 水平上下スペクトル比 / 不整形地盤 / 逆解析 / シミュレーション |
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| Outline of Final Research Achievements |
Beyond the traditional framework of the 1-D velocity structure, the horizontal-to-vertical spectral ratio (HVSR) of microseisms, derived from full-wave field in a three-dimensional topographical model (the Osaka sedimentary basin) was produced by finite differential method (FDM)-based simulation.
The FDM simulations confirmed the phenomena such as the polarization of the peak amplitude of the HVSRs in grabens and step structures in the sediment-bedrock interface. In addition, it was showed that the features of the peak frequency, the peak value and the shape of HVSRs in areas with strong irregularities in the sediment-bedrock interface are different from those of the HVSR estimation based on the 1-D velocity structure model.
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Report
(5 results)
Research Products
(25 results)
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[Presentation] Benchmark Tests for Strong Ground Motion Prediction Methods Using Numerical Methods2012
Author(s)
Chiaki YOSHIMURA, Masayuki NAGANO, Yoshiaki HISADA,Shin AOI, Asako IWAKI, Takashi HAYAKAWA, Seckin Ozgur CITAK, Shinichi MATSUSHIMA, Hidenori KAWABE, Hirotoshi UEBAYASHI, Yoshihiro ONISHI
Organizer
15th. World Conference of Earthquake Engineering
Place of Presentation
Lisbon Congress Centre, Portugal
Related Report
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