Earthquake Motion Amplification of Surface Soil Layers at the Strong Motion Stations in Ojiya during the 2004 Mid Niigata Earthquake
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概要
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During the 2004 Mid Niigata Earthquake, there was large difference between the earthquake motion amplitudes at the K-NET station and the JMA station in Ojiya, Niigata prefecture. The damage to low-rise buildings around the sites was relatively little for such large strong motions. To find the cause of the amplitude difference and the damage level, we conduct earthquake response analyses of surface soil layers considering soil nonlinearity and then earthquake response analyses of building models. These analyses show that the difference of strong motions at the two sites mainly depends on the surface soil amplification within approximately 3 meters below the surface. And by earthquake response analyses of building models, we confirm that the analytical results account for the little damage to low-rise buildings in the earthquake.
- 一般社団法人 日本地震工学会の論文
一般社団法人 日本地震工学会 | 論文
- Scope of this issue
- Study on the Priority of Measuring against Scenario Earthquakes Based on Seismic Risk Estimation
- Investigation on Actual Disaster Responses in Local Governments in terms of Information Sharing
- Empirical Correction of Ground Motion Prediction Equations of Response Spectra at Rock Sites for Near-Field Earthquakes Considering Amplification Effect within Deep Subsurface Structure
- A Study for Estimating Suspension Time of Railway Lines Due to Earthquake