Seismic Structural Analysis Method for Large-scale Structure

点击翻译按钮获取中文摘要

Seismic structural response is affected by temporal and spatial variation of strong ground motion, which is caused by fault-structure system: fault mechanism, wave propagation through the crust, the amplification near the ground surface and the soil-structure interaction. In order to estimate such seismic structural response with high resolution and high accuracy, we propose a new analysis method based on multi-scale analyses and numerically verify its validity using small problem. Since the computation cost of construction of 3-D numerical model for large-scale problem including structure and solving the disritizaed governing equation is extremely huge, we cannot conduct numerical simulation based on fault-structure system with actual setting. Thus, we also develop a new method to resolve these difficlties. The accuracy of our method is verified by the comparison with Green's function solution, and seismic response of large-scale complex structure in given earthquake scenario is estimated based on fault-structure system to present its potential usefulness.