| Summary: | 碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 91 === The fix-base model adopted in traditional seismic design, the response spectrum is expressed by the surface of acceleration form, when structure proceeding dynamic response analysis. According to investigate by in the past scholar reveal, pure fix-base model to proceed analysis, the structure not entire suit the dynamics response of seismic, by considered soil-structure interaction response spectrum analysis method, intact explained the structure dynamic response.
Therefore, this research key discuss which a simplified model to consider soil-structure interaction influence. And when consider soil-structure interaction discuss response spectrum analysis to rectify. So as to calculate structure maximum displacement and elasticity force and base shear. And to probe into different modal combination rule to influence for soil-structure interaction response spectrum analysis, the seismic design suitable was assured.
By analysis result show, base side-away and rocking motion match impedance of the foundation soils for calculate, really can simple and easy evaluation structure seismic dynamic response. When foundation soils weak, consider soil-structure interaction promote accurate degree indeed. By structure''s characteristics choose best modal combination rule, can to expect achievement enough accurate degree, for modal combination rule suitably. Therefore, combine fix-base model with a simplified model that to consider soil-structure interaction proceeded with response spectrum method, indeed can effective exercise in engineering, it is regarded as seismic design of reference.
|
|---|
