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针对土与建筑群的动力相互作用问题,该文建立了土与结构动力相互作用研究的被研究块体模型,给出一种处理建筑群与地基动力相互作用研究的波动数值方法。该方法便于研究城市中建筑群的地震响应。数值模拟结果表明:城市中建筑群的存在会使地震地面运动响应出现长尾波现象,竖向地震作用对结构的水平地震响应影响很大。
Aiming at the dynamic interaction between soil and buildings, this paper establishes a studied block model for the study of the interaction between soil and structure, and presents a numerical method for the fluctuation of the interaction between the building and the foundation. The method is convenient for studying the seismic response of the buildings in the city. The numerical simulation results show that the presence of buildings in the city will cause long-tail wave motion in response to earthquake ground motion, and the vertical seismic effect has a great influence on the horizontal seismic response of the structure.