土—结构相互作用对地震反应的影响

On the influence of the soil structure's interaction on the seismic response

利用集总参数法建立了土—结构相互作用模型,分析了该模型下土结构相互作用对地震性能的影响,通过对单自由度体系地震反应数值的计算,对结构位移、速度和加速度进行了分析比较,同时得出了相互作用体系在不同的地面运动加速度作用下,质点的最大绝对加速度和最大水平地震作用力都较不考虑土结构作用时的地震反应数值有所折减。

The paper indicates the adoption of the lumped parameter method to establish the interaction model of the soil structure, analyzes the influence of the .soil structure＇ s interaction on the seismic performance, has the analysis and comparison of the structural displacement, speed and the accderation according to the calculation of the seismic response numbers in the single freedom system, and concludes the seismic response number reduces when the maximized absolute acceleration and the maximized horizontal seismic action power of the particle neglect the action of the soil structure under the interaction system in various ground movement acceleration.