多向地面运动作用时铅芯橡胶隔震房屋模型振动台试验研究

摘要

本文对铅芯橡胶隔震支座房屋模型进行了振动台试验研究，分别对模型结构输入了单向、双向、三向地震动，对三种地震动作用下基础隔震模型的结构地震反应做了分析比较，结果表明水平双向地震动输入时主轴方向结构地震反应比单向输入时小，而三向地震动作用下结构主轴方向地震反应较单向输入时有明显增加，竖向与水平地面运动的相关性对结构反应的影响不能忽视。%Shaking table tests on model building with lead rubber bearing were conducted underMulti-direction gound motion components. Experimental results of the model building under different types of inputswere compared here. The results prove that the structural response under two horizontal components is smaller than that under single component but the response increases much more under three direction components.