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为了解一种适用于高烈度寒冷地区村镇建筑的砂垫层-滑移隔震复合体系的地震反应特征,采用ABAQUS有限元数值模拟分析方法,对设防烈度为7度和8度、设计基本加速度分别为0.15g、0.20g和0.30g三种情况的算例模型进行弹塑性动力时程分析。分析结果表明:复合隔震体系综合了砂垫层和普通摩擦滑移结构的特点,具有明显的减震作用,且减震率随地震动强度的增加而增大。
In order to understand the seismic response characteristics of a sand cushion-slip-isolation composite system applicable to the construction of villages and towns in high-intensity and cold regions, the ABAQUS finite element numerical simulation method was used to analyze the seismic intensity of fortification intensity of 7 degrees and 8 degrees and the design of basic acceleration Respectively, 0.15g, 0.20g and 0.30g cases of three cases of elastic-plastic dynamic time-history analysis. The results show that the composite isolation system integrates the characteristics of sand cushion and common frictional sliding structure, and has obvious damping effect. The damping rate increases with the increase of ground vibration intensity.