建筑结构地震连续倒塌影响距离仿真模拟研究

发布时间：2018-02-27 04:00

本文关键词： 建筑结构连续倒塌瓦砾堆积影响距离仿真模拟　出处：《四川建筑科学研究》2016年06期 　论文类型：期刊论文

【摘要】：为了统计研究地震作用下建筑结构发生倒塌形成瓦砾堆积的分布情况及倒塌影响距离,基于显式动力分析软件ANSYS/LS-DYNA,以3层砌体结构为例,建立了仿真计算模型,通过施加5种地震工况进行计算分析,模拟了砌体结构在地震作用下的连续性倒塌破坏模式。根据倒塌过程中出现的"飞石"现象,将建筑结构地震倒塌的影响距离分为震时的安全距离以及震后瓦砾堆积分布的主要影响距离,并且分别对其进行了统计研究。结果表明,数值模拟方法可以准确地模拟建筑结构在地震作用下的连续性倒塌破坏模式,并且能够为研究建筑结构地震倒塌的影响距离提供新的思路。
[Abstract]:In order to study the distribution of rubble accumulation caused by collapse of building structure under earthquake action and the influence distance of collapse, based on the explicit dynamic analysis software ANSYS / LS-DYNA, a simulation calculation model of three-story masonry structure is established, taking the three-story masonry structure as an example. The continuous collapse failure mode of masonry structure under earthquake action is simulated by applying 5 kinds of seismic conditions. According to the phenomenon of "flying stone" in the process of collapse, The influence distance of earthquake collapse of building structure is divided into the safe distance during earthquake and the main influence distance of integral distribution of rubble pile after earthquake, and the statistical study is carried out respectively. The results show that, Numerical simulation method can accurately simulate the continuous collapse failure mode of building structure under earthquake, and can provide a new idea for studying the influence distance of earthquake collapse of building structure.
【作者单位】：北京工业大学抗震减灾研究所;北京工业大学建筑与城市规划学院;
【基金】：国家科技支撑计划课题(2015BAK14B01) 北京市教育委员会科技计划一般项目(KM201610005029)
【分类号】：TU312.3

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