刘海卿^1,2，邱晓慧¹，刘  东¹
    (1 辽宁工程技术大学建筑工程学院，阜新123000; 2 大连理工大学土木水利学院，大连116024)

[摘要] 运用LS-DYNA软件对两种工况下的底框多层砌体结构在高烈度地震作用下进行倒塌破坏的全过程模拟。研究结果表明：底层框架破坏，造成上部砌体结构失稳，最终导致结构整体的倒塌，增大底层框架柱的尺寸可以有效减缓结构的破坏时问、减轻结构破坏程度。该成果利用模拟的可视化再现地震时建筑结构的倒塌过程。
[关键词] 底框砌体结构；高烈度区；倒塌破坏；不同工况

Characteristic analysis for collapse of masonry structure of bottom frame in high earthquake intensity regions
Liu Haiqing^1,2, Qiu Xiaohui¹, Liu Dong¹
(1 College of Engineering and Architecture, Liaoning Technical University, Fuxin 123000, China; 2 College of Civil and Hydraulic, Dalian University of Technology,  Dalian  116024, China)

Abstract: In order to research the rule of the earthquake damage of structural system thoroughly and analyze failure mechanism and the factor of resisting collapse, the whole process from the damage to the collapse of masonry structure with bottom frame under high-intensity earthquake is simulated by using LS-DYNA software. The results show that the damage ofbottom frame causes instability of the upper part which eventually leads to the collapse of the whole structure. It can effectively slow down the time of destruction of the structure, reduce the damage of level of the structure by increasing the size of the column of the bottom frame. The result presents the whole process of the collapse at the earthquake action by using visual method, which proposes the weaknesses of structure.
Keywords: masonry structure ofbottom frame; high earthquake intensity region; collapse; different load