【作者】 信任； 王亚军； 王庆霖； 宋璨； 刘伟；

【Author】 XIN Ren;WANG Yajun;WANG Qinglin;SONG Can;LIU Wei;School of Civil Engineering,Xi’an University of Architecture and Technology;China IPPR International Engineering Co.,Ltd.;

【机构】 西安建筑科技大学土木工程学院； 中国中元国际工程有限公司；

【摘要】 地震作用下墙体平面应力状态是砌体结构内力分析的重要依据,开洞墙体应力分布规律是影响砌体结构产生不同破坏模式的关键因素.借助有限元数值模拟对砌体结构开洞墙体地震作用下平面应力的计算与分析进行了深入的研究.首先依据整体建模思路明确了开洞墙体宏观应力分布状态;接着利用分离法非线性分析详细讨论了各向平面应力在洞口相邻墙段内的分布与变化规律;最后初步提出了不同地震烈度下砌体结构墙体发生开裂破坏的基本过程.研究成果为砌体结构开洞墙体的试验研究提供了依据,特别是为窗下墙与窗间墙抗震设计方法的完善奠定了理论基础.更多还原

【Abstract】 The seismic wall plane stress state is an important basis for internal force analysis of masonry structure.The stress distribution of walls with openings is key factor affecting different failure modes of masonry structure.In this paper,comprehensive and in-depth study of calculation and analysis of seismic plane stress are carried out by means of finite element numerical simulation.First,the stress distribution of walls with opening holes is determined based on integral modeling method.And then,a detail discussion about change of plane stress in the holes-adjacent walls is made.Finally,the failure process of masonry walls is presented under different earthquake intensities.The research results provide technical supports for masonry structure experimental studies,which are expected to be useful for the seismic design methods of masonry structure members.更多还原