结构工程师Issue(5)：102-109,8.
罕遇地震作用下底框砌体房屋裂缝开展分析
Analysis of Crack Development of Bottom Frame Masonry Structure under Rare Earthquake
摘要
Abstract
Taking the house of bottom frame masonry structure as a study object a finite element model is es -tablished this paper uses EI-CENTRO seismic waves after amplituding and undertakes structural elastic-plastic analysis under a rare earthquake is performed .Meanwhile , by adding shear walls a finite element model of bot-tom frame-shear masonry structure was established and crack development before and after adding shear walls was compared .The analysis result shows:the bottom frame of the original structure induces serious concentra-tion of elastic-plastic deformation and the angle of displacement cannot meet the demand of earthquake fortifi -cation in current code;the ends of the bottom frame column the lower part of the cross wall in the transition layer are weak components of this structure; after adding shear walls , the bottom floor displacement reaction decreases , but the transition layer displacement reaction increases;cross cracks in the third layer are similar to the transition layer of the original structure , which indicates the need to add reasonable shear walls .关键词
罕遇地震/底框砌体房屋/弹塑性分析/裂缝Key words
rare earthquake/bottom frame masonry structure/elastic-plastic analysis/crack引用本文复制引用
刘砚山,童丽萍..罕遇地震作用下底框砌体房屋裂缝开展分析[J].结构工程师,2014,(5):102-109,8.基金项目
国家“十二五”科技支撑计划课题（2013BAL01B04），郑州市科技领军人才项目 （）
