底商多层砌体结构弹塑性地震反应计算方法  

Calculation method of elasto-plastic seismic response of multi-story masonry structure with first floor used as shops

作　　者：刘红彪[1] 刘现鹏[1] 张强[1] 韩阳[1] 

机构地区：[1]交通运输部天津水运工程科学研究所水工构造物检测诊断与加固技术交通行业重点实验室,天津300456

出　　处：《建筑结构》2014年第15期83-87,共5页Building Structure

基　　金：国家自然科学基金项目(51308517);交通运输部天津水运工程科学研究所基本科研项目(TKS140101)

摘　　要：对比分析了国内外6种无筋砌体结构材料的本构关系模型,指出了各个模型的优缺点。推荐了力学特性合理、工程应用性强的无筋砌体材料本构关系模型,并采用该本构关系模型进行了一个典型底商多层砌体结构弹塑性地震反应的计算分析。通过脉动测试,获得了底商砌体结构(震后)纵横向一阶固有频率和扭转频率,可作为有限元模型合理性判定的依据;弹塑性地震反应计算结果表明,该结构的纵向为薄弱方向,在9度大震的卧龙波作用下结构严重破坏。Six kinds of constitutive relation models of unreinforced masonry structure were compared and analyzed at home abroad, and the advantages and disadvantages of each model were pointed out. The constitutive relation model of unreinforced masonry structure which is reasonable in mechanical characteristics and excellent in engineering application was proposed, and it is used to calculate and analysis the elasto-plastic seismic response of typical masonry structure with first story used as shops. The first order natural frequency and torsional frequency of the structure were acquired with pulsation measurement, which can be used as the hasis for judging the rationality of the finite element model The elasto- plastic seismic response of the typical masonry structure shows that the stiffness of longitudinal direction of the structure is weaker than the others, and the structure badly damaged under the Wolong 9 degree earthquake.

关 键 词：本构关系 砌体结构 弹塑性分析 地震反应 

分 类 号：TU317.1[建筑科学—结构工程]