双钢板-混凝土组合剪力墙压弯承载力数值模型及简化计算公式  

Numerical model and simplified formula of axial force-moment capacity of composite shear wall with double steel plates and infill concrete

作　　者：马晓伟[1] 聂建国[1] 陶慕轩[1] 卜凡民[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《建筑结构学报》2013年第4期99-106,共8页Journal of Building Structures

基　　金：国家自然科学基金项目(51178246);国家科技支撑计划项目(2011BAJ09B01);清华大学自主科研项目(2010203078)

摘　　要：基于双钢板-混凝土组合剪力墙构件材料的单轴本构关系,研发了分析组合剪力墙压弯性能的弹塑性数值模型,对构件的弯矩-曲率曲线以及压弯相关关系曲线进行分析,并对压弯承载力进行计算,该模型计算结果与有限元分析结果、试验结果吻合良好。基于该模型对组合剪力墙中部墙体承担弯矩比例进行统计,结果表明,组合剪力墙中部墙体在受弯过程中承担比例较大,设计中不可忽略。对组合剪力墙压弯承载力进行数值计算和参数分析,研究了极限状态下影响压弯承载力关键因素,并基于关键参数提出计算该类组合剪力墙极限状态压弯承载力的简化计算公式,将该简化公式计算结果与数值结果进行对比,并与文献中组合剪力墙试验进行对比验证,计算精度较高,该公式可用于双钢板-组合剪力墙压弯承载力设计。Based on the uniaxial stress-strain relationship curve of cross section material of the composite shear wall with double steel plates and infill concrete, the model for elastic and plastic analysis of axial force-moment capacity of the composite wall was developed. The moment-curvature curve and axial force and moment curve were analyzed by the model. The axial force-moment capacity was calculated. There is good agreement between the finite element analysis results and the experimental results. Based on numerical model, the rate of moment resisted of mid-wall of the shear wall was analyzed. The results indicate that the mid-wall occupies a high part of the total moment and it should not be ignored in design. Numerical calculation and parameter analysis were done to study the key factors for the axial force- moment capacity. The simplified formula for axial force-moment was conducted based on the key factors. The formula results fit well with the numerical model results and a set of experimental results. The proposed method can be used inthe practical design of the composite shear wall.

关 键 词：双钢板-混凝土组合剪力墙 数值模型 压弯承载力 简化公式 

分 类 号：TU398.2[建筑科学—结构工程] TU318.1