钢筋混凝土柱和剪力墙的屈曲分析  

Buckling analysis of reinforced concrete column and shear wall

作　　者：陈威 周志锦 陈辉 夏生生 CHEN Wei;ZHOU Zhijin;CHEN Hui;XIA Shengsheng(Xiangtan Architectural Design InstituteGroup Co.,Lud.,Xiangtan 411100,Hunan,China)

机构地区：[1]湘潭市建筑设计院集团有限公司,湖南湘潭411100

出　　处：《工程建设》2022年第8期32-37,共6页Engineering Construction

摘　　要：钢筋混凝土柱(以下简称“混凝土柱”)的计算长度系数的取值对于其稳定性和配筋起着决定性的作用,而钢筋混凝土剪力墙(以下简称“剪力墙”)的稳定性(屈曲荷载)计算则是剪力墙设计中的重要内容。本文从屈曲理论出发,由欧拉公式反推混凝土柱的计算长度系数,并验证由软件求得的计算长度系数的准确性;同时,基于薄板理论,研究剪力墙的屈曲荷载随高度变化的规律。研究结果表明:通过软件计算得到的混凝土柱计算长度系数与欧拉公式求得的理论值基本一致,可采用此计算长度系数对混凝土柱进行设计;对四边简支剪力墙,当h/b达到一定值时,随墙高度的增大其屈曲荷载变化不大,故对高度较大的剪力墙,采用薄板理论求得的屈曲荷载比规范计算值更合理。The value of the effective length factor of reinforced concrete column(hereinafter referred to as“concrete column”)plays a decisive role in its stability and reinforcement,the stability(buckling load)calculation of reinforced concrete shear wall(hereinafter referred to as“shear wall”)is an important part in the design of shear wall.Based on the buckling theory,the effective length factor of concrete column is deduced from Euler formula,and the accuracy of the calculated length factor obtained by the software is verified;At the same time,based on the thin plate theory,the variation of buckling load of shear wall with its height is studied.The results show that:the effective length factor of concrete column calculated by software is basically consistent with the theoretical value obtained by Euler formula,this effective length factor can be used to design concrete columns.To simply supported shear wall on four sides,When h/b reaches a certain value,the buckling load changes little with the increase of wall height.Therefore,for shear walls with large height,the buckling load calculated by thin plate theory is more reasonable than that calculated by code.

关 键 词：混凝土柱 剪力墙 计算长度系数 屈曲荷载 

分 类 号：TU398.2[建筑科学—结构工程]