基于弹性屈曲分析的剪力墙稳定性验算及工程应用  

Stability analysis of shear wall based on elastic buckling analysis and engineering application

作　　者：周志锦 罗晓勇 陈威 陈辉 孟灿 夏生生 ZHOU Zhijin;LUO Xiaoyong;CHEN Wei;CHEN Hui;MENG Can;XIA Shengsheng(Xiangtan Architectural Design Institute Group Co.,Ltd.,Xiangtan 411100,China;Loudi Construction Drawing Review Service Co.,Ltd.,Loudi 417000,China)

机构地区：[1]湘潭市建筑设计院集团有限公司,湘潭411100 [2]娄底市施工图审查服务有限公司,娄底417000

出　　处：《建筑结构》2023年第12期61-67,共7页Building Structure

摘　　要：剪力墙稳定性是剪力墙设计中需要验算的重要内容,采用薄板弹性屈曲理论和有限元特征值屈曲分析方法对《高层建筑混凝土结构技术规程》(JGJ 3—2010)提供的剪力墙稳定性计算公式进行了对比分析。结果表明:《高层建筑混凝土结构技术规程》(JGJ 3—2010)公式对于高宽比较大、弹性约束、复杂约束等情况适用性不足,无法准确反映剪力墙真实受力特征,过低地估计了剪力墙稳定性。对于异形截面剪力墙,不能忽略对其墙体整体稳定性的计算。结合工程实例,推荐在实际工程中采用三维屈曲分析来验算剪力墙的稳定性,以综合考虑剪力墙墙肢局部稳定、墙体整体稳定、墙体实际约束条件等影响。根据不同结构整体稳定分析临界屈曲因子的取值研究,对剪力墙弹性屈曲分析临界屈曲因子λ_(min)的合理取值给出了建议。The stability analysis of shear wall is an important part of the shear wall design.Based on the elastic buckling theory of thin plate and the finite element eigenvalue buckling analysis method,the stability calculation analysis of shear wall provided by the Technical specification for concrete structures of tall building(JGJ 3—2010)was compared and analyzed.The results show that the formulas in the Technical specification for concrete structures of tall building(JGJ 3—2010)are not applicable to situations such as large aspect ratio,elastic constraint and complex constraint,the true stress characteristics of shear wall cannot be accurately reflected.The stability of shear wall is estimated too low,and the overall stability cannot be ignored for irregular shear walls.Based on engineering examples,it is recommended that the three dimensional buckling analysis can be used to supplement the stability calculation of shear wall in practical engineering.The influences of the local stability and overall stability of shear wall,the actual constraint are comprehensively considered.The reasonable value of critical buckling factorλmin was also given according to the research on the value of the critical buckling factor for the overall stability analysis of different structures.

关 键 词：剪力墙稳定性 屈曲分析 临界荷载 屈曲因子 薄板屈曲理论 

分 类 号：TU318.2[建筑科学—结构工程]