(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)

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 λmin 的合理取值给出了建议.

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

中图分类号:TU318+. 2 文献标志码:A 文章编号:1002-848X(2023)12-0061-07

DOI:10. 19701 / j. jzjg. LS220020

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

ZHOU Zhijin1, LUO Xiaoyong2, CHEN Wei1, CHEN Hui1, MENG Can1, XIA Shengsheng1

(1 Xiangtan Architectural Design Institute Group Co. , Ltd. , Xiangtan 411100, China; 2 Loudi ConstructionDrawing Review Service Co. , Ltd. , Loudi 417000, China)

Abstract: The stability analysis of shear wall is an important part of the shear wall design. Based on the elastic bucklingtheory of thin plate and the finite element eigenvalue buckling analysis method, the stability calculation analysis of shearwall provided by the Technical specification for concrete structures of tall building ( JGJ 3—2010) was compared andanalyzed. 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 stresscharacteristics of shear wall cannot be accurately reflected. The stability of shear wall is estimated too low, and the overallstability cannot be ignored for irregular shear walls. Based on engineering examples, it is recommended that the threedimensional buckling analysis can be used to supplement the stability calculation of shear wall in practical engineering. Theinfluences of the local stability and overall stability of shear wall, the actual constraint are comprehensively considered. Thereasonable value of critical buckling factor λmin was also given according to the research on the value of the critical bucklingfactor for the overall stability analysis of different structures.

Keywords:stability of shear wall; buckling analysis; critical load; buckling factor; thin plate bucking theory

第一作者:周志锦,硕士,高级工程师,一级注册结构工程师,主要从事结构设计与管理工作,Email:49297873@ qq. com.

[引用本文] 周志锦,罗晓勇,陈威,等. 基于弹性屈曲分析的剪力墙稳定性验算及工程应用[J]. 建筑结构,2023,53(12):61-67. ZHOU Zhijin,LUO Xiaoyong,CHEN Wei,et al. Stability analysis of shear wall based on elastic bucklinganalysis and engineering application[J]. Building Structure,2023,53(12):61-67.