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(1 湘潭市建筑設(shè)計(jì)院集團(tuán)有限公司, 湘潭 411100; 2 婁底市施工圖審查服務(wù)有限公司, 婁底417000)
摘要: 剪力墻穩(wěn)定性是剪力墻設(shè)計(jì)中需要驗(yàn)算的重要內(nèi)容,采用薄板彈性屈曲理論和有限元特征值屈曲分析方法對《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》(JGJ 3—2010)提供的剪力墻穩(wěn)定性計(jì)算公式進(jìn)行了對比分析. 結(jié)果表明:《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》(JGJ 3—2010)公式對于高寬比較大、彈性約束、復(fù)雜約束等情況適用性不足,無法準(zhǔn)確反映剪力墻真實(shí)受力特征,過低地估計(jì)了剪力墻穩(wěn)定性. 對于異形截面剪力墻,不能忽略對其墻體整體穩(wěn)定性的計(jì)算. 結(jié)合工程實(shí)例,推薦在實(shí)際工程中采用三維屈曲分析來驗(yàn)算剪力墻的穩(wěn)定性,以綜合考慮剪力墻墻肢局部穩(wěn)定、墻體整體穩(wěn)定、墻體實(shí)際約束條件等影響. 根據(jù)不同結(jié)構(gòu)整體穩(wěn)定分析臨界屈曲因子的取值研究,對剪力墻彈性屈曲分析臨界屈曲因子 λmin 的合理取值給出了建議.
關(guān)鍵詞: 剪力墻穩(wěn)定性; 屈曲分析; 臨界荷載; 屈曲因子; 薄板屈曲理論
中圖分類號(hào):TU318+. 2 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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:周志錦,碩士,高級(jí)工程師,一級(jí)注冊結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)設(shè)計(jì)與管理工作,Email:49297873@ qq. com.
[引用本文] 周志錦,羅曉勇,陳威,等. 基于彈性屈曲分析的剪力墻穩(wěn)定性驗(yàn)算及工程應(yīng)用[J]. 建筑結(jié)構(gòu),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.
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