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(1 深圳市萬創(chuàng)建筑設(shè)計(jì)顧問有限公司, 深圳 518055; 2 北京科技大學(xué)土木與資源工程學(xué)院,北京 100083; 3 中國建筑標(biāo)準(zhǔn)設(shè)計(jì)研究院, 北京 100048)

摘要: 考慮幾何初始缺陷和材料非線性,對(duì)帶鋼管混凝土端柱的雙層鋼板-內(nèi)填混凝土組合剪力墻進(jìn)行有限元彈塑性整體穩(wěn)定性分析,研究高度、寬度、厚度、鋼板與鋼管厚度、混凝土強(qiáng)度和鋼材強(qiáng)度等參數(shù)對(duì)墻體整體穩(wěn)定性能的影響. 通過有限元分析,得到極限穩(wěn)定承載力、荷載-位移曲線和與組合剪力墻發(fā)生失穩(wěn)時(shí)的應(yīng)力云圖. 采用三項(xiàng)式和《鋼結(jié)構(gòu)設(shè)計(jì)標(biāo)準(zhǔn)》(GB 50017—2017)的整體穩(wěn)定系數(shù)公式進(jìn)行分段擬合,擬合出整體穩(wěn)定系數(shù)計(jì)算公式.最后提出軸壓作用下的組合剪力墻的極限穩(wěn)定承載力公式. 結(jié)果表明:擬合公式計(jì)算的整體穩(wěn)定系數(shù)略低于有限元模擬結(jié)果,說明本文提出的整體穩(wěn)定系數(shù)計(jì)算公式較為安全合理.

關(guān)鍵詞: 雙層鋼板-內(nèi)填混凝土組合剪力墻; 極限穩(wěn)定承載力; 整體穩(wěn)定; 設(shè)計(jì)方法

中圖分類號(hào):TU391. 624 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)10-0040-07

DOI:10. 19701 / j. jzjg. 20211886

Overall stability analysis of composite shear wall with double steel plate-infilled concrete

SUN Xiang1, PEI Xiaoying2, YANG Yuqing2, WANG Zhe3, MU Zaigen2

(1 Shenzhen Wanchuang Architectural Design Consulting Co. , Ltd. , Shenzhen 518055, China; 2 School of Civiland Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3 China ArchitectureStandards Design and Research Institute, Beijing 100048, China)

Abstract: Considering geometric initial defects and material nonlinearity, finite element elastic-plastic overall stabilityanalysis of composite shear wall with double steel plate-infilled concrete with concrete-filled steel tubular columns wasconducted. The effects of height, width, thickness, steel plate and steel tube thickness, concrete strength and steelstrength on the overall stability of composite shear wall were studied. Through the finite element analysis, the ultimatestable bearing capacity, load-displacement curve and stress nephogram when the composite shear wall is unstable wereobtained. Trinomial and overall stability coefficient formula of Standard for design of steel structures (GB 50017—2017)were used for segmental fitting, and the formula for calculating overall stability coefficient was fitted. Finally, the ultimatestable bearing capacity formula of composite shear wall under axial compression was proposed. The result shows that overallstability coefficient calculated by the proposed formula is slightly lower than the finite element calculation result, whichindicates that the overall stability coefficient formula is more conservative and reasonable.

Keywords:composite shear wall with double steel plate-infilled concrete; ultimate stable bearing capacity; overallstability; design method

∗ 國家自然科學(xué)基金資助項(xiàng)目(51578064),北京市自然科學(xué)基金項(xiàng)目(8172031).

第一作者:孫翔,學(xué)士,工程師,主要從事鋼結(jié)構(gòu)設(shè)計(jì)工作,Email:sunx48@ vanke. com.

[引用本文] 孫翔,裴笑瑩,楊雨青,等. 雙層鋼板-內(nèi)填混凝土組合剪力墻整體穩(wěn)定性分析[ J]. 建筑結(jié)構(gòu),2023,53(10):40-46. SUN Xiang,PEI Xiaoying,YANG Yuqing,et al. Overall stability analysis of composite shear wall withdouble steel plate-infilled concrete[J]. Building Structure,2023,53(10):40-46.