洞口对轻钢骨架轻混凝土组合墙平面外抗弯性能的影响  

Influence of Openings on Out⁃of⁃plan Flexural Performance of Light Steel Skeleton Light Concrete Composite Wall

作　　者：王瑞[1] 赵博 曹万林[1] 杨兆源 徐涛 王红兵 WANG Rui;ZHAO Bo;CAO Wanlin;YANG Zhaoyuan;XU Tao;WANG Hongbing(School of Architectural Engineering,Beijing University of Technology,Beijing 100124,China;China Communications Construction Group Co.,Ltd.,Beijing 100022,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Anhui Sijian Holding Group Co.,Ltd.,Hefei,Anhui 230088,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中交建筑集团有限公司,北京100022 [3]清华大学土木工程系,北京100084 [4]安徽四建控股集团有限公司,安徽合肥230088

出　　处：《施工技术（中英文）》2024年第17期162-170,共9页Construction Technology

基　　金：住房和城乡建设部研究开发项目(K20200094);国家自然科学基金面上项目(52378116)。

摘　　要：对2个足尺轻钢骨架轻混凝土组合墙板试件进行平面外抗弯性能试验研究,分析设置窗洞口对轻钢骨架轻混凝土组合墙平面外破坏特征、荷载⁃挠度曲线、刚度及其退化的影响。试验表明,轻钢骨架轻混凝土组合墙平面外受弯状态下,墙板受拉侧裂缝沿龙骨发展;开设窗洞口后,窗洞口角部出现应力集中现象,裂缝从窗角向四周延伸。轻钢骨架轻混凝土组合墙设置窗洞口后,极限承载力降低26.22%,平面外抗弯刚度降低48.01%。基于试验建立轻钢骨架轻混凝土组合墙精细化有限元模型,并进行平面外受力性能数值模拟和参数分析,分析轻钢龙骨厚度和墙板厚度等变量对墙板平面外抗弯性能的影响。Out⁃of⁃plan bending tests were carried out on two full⁃scale lightweight steel⁃framed lightweight concrete composite wall panel specimens to analyze the effects of window openings on the out⁃of⁃plan damage characteristics,load⁃deflection curves,initial stiffness and its degradation.The test shows that,under the out⁃of⁃plan bending condition of lightweight steel frame lightweight concrete composite wall,the cracks on the tensile side of the wall panel develop along the distribution keel,after opening the window openings,the stress concentration phenomenon occurs at the corners of the window openings,and the cracks extend from the corners of the windows to the surroundings.The ultimate bearing capacity of the lightweight steel skeleton lightweight concrete composite wall was reduced by 26.22%.A refined finite element model of the lightweight concrete composite wall with lightweight steel frame was established on the basis of the test,the numerical simulation and parametric analysis of the out⁃of⁃plan force performance was carried out,and the effects of variables,such as the thickness of the lightweight steel keel and the thickness of the wall panels on the out⁃of⁃plan bending performance of the wall panels were discussed.

关 键 词：装配式建筑 组合墙 抗弯性能 试验 数值模拟 

分 类 号：TU398.9[建筑科学—结构工程]