摘要
以有无边框龙骨、面板厚度、加载方向、横龙骨数量、有无洞口、跨度和宽度为基本参数,对7组共11个复合墙板足尺试件进行抗弯试验研究并给出了优化建议,得到了各试件的破坏模式及其荷载-位移曲线、变形分布曲线和钢龙骨荷载-应变曲线.结果表明:有无边框龙骨、面板厚度、横龙骨数量、跨度和宽度对试件的极限抗弯承载力影响显著;加载方向不同,试件破坏模式区别较大;试件开洞对其极限承载力有一定影响但仍能满足使用要求;在正常使用极限荷载作用下,试件承载力及变形均可满足使用要求且有较大安全余量.
Abstract
This article conducts bending tests on 7 groups of 11 full-scale composite wall panel specimens,with frameless keel,panel thickness,loading direction,number of horizontal keels,presence or absence of openings,span,and width as basic param-eters.The failure mechanism,load displacement curve,deformation distribution curve,and steel keel load strain curve of each speci-men are obtained.The results show that the presence or absence of frame keel,thickness difference of panel,number of horizontal keels,span and width have a significant impact on the ultimate bending bearing capacity of the specimen.The different loading di-rections result in significant differences in the failure modes of the specimens.The opening of the specimen does have a certain impact on its ultimate bearing capacity,but it still meets the requirements for use.Under normal use ultimate load,the bearing ca-pacity and deformation of the specimen can meet the requirements of use and have a large safety margin.
基金项目
"十四五"国家重点研发计划项目(2022YFC3801400)
维普
万方数据