均布径向荷载下双铰蜂窝钢拱的挠度研究  

Research on deflection of two-hinged castellated steel arch beams under uniformly distributed radial loads

作　　者：袁伟斌[1] 许雷池 YUAN Weibin;XU Leichi(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学土木工程学院,浙江杭州310023

出　　处：《浙江工业大学学报》2020年第6期627-632,共6页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(Y19E080059)。

摘　　要：蜂窝拱是一种新型钢结构构件,其因截面形式合理、经济效益显著等特点而在工程中被广泛应用,但由于其受力性能复杂,相应的理论分析较匮乏。蜂窝构件的受力机理与夹层构件相似,因此可借鉴夹层构件理论开展蜂窝拱研究,通过建立位移表达式推导了蜂窝拱的总势能方程,根据最小势能原理求得了均布径向荷载下双铰蜂窝拱的挠度公式,并采用ABAQUS有限元软件对不同尺寸模型下的顶点挠度进行了求解验证。结果表明:该挠度公式具有一定的准确性,能满足工程应用的实际需要。Castellated arch beams are widely used as a load carrying member owing to their unique properties.However,little relevant theories can be found in the literature.It is known that the working mechanisms of sandwich components and castellated components are similar.In the present study,the theory of sandwich components is used to investigate the deflection of two-hinged castellated steel arch beams subjected to uniformly distributed radial loads.The new analytical model is deduced by using the energy method.A finite element analysis(FEA)is performed with the commercial software ABAQUS to validate the analytical model.A good agreement is shown between the analytical model and the FEA.Therefore,the proposed formula can be used to design the practical structures which contain castellated arch beams.

关 键 词：蜂窝拱 挠度 最小势能原理 有限元分析 

分 类 号：TU392[建筑科学—结构工程]