考虑混凝土板作用的腹板开洞钢-混凝土组合梁承载力有限元分析  

Fem analysis of bearing capacity of steel-concrete composite beams with web opening consideing concrete slab

作　　者：寇立亚[1,2] 胡夏闽[3] 

机构地区：[1]江苏城市职业学院建工系,江苏南京210019 [2]河海大学土木与交通学院,江苏南京210098 [3]南京工业大学土木工程学院,江苏南京210009

出　　处：《四川建筑科学研究》2012年第6期65-69,共5页Sichuan Building Science

摘　　要：腹板开洞组合梁在国外工程中已广泛应用。洞口的存在对组合梁的极限承载力有一定影响。本文针对现存的开洞组合梁极限承载力的计算公式进行比较。采用ANSYS软件进行有限元模拟,考虑混凝土板宽度和厚度对洞口抗弯和抗剪承载力的影响拟合出了混凝土板有效宽度的计算公式,为开洞组合梁的进一步研究提供了依据。Steel-concrete composite beam with web opening is widely used in overseas. The exiting of web openings has effect on the bearing capacity of composite beams in some extent. Two ways to calculate bearing capacities of steel-composite beams are introduced, and then the shortcomings of them are pointed out and modified ways are provided. It is evident that the modified ways are feasible. ANSYS software is used to simulate considering effects of the width and thickness of the concrete slab on the bear capacity and the formula of effective width of concrete slab of steel-concrete composite beams with web opening are given. The further research basis are provided.

关 键 词：钢与混凝土组合梁 腹板开洞 极限承载力 混凝土板有效宽度 有限元分析 

分 类 号：TU375[建筑科学—结构工程]