腹板开矩形洞口连续组合梁有限元分析  

Finite Element Analysis on Continuous Composite Beams with Rectangular Web Openings

作　　者：李龙起[1] 王俊[1] 

机构地区：[1]许昌学院土木工程学院,河南许昌461000

出　　处：《许昌学院学报》2016年第5期130-134,共5页Journal of Xuchang University

基　　金：许昌学院科研基金项目(2016070)

摘　　要：为研究腹板开矩形洞口连续组合梁弹性阶段的受力特征,对腹板开洞组合梁进行了有限元模拟分析.研究内容为剪切连接件(栓钉)间距和荷载变化对组合梁挠曲变形、滑移以及轴力的影响规律.结果表明:组合梁的挠度以及界面滑移与栓钉间距成正比关系,组合梁洞口段发生剪切变形使挠度和滑移均呈"直线型"变化;腹板开洞使带洞跨混凝土板承担的轴力比无洞跨混凝土板承担的轴力明显减少.另外,实践中可以通过加密栓钉达到减少腹板开洞组合梁挠度和界面滑移的目的.In order to study the mechanics characteristics of continuous composite beams with rectangular web openings in the elastic stage,a composite beam with web openings was simulation analyzed by ANSYS. The effect rule of the shear connector spacing and the load variation to the flexural deformation of continuous composite beams is studied. The results show that the deflection of composite beam and the interface slip are proportional to the spacing of the shear connector,and the deflection and slip showed a linear change because of shearing deformation. The axial force undertaking by concrete slabs with web openings was significantly lower than that without web openings. In addition,the study can be close welding in order to reduce the deflection and interface slippage of composite beams with web openings in practice.

关 键 词：连续组合梁 腹板开洞 有限元 滑移 挠曲变形 

分 类 号：TU375.1[建筑科学—结构工程]