考虑滑移效应的三塔结合梁斜拉桥桥面板有效宽度分析  

Study on Effective Width of Concrete Slab in Composite Cable-stayed Bridge Considering Slip Effect

作　　者：刘沐宇[1] 刘洋[1] 袁卫国[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2012年第5期877-880,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：武汉市科技攻关项目资助(批准号:201160923308)

摘　　要：结合梁斜拉桥拉索锚固在桥面两侧的钢主梁上,造成桥面板有效宽度分布不均匀.文中以武汉二七长江大桥为研究背景,建立典型节段的空间有限元模型,考虑钢主梁与桥面板间的滑移,计算分析了多种荷载工况下桥面板中应力分布及有效宽度,探讨了抗剪连接程度对桥面板有效宽度的影响,确定了结合梁斜拉桥最佳抗剪连接程度.The cables of cable-stayed Bridges anchorage at the both sides of the beam steel causes the bridge deck in the apparent effective width of concrete slab. Based on Wuhan Yangtze River Bridge,the paper establishes typical finite element model of space segment considering the slip between steel girder and concrete slab, the stress distribution and efficient width of the main girder under the multi- load conditions was calculated. Comparing with the analysis of the degree of shear connection on the effective width of the bridge panel, the best cable-stayed bridge girder degree of shear connection was determined, which can be used to provide reference for similar bridge design and construction.

关 键 词：结合梁斜拉桥 剪力滞 有效宽度 滑移 抗剪连接程度 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]