复杂应力状态下抗剪连接件应力在组合梁桥的实验研究  

Experimental Research on Shear Connectors' Stress of Composite Beam Bridge Under Complex Stress Condition

作　　者：冯玮 

机构地区：[1]中交远洲交通科技集团有限公司,石家庄050051

出　　处：《工程建设与设计》2014年第7期96-98,共3页Construction & Design for Engineering

摘　　要：为了研究组合梁在复杂应力状态下抗剪连接件的力学性能,进行了两个布置有不同类型的抗剪连接件的小规模模型测试。这些模型的设计都是基于广州的一座组合梁桥。详细地研究了在相同边界条件下的刚性抗剪连接件模型和弹性抗剪连接件模型的钢筋混凝土交界面的相对滑移的比较分析。在三种不同类型的荷载形式作用下的两种抗剪连接件的反应也进行了比较。模型测试结果表明混凝土的极限承载能力是决定钢筋混凝土交界面上的相对滑移的关键因素而且刚性抗剪连接件和弹性抗剪连接件的区别是非常明显的。这份报告对于组合梁的抗剪连接件的未来研究和设计很有参考价值。In order to study the mechanical properties of shear connectorsfor a composite beam under complex stressconditions, two 1：2reduced-scale model tests with different types of shear connectors are conducted. These models are designed base on a real composite beam bridge in Guangzhou. Comparative analysis about the relative slipping on the steel-concrete interface of the rigid shear connector model and flexible shear connector model under the same boundary conditions is studied in detail. Responses of two types of shear connectors under three different load cases are also compared. The model test results s how that the ultimate bearing capacity of concrete is the key factor of relative slipping on the steel-concrete interface and differences between rigid and flexible shear connectors are large. It is useful as references for future research and designs of shear connectors in composite beams.

关 键 词：组合梁桥 抗剪连接件 复杂应力 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.216[交通运输工程—道路与铁道工程]