型钢混凝土板横向受力模式分析  

Analysis of the Lateral Load-bearing Behavior of Steel-concrete Composite Slabs

作　　者：陈云鹏 CHEN Yunpeng(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063

出　　处：《交通科技》2024年第6期70-75,共6页Transportation Science & Technology

摘　　要：为明确型钢混凝土板的横向受力模式,通过考虑型钢单梁的刚度差异及连接部位的损伤情况,提出型钢混凝土板的荷载横向分布系数计算方法。在此基础上建立了与实桥荷载试验吻合较好的型钢混凝土板有限元模型,通过对比理论计算、有限元及传统刚接板法的横向荷载分布系数,分析文中理论的有效性及型钢混凝土板的横向受力模式。结果表明,型钢混凝土板由于混凝土损伤及刚度差异因素,其横向分布均匀性弱于刚接板法,在荷载作用位置的荷载承担情况大于刚接板法计算得到的结果,导致刚接板法计算得到的极限荷载大于实际极限状态。To clarify the transverse stress distribution in steel-concrete composite slabs,the differences in stiffness between steel beams and the damage conditions at the concrete connection points are considered to propose a calculation method for determining the load transverse distribution coefficient of steel-concrete slabs.On this basis,a finite element model of the steel-concrete slab is developed,which is in good agreement with the actual bridge load test.The theoretical calculation results are compared and analyzed alongside those obtained from finite element analysis and the rigid connection plate method to research the effectiveness of the theory and the lateral stress mode of steel-concrete slabs.The findings indicate that due to concrete damage and stiffness differences,the lateral distribution uniformity of steel-concrete slabs is weaker than that of the rigid connection plate method.The load-bearing capacity of the steel-concrete slab at the load application position exceeds the value calculated by the rigid connection plate method,resulting in a limit load value from the rigid connection plate method being higher than the actual limit state.

关 键 词：横向分布 刚接板法 型钢混凝土板 

分 类 号：U441[建筑科学—桥梁与隧道工程]