刚性悬索加劲钢桁梁桥空间受力分析  

SPATIAL ANALYSIS OF RIGID SUSPENSION STIFFENED STEEL TRUSS BRIDGE

作　　者：邹锦华[1,2] 黄永辉[2] 王荣辉[2] 谭明鹤[2] 

机构地区：[1]广东工业大学土木与交通工程学院,广州510006 [2]华南理工大学土木与交通学院,广州510640

出　　处：《低温建筑技术》2010年第6期41-42,49,共3页Low Temperature Architecture Technology

基　　金：广东省公路管理局科技计划项目(粤公研2009-16);广东工业大学博士启动基金项目(校博士083003)

摘　　要：结合东江大桥的结构特点,建立考虑节点刚度影响的刚性悬索加劲钢桁梁桥空间受力计算模型。计算结果表明:节点刚度对于结构的整体位移不可忽略,应充分考虑节点刚度对杆件内力的影响;由弯矩引起的附加应力可占到杆件总应力的30%左右;设计时为计算简便,可以直接用刚接模型的最大应力作为设计控制应力,但更为精确的计算应考虑整体节点连接刚度的影响。In this paper,a spatial analysis model of Dong Jiang Bridge considering inregral joint rigidity of rigid suspension stiffened steel truss bridge is established.The computed results indicate that the node rigidity cannot be neglected calculating the structure whole displacement and the member endogenic force;the additional stress is 30%,which is caused by the bending moment;for computation more simply in designing,the design control stress might use the calculation results of the biggest stress of the rigid model directly.But a more precise computation results should consider the influence of the whole connection joint rigidity.

关 键 词：刚性悬索加劲钢桁梁桥 节点刚度 受力 分析 

分 类 号：TU391[建筑科学—结构工程]