自锚式悬索桥加劲梁剪力滞模型试验研究  

Model Test Study of Shear Lag of Stiffening Girder of Self-Anchored Suspension Bridge

作　　者：周青虎[1] 蒲黔辉[1] 夏招广[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《桥梁建设》2008年第6期15-17,共3页Bridge Construction

摘　　要：通过1∶2缩尺预应力混凝土模型试验,研究成都清水河独塔自锚式悬索桥Π形主梁的剪力滞效应。试验结果表明,该桥主梁剪力滞系数比按我国公路桥规计算的值要小,该桥主梁在施工阶段有较大的安全储备,结构是安全的。This paper investigates the shear lag effect of the prestressed concrete （PC） Ⅱ- shape main girder of Qingshui River Single-Tower Self-Anchored Suspension Bridge in Chengdu by means of the model test of 1 ： 2 reduced scale PC girder. The results of the test indicate that the shear lag factors of the main girder are less than the values calculated in accordance with the specifications for highway bridges in China, the safety margin of the girder at construction stage is considerably great and the structure is safe.

关 键 词：自锚式悬索桥 Ⅱ形梁 剪力滞 模型试验 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]