大跨度拱桥缆索吊装合理扣索力及预抬值计算  

Calculation of Proper Buckling Force and Prelifting Value of Cable Hoisting in Long-span Arch Bridge

作　　者：张依龙 ZHANG Yi-long(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州工业学院学报》2018年第2期28-31,共4页Journal of Lanzhou Institute of Technology

摘　　要：在无支架缆索吊装方法中,为了避免在拱桥的拱肋架设过程中扣索的张拉次数过多以及调索过于频繁等问题,采用直接计算出拱肋的预抬值来控制拱肋的标高,采用静力平衡法来计算出扣索的索力,根据相应的计算方法计算出拱肋预抬值,参考实际工程案例优化并验证计算方法的正确性和可靠性.In the raw support cable hoisting method,in order to reduce the times of cable tension in the arch bridge’s arch rib erection and avoid frequent adjust cable the prelift value of the arch rib is directly caculated to control the height of the arch rib.This paper applies the static balance method to calculate the cable force of the buckle cable and the prelift value of arch rib.The pre Apractical engineering case is employed to verify this method is correct and reliable.

关 键 词：重载铁路 合理扣索力 数值计算 静力平衡法 桁架式结构 拱肋吊装 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]