自锚式悬索桥主缆无应力长度计算  

Calculation of Main Cable Zero- stress Length for Self- anchored Suspension Bridge

作　　者：陈涛[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆市400074

出　　处：《北方交通》2015年第5期9-11,14,共4页Northern Communications

摘　　要：主缆无应力长度的计算,是悬索桥施工监控中的重要内容。利用Midas/civil对松原天河北汊桥建立有限元模型,考虑主索鞍和散索鞍处圆曲线影响,对主缆无应力长度进行修正。由于主缆从边跨至中跨通过鞍槽进行了竖向和横向两次转向,因此需要对竖向和横向主缆的无应力长度进行修正,为计算空间索面自锚式悬索桥主缆无应力长度提供参考。The calculation of main cable zero - stress length is the important content in the construction supervision control of suspension bridge. Midas/civil is used to build finite element model foe Songyuan Tianhe North Branch Bridge. Considering the circle curve influences of main cable saddle and splay saddle, the zero - stress length of main cable is amended. As the main cable from the side span to mid - span is vertical and horizontal two turning through the saddle groove, needing to revise the zero - stress length of main cable of the vertical and horizontal, providing a reference for the calculation of spatial cable plane self - anchored suspension bridge cable zero - stressed length.

关 键 词：主缆无应力长度 自锚式悬索桥 空间索面 长度修正 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]