空间线形自锚式悬索桥大转角吊索技术研究

On Large Rotation Angle Hanger Technology of Spatial Cable Self-anchored Suspension Bridge

南京长江隧道工程江心洲右汊大桥为自锚式空间悬索桥,主缆从空缆状态到成桥状态,主缆横桥向位移较大,吊索须跟随主缆横向移动、转动及伸缩。通过一种新型的吊索结构,吊索可转动较大的角度,适应新型空间式悬索桥的问题,同时实现了吊索长度的调节。

Right Branch Main Bridge in Jiangxin Island of Nanjing Yangtze River Tunnel Project is a spatial cable self-anchored suspension bridge. Main cable＇ s cross bridge displacement is large from cable-finished stage to dead-load state, and the hanger must move, rotate and flex with the main cable. We design a new hanger structure that can rotate a larger angle to adapt to the spatial suspension bridge, and it can also adjust the hanger＇s length.