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之江大桥主塔为拱形钢塔,塔区为深水区域,索塔高度为90.5m。之江大桥拱形施工精度要求高,高塔施工控制以及下横梁施工质量是索塔施工的关键问题。钢塔节段安装施工时,针对塔区位于深水区,塔高且为拱形,风大、质量要求高、工期紧。为了保证线形其他构造不能附壁的特点,索塔施工中研制了自升门式液压提升系统进行吊装,取得很好的效果,详述了其设计与施工,为类似的大型结构物的吊装提供借鉴。
The main tower of the Zhijiang Bridge is an arch-shaped steel tower, the tower area is a deepwater area, and the tower height is 90.5m. The construction of the arch bridge of Zhijiang Bridge requires high precision, construction control of the tower and construction quality of the lower beam are the key issues in the construction of the pylon. Steel tower segment installation construction, for the tower area is located in the deep water area, the tower is high and arch, the wind, high quality, tight schedule. In order to ensure that other linear structures can not be attached to the wall, self-elevating hydraulic hoisting system was developed during the pylon construction, which achieved good results. The design and construction were described in detail, providing hoisting for similar large structures Learn from