大跨度预应力混凝土矮塔斜拉桥合龙施工技术

Construction Technology for Closure of Large-span Prestressed Concrete Extradosed Cable-stayed Bridge

长山大桥主桥为大跨度预应力混凝土矮塔斜拉桥,介绍了该桥边跨及中跨合龙施工技术及施工注意事项,阐述了平衡重设置、顶推力施加、劲性骨架锁定等关键工序操作要点及实施效果,为类似工程施工提供参考。

The main bridge of Changshan Bridge is a large-span prestressed concrete extradosed cable-stayed bridge.The construction technology and matters needing attention during the construction for closure of side span and midspan of the bridge are introduced,and the operation points of critical processes like setup of counterweight,imposed jacking force,stiff skeleton locking as well as the implementation effect are elaborated,so as to provide reference for the construction of similar project.