论塘屋岭特大桥连续刚构合龙施工技术

Discussion on Closure Construction Technology of Continuous Rigid Struc-ture of Tangwuling Super-large Bridge

连续刚构桥是目前最为常用的预应力混凝土高墩大跨径桥梁桥型之一,通常采用悬臂浇筑法工艺施工,属连续体系梁式桥。连续刚构合龙段的施工是悬臂浇筑技术中非常关键的工序之一,文章结合广西灌阳至凤凰高速公路塘屋岭特大桥工程实例,介绍了大跨径连续刚构桥悬臂施工中合龙段的施工技术及注意事项。

Continuous rigid frame bridge is one of the most commonly used prestressed concrete high-pier large-span bridge types,it is usually constructed by cantilever pouring method and belongs to the continuous system beam-type bridge.The cloture section construction of continuous rigid frame is one of the key processes in cantilever pouring technology.This article described the cloture section construction technology and precautions in the cantilever construction of largespan continuous rigid frame bridge in combination with the engineering example of Tangwuling Super-large Bridge in Guangxi Guanyang-Fenghuang Expressway.