大跨径斜拉桥换索工程实践  

Practice of Cable Replacement Project for Long Span Cable-stayed Bridge

作　　者：袁兰兰 

机构地区：[1]舟山市大陆连岛工程指挥部,浙江舟山316000

出　　处：《城市道桥与防洪》2010年第12期109-112,共4页Urban Roads Bridges & Flood Control

摘　　要：该文以一座7跨连续半漂浮体系混合式斜拉桥为实例,其主跨580 m,为扁平流线型钢箱梁,全桥共有斜拉索168根,斜拉索采用梁上销铰锚固,塔上单端张拉方式。在运营检查中发现斜拉索PE破损,为保证大桥的安全使用性能,必须对该索进行更换。该文对该桥换索的施工及监测等过程进行了阐述。The article takes the system of seven-span continuous semi-floating combined cable-stayed bridge as a case.The main span of this bridge is 580 m.Its beam is the flat streamlined steel box one.There are totally 168 stayed cables,which are anchored to the beam by pin hinges,and the cables have been tensioned at the single end of the pylon.It is necessary to replace this cable because of its damaged PE cable found in the operation in order to assure its safe service performance.The article sets forth the construction and monitoring processes of cable replacing for this bridge.

关 键 词：斜拉桥 单根换索 施工 监控 材料 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]