跨海钢-混结合梁斜拉桥架设技术经济方案研究  

Study on the Technical and Economic Scheme for the Erection of Cross Sea Steel-Concrete Composite Girder Cable-Stayed Bridge

作　　者：罗超[1] LUO Chao(China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《铁道建筑技术》2023年第11期161-163,共3页Railway Construction Technology

基　　金：中国铁建股份有限公司科技研发计划项目(2018-B04)。

摘　　要：跨海区段的钢-混结合梁斜拉桥主跨一般设置在通航区域,该区域船只密集、船舶吨位大,且施工条件复杂,控制因素多,因此,斜拉桥梁部的架设方案是桥梁施工的重点及难点。以新建福州至厦门铁路安海湾特大桥主桥(40+135+300+135+40)m双塔双索面结合梁斜拉桥钢-混结合梁的架设方案为例,分析在跨海区域,特别是海湾及浅滩区域进行结合梁架设需考虑的诸多因素,并对浮吊船整节梁段提升架设、分节段顶推施工两种施工方案进行技术经济比选,拟定最适宜方案,可为类似工程提供借鉴。The main bridge of steel-concrete composite girder cable-stayed bridges crossing the sea is generally located in the navigation area,where there are dense ships,large tonnage ships,and complex construction conditions with many control factors,therefore,the erection plan of the cable-stayed bridge section is the key and difficult point of bridge construction.This article takes the main bridge of the newly built Fuzhou-Xiamen High-speed Railway Anhaiwan Grand Bridge(40+135+300+135+40)m double tower and double cable plane composite girder cable-stayed bridge as an example,analyzes the many factors that need to be considered in the installation of combined beams in cross sea areas,especially in bays and shoals,and compares the technical and economic aspects of two construction schemes,including lifting and erecting the entire beam section of the floating crane ship and launching the construction in sections,to develop the optimal scheme,which can provide reference for similar projects.

关 键 词：斜拉桥 节段 钢-混结合梁 顶推 吊装 技术经济 

分 类 号：U445.46[建筑科学—桥梁与隧道工程]