宜宾临港长江大桥总体设计  

Overall Design of Yibin Lingang Yangtze River Bridge

作　　者：王应良[1] 王玉珏[1] 王亮[1] 孙立山[2] 朱敏[1] WANG Yingliang;WANG Yujue;WANG Liang;SUN Lishan;ZHU Min(China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China;China Major Bridge Reconassiance and Design Insititue Co.Ltd,Wuhan,Hubei 430050,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031 [2]中铁大桥勘测设计院集团有限公司,武汉430050

出　　处：《铁道工程学报》2023年第10期73-80,共8页Journal of Railway Engineering Society

摘　　要：研究目的:宜宾临港长江大桥位于宜宾市临港区瞌睡坝附近,是新建川南城际铁路、渝昆高铁、宜宾市规划市政道路的共用过江通道。为节约通道资源、减小拆迁和用地,大桥采用公铁平层布置斜拉桥。本文就宜宾临港长江桥桥位、梁型、设计、施工等方面开展研究。研究结论:(1)跨河桥梁的桥位和跨度受河道、通航、行洪、鱼保等方面因素影响综合确定;(2)在满足功能要求、技术标准的前提下,公铁合建桥梁的结构形式应从技术、经济指标、施工、景观、引道疏解等方面综合比选;(3)公铁合建桥梁各线间,线路与公路的相对位置,以及公铁行车的相互影响是设计应重点关注点;(4)施工方案应结合地形、运输条件、桥梁方案综合确定;(5)本研究成果可应用于铁路大跨斜拉桥及公铁同层桥梁设计。Research purposes:Yibin Lingang Yangtze River Bridge is located near Keshuiba in Lingang District of the Yibin City.It is a shared crossing of the newly-built Chuannan intercity railway,Chongqing-Kunming high-speed railway and Yibin municipal road planning.In order to save channel resources,reduce demolition and land use,the bridge adopts a cable-stayed bridge with road and railway traffic one level.This paper studies the bridge location,beam type,design and construction of the Yibin Lingang Yangtze River Bridge.Research conclusions:(1)The bridge location and span of the river-crossing bridge are comprehensively determined under the influence of river course,navigation,flood flow,fish protection and other factors.(2)On the premise of meeting the functional requirements and technical standards,the structural form of the bridge should be comprehensively compared and selected from the aspects of technology,economic index,construction,landscape,approach dredging,etc.(3)The design should focus on the relative position between railways,between railways and roads,and the interaction between road and railway traffic.(4)The construction scheme should be comprehensively determined in combination with the terrain,transportation conditions and bridge type.(5)The research results can be applied to the design of railway long-span cable-stayed bridge and road-railway on one level bridge.

关 键 词：斜拉桥 公铁两用桥 同层合建 公铁隔离屏障 

分 类 号：U448.121[建筑科学—桥梁与隧道工程] U448.27[交通运输工程—道路与铁道工程]