铁路简支槽形梁系杆拱组合桥设计研究  

Research on Design of Railway Tied Arch Hybrid Bridge with Simply Supported Trough Girder

作　　者：王法武[1] WANG Fawu(China Railway Shanghai Design Institute Group Co. Ltd.,Shanghai 200070,China)

机构地区：[1]中铁上海设计院集团有限公司

出　　处：《铁道建筑》2019年第9期1-4,8,共5页Railway Engineering

基　　金：中国铁路总公司科技研究开发计划(2013G001-C)

摘　　要：宁启线上跨沪通铁路,由于线路纵断面高程受限而采用了64 m简支槽形梁系杆拱桥。本文分析该桥的受力特点,介绍系梁、拱肋、拱脚、横撑、吊杆等构件的构造设计。采用有限元软件对桥梁进行结构整体计算、道床板横向计算和拱脚局部应力分析。计算结果表明,简支槽形梁系杆拱桥具有建筑高度低、结构刚度大、工后徐变小等优点,在跨度大、净空受限时是一种新的解决方案。Due to the limited elevation of railway vertical section,the 64 m simply supported trough girder tied arch bridge was adopted on Nanjing-Qidong railway over Shanghai-Nantong railway. The stress characteristics of simply supported trough girder tied arch bridge were analyzed,and the structural design of tied girder,arch rib,arch foot, cross brace,suspender and other components were introduced . The finite element software was used to calculate the whole bridge,the transverse calculation of the ballast slab and the local stress analysis of the arch foot. The results show that the simply supported trough girder tied arch bridge has the advantages of low building height,large structural stiffness and small creep after construction. It is a new solution for large span and limited clearance.

关 键 词：铁路桥梁 槽形梁 系杆拱 构造设计 受力分析 低建筑高度 

分 类 号：U448.217[建筑科学—桥梁与隧道工程] U442[交通运输工程—道路与铁道工程]