市域(郊)铁路常用跨度钢混结合梁设计研究  

Design and Research on Common-span Steel-concrete Composite Girders for Suburban Railways

作　　者：柯朝辉[1] KE Zhaohui(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,武汉430063

出　　处：《铁道工程学报》2024年第12期78-82,共5页Journal of Railway Engineering Society

基　　金：国家铁路局通用图编制(2022BZ09);中铁第四勘察设计院集团有限公司科技研发项目(T003303YTBLZ)。

摘　　要：研究目的:由于市域铁路建设主体的多样性和城市间规划、经济、环境等诸多差异性,为推进市域(郊)铁路建设发展,需要编制市域(郊)铁路常用跨度通用图用来指导和统一全国市域(郊)铁路常用类型桥梁的设计,提高社会整体效率。结合前期研究成果,对钢混结合梁常用截面形式进行分析研究,确定市域(郊)铁路常用跨度钢混结合梁的结构构造及截面尺寸,据此编制市域(郊)铁路常用跨度钢混结合梁标准图。研究结论:(1)市域(郊)铁路常用跨度钢混结合梁截面形式推荐采用双工形和单箱形;(2)计算结果表明,市域(郊)铁路常用跨度双工形和单箱形钢混结合梁结构的强度、刚度及动力性能均满足规范要求;(3)市域(郊)铁路常用跨度双工形和单箱形钢混结合梁的用钢量较省,经济性较好;(4)本研究成果可用于指导市域(郊)铁路钢混结合梁结构设计。Research purposes:Due to the diversity of the main body of urban railway construction and the many differences in urban planning,economy,environment and so on,to promote the development of suburban railway construction,it is necessary to prepare a common span map for suburban railways to guide and unify the design of commonly used types of bridges for urban suburban railways nationwide,and improve the overall efficiency of society.Based on the scientific research results,this paper analyzes and studies the common section forms of steel-concrete composite girders,and determines the structural construction and section dimensions of the common-span steelconcrete composite girders for suburban railways,the standard drawings of the common-span steel-concrete composite girders for suburban railways are drawn up accordingly.Research conclusions:(1)The common section forms of steel-concrete composite girders for suburban railways are recommended to use twin-I shapes and single-box shapes.(2)The results show that the strength,stiffness,and dynamic performance of the twin-I and single-box steel-concrete composite girders with a common span for suburban railways meet regulatory requirements.(3)The common-span twin-I shaped and single box-shaped steel-concrete composite girders for suburban railways have lower steel consumption and better economic efficiency.(4)The research results can be used to guide the structural design of steel-concrete composite girders for suburban railways.

关 键 词：市域(郊)铁路 钢混结合梁 双工形 单箱形 动力性能 经济性 

分 类 号：U455[建筑科学—桥梁与隧道工程]