既有神朔铁路小曲线半径改造桥梁方案研究  

Study on Bridge Scheme of Small Curve Radius Reconstruction of Existing Shenmu-Shuozhou Railway

作　　者：董月龙 温贵生 DONG Yuelong;WEN Guisheng(China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《铁道建筑技术》2023年第7期85-87,99,共4页Railway Construction Technology

基　　金：中铁第五勘察设计院集团有限公司科技研发计划项目(T5Y2021-A01)。

摘　　要：通过对神朔铁路小半径曲线改造工程重点桥梁方案的梳理,对既有铁路改造中桥梁技术进行了研究。在研究既有铁路工程概况、主要技术标准的基础上,探讨了桥涵主要设计原则、并行铁路桥梁间距的选择、既有1-16 m简支T梁及既有1-12 m框架桥改造方案。通过全方面考虑施工、防护、结构等确定了并行铁路桥梁的间距;通过对铁路、公路运营、工程造价、施工用地等的比较分析确定了既有1-16 m简支T梁的改造方案;通过对结构受力、公路运营、交通组织的研究确定了既有1-12 m框架桥的改造方案。Through sorting out the key bridge schemes of Shenmu-Shuozhou Railway small radius curve reconstruction project,the bridge technology in existing railway reconstruction is studied.On the basis of studying the general situation and main technical standards of existing railway projects,the main design principles,the selection of parallel railway bridge spacing,the existing 1-16 m simply supported T-shaped girder reconstruction scheme,and the existing 1-12 m frame bridge reconstruction scheme are discussed.The spacing of parallel railway bridges is determined by considering construction,protection and structure in all aspects;through the comparative analysis of railway,highway operation,project cost and construction land,the reconstruction scheme of existing 1-16 m simply supported T-shaped girder is determined;through the study of structural stress,highway operation and traffic organization,the reconstruction scheme of existing 1-12 m frame bridge is determined.

关 键 词：既有铁路 改造 桥梁 线间距 简支T梁 框架桥 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]