某快速路上跨既有铁路立交桥工程方案比选  

Comparison and Selection of Engineering Scheme of an Expressway over an Existing Railway Overpass

作　　者：宋志慧[1] 李鑫 SONG Zhi-hui;LI Xin(Shanxi Electric Power Technical College,Taiyuan,Shanxi,030021,China;China Railway 12th Bureau Group Construction and Installation Engineering Co.,Ltd.,Taiyuan,Shanxi,030024,China)

机构地区：[1]山西电力职业技术学院,山西太原030021 [2]中铁十二局集团建筑安装工程有限公司,山西太原030024

出　　处：《建材技术与应用》2023年第1期54-57,共4页Research and Application of Building Materials

摘　　要：以某快速路上跨铁路立交桥工程为背景,对该工程设计了施工方案,分别为45 m简支组合小箱梁方案、50 m钢混结合梁以及2-65 mT构转体方案,并对其进行了详细介绍和比选,最终选用45 m简支组合小箱梁方案。该方案既可保证既有铁路的安全,又满足上跨铁路桥的结构合理、施工便捷和运营期安全等要求。Taking the cross-railway overpass project on an express road as the background, the construction scheme of the project is designed, which are respectively 45 m simple supported combination small box girder scheme,50 m steel mixed beam and 2-65 m T structure rotating scheme. These three schemes are introduced and compared in detail,finally choose 45 m simple supported combination small box girder scheme.This scheme can not only ensure the safety of the existing railway, but also meet the requirements of reasonable structure,convenient construction and safe operation period of the overspan railway bridge.

关 键 词：上跨铁路立交桥 简支组合小箱梁 既有铁路工程 方案比选 计算分析 

分 类 号：U443[建筑科学—桥梁与隧道工程]