跨既有铁路斜交式公路拱桥施工方案研究

Study on Construction Scheme of X-type Highway Arch Bridge on Existing Railways

公跨铁立交桥上跨既有铁路线桥梁安装,施工难度大,安全性要求高,时效性要求强,而公路与铁路斜交时难度更大。以某公铁立交桥为背景,系统介绍施工方案比选,无防护棚架防护跨线制梁与安装方案的具体工艺技术和安全措施,方案安全而高效,可为同类工程提供经验参考。

It is difficult to install highway- railway overpass on existing railway lines due to the high requirement in construction, security and timeliness, especially for X-type highway arch bridges. This paper, taking highway- railway overpass as the research object, systematically introduces the comparison and selection of construction schemes and the specific technology and safety measures of installation scheme of beaming across lines without protective scaffolding. It then finds out the secure and efficient scheme, which can provide a reference for the similar engineering.