既有线上新建跨线站房接触网过渡施工技术

布吉客运站是在既有广深线布吉站基础上通过新建跨线高架站房,改造为具备接发能力的客运站.由于广深铁路在布吉站为四线并行,线路线间距小,新建高架站房位于既有接触网上方,因此需对既有硬横跨悬挂接触网进行过渡改造.提出了先设立线间H钢柱,再拆除既有硬横跨,最后恢复与雨棚柱合架的过渡方案.对接触网过渡施工步骤和关键技术及相关的协调配合进行了介绍和总结,对既有车站接触网过渡改造有一定的指导意义.

Transition Construction Technologies of Overhead Contact Line on Existing Railway Elevated Building

Buji Railway Station is a passenger station transformed from the Buji Station on Guangzhou-Shenzhen railway by elevated station on existing railway. Due to the narrow spacing between four parallel lines in Buji Station on Guangzhou- Shenzhen Railway, and new elevated station built above the overhead contact line, transition is needed for the existing rail- way. The paper proposes the transition plan of the establishment of steel column between two railways, then removal of hard horizontal beam, and the final resumption of overhead contact line. It introduces and summarizes the catenary transition construction steps and key technologies as well as the related coordination; the existing station contact network transition transformation can be referred to similar projects.