京沈上转秦沈上行线特大桥临近既有线基础防护施工技术

本文以京沈上转秦沈上行线大桥工程为实例,详尽地论述了临近营业线桥梁基础施工采用四面钢板桩防护及钻孔桩防护施工的方法、施工工艺流程、施工操作要点及保证既有线安全和减少对既线影响等内容,达到“保证既有营业线能力”和“施工为运输服务”的目的,实现安全无事故、质量达到设计标准,节点工期内完成施工任务的理想效果。

Construction Technology for the Foundation Protection of Beijing-Shenyang to Qinhuangdao-Shenyang Upline Extra Large Bridge Close to the Existing Line

This article takes the Beijing-Shenyang to Qinhuangdao-Shenyang upline bridge project as an example to discuss in detail the construction method,construction process,construction operation points of the four-sided steel sheet pile protection and bored pile protection construction for the bridge construction near the existing line to ensure the safety of the existing line,reduce the impact on the existing line,achieve the purpose of"guaranteeing the capacity of the existing line"and"construction for transportation services",achieve safety and accident-free,ensure the quality meeting the design standards,and achieve the ideal effect of completing the construction tasks during the construction period.