石济客运专线并行京沪高速铁路线间距研究

Study on Distance Between Shijiazhuang-Jinan Passenger Dedicated Line and Beijing-Shanghai High-speed Railway in Parallel Section

石济客运专线德州至齐河段并行已开通运营的京沪高速铁路,线路长约63 km。为确保石济客运专线建设期间京沪高速铁路运营安全,同时又尽可能地减少两线间夹心地与拆迁,需要研究确定石济客运专线与京沪高速铁路并行最小线间距。通过从石济客运专线的修建,造成京沪高速铁路沉降影响与线间距的关系及施工期间大型机械安全作业距离要求,进行了详细的分析和论证,给出了石济客运专线与京沪高速铁路采用桥梁与路基不同工程形式对应时线间距的合理取值。在石济客运专线对京沪高速铁路分别采用桥梁对桥梁、桥梁对路基、路基对桥梁、路基对路基情况下最小线间距分别为25 m、30 m、40 m、40 m。文中石济客运专线并行京沪高速铁路线间距研究的内容、方法及建议对类似工况项目具有一定的参考与借鉴作用。

Dezhou-Qihe section of Shijiazhuang-Ji＆#39;nan passenger dedicated line parallel to Beijing-Shanghai high-speed railway in operation is 63 km long.In order to ensure operation safety of Beijing-Shanghai high-speed railway during the construction of Shijiazhuang-Ji＆#39;nan passenger dedicated line and reduce the sandwiched land and removal between two railway lines as much as possible,it is necessary to determine the minimum distance between two high-speed railway lines in parallel section.Based on the analysis of the relation between settlement influence of construction of Shiji-azhuang-Ji＆#39;nan railway on Beijing-Shanghai high-speed railway and line spacing and the safety operation distance of large-scale machinery during the construction,this paper proposes the corresponding reasonable value of distance be-tween Shijiazhuang-Ji＆#39;nan and Beijing-Shanghai high-speed rail lines for different work type of subgrade and bridge in parallel section.The minimum values of the distance between Shijiazhuang-Ji＆#39;nan line and Beijing-Shanghai line are 25 m,30 m,40 m and 40 m respectively for the section of bridge-bridge,bridge-subgrade,subgrade-bridge and subgrade-subgrade.In this paper,the contents,method and suggestions of study on distance between two parallel lines can pro-vide some references for other similar engineering.