轨道交通既有线分段插铺交叉渡线施工技术分析

Technical Analysis of Scissors Crossover Insertion Construction for Rail Transit Existing lines

轨道交通既有线插铺交叉渡线施工是一项风险较高的施工。以上海轨道交通1号线莘庄站站前增铺交叉渡线工程为例,对在不停运施工的条件下,采用“分段插铺”施工技术,对插铺交叉渡线施工进行了阐述和研究,并就影响施工精度的诸因素,提出了相应的建议和措施。该案例可为类似改造工程提供参考。

The construction of scissors crossover for existing rail lines is with high-risk.In the insertion construction of scssors crossover in the interval ahead of Xinzhuang Station of Shanghai Railway Line 1,the construction technology of"segmental insertion"is used to construct the crossovers while the rail in operation.With regard to the factors which willinfuence the construction tolerance,the relative suggestions are proposed.The case can be used as a reference for similar renovation projects.