顶管群下穿铁路施工对轨道变形影响分析

The influence analysis on pipe jacking group underpass railway construction to track deformation

结合西直湖港顶管群下穿既有京沪铁路工程实例,根据下穿段地基状况,采取了旋喷桩和袖阀管注浆分区加固措施,并介绍了顶管施工参数,对轨道变形进行了动态监测,为顶管施工和铁路轨道几何尺寸调整提供了数据支撑。

Combining with the Xizhi lake port pipe jacking group underpass existing Beijing-Shanghai railway engineering example,according to the foundation situation of underpass section,took the grouting pile and sleeve valve pipe grouting partition reinforcement measures,and introduced the pipe jacking construction parameters,made dynamic monitoring to track deformation,provided data support for pipe jacking construction and railway track geometry size adjustment.