某大型房建基坑工程对邻近高铁路基影响研究

随着高铁延伸至越来越多的城市,市区内空间紧缺,各类房建基坑工程将不可避免地对运营高铁产生影响.运营高速铁路多采用无砟轨道,而无砟轨道通过调整扣件应对变形的能力十分有限.如何通过合理有效的基坑支护形式,控制邻近基坑对运营高铁路基的影响,成为高铁工程建设需要解决的重要问题.以某邻近高速铁路的大型房建基坑工程为背景,利用FL...

Research on the Influence of a Large-scale Building Foundation Pit on the Adjacent High-speed Railway Subgrade

As high speed railway extend to more and more cities and spaces in the urban area become more dense,various foundation pit projects closed to operating high speed railway lines will inevitably have more impacts.Due to the settlement of the urban area,the post-construction settlement of natural foundation,foundation deformation usually occurred after the completion of railway track.Since the ability of ballastless track to cope with deformations by adjusting fasteners is limited,the way to apply a reasonable and effective form of foundation pit supports to control impacts of foundation pits on adjacent high speed railway is an important issue during the construction.This paper applied numerical analysis software to establish a 3 D model,and analyzed the plan of supports based on a foundation pit of a large-scale house project which was closed to a high speed railway.Considerations of the track status and impacts of the new construction were completed to verify the safety and effectiveness of the scheme.The method applied in the paper could be used as a reference for similar projects.