雨水泵站异形深基坑开挖对铁路路基的影响分析

在城市现代化进程中，铁路周边地块不断得到开发和利用，如离铁路较近，构筑物的基坑开挖会对铁路路基产生一定的影响。此文以距铁路较近的北京夕照寺雨水泵站基坑开挖为例，通过模拟，建立有限元模型，利用国际上通用的ABAQUS有限元软件，计算和分析雨水泵站基坑开挖和防护桩施工引起的土体扰动对铁路路基产生的沉降和位移影响。经过计算与分析表明，雨水泵站基坑开挖采用防护桩措施后，施工引起的土体扰动对路基的影响较小，采取的防护桩措施能满足铁路安全运营的要求。

Analysis of the Impact of Rainwater Pumping Station Special -shaped Deep Foundation Pit Excavation on Railway Subgrade

In the process of urban modernization, land surrounding railway are constantly developed and utilized. If they are near railways, excavation foundation pit will cause certain influence on railway subgrade. Taking Xizhao temple station in Beijing as an example, through the simulation and establishment of the finite element model, using the international general finite element software ABAQUS, the calculation and analysis of rainwater pump station foundation pit excavation and protection caused soil disturbance＇ s impact on settlement and displacement of the railway subgrade. Calculation and analysis results show that after using protective measures of pile in the rainwater pumping station excavation , soil disturbance caused by the construction＇ s impact on subgrade is small, the protective measures of pile can meet the requirements of rail safety operation.