基坑施工对邻近既有道路路基变形规律分析

Analysis on the deformation law of adjacent existing road subgrades caused by foundation pit construction

基坑开挖对邻近既有道路路基变形势必会造成影响,而确定在基坑开挖过程中基坑的开挖层厚及开挖深度、基坑支护方式、基坑边缘与路基的距离等因素对道路路基变形分别有多大影响,对邻近既有道路的基坑设计和施工有较大实际意义。基于有限元计算结果,并依托实际项目全寿命周期的跟踪数据,分析得出基坑开挖对邻近既有道路路基变形规律,为城市开发过程中,道路两侧地块开发中基坑设计与施工提供案例和数据参考。

The excavation of foundation pits will inevitably have an impact on the deformation of adjacent existing road embankments.However,determining the thickness and depth of the excavation layer,the support method of the foundation pit,and the distance between the edge of the foundation pit and the roadbed during the excavation process has significant practical significance for the design and construction of adjacent existing road embankments.This article is based on finite element calculation results and tracking data throughout the entire life cycle of actual projects to analyze the deformation law of adjacent existing road subgrades caused by excavation of foundation pits.It provides case studies and data references for the design and construction of foundation pits in the development of land plots on both sides of the road during urban development.