基于大型顶管穿越高速公路的环境影响分析

Analysis of the environmental impact of large pipe jacking crossing super-speed highways

基于大型顶管穿越高速公路高架段周侧环境分布情况,开展了土体及构筑物等环境变形监测。据此对顶管施工引起的周侧土体损失、管道周侧土体变形对高架立柱及地表附近管线的变形影响进行了分析。成果可为软土地基顶管穿越提供经验数据,并为类似工程的设计优化提供相关参数。

Based on the environmental distribution of the circumferential side of the highways with large pipe jacking passing through the them,soil and structure monitoring projects are set up.The loss of the surrounding soil caused by the pipe jacking is analyzed with respect to the measured results.The deformation of nearby soil due to elevated columns and the pipelines is analyzed.The results show that the monitoring data of each project are related to each other.They are in good agreement with the actual working conditions.This paper provides relevant empirical data for pipe jacking in similar soft soil foundations and relevant parameters for the design optimization of similar projects.