以有限元方法分析隧道开挖对地埋管线的影响,并分别以梁单元、壳单元、实体单元对管线进行模拟,从受力变形方面研究管线单元类型对分析结果的影响。研究结果认为:对于管土刚度比较大的材料,如混凝土、铸铁及钢质管线,采用梁单元计算管线响应是能够满足精度要求的,对于管土刚度比较小的材料,如PVC及ABS材质管线,当管线壁厚较大时,采用梁单元计算所得内力也可满足精度要求,而当管线壁厚较小时,采用梁单元计算结果误差较大。 The finite element method is used to analyze the influence of tunnel excavation on the buried pipeline. The pipeline is simulated with beam element, shell element and solid element respectively. The effect of pipeline element type on the analysis result is studied from the stress and deformation. The results show that for pipe materials with high soil-pipe stiffness, such as concrete, cast iron and steel pipelines, the calculation of pipeline response using beam elements is able to meet the accuracy requirements. For pipe materials with smaller pipe-soil stiffness, such as PVC and ABS pipelines When the pipe wall thickness is large, the internal force calculated by the beam element can also meet the accuracy requirements. However, when the pipe wall thickness is small, the error of the beam element calculation result is larger.