中文摘要：

以Winkler弹性地基梁理论为基础,针对地铁开挖过程中地下管线的受力作用和变形作用进行分析,并在考虑地基扩散作用影响下构建地下管线挠度位移、转角、弯矩和剪力的表达式,定量分析地基扩散角与埋深对地下管线变形的影响.经理论分析证明：地下管线最大挠度出现在沉陷区域中间,沉陷区两端边缘处集中了最大弯矩和剪力,地基扩散角与管线的埋置深度均对管线最大挠度有重要影响.

英文摘要：

Based on the Winkler elastic theory, the force and deformation of underground pipeline in the process of subway tunneling is analyzed and the expressions of deflection of underground pipeline, its turning angle, bending moment, and shearing force are established when the spreading of the groundwork is taken into account. The influence of groundwork spreading and buried depth of pipeline on its deformation is analyzed quantitatively, also. It is verified by theoretical analysis that the maximum settlement of the underground pipeline is located at the middle of the settlement area, the maximum bending moment and maximum shearing force of the underground pipeline are located on the edge of the settlement area. Therefore, the influence of spreading angle and buried depth of the underground pipeline will have a significant influence on the maximum deflection of the pipeline.