中文摘要：

采用MIDAS GTS软件建立了三维有限元模型，分析开挖深度、桩径、桩心距、管线与桩的距离、管线埋深、土体弹性模量等因素对地埋管线的影响.结果表明：管线水平和竖向位移在基坑角点处约为基坑中部的1/2；管线埋深在基坑深度1/3位置时，水平位移最大，而竖向位移随埋深的增大而减小；当桩径由0.6m增大到1.2m时，水平位移变化较小，管线中央竖向位移则减少为原来的1/2；土体弹性模量增大时，管线中间位移明显减小，水平位移约为竖向位移的4倍.

英文摘要：

MIDAS GTS software was used to build a 3D finite element model to analyze the influences of such factors as excavation depth, pile diameter, pile spacing, pipeline-to-pile distance, pipeline buried depth and soil elastic modulus on buried pipelines. It is found that the horizontal and vertical displacements of pipelines at the corner of the foundation pit are about 1/2 of those at its center. The maximum horizontal displacement happens when the pipeline buried depth is 1/3 of the foundation pit, and the vertical displace-ment decreases with increasing pipeline buried depth. When the pipeline diameter increases from 0.6 m to 1.2 m, the horizontal displacement changes little, but the vertical displacement decreases to half of the original. As the soil elastic modulus increases, the medium displacement of pipelines decreases obviously, and the horizontal displacement is about 4 times as large as the vertical displacement.