On the premise of satisfying all constraint conditions stipulated in the codes with the pipe thickness spacing , height and thickness of stiffener rings as variables and the total steel quantity per meter of pipe as objective function , the program is developed for structural stress computation and comparison of total steel quantity used so as to select the alternative with smallest total steel quantity per meter of pipe 该程序在满足规范规定的各种约束条件下，以管壁厚度、加劲环间距、高度和厚度等作为变量，以每米钢管的总用钢量为目标函数，进行结构应力计算和工程量比较，从中选出用钢量相对最小的设计方案。
The preferences are analyzed , pipe ’ s parameters such as depth , thickness , pipe diameter , and mechanical property of material ; soil parameters such as soil types , internal friction angle , pipe - soil interaction ; fault ’ s parameters such as fault types , fault throw , fault drop , fault - pipe angle , mechanical property of material ; load types such as gravity force , linear displacement load , seismic load and seismic wave . some conclusions are drawn from the calculating results : when buried pipes cross fault , pipe ’ s embedded depth should be shallow , and big pipe diameter and thick wall should be selected . avoid the site where fault moves severe , and select suitable pipe - fault angle 在有限元三维模型建立中考虑的因素有:管道自身参数如管道埋置深度、管壁厚度、管径、管道材料等;岩土材料参数如土体类型、岩土的内摩擦角、管土相互作用等;断层考虑有断层类型,断层断距,断层错动距离,断层与管道的交角,断层材料的考虑等;荷载分别考虑静荷载,动荷载,其中动荷载包括线性位移加载、地震力加载和地震波加载等。
