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跨越断层埋地管线在地震中的破坏是非常严重的,地震本身和管土相互作用体系中都存在很多不确定性因素,所以管线在断层运动过程中反应比较复杂。本文利用有限元理论和数值模拟手段,建立了管土作用模型,采用非线性接触问题研究方法详细地分析了管线由断层运动而产生的反应,对影响管线的各种因素进行了分析,包括位错量、跨越角度、断层运动形式、埋设深度、初始轴向力、断层裂缝宽度、填覆土质和管径。通过研究,得到一些初步结论。
The damage of buried pipeline crossing the fault in the earthquake is very serious. There are many uncertainties in the interaction between the earthquake itself and the pipe-soil interaction. Therefore, the response of the pipeline during the fault movement is quite complex. In this paper, the soil-soil interaction model is established by means of finite element method and numerical simulation. The non-linear contact problem method is used to analyze the reaction of the pipeline caused by fault movement in detail. Various factors affecting the pipeline are analyzed, Fault, span, span, fault motion, buried depth, initial axial force, fault fracture width, soil fill and pipe diameter. Through research, we get some preliminary conclusions.