摘要
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 buffed pipelines crossing the active fault is serious during an earthquake. There are generally many uncertainties in the earthquakes and the pipe -soil interaction systems, which make the seismic responses of buffed pipelines significantly complicated during the movement of active fault. In this paper, the analysis model of pipe - soil system is constructed on the basis of the finite element theory and numerical simulation method, and the seismic responses of pipelines are analyzed considering the nonlinear contact problem. Some influential factors on the response of buffed pipelines were studied, including the displacement of active fault, the angle between pipeline and fault, the form of fault movement, the buried depth, the initial axial force, the width of the lap, the material of soil around the pipeline and the diameter of pipeline. Based on the results of analysis, some conclusions about the seismic responses of pipelines are drawn.
出处
《地震工程与工程振动》
CSCD
北大核心
2006年第3期186-192,共7页
Earthquake Engineering and Engineering Dynamics
基金
中国地震局"十五"攻关项目资助课题
关键词
断层
埋地管线
地震反应
数值模拟
fault
buried pipeline
seismic response
numerical simulation
