摘要
本文利用虚功原理,建立了场地土液化引起的地下管道的上浮反应分析模型,用弹性地基梁来模拟地下管道,并考虑了土的非线性约束作用、管道的初始变形、液化区长度、管道的初始轴力等的影响。采用非线性增量有限元法,对场地土液化引起的地下管道的上浮反应进行了研究,给出了部分计算结果。
On the basis of virtual work principle, in this paper, the formulae are deduced for the floatation response of buried pipeline due to principle soil liquefaction. A beam model based on the theory of beam on elastic foundation is applied for the pipeline buried in non-liquefied and liquefied area, considering the effects of nonlinear soil constraint and the initial deformation, the length of liquefied area, and the axial force acting on the pipeline.The study of floatation response of buried pipeline is conducted by using the nonlinear increment element method. Some conclusions are drawn.
出处
《地震工程与工程振动》
CSCD
北大核心
2004年第3期120-123,共4页
Earthquake Engineering and Engineering Dynamics
基金
中国地震局"十五"重点攻关项目.
关键词
场地土液化
地下管道
上浮反应
soil liquefaction
buried pipeline
floatation response
