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埋地管道在落石冲击作用下的数值模拟
引用本文:丁凤凤,石豫川,冯文凯. 埋地管道在落石冲击作用下的数值模拟[J]. 山西建筑, 2009, 35(30): 87-88
作者姓名:丁凤凤  石豫川  冯文凯
作者单位:成都理工大学,四川成都,610059
摘    要:采用刚体离散单元法进行数值模拟,对落石垂直冲击管道正上方时的管道受力特性进行了分析,得出在冲击荷载作用下土体竖向应力在管道表面集中且向两侧速减,同时管体形变为不规则的椭圆体,以及冲击过程是瞬间过程的结论,并得出可以通过加大管道埋深的办法来保护管道。

关 键 词:管道  落石冲击  离散元模拟

Numerical simulation of buried pipeline under rock-fall impact
DING Feng-feng,SHI Yu-chuan,FENG Wen-kai. Numerical simulation of buried pipeline under rock-fall impact[J]. Shanxi Architecture, 2009, 35(30): 87-88
Authors:DING Feng-feng  SHI Yu-chuan  FENG Wen-kai
Affiliation:DING Feng-feng,SHI Yu-chuan, FENG Wen-kai
Abstract:Adopting rigid discrete element method of numerical simulation, we have analyzed the stress characteristics of the pipe when the rock-fall impacts the pipe vertically. It concluded the vertical stress in soil caused by impaction lode has a stress concentration region near the surface of pipe and has a faster attenuation from the irnpaction center to sidepiece, while pipeline becomes the deformed elliptical shape. Impaction is an instant process. It realizes that pipeline can be protected by increasing the buried deep.
Keywords:pipeline  rock-fall impaction  discrete element method simulation
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