首页|Buckling behavior of buried pipe crossing stratum subsidence area
Buckling behavior of buried pipe crossing stratum subsidence area
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier LtdStratum subsidence is one of the important factors threatening the pipe safety. Buckling phenomenon occurs on the pipe crossing subsidence area that may cause leakage accidents. The pipe soil coupling numerical model was established in this paper, buckling behavior of buried pipe crossing stratum area was investigated. The effects of subsidence displacement, radius-thickness ratio, internal pressure, buried depth and stratum on buried pipe's mechanical behavior were discussed. The results show that buckling appears on the pipe when subsidence displacement is large. With the increasing of subsidence displacement, diameter-thickness ratio and buried depth of pipe, the buckling phenomenon becomes more serious. When the internal pressure of pipe increases, the buckling mode changes from concave fold to convex wrinkle gradually, and it is more serious with the increasing of internal pressure. The pipe in rock stratum is more dangerous than that in clay stratum and sand stratum. Those results can be used for the evaluation and maintenance of gas or hydrogen pipes.
Buckling behaviorBuried pipePlastic strainSubsidence area
Zhang J.、Zheng T.、Xie R.、Lu G.、Xu J.Y.
展开 >
Southwest Petroleum University School of Mechatronic Engineering
Sichuan University of Arts and Science School of Intelligent Manufacturing
Shandong Provincial Lunan Geology and Exploration Institute
Institute of Gathering and Transportation Engineering Technology Southwest Oil and Gas Field Company Petrochina
NSTL
Elsevier
