Dynamic response of buried pipelines in randomly structured soil

When the shock wave caused by explosion in geotechnical medium encountered buried pipeline, the buried pipeline may be destroyed. Use the LS-DYNA program to describe the deformation of buried pipelines under explosion ground shock. The results indicate that the process of the stress on pipe is instantaneous, and the back of buried pipelines against explosion center suffers greater instantaneous pulling stress in axis direction. The stress on the pipes, which is brought by the weaponary explosion, is involved with the distance between the pipe and explosion center and the diameter of pipe, among which the former involves greater. And the smaller pipe would get greater shock.

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Dynamic Response and Reliability Analysis of Buried Steel Pipes Under Blast Load

10.3233/atde210222 ◽

2021 ◽

Author(s):

Shengwu Tu ◽

Dongwang Zhong ◽

Linna Li ◽

Xiangchao Gong ◽

Kuan Zhu

Keyword(s):

Dynamic Response ◽

Reliability Analysis ◽

Quantitative Risk Assessment ◽

Response Model ◽

Buried Pipelines ◽

Experimental Conditions ◽

Steel Pipes ◽

Operation Analysis ◽

Load Factors ◽

Pressurized Pipelines

Comprehensively considering the influence of multiple load factors involved in the stress of buried pipelines, the dynamic response model and failure function of buried pressurized pipelines under explosive loads are established, and the formula for calculating the stresses of buried pressurized pipelines is proposed. Design and carry out dynamic response model experiment of buried steel pipe under explosive load, and extract relevant model parameters according to experimental data. For the buried pressurized steel pipes under extreme experimental conditions, the reliability analysis was carried out by Monte Carlo method, and the limit proportional distance of pipeline failure under experimental conditions was obtained. To determine the degree of influence of various parameter changes on the reliability of buried steel pipes. The research results can provide a certain reference for the quantitative risk assessment and safe operation analysis of the adjacent buried pipelines in blasting construction.

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An innovative solution for the dynamic response of buried pipelines in layered transversely isotropic soil under pavement structures

Computers and Geotechnics ◽

10.1016/j.compgeo.2021.104602 ◽

2022 ◽

Vol 143 ◽

pp. 104602

Author(s):

Linqing Yang ◽

Zejun Han ◽

Chengchao Guo ◽

Dingfeng Cao ◽

Pengpeng Ni ◽

...

Keyword(s):

Dynamic Response ◽

Transversely Isotropic ◽

Buried Pipelines ◽

Innovative Solution ◽

Pavement Structures

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On the dynamic response of fluid-filled buried pipelines

Journal of Sound and Vibration ◽

10.1016/0022-460x(87)90435-4 ◽

1987 ◽

Vol 117 (1) ◽

pp. 59-67 ◽

Cited By ~ 7

Author(s):

B.K. Mishra ◽

P.C. Upadhyay

Keyword(s):

Dynamic Response ◽

Buried Pipelines

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Gurtin-Type Quasi-Variational Principle of Buried Pipelines Dynamics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.838-841.1581 ◽

2013 ◽

Vol 838-841 ◽

pp. 1581-1584

Author(s):

Shao Chu Feng ◽

Xue Dong Chen

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Variational Principle ◽

Dynamic Response ◽

Integral Method ◽

Theoretical Foundation ◽

Severe Damage ◽

Buried Pipelines ◽

Variational Integral ◽

Dynamics Problems

Because earthquakes may cause severe damage to buried pipelines, it is important to study dynamic response of buried pipelines. For dynamic response problem of buried pipelines, variational method is the suitable method. In the paper, Gurtin-type quasi-variational principle of buried pipelines dynamics is established by convolutional variational integral method, which is theoretical foundation of finite element method for solving buried pipelines dynamics problems.

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