A Study on the Nonlinear Behavior of Crossing-Fault Buried Pipelines Using Pushover Analysis
American Journal of Civil Engineering
Volume 2, Issue 6, November 2014, Pages: 152-157
Received: Dec. 16, 2014; Accepted: Dec. 28, 2014; Published: Jan. 12, 2015
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Authors
Mahdi Shadab Far, Department of Civil and Transportation Engineering, Hohai University, Nanjing, China
Nemat Hassani, Department of Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran
Reza Rasti, Department of Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran
Seyed J. Faraji, Department of Landscape Architecture, Nanjing Forestry University, Nanjing, China
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Abstract
Earthquakes can cause a lot of damages to buried pipelines. When pipelines are placed in a seismically active area, in addition to safety, performance, and environmental criteria, ground displacement hazards such as fault movements should be considered carefully. Therefore, the present study was aimed to evaluate the response of buried pipelines crossing ground deformation especially faulting based on nonlinear approaches. Considering the pipe as SHELL Element, soil as SOLID Element, and also non-linearity of material and geometry, several caseloads of buried pipelines crossing fault were modeled in the ABAQUS software. Then, all the models were analyzed in both tensile and compressive modes by Push-over analysis method. As a result, besides extracting the relationship between flexural moment and bending angle, the average of obtained curves were normalized and the standard five-line behavior curves were fitted to them. The developed curves can be simply used in any simplified modeling applications for assigning the plastic hinges to different types of pipelines.
Keywords
Buried Steel Pipelines, Pipe-Soil Interaction, SHELL Element, Pushover Analysis, Nonlinear Behavior Curves, Plastic Hinges
To cite this article
Mahdi Shadab Far, Nemat Hassani, Reza Rasti, Seyed J. Faraji, A Study on the Nonlinear Behavior of Crossing-Fault Buried Pipelines Using Pushover Analysis, American Journal of Civil Engineering. Vol. 2, No. 6, 2014, pp. 152-157. doi: 10.11648/j.ajce.20140206.12
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