Polyethylene (PE) pipes are widely used in natural gas transportation systems in urban areas nowadays. As landslide caused by earthquake would cause destructive damage to buried pipes, increasing attention is attracted to the safety of buried PE pipes under seismic load. In this paper, the deformation behavior of PE pipe subjected to seismic landslide was investigated and a related failure criterion due to yielding was proposed. Based on extensive uniaxial tensile tests, a rate-dependent constitutive model of PE was applied to simulate the mechanical behavior of PE pipes. The extended Drucker-Prager model was used for surrounding soil. In our proposed finite element model, a quartic polynomial bending deflection displacement normal to the pipeline was loaded along the axial direction of PE pipe. The numerical simulation results revealed that the main failure mode of buried PE pipe subjected to seismic landslide shifted from bending deformation to ovalization deformation with increasing bending deflection. On the basis of deformation behavior analysis, failure criterion curves were put forward, which depicts the maximum relative deflection of the pipe cross-section, and the maximum displacement of the pipe versus pipe length subjected to seismic landslide. The results may be referable for design and safety assessment of PE pipes due to seismic landslide.
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Zhejiang University,
Hangzhou 310027,
e-mail: xiangpeng.luo@gmail.com
Zhejiang University,
Hangzhou 310027,
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June 2014
Research-Article
Finite Element Analysis of Buried Polyethylene Pipe Subjected to Seismic Landslide
Xiangpeng Luo,
Zhejiang University,
Hangzhou 310027,
e-mail: xiangpeng.luo@gmail.com
Xiangpeng Luo
Institute of Process Equipment
,Zhejiang University,
Hangzhou 310027,
China
e-mail: xiangpeng.luo@gmail.com
Search for other works by this author on:
Jianfeng Shi
Zhejiang University,
Hangzhou 310027,
Jianfeng Shi
1
Institute of Process Equipment
,Zhejiang University,
Hangzhou 310027,
China
;State Key Laboratory of Chemical Engineering,
Institute of Polymer
and Polymerization Engineering,
Department of Chemical
and Biological Engineering,
Zhejiang University,
Hangzhou 310027, China
e-mail: shijianfeng@zju.edu.cn
Institute of Polymer
and Polymerization Engineering,
Department of Chemical
and Biological Engineering,
Zhejiang University,
Hangzhou 310027, China
e-mail: shijianfeng@zju.edu.cn
1Corresponding author.
Search for other works by this author on:
Xiangpeng Luo
Institute of Process Equipment
,Zhejiang University,
Hangzhou 310027,
China
e-mail: xiangpeng.luo@gmail.com
Jinjin Ma
Jinyang Zheng
Jianfeng Shi
Institute of Process Equipment
,Zhejiang University,
Hangzhou 310027,
China
;State Key Laboratory of Chemical Engineering,
Institute of Polymer
and Polymerization Engineering,
Department of Chemical
and Biological Engineering,
Zhejiang University,
Hangzhou 310027, China
e-mail: shijianfeng@zju.edu.cn
Institute of Polymer
and Polymerization Engineering,
Department of Chemical
and Biological Engineering,
Zhejiang University,
Hangzhou 310027, China
e-mail: shijianfeng@zju.edu.cn
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received May 10, 2013; final manuscript received November 25, 2013; published online February 14, 2014. Assoc. Editor: Spyros A. Karamanos.
J. Pressure Vessel Technol. Jun 2014, 136(3): 031801 (8 pages)
Published Online: February 14, 2014
Article history
Received:
May 10, 2013
Revision Received:
November 25, 2013
Citation
Luo, X., Ma, J., Zheng, J., and Shi, J. (February 14, 2014). "Finite Element Analysis of Buried Polyethylene Pipe Subjected to Seismic Landslide." ASME. J. Pressure Vessel Technol. June 2014; 136(3): 031801. https://doi.org/10.1115/1.4026148
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