Mechanical behaviors and failure mechanisms of buried polyethylene pipes crossing active strike-slip faults

被引:37
作者
Zhang, Jie [1 ]
Xiao, Yao [1 ]
Liang, Zheng [1 ]
机构
[1] Southwest Petr Univ, Sch Mechatron Engn, Chengdu 610500, Sichuan, Peoples R China
关键词
Polyethylene pipe; Strike-slip fault; Numerical simulation; Mechanical behavior; Failure analysis; PIPELINE;
D O I
10.1016/j.compositesb.2018.09.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Polyethylene (PE) pipes are widely used in gas transmission projects due to their excellent performances. Earthquake is destructive and difficult to predicted, which is one of the major disasters caused PE pipe failure. The study was conducted on the mechanical behaviors and failure mechanisms of buried PE pipes under fault movement, and the effects of gas pressure, fault dislocation, soil and pipe size on the mechanical behavior of PE pipes were discussed. The study indicates that gas pressure has a less effect on the mechanical behavior of PE pipe. Under faults, the flatness curve of PE pipe is distributed symmetrically with respect to the fault plane. Deformation rules of PE pipe in different stratums are similar, while the pipe deformation is the largest in clay and it is smallest in sand. The greater the standard pipe size, the greater the diameter flatness coefficient is. The larger the diameter, the smaller the pipe diameter flattening parameter is. PE pipes with a larger standard dimension ratio of a fitting (SDR) and a smaller diameter are prone to failure in fault zone. The results can provide a basis for gas pipe design, laying, testing, and evaluation.
引用
收藏
页码:449 / 466
页数:18
相关论文
共 28 条
  • [21] Yang H, 2015, HANGHAI GAS, V02
  • [22] Younan MYA, 2005, J PRESSURE VESSEL TE, V1, P850
  • [23] Polymeric nanocomposite materials: Preparation and characterization of star-shaped PbS nanocrystals and their influence on the thermal stability of acrylonitrile-butadiene-styrene (ABS) copolymer
    Yousefi, Mohammad
    Gholamian, Forozan
    Ghanbari, Davood
    Salavati-Niasari, Masoud
    [J]. POLYHEDRON, 2011, 30 (06) : 1055 - 1060
  • [24] Mechanical response analysis of the buried pipeline due to adjacent foundation pit excavation
    Zhang, Jie
    Xie, Rui
    Zhang, Han
    [J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2018, 78 : 135 - 145
  • [25] Investigation of Static and Dynamic Seal Performances of a Rubber O-Ring
    Zhang, Jie
    Xie, Jingxuan
    [J]. JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 2018, 140 (04):
  • [26] Buckling failure of a buried pipeline subjected to ground explosions
    Zhang, Jie
    Zhang, Lan
    Liang, Zheng
    [J]. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2018, 114 : 36 - 47
  • [27] Zhou X., 2017, ENVIRON, V137, P36
  • [28] [周小平 ZHOU Xiaoping], 2008, [岩石力学与工程学报, Chinese Journal of Rock Mechanics and Engineering], V27, P117