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Volume 37 Issue 2
Apr 2023
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Chinese Journal of High Pressure Physics  > 2023  >  37(2): 024203.
LEI Ming, ZHANG Maochen, QIN Zihao, YANG Min, ZHANG Wei, LU Shiwei. Dynamic Response of Pipeline Subjected to Cylindrical SH Wave[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 024203. doi: 10.11858/gywlxb.20220690
Citation: LEI Ming, ZHANG Maochen, QIN Zihao, YANG Min, ZHANG Wei, LU Shiwei. Dynamic Response of Pipeline Subjected to Cylindrical SH Wave[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 024203. doi: 10.11858/gywlxb.20220690
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Dynamic Response of Pipeline Subjected to Cylindrical SH Wave

doi: 10.11858/gywlxb.20220690
  • 1.

    School of Urban Construction, Yangtze University, Jingzhou 434023, Hubei, China

  • 2.

    Research Center of Underground Oil and Gas Storage, Yangtze University, Jingzhou 434023, Hubei, China

  • Received Date: 09 Nov 2022
  • Rev Recd Date: 21 Dec 2022
  • Accepted Date: 24 Feb 2023
    • Available Online: 13 Apr 2023
  • Issue Publish Date: 05 Apr 2023
    Abstract
  • In the process of underground space development and construction, the blasting seismic wave induced by drilling and blasting is very important to the safety of underground pipeline. When the explosion is close to the pipe, the curvature of the wave front will have a significant impact on the blasting dynamic response of the pipe. In this paper, the wave function expansion method was used to study the dynamic stress concentration of pipelines under the blasting effect of cylindrical SH wave. The distribution law of the dynamic stress concentration factor (DSCF) of concrete pipe and PVC pipe was discussed. Then the effects of the distance from the wave source to the pipe axis r0, the incident frequency of cylindrical SH waves, and the shear modulus ratio η of the pipe and soil layer on the DSCF of the pipe inner wall were also discussed. The results show that the distribution shape of DSCF of the inner wall of the concrete pipe is more sensitive to the frequency of cylindrical SH wave than that of PVC pipe. η is an important index affecting the concentration of dynamic stress in the pipeline. When the incident wave frequency is constant, the maximum DSCF of the pipeline increases with the increase of η. When η is constant, the maximum DSCF decreases with the increase of incident frequency. The distance from the wave source to the pipe axis influences the failure position of the pipeline due to the curvature of the wave front, but it has little effect on the maximum DSCF value.

     

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