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The mechanical behavior of pipe jacking are of great significance to ensure the safety of pipe jacking construction. In this paper, through the field test data and ABAQUS numerical simulation, the distribution law of the face resistance and the contact pressure around the pipe in the composite stratum is analyzed. The results show that the contact pressure of the pipe in the strongly weathered tuff stratum is relatively uniform, while the contact pressure in the upper soft and lower hard strata is significantly different. The face resistance of the center and bottom areas of the pipe jacking head is generally large, and the face resistance of the fully weathered tuff stratum is higher than that of the mud gravel stratum. This study provides a reference for similar pipe jacking projects in composite strata.

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Numerical Simulation Study on Mechanical Behavior of Large Diameter Reinforced Concrete Pipe Jacking in Composite Strata

  • 会议论文

  • 发表日期：

    2025年

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  • Jianchen Song,
  • Xuebo Song,
  • Feilun Luo,
  • Liang Xiong

摘要

The mechanical behavior of pipe jacking are of great significance to ensure the safety of pipe jacking construction. In this paper, through the field test data and ABAQUS numerical simulation, the distribution law of the face resistance and the contact pressure around the pipe in the composite stratum is analyzed. The results show that the contact pressure of the pipe in the strongly weathered tuff stratum is relatively uniform, while the contact pressure in the upper soft and lower hard strata is significantly different. The face resistance of the center and bottom areas of the pipe jacking head is generally large, and the face resistance of the fully weathered tuff stratum is higher than that of the mud gravel stratum. This study provides a reference for similar pipe jacking projects in composite strata.