The thrust force is a crucial parameter in the construction of pipe-jacking projects,the design of reaction walls,and the selection of pipe-jacking machinery.This study draws on the pipe-curtain section of the Sanya River Mouth Channel project and employs the Persson contact model to investigate the thrust force associated with the three-circular-ring interlocking pipe-jacking,considering the influence of soil-pipe contact on the thrust force calculation formula.Additionally,the study examines the correlation between the thrust force and the extent of pipe interlocking.The findings are further validated through a comparison with actual on-site measurement data.The study reveals that the combined contact pressure for the three-circular-ring interlocking pipe-jacking varies from 1.34 G to 4.04 G,depending on the level of interlocking.For the Sanya River Mouth Channel project,the estimated thrust force necessary for the three-circular-ring interlocking pipe-jacking is between 7 416.6 kN and 8 781.6 kN.When compared with on-site measurements,the formula-derived thrust force is determined to be 1.38 times the maximum measured value on-site,indicating a certain safety reserve and potential cost savings.These findings provide valuable insights for the design and execution of similar engineering projects in the future.
关键词
管幕法/咬合顶管/接触压力/顶推力
Key words
pipe curtain method/interlocking pipe jacking/contact pressure/thrust force
维普
万方数据