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Author：

Xu, Y. (Xu, Y..) | Huang, Z. (Huang, Z..) | Zhang, C. (Zhang, C..) | Li, P. (Li, P..) | Kang, J. (Kang, J..) | Zhang, X. (Zhang, X..) | Shan, Y. (Shan, Y..)

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EI Scopus

Abstract：

In　response　to　the　problem　that　rectangular　pipe　jacking　tunnels　are　prone　to　produce　longitudinal　deformation,　which　can　result　in　joint　failure,　a　shell-joint　theoretical　model　for　rectangular　pipe　jacking　tunnels　is　proposed,　and　the　longitudinal　deformation　of　tunnels　under　uneven　settlement　is　examined.　Firstly,　indoor　model　tests　are　carried　out　to　explore　the　mechanical　properties　of　the　joints　in　rectangular　pipe　jacking　tunnels.　Subsequently,　the　shell-joint　theoretical　model　is　established,　and　the　stiffness　matrix　and　computational　methods　for　the　mechanical　elements　of　the　joints　are　offered.　Then,　a　numerical　model　is　developed　and　compared　with　the　results　of　the　indoor　model　tests.　Finally,　relying　on　a　case　study　of　a　rectangular　pipe　jacking　tunnel　with　20　segments,　the　tunnel’s　longitudinal　deformation　under　uneven　settlement　is　investigated.　The　results　show　that　joint　failure　appears　in　three　stages:　closure　of　the　gap,　force　and　deformation　failure　of　the　steel　sleeve　ring,　with　the　shear　and　bending　resistance　of　the　joints　mainly　borne　by　the　steel　sleeve　ring.　The　simulation　results　of　the　shell-joint　theoretical　model　are　in　line　with　the　model　test　results,　verifying　the　practicality　and　accuracy　of　the　model.　The　longitudinal　deformation　of　the　rectangular　pipe　jacking　tunnel　is　greatly　affected　by　the　stiffness　of　the　foundation.　The　maximum　additional　settlements　corresponding　to　the　three　soil　types　(gravel,　silt,　and　clay)　are　3.　72　mm,　7.　66　mm,　and　12.　14　mm　respectively.　As　the　foundation　stiffness　decreases,　the　influence　of　uneven　settlement　on　the　tunnel　joints　will　increase.　©　2024　Chinese　Academy　of　Railway　Sciences.　All　rights　reserved.

Keyword：

Foundation stiffness Rectangular pipe jacking Tunnel longitudinal deformation Subway station Shell-joint theoretical model

Author Community：

  • [ 1 ] [Xu Y.]School of Civil Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 2 ] [Xu Y.]Academician Workstation of Mine Safety and Underground Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 3 ] [Xu Y.]Engineering Research Center of Urban Underground Engineering, Universities of Inner Mongolia Autonomous Region, Inner Mongolia, Baotou, 014010, China
  • [ 4 ] [Huang Z.]School of Civil Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 5 ] [Huang Z.]Academician Workstation of Mine Safety and Underground Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 6 ] [Huang Z.]Engineering Research Center of Urban Underground Engineering, Universities of Inner Mongolia Autonomous Region, Inner Mongolia, Baotou, 014010, China
  • [ 7 ] [Huang Z.]The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 8 ] [Zhang C.]School of Civil Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 9 ] [Zhang C.]Academician Workstation of Mine Safety and Underground Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 10 ] [Zhang C.]Engineering Research Center of Urban Underground Engineering, Universities of Inner Mongolia Autonomous Region, Inner Mongolia, Baotou, 014010, China
  • [ 11 ] [Li P.]The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 12 ] [Kang J.]School of Civil Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 13 ] [Kang J.]Academician Workstation of Mine Safety and Underground Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 14 ] [Kang J.]Engineering Research Center of Urban Underground Engineering, Universities of Inner Mongolia Autonomous Region, Inner Mongolia, Baotou, 014010, China
  • [ 15 ] [Zhang X.]School of Civil Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 16 ] [Zhang X.]Academician Workstation of Mine Safety and Underground Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China
  • [ 17 ] [Zhang X.]Engineering Research Center of Urban Underground Engineering, Universities of Inner Mongolia Autonomous Region, Inner Mongolia, Baotou, 014010, China
  • [ 18 ] [Shan Y.]The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, 100124, China

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Source ：

China Railway Science

ISSN： 1001-4632

Year： 2024

Issue： 4

Volume： 45

Page： 99-110

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 9

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