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Geotechnical and Geological Engineering

, Volume 37, Issue 1, pp 251–266 | Cite as

Application of Improved Calculation Method Considering the Vehicle Loads in Branch Utility Tunnel

  • Liyun TangEmail author
  • Yong Quan
  • Yan Zhu
  • Jiami Xi
  • Peiyong Qiu
  • Feixiang Sun
Original Paper
  • 84 Downloads

Abstract

Aiming to study the influence of vehicle loads on the stability of branch utility tunnel during construction, the equivalent substitution of soil layer method without considering the change of rupture angle caused by vehicle loads is improved. According to the fracture mechanism of surrounding rocks, the deadweight of failure wedge is calculated when considering vehicle loads. Combined with the failure wedge equilibrium relation, the rupture angle is calculated by using extremum principle, and the equivalent soil layer with a new thickness is obtained to simplify vehicle loads. Based on the branch utility tunnel project in the city municipal pipeline, vehicle loads are simplified by using the conventional method, the equivalent substitution of soil layer method and the improved method respectively. The rupture angle and the thickness of equivalent soil layer calculated by the improved method are 58° and 0.53 m,which reduces 6.4 and 16% respectively compared with the equivalent substitution of soil layer method; the stress, vertical displacement of the segment and the ground settlement are analyzed among the three methods. It’s concluded that the improved method can be more effective and reasonable to reflect the effects of vehicle loads during the construction of the branch utility tunnel.

Keywords

Vehicle loads Branch utility tunnel The improved equivalent substitution of soil layer method Stability 

Notes

Acknowledgements

This research was supported by the National Natural Science Foundation of China (No. 41502298), the Key Plan for Innovative Science and Technology Groups of Shanxi Province of China (No. 2014KCT-30), China Postdoctoral Science Foundation (No. 2016M592816) and the Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of Education (No. 310826161110).

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Liyun Tang
    • 1
    Email author
  • Yong Quan
    • 1
  • Yan Zhu
    • 2
  • Jiami Xi
    • 1
  • Peiyong Qiu
    • 1
  • Feixiang Sun
    • 1
  1. 1.School of Architecture and Civil EngineeringXi’an University of Science and TechnologyXi’anChina
  2. 2.Xi’an International UniversityXi’anChina

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