Geomechanics and Engineering

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Model test and numerical simulation on the bearing mechanism of tunnel-type anchorage

  • Li, Yujie (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute) ;
  • Luo, Rong (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute) ;
  • Zhang, Qihua (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute) ;
  • Xiao, Guoqiang (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute) ;
  • Zhou, Liming (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute) ;
  • Zhang, Yuting (Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute)
  • Received : 2016.04.23
  • Accepted : 2016.09.27
  • Published : 2017.01.25
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Abstract

The bearing mechanism of tunnel-type anchorage (TTA) for suspension bridges is studied. Model tests are conducted using different shapes of plug bodies, which are circular column shape and circular truncated cone shape. The results show that the plug body of the latter shape possesses much larger bearing capacity, namely 4.48 times at elastic deformation stage and 4.54 times at failure stage compared to the former shape. Numerical simulation is then conducted to understand the mechanical and structural responses of plug body and surrounding rock mass. The mechanical parameters of the surrounding rock mass are firstly back-analyzed based on the monitoring data. The calculation laws of deformation and equivalent plastic strain show that the numerical simulation results are rational and provide subsequent mechanism analysis with an established basis. Afterwards, the bearing mechanism of TTA is studied. It is concluded that the plug body of circular truncated cone shape is able to take advantage of the material strength of the surrounding rock mass, which greatly enhances its bearing capacity. The ultimate bearing capacity of TTA, therefore, is concluded to be determined by the material strength of surrounding rock mass. Finally, recommendations for TTA design are proposed and discussed.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. Ammann, O.H. (1933), "George Washington Bridge: General conception and development of design", Transact. Am. Soc. Civil Engrs.., 97(1), 1-65.
  2. Bencardino, F. and Condello, A. (2014), "Experimental study and numerical investigation of behavior of RC beams strengthened with steel reinforced grout", Comput. Concrete, Int. J., 14(6), 711-725. https://doi.org/10.12989/cac.2014.14.6.711
  3. Bencardino, F. and Condello, A. (2015), "SRG/SRP-concrete bond-slip laws for externally strengthened RC beams", Compos. Struct., 132, 804-815. https://doi.org/10.1016/j.compstruct.2015.06.068
  4. Bildik, S. and Laman, M. (2015), "Experimental investigation of the effects of pipe location on the bearing capacity", Geomech. Eng., Int. J., 8(2), 221-235. https://doi.org/10.12989/gae.2015.8.2.221
  5. Chen, H., Xia, C. and Li, R. (1995), "Stability analysis of the rock mass in the east anchoring area of Guangdong Humenbridge", J. Tongji Univ., 23(3), 338-342.
  6. Cundall, P.A. (2008), FLAC3D Manual: A Computer Program for Fast Lagrangian Analysis of Continua (Version 4.0), Itasca Consulting Group, Inc., Minneapolis, MN, USA.
  7. Hataf, N. and Shafaghat, A. (2015), "Numerical comparison of bearing capacity of tapered pile groups using 3D FEM", Geomech. Eng., Int. J., 9(5), 547-567. https://doi.org/10.12989/gae.2015.9.5.547
  8. Hu, B., Zeng, Q., Rao, D., Wang, S., Peng, Y., Liu, B., Liu, H. and Zhao, H. (2007), "Study on deformation law and failure mechanism of anchorage-surrounding rock system under tensile-shear complex stresses", Chinese J. Rock Mech. Eng., 26(4), 712-719.
  9. Kame, G.S., Dewaikar, D.M. and Choudhury, D. (2012), "Pullout capacity of vertical plate anchors in cohesion-less soil", Geomech. Eng., Int. J., 4(2), 105-120. https://doi.org/10.12989/gae.2012.4.2.105
  10. Lei, Z.H. (2005), "Construction techniques for anchorages of Jiaolongba bridge on No.214 National Road", World Bridges, 2, 27-29.
  11. Lu, Y.C. (2003), "The east tunnel-anchor of Chongqing Egongyan Yangtze River bridge", China Municip. Eng., 6, 31-34.
  12. Miki, C., Homma, K. and Tominaga, T. (2002), "High strength and high performance steels and their use in bridge structures", J. Construct. Steel Res., 58(1), 3-20. https://doi.org/10.1016/S0143-974X(01)00028-1
  13. Min, X., Yang, M. and Wang, K. (2011), "Study on construction technology of tunnel-type anchorage of suspension bridge", Copper Eng., 62(5), 839-849.
  14. Moradi, G. and Abbasnejad, A. (2015), "Experimental and numerical investigation of arching effect in sand using modified Mohr Coulomb", Geomech. Eng., Int. J., 8(6), 829-844. https://doi.org/10.12989/gae.2015.8.6.829
  15. Niroumand, H. and Kassim, K.A. (2013), "A review on uplift response of symmetrical anchor plates embedded in reinforced sand", Geomech. Eng., Int. J., 5(3), 187-194. https://doi.org/10.12989/gae.2013.5.3.187
  16. Roberts, G., Anderson, J.K., Hamilton, J.A.K., Henderson, W., McNeil, J.S., Roberts, G. and Shirley-Smith, H. (1967), "Forth road bridge", Proceedings of the Institution of Civil Engineers, 32(3), 321-512.
  17. Saleem, M. (2015), "Application of numerical simulation for the analysis and interpretation of pile-anchor system failure", Geomech. Eng., Int. J., 9(6), 689-707. https://doi.org/10.12989/gae.2015.9.6.689
  18. Shen, R.F., Leung, C.F. and Chow, Y.K. (2013), "Physical and numerical modeling of drag load development on a model end-bearing pile", Geomech. Eng., Int. J., 5(3), 195-221. https://doi.org/10.12989/gae.2013.5.3.195
  19. Spadea, G., Bencardino, F., Sorrenti, F. and Swamy, R.N. (2015), "Structural effectiveness of FRP materials in strengthening RC beams", Eng. Struct., 99, 631-641. https://doi.org/10.1016/j.engstruct.2015.05.021
  20. The Professional Standards Compilation Group of the People's Republic of China (2002), Design Specification for Highway Suspension Bridge (draft standard for approval); China Communications Press, Beijing, China.
  21. The Professional Standards Compilation Group of the People's Republic of China (2015), Standard for Engineering Classification of Rock Mass; China Communications Press, Beijing, China.
  22. Wang, Y. and Cao, H. (2004), "Construction techniques of tunnel-type anchorage for suspension bridge", Bridge Construct., 2, 53-55.
  23. Wang, H., Gao, B. and Sun, Z. (2005), "Study on mechanical behavior of tunnel anchorage system for suspension bridge", Chinese J. Rock Mech. Eng., 24(15), 2728-2735.
  24. Wang, J., Liu, W., Wang, L. and Han, X. (2015), "Estimation of main cable tension force of suspension bridges based on ambient vibration frequency measurements", Struct. Eng. Mech., Int. J., 56(6), 939-957. https://doi.org/10.12989/sem.2015.56.6.939
  25. Xia, C., Chen, H. and Li, R. (1997), "Testing study on field structure model of the east anchorage of Guangdong Humenbridge", Chinese J. Rock Mech. Eng., 16(6), 571-576.
  26. Xiao, B., Wu, X. and Peng, C. (2005), "Stability of the anchorage wall rock of tunnel for Chongqing Egongyan bridge", Chinese J. Rock Mech. Eng., 24(5), 591-595.
  27. Yang, J., Guo, Z. and Wan, R. (2002), "Application of tunnel anchorage with anchor rods to anchor system of the Second Yangtze River bridge in Wanzhou city", Highway, 1, 40-43.
  28. Zhang, Q., Hu, J., Chen, G., Liao, J., Zhang, Y. and Bian, Z. (2012), "Study of rock foundation stability of Aizhai Bridge", Chinese J. Rock Mech. Eng., 31(12), 2420-2430.
  29. Zhang, W., Ge, Y. and Levitan, M. L. (2013), "A method for nonlinear aerostatic stability analysis of longspan suspension bridges under yaw wind", Wind Struct., Int. J., 17(5), 553-564. https://doi.org/10.12989/was.2013.17.5.553
  30. Zhang, X., Li, Q., Ma, Y., Zhang, X. and Yang, S. (2014), "Large-scale pilot test study on bearing capacity of sea-crossing bridge main pier pile foundations", Geomech. Eng., Int. J., 7(2), 201-212. https://doi.org/10.12989/gae.2014.7.2.201
  31. Zhu, J., Wu, A. and Huang, Z. (2006), "Pulling test of anchorage model of Siduhe suspension bridge", J. Yangtze River Sci. Res. Inst., 23(4), 51-55.
  32. Zhu, H., Mei, G., Xu, M., Liu, Y. and Yin, J. (2014), "Experimental and numerical investigation of uplift behavior of umbrella-shaped ground anchor", Geomech. Eng., Int. J., 7(2), 165-181. https://doi.org/10.12989/gae.2014.7.2.165

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