DOI QR코드

DOI QR Code

Experimental evaluation of the active tension bolt

  • 투고 : 2016.09.03
  • 심사 : 2016.04.20
  • 발행 : 2016.08.25

초록

To secure the stability of geotechnical infrastructures and minimize failures during the construction process, a number of support systems have been introduced in the last several decades. In particular, stabilization methods using steel bars have been widely used in the field of geotechnical engineering. Rock bolt system is representative support system using steel bars. Pre-stressing has been applied to enhance reinforcement performance but can be released because of the failure of head or anchor sections. To overcome this deficiency, this paper proposes an innovative support system that can actively reinforce the weak ground along the whole structural element by introducing an active tension bolt containing a spring unit to the middle of the steel bar to increase its reinforcement capacity. In addition, the paper presents the support mechanism of the active tension bolt based on a theoretical study and employs an experimental study to validate the performance of the proposed active tension bolt based on a down-scaled model. To examine the feasibility of the active tension unit in a pillar, the paper considers a pullout test and a small-scale experimental model. The experimental results suggest the active tension bolt to be an effective support system for pillar reinforcement.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Land, Infrastructure, and Transport

참고문헌

  1. ACI 349-79 (1976), Code requirements for nuclear safety related concrete structures, American Concrete Institute, Detroit, MI, USA.
  2. AISC (2006), Steel Design Guide, Base plate and anchor rod design.
  3. Ansell, A. (2005), "Laboratory testing of a new type of energy absorbing rock bolt", Tunn. Undergr. Space Technol., 20(4), 291-300. https://doi.org/10.1016/j.tust.2004.12.001
  4. Blanco-Fernandez, E., Castro-Fresno, D., Del Coz Diaz, J.J. and Lopez-Quijada, L. (2011), "Flexible systems anchored to the ground for slope stabilisation: Critical review of existing design methods", Eng. Geol., 122(3-4), 129-145. https://doi.org/10.1016/j.enggeo.2011.05.014
  5. Blanco Martin, L., Tijani, M. and Hadj-Hassen, F. (2011), "A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests", Construct. Build. Mater., 25(2), 749-755. https://doi.org/10.1016/j.conbuildmat.2010.07.011
  6. Chappell, B.A. (1989), "Rock bolts and shear stiffness in jointed rock mass", J. Geotech. Geoenviron. Eng., 115(2), 179-197. https://doi.org/10.1061/(ASCE)0733-9410(1989)115:2(179)
  7. Chen, Y.J., Wu, H.W., Marcos, M.C.M. and Lin, S.S. (2013), "Improvement of tip analysis model for drilled shafts in cohesionless soils", Geomech. Eng., Int. J., 5(5), 447-462. https://doi.org/10.12989/gae.2013.5.5.447
  8. Delhomme, F., Debicki, G. and Chaib, Z. (2010), "Experimental behaviour of anchor bolts under pullout and relaxation tests", Construct. Build. Mater., 24(3), 266-274. https://doi.org/10.1016/j.conbuildmat.2009.08.038
  9. Divi, S., Chandra, D. and Daemen, J. (2011), "Corrosion susceptibility of potential rock bolts in aerated multi-ionic simulated concentrated water", Tunn. Undergr. Space Technol., 26(1), 124-129. https://doi.org/10.1016/j.tust.2010.07.003
  10. Eurocode 3 (2005), Design of steel structure - Part 1-8: Design of joints, European Standards, CEN, Brussels, Belgium.
  11. Franzius, J.N., Potts, D.M., Addenbrooke, T.I. and Burland, J.B. (2004), "The influence of building weight on tunnelling-induced ground and building deformation", Soil. Found., 44(1), 25-38. https://doi.org/10.3208/sandf.44.25
  12. Jiang, S.H., Li, D.Q., Zhang, L.M. and Zhou, C.B. (2014), "Time-dependent system reliability of anchored rock slopes considering rock bolt corrosion effect", Eng. Geol., 175, 1-8. https://doi.org/10.1016/j.enggeo.2014.03.011
  13. Kim, D.K., Oh, B.J. and Lee, S.D. (2009), "Optimal pillar width of twin tunnels in horizontal jointed rock", ITA-AITES World Tunnel Congress2009, Budapest, Hungary, May.
  14. Komurlu, E. and Kesimal, A. (2015), "Sulfide-rich mine tailings usage for short-term support purposes: An experimental study on paste backfill barricades", Geomech. Eng., Int. J., 9(2), 195-205. https://doi.org/10.12989/gae.2015.9.2.195
  15. Lee, I.M., Han, S.I., Kim, H.J., Yu, J.D., Min, B.K. and Lee, J.S. (2012), "Evaluation of rock bolt integrity using Fourier and wavelet transforms", Tunn. Undergr. Space Technol., 28(1), 304-314. https://doi.org/10.1016/j.tust.2011.11.009
  16. Li, C. and Stillborg, B. (1999), "Analytical models for rock bolts", Int. J. Rock Mech. Min. Sci., 36(8), 1013-1029. https://doi.org/10.1016/S1365-1609(99)00064-7
  17. Liu, X.R., Li, D.L., Wang, J.B. and Wang, Z. (2015), "Surrounding rock pressure of shallow-buried bilateral bias tunnels under earthquake", Geomech. Eng., Int. J., 9(4), 427-445. https://doi.org/10.12989/gae.2015.9.4.427
  18. Livaoglu, R. (2013), "Soil interaction effects on sloshing response of the elevated tanks", Geomech. Eng., Int. J., 5(4), 283-297. https://doi.org/10.12989/gae.2013.5.4.283
  19. Mahdi, M. and Katebi, H. (2015), "Numerical modeling of uplift resistance of buried pipelines in sand, reinforced with geogrid and innovative grid-anchor system", Geomech. Eng., Int. J., 9(6), 757-774. https://doi.org/10.12989/gae.2015.9.6.757
  20. Osgoui, R.R. and Unal, E. (2009), "An empirical method for design of grouted bolts in rock tunnels based on the geological strength index (GSI)", Eng. Geol., 107(3), 154-166. https://doi.org/10.1016/j.enggeo.2009.05.003
  21. Peck, R.B. (1969), "Deep excavations and tunnelling in soft ground", Proceeding of the 7th International Conference on Soil Mechanics and Foundation Engineering, Mexico City, Mexico, pp. 225-290.
  22. Pells, P. and Bertuzzi, R. (1999), "Permanent rockbolts - The problems are in the detail", Proceeding from 10th Australian Tunnelling Conference, Melbourne, Australia, March.
  23. Petros, P. (1991), Ground Anchors and Anchored Structures, John Wiley and Sons, Canada.
  24. Siad, L. (2001), "Stability analysis of jointed rock slopes reinforced by passive fully grouted bolts", Comput. Geotech., 28(5), 325-347. https://doi.org/10.1016/S0266-352X(01)00004-0
  25. Song, K.I., Cho, G.C., Chang, S.B. and Lee, I.M. (2013), "Beam-spring structural analysis model for the design of tunnel pre-reinforcement support system", Int. J. Rock Mech. Min. Sci., 59, 139-150.
  26. Song, M.K., Choo, S.Y., Kang, S.S. and Cho, Y.D. (2010), "A supportability comparison of rock and spiral bolts with numerical method", Proceedings of the Regional Symposium of the International Society for Rock Mechanics EUROCK 2009, Dubrovnik, Croatia, October, pp. 679-684.
  27. Spearing, A.J.S., Greer, B. and Reilly, M. (2011), "Improving rockbolt installations in US coal mines", J. South Afr. Inst. Min. Metallurgy, 111(8), 555-563.
  28. Zhao, Y.C., Zhang, J.Y. and Xiang, Z.Q. (2013), "Research on arching mechanism of the lane arching under pre-stress bolt supporting", Adv. Mater. Res., 671-674, 1140-1143. https://doi.org/10.4028/www.scientific.net/AMR.671-674.1140

피인용 문헌

  1. Investigating the supporting effect of rock bolts in varying anchoring methods in a tunnel vol.19, pp.6, 2019, https://doi.org/10.12989/gae.2019.19.6.485