Geomechanics and Engineering

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Study on large tonnage pile foundation load test system and field test of long rock-socketed pile

  • Zhang, Xue-feng (Research Institute of Highway Ministry of Transport, M.O.T) ;
  • Ni, Ying-sheng (Research Institute of Highway Ministry of Transport, M.O.T) ;
  • Song, Chun-xia (Research Institute of Highway Ministry of Transport, M.O.T) ;
  • Xu, Dong (Department of Bridge Engineering, Tongji University)
  • Received : 2020.01.08
  • Accepted : 2020.05.18
  • Published : 2020.06.25
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Abstract

Large tonnage pile foundation load test system is designed in this paper by using pre-stressed technique to optimize the design of anchor pile reaction beam system, in which project pile can be successfully taken as anchor pile. The test results show that the cracks and excessive deformations of the prestressed anti-force device designed in this study have not occurred, and the prestressed tendons of the anchor pile ensure that the anchor pile will not be pulled and fractured, and the prestressed tendons can be reused, thus ensuring the safety and reliability of the test. This test method can directly test bearing capacity of long rock-socketed piles, and analysis bearing behaviors from test results of sensors which embedded in the pile. Through test studied, authors summarized the vertical bearing characteristics of long rock-socketed piles and the main problems that should be paid attention to during design and construction, and provided reliable solutions.

Keywords

Acknowledgement

This study was funded by Young Elite Scientists Sponsorship Program by China Association for Science and Technology. The authors thank the anonymous reviewers and the Editor for their constructive comments and advice, which greatly improved the quality of this paper.

References

  1. Catal, S. (2014), "Buckling analysis of semi-rigid connected and partially embedded pile in elastic soil using differential transform method", Struct. Eng. Mech., 52(5), 971-995. http://doi.org/10.12989/sem.2014.52.5.971.
  2. Chen, Y.H., Chen, L., Xu, K., Liu, L. and Ng, C.W. (2013), "Study on critical buckling load calculation method of piles considering passive and active earth pressure", Struct. Eng. Mech., 48(3), 367-382. http://doi.org/10.12989/sem.2013.48.3.367.
  3. Chore, H.S., Ingle, R.K. and Sawant, V.A. (2014), "Non linear soil structure interaction of space frame-pile foundation-soil system", Struct. Eng. Mech., 49(1), 95-110. http://doi.org/10.12989/sem.2014.49.1.095.
  4. Cong, X. and Zhijian, C. (2015), "Modification calculation of lateral friction resistance of super diameter bored pile under deep-water condition", Site Investigat. Sci. Technol., 4, 002.
  5. Dias, D. (2016), "Numerical modelling of a pile-supported embankment using variable inertia piles", Struct. Eng. Mech., 61(2), 245-253. https://doi.org/10.12989/sem.2017.61.2.245.
  6. Fattah, M.Y., Yousif, M.A. and Al-Tameemi, S.M. (2015), "Effect of pile group geometry on bearing capacity of piled raft foundations", Struct. Eng. Mech., 54(5), 829-853. http://doi.org/10.12989/sem.2015.54.5.829.
  7. Feng, S.J., Lu, S.F. and Shi, Z.M. (2016), "Field investigations of two long steel pipe piles in offshore areas", Mar. Georesour. Geotechnol., 34(6), 559-570. http://doi.org/10.1080/1064119X.2015.1038760.
  8. Lee, J., Kim, W., Kim, K., Park, S. and Jeong, Y. (2016), "Strengthened and flexible pile-to-pilecap connections for integral abutment bridges", Steel Compos. Struct., 20(4), 731-748. http://doi.org/10.12989/scs.2016.20.4.731.
  9. Li, S.C., Zhang, Q., Zhang, Q.Q. and Li, L.P. (2016), "Field and theoretical study of the response of long bored pile subjected to compressive load", Mar. Georesour. Geotechnol., 34(1), 71-78. http://doi.org/10.1080/1064119X.2014.958883.
  10. Li, Y.H., Wang, W.D. and Wu, J.B. (2015), "A calculation method of pile shaft ultimate friction of tip post grouted long bored pile". Rock Soil Mech., 36(S1), 382-386.
  11. Qian, Y., Xu, G. and Wang, R. (2013), "Experimental research on failure behavior of soil around pile under compression", Indonesian J. Elect. Eng. Comput. Sci., 11(4). http://doi.org/10.11591/telkomnika.v11i4.2377.
  12. Saha, R., Dutta, S.C. and Haldar, S. (2015), "Effect of raft and pile stiffness on seismic response of soil-piled raft-structure system", Struct. Eng. Mech., 55(1), 161-189. http://doi.org/10.12989/sem.2015.55.1.161.
  13. Tung, N.K., Li, W., Thanh, N.M. and Loi, N.X. (2015), "Application of pile bottom post-grouting technology to increase the bearing capacity of bored piles in Vietnam", Electron. J. Geotech. Eng., 20, 4439-4454.
  14. 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., 7(2), 201-212. http://doi.org/10.12989/gae.2014.7.2.201.

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