DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT

Authors

  • Hao Ding School of Highway, Chang’an University, Xi’an 710064, China
  • Linjian Su School of Highway, Chang’an University, Xi’an 710064, China
  • Jinxing Lai School of Highway, Chang’an University, Xi’an 710064, China
  • Yuanhang Zhang School of Highway, Chang’an University, Xi’an 710064, China

DOI:

https://doi.org/10.14311/CEJ.2017.03.0022

Keywords:

Tunnel engineering, Root piles, Foundation bottom consolidation, Construction

Abstract

Over the past couple of decades, root piles as the new tool for addressing a number of tough problems have been gaining a continually increasing interest in tunnel, especially for complex geological conditions. Therefore, in order to promote the development and application of root piles in tunnel engineering, this paper systematically sorts out the research status and development prospect of root piles from the application in foundation underpinning to reinforcement of tunnel foundation. Firstly, the type and development process of root piles are discussed. Secondly, the reinforcement mechanism of the root piles in the tunnel base is refined and combed: the reinforcement mechanism analysis focuses on frictional resistance of soil around pile, soil among piles, and piles. Thirdly, the calculation method of reinforced tunnel foundation is studied from the bearing of vertical load, horizontal load and pile reinforcement design. And through the engineering case, the paper illustrates the reinforcement effect of the root pile in ensuring the stability of the tunnel and the concrete process of the root piles in the tunnel construction. Finally, the problem and development prospect of root piles are discussed, so as to provide new perspectives and fundamental data for the research on tunnel engineering.

Downloads

Download data is not yet available.

References

J. X. Lai, K. Y. Wang, J. L. Qiu et al., “Vibration response characteristics of the cross tunnel structure,” Shock & Vibration, vol. 2016, Article ID 9524206, 2016. doi: 10.1155/2016/9524206.

M.N. Vu, W. Broere, and J. Bosch, "The impact of shallow cover on stability when tunnelling in soft soils,"Tunnelling & Underground Space Technology, vol.50, pp. 507-515,2015

H. Xing, F. Xiong, and J. Wu, “Effects of Pit Excavation on an Existing Subway Station and Preventive Measures,”. Journal of Performance of Constructed Facilities, vol. 30, no.6, pp. 2016 ;

A. Chepurnova, "Assessing the influence of jet-grouting underpinning on the nearby buildings,"Journal of Rock Mechanics and Geotechnical Engineering, vol.6, no.2, pp.105-112,2014

M. Cardu, and J. Seccatore, "Quantifying the difficulty of tunnelling by drilling and blasting,"Tunnelling & Underground Space Technology, vol.60, pp.178-182,2016

D. Wang, and W. Sui, "Grout diffusion characteristics during chemical grouting in a deep water-bearing sand layer," International Journal of Mining Science and Technology,vol.22, no.4, pp.573-577, 2012

G. Meschke, J. Ninic. J. Stascheit, and A. Alsahly, "Parallelized computational modeling of pile–soil interactions in mechanized tunneling,"Engineering Structures,vol.47,no.1,pp.35-44,2013.

Jiang Qingwei .Research on Stability at high digging root pile slope protection[D]. Xi’an: Chang’an University, 2014.(in chinese)

S. Seki, S. Kaise, Y. Morisaki et al., "Model experiments for examining heaving phenomenon in tunnels,"Tunnelling & Underground Space Technology Incorporating Trenchless Technology Research, vol.23, no.2, pp.128-138,2008.

C.J. Lee, B.R. Wu, H.T. Chen, and K.H. Chiang, "Tunnel stability and arching effects during tunneling in soft clayey soil,"Tunnelling & Underground Space Technology,vol.21, no. 2, pp. 119-132,2006.

Li Zhan, Teng Yanjing Li Qingrui et al. Micro-pile techniques for improvement project of existing buildings[J]. China Civil Engineering Journal, 2015(S2):197-201.(in chinese).

WANG Hui, CHENG jianping, QUE jinsheng. Research on design and application of root piles to Strengtheningfoundations[J]. Rock and Soil Mechanics,2006(s2):1290-1294.(in chinese)

S.W. Sun, B.Z. Z hu, and J.C. Wang, "Design method for stabilization of earth slopes with micropiles,"Soils & Foundations, vol.53, no.4, pp.487-497,2013.

A.E. Elsaied, "Performance of footing with single side micro-piles adjacent to slopes,"AEJ - Alexandria Engineering Journal,vol.54,no.4, pp. 903-910,2014.

C. Zanuy, P.D.L. Luente, and M. Pinilla, "Bending strength of threaded connections for micropiles,"Journal of Constructional Steel Research,vol.78, pp.68-78,2012.

R. Vlentino, E. Romeo, and A. Misra, "Mechanical Aspects of Micropiles Made of Reinforced Polyurethane Resins."Geotechnical and Geological Engineering, vol.31, no.2, pp.463-478,2013.

B. Nikbakhtan, and M.Osanloo, "Effect of grout pressure and grout flow on soil physical and mechanical properties in jet grouting operations." International Journal of Rock Mechanics & Mining Sciences, vol.46, no.3, pp.498-505, 2009.

V. Fattahpour, W.C. Sze, and B.A. Baudet, "Laboratory investigation of shaft grouting."Geotechnical Engineering, vol.168, no. 1, pp. 65-74,2015.

K. Zyka, and A. Mohajerani, "Composite piles: A review."Construction & Building Materials, vol.107, pp.394-410,2016.

J.H. Deng, J.Q. Wu, W.B. Li, and D.H. Jiang, "Application of Composite Foundation in Reinforcement Treatment for a Highway Existing Culvert." Geotechnical Investigation & Surveying, vol.250-253, no. 3,pp.1686-1690,2008.

J. Veludo, D. Dias-Da-Costa, E.N.B.S. Julio, and P.L. Pinto, "Bond strength of textured micropiles grouted to concrete footings."Engineering Structures, vol.35, no.1, pp.288-295,2012.

D.A. Bruce, A.F. Dimillio, and I. Juran, "Introduction to Micropiles: An International Perspective."Foundation Upgrading and Repair for Infrastructure Improvement ASCE, vol.33, pp.2081-2088,2014.

S. Thiyyakkandi, M. Mcvay, and P. Lai, "Experimental Group Behavior of Grouted Deep Foundations."Geotechnical Testing Journal, vol.37, no. 3, 2014.

J.M. Ortega, A. Albaladejo, J.L. Pastor, I. Sanchez, and M.A. Climent, "Influence of using slag cement on the microstructure and durability related properties of cement grouts for micropiles." Construction & Building Materials, vol. 38, no. 1, pp. 84-93,2013.

Q.Q. Zhang, Z.M. Zhang, and S.C. Li. "Investigation into Skin Friction of Bored Pile Including Influence of Soil Strength at Pile Base."Marine Georesources & Geotechnology, vol.31, no. 1.pp.1-16,2013.

B. Nikbakhtan, K. Ahangari, and N.Rahmani, "Estimation of jet grouting parameters in Shahriar dam,Iran." International Journal of Mining Science and Technology, vol. 20, no. 3, pp. 472-477,2010.

U.S. Okyay, and D.Dias, "Use of lime and cement treated soils as pile supported load transfer platform."Engineering Geology, vol. 114, no. 1, pp.34-44,2010.

H. Xing, X. Yang, C. Xu, and G. Ye, "Strength characteristics and mechanisms of salt-rich soil–cement."Engineering Geology, vol. 103, no.1-2, pp. 33-38,2009.

A.V.D. Fonseca, "Voids/Cement ratio controlling tensile strength of cement treated soils."Journal of Geotechnical & Geoenvironmental Engineering, vol.137, no. 11, pp. 1126-1131,2011.

Pang liexin. Field test study about bearing capacity of single root pile in Loess Bedding[D].Southwest Jiaotong University, 2006(in chinese) [31] P.M. Gallagher, S. Spatari, and J. Cucura. "Hybrid life cycle assessment comparison of colloidal silica and cement grouted soil barrier remediation technologies."Journal of Hazardous Materials, vol.250-251, pp.421-430,2013.

J.L. Pastor, J.M. Ortega, M. Flor et al, "Microstructure and durability of fly ash cement grouts for micropiles."Construction & Building, vol. 117, pp. 47-57,2016.

Z. Zhang, and G. Xin,. "The Application Effect Analysis of Post grouting Under Bored Piles with Different Bearing Strata."Journal of Building Structures, vol.23, no. 6, pp. 85-89,2002.

M. Ashour, and H. Ardalan, "Analysis of pile stabilized slopes based on soil–pile interaction."Computers & Geotechnics , vol.39, no. 1,pp.85-97,2012.

Dou Shikang. Study on the Construction Technique of Luotuochang Tunnel in Aeolian Sand Formation[D]. Xi’an: Chang’an University, 2012.(in chinese)

T. Kasper, and G. Meschke, "On the influence of face pressure, grouting pressure and TBM design in soft ground tunnelling."Tunnelling & Underground Space Technology, vol.21, no. 2, pp.160-171,2006.

M.A. Soomro, Y. Hong, C.W.W.W Ng, H. Lu, S. Peng, "Load transfer mechanism in pile group due to single tunnel advancement in stiff clay."Tunnelling & Underground Space Technology, vol. 45, pp. 63-72,2015.

SUN Shao-rui, WU Ji-min, WEI Ji-hong et al. Stability analysis and evaluation of slope reinforced with root piles[J]. Rock and Soil Mechanics,2003,24(5):776-780.(in chinese)

ZHU Zheng-guo, ZHU Yong-quan, WU Guang-ming et al. Strengthening method and stability analysis for tunnel base in debris flow accumulation body[J]. Chinese Journal of Geotechnical Engineering, 2013(s2):617-621.(in chinese)

J.X. Lai, Z.H. Feng, J.L. Qiu et al, “In-situ test of grouting reinforcement for water-enriched sandy gravel ground in river floodplain”, Advances in Materials Science and Engineering, vol. 2016, Article ID 2129659, 2016. doi: 10.1155/2016/2129659.

C. Liang, and M. Fall, "Mechanical and thermal properties of cemented tailings materials at early ages: Influence of initial temperature, curing stress and drainage conditions."Construction & Building Materials, vol.125, pp. 553-563,2016.

F.S. Tehrani, P. Nguyen, R.B.J. Brinkgreve, and A.F.V. Tol, "Comparison of Press-Replace Method and Material Point Method for analysis of jacked piles."Computers & Geotechnics, vol. 78, pp.38-53,2016.

K. Chatterjee, D. Choudhury, and H.G. Poulos, "Seismic analysis of laterally loaded pile under influence of vertical loading using finite element method."Computers & Geotechnics, vol. 67, pp. 172-186,2015.

F. Liang, Z. Song, W.D. Guo, "Group interaction on vertically loaded piles in saturated poroelastic soil."Computers & Geotechnics, vol. 56, no.1, pp. 1-10, 2014.

P.C. Jiang, L.H. Zou, and X. Wang, "Application of Root Pile to Reinforce High Embankment."Applied Mechanics & Materials, vol. 226-228,pp. 1269-1274, 2012.

O.L. Ghazzaly, S.T. Hwong, and M.W. O'Nell, "Approximate analysis of a pile under dynamic, lateral

Downloads

Published

2017-10-31

Issue

Section

Articles

How to Cite

DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT. (2017). Stavební Obzor - Civil Engineering Journal, 26(3). https://doi.org/10.14311/CEJ.2017.03.0022