Abstract
A lateral constraint can effectively reduce the foundation settlement and reduce the stress of a pile shaft in a foundation treatment. Based on the characteristics of railway engineering and soft soil engineering, this paper studied the influence that lateral constraint exerted on the stress and settlement of cement–soil pile composite foundation by using indoor large-scale model testing. A comparative analysis of the stress and settlement of cement–soil pile and soil following load change is performed, and the mechanism of lateral constraint is discussed. The results show that the settlement of the pile top with lateral constraint is 8–30% lower and that of the soil around the pile is 7–9% lower when comparing the settlement values of the composite foundation with and without lateral constraint in the cement–soil pile composite foundation. The stress value of the pile top in the composite foundation with the lateral constraint is 18–32% lower than that without any lateral constraint. The stress of the cement–soil pile shaft first increases and then decreases with the depth, and the maximum stress appears at 0.15–0.35 times the pile length from the top. The position of the maximum axial force of the pile without a lateral constraint is lower than that with a lateral constraint, and the maximum stress value of the pile is 112–153% of the stress value of the pile top. Therefore, setting the lateral constraint can effectively stop the lateral deformations of soft soil, reducing the settlement of the composite foundation and pile shaft stress.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Liu, F.; Fan, B.J.; Zhang, T.: Analysis on subgrade treatment of Shenyang–Dandong passenger dedicated line with flexible piles. Bridge Tunn. Constr. Mach. 30(11), 104–106 (2013)
Zeng, C.X.; Cheng, Y.; Wu, D.L.: Comparison of different foundation treatment effects on thick sand overlying thick silt foundation of high speed railway. China Railw. Sci. 35(4), 1–8 (2014)
http://news.gaotie.cn/jianshe/2016-05-19/325352.html [EB/OL]. Accessed 19 May 2016
Tavenas, F.; Leroueil, S.: Effects of stresses and time on yielding of clays. Jpn. Soc. Soil Mech. Found. Eng. 1, 319–326 (1977)
Handy, R.L.: Does lateral stress really influence settlement. Geotech. Geoenviron. Eng. 127(7), 623–626 (2001)
Wang, Z.L.; Li, Y.C.; Yin, Z.Z.: Discussion on settlement calculation of embankment considering lateral dilation behavior of soil. Chin. J. Rock Mech. Eng. 24(10), 1772–1777 (2005)
Wang, F.; Jin, W.; Wang, H.K.: Amendment of subgrade settlement of passenger dedicated line considering the lateral deformation effects. Chin. J. Geotech. Eng. 32(Sup. 2), 245–248 (2010)
Smadi, M.M.: Lateral Deformation and Associated Settlement Resulting from Embankment Loading of Soft Clay and Silt Deposits. University of Illinois at Urbana–Champaign, Urbana (2001)
Loganathan, N.; Balasubramaniam, A.S.; Bergado, D.T.: Deformation analysis of embankments. J. Geotech. Eng. 119(8), 1185–1206 (1993)
Han, J.L.; Zhao, Y.: Analysis on the settlement characteristic of lateral displacement of the high embankment. J. Wuhan Univ. Technol. (Transp. Sci. Eng.) 36(1), 165–167 (2012)
Liu, J.; He, J.; Tan, J.: Influencing factors of lateral extrusion on soft soil in composite foundation with flexible columns. J. Cent. South Univ. (Sci. Technol.) 45(7), 2333–2338 (2014)
Wu, B.Q.: Study on the Principles and Technical Methods for Grid Composite Foundation in Silt. Chengdu University of Technology, Chengdu (2008)
Bai, S.P.; Chen, X.P.; Li, Y.L.: Study of soft soil treatment technology of lateral restraint. Highway 7, 127–130 (2005)
Wu, Y.P.; Liu, J.; He, J.: Experiment and study on the stress testing of cement–soil piles. J. Hunan Univ. Technol. 26(1), 23–26 (2012)
Ito, T.; Matsui, T.: Methods to estimate lateral force acting on stabilizing piles. Soils Found. 15(4), 43–59 (1975)
Im, E.S.; Tai, H.K.: Lateral earth pressure acting on underground retaining structure in clay ground under embankment based on centrifuge model tests. KSCE J. Civ. Eng. 8(4), 387–396 (2004)
Chai, J.; Carter, J.P.: Modelling Soft Clay Behaviour. Deformation Analysis in Soft Ground Improvement, pp. 7–55. Springer, Dordrecht (2011)
Acknowledgements
Financial supports from the National Natural Science Foundation of China (No. 51108176) are sincerely acknowledged.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, Y., Zhang, K., Fu, L. et al. Performance of Cement–Soil Pile Composite Foundation with Lateral Constraint. Arab J Sci Eng 44, 4693–4702 (2019). https://doi.org/10.1007/s13369-018-3519-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13369-018-3519-1