A Pile-Soil Separation Concerned Model for Laterally Loaded Piles in Layered Soils
A pile-soil separation concerned continuum method is proposed to analyze the response of laterally loaded piles in a homogeneous multilayer elastic medium. The displacement fields of soil vary in the vertical direction and decrease in the radical direction. Variational principles are used to obtain the governing differential equations for the pile and soil displacements. Closed-form solutions are derived and the pile deflection, pile rotation, bending moment and shear force for the entire length of the pile can be obtained. The validity of proposed approach is demonstrated through comparisons with previous methods, 3D FD analysis and data obtained from a published pile test. The influence of pile-soil separation is explicated by the results of a comprehensive parametric study involving the slenderness ratio and flexibility factor of the pile. It can be concluded that the deflection of pile is larger when pile-soil separation happens, and the effect can be reduced for piles with larger slenderness ratio and medium flexibility.
Keywordspile-soil separation laterally loaded pile layered soils
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- 1.Reese, L.C., Matlock, H.: Non-dimensional solutions for laterally-loaded piles with soil modulus assumed proportional to depth. In: Proceedings of 8th Texas Conference on Soil Mechanics and Foundation Engineering, Austin, Texas, pp. 1–41 (1956)Google Scholar
- 2.Matlock, H., Reese, L.C.: Generalized solutions for laterally loaded piles. Journal of Soil Mechanics and Foundation Division. ASCE 86, 63–91 (1960)Google Scholar
- 3.Reese, L., Cox, W.: Soil behavior from analysis of tests of uninstrumented piles under lateral loading. In: Proc. Seventy-first Annual Meeting, pp. 161–176. ASTM, San Francisco (1968)Google Scholar
- 4.Matlock, H.: Correlations for design of laterally loaded piles in soft clay. In: Proc. 2nd Offshore Technology Conference. TX1, Houston, pp. 577–594 (1970)Google Scholar
- 5.Reese, L.C., Cox, W.R., Koop, F.D.: Analysis of laterally loaded piles in sand. In: Proc. 6nd Offshore Technology Conference. TX2, Houston, pp. 473–783 (1974)Google Scholar
- 6.Reese, L.C., Cox, W.R., Koop, F.D.: Field testing and analysis of laterally loaded piles in stiff clay. In: Proc. 7nd Offshore Technology Conference. TX2, Houston, pp. 671–690 (1975)Google Scholar
- 8.Desai, C.S., Appel, G.C.: 3-D analysis of laterally loaded structures. In: Proc. 2nd International Conference on Numerical Methods in Geomechanics, Blacksburg, VA, pp. 405–418 (1976)Google Scholar
- 9.Bhowmik, S., Long, J.H.: An analytical investigation of the behavior of laterally loaded piles. In: Proc. Geotechnical Engineering Congress, ASCE, vol. 2(27), pp. 1307–1318 (1991)Google Scholar
- 19.Poulos, H.G.: Behavior of laterally loaded piles:1-single piles. Journal of the Soil Mechanics and Foundations Division ASCE 97(SM5), 711–731 (1971a)Google Scholar
- 27.Poulos, H.G., Davis, E.H.: Pile foundation analysis and design. Series in geotechnical engineering. John Wiley and Sons (1980)Google Scholar
- 29.McClelland, B., Focht Jr., J.A.: Soil modulus for laterally loaded piles. Transactions ASCE 123, 1049–1063 (1958)Google Scholar