CPT-Based Interpretation of Pile Load Tests in Clay-Silt Soil
Keywords:Cone penetration tests, driven piles, ultimate capacity, finite element analysis.
AbstractTwo pile axial load tests were performed in a site in Depok, West Java. The soil of the site is predominantly a silt-clay soil, characterized by seven mechanical cone penetration tests (CPTs). The piles were 5.5 m long and 11.5 m long, 250 mm square piles. The results of the static load tests showed that the ultimate capacities were achieved. The axial load tests were subsequently back-analyzed using an axisymmetric finite element model using PLAXIS. In the back-analyses, the soil modulus and shear strength in the model, using the cone penetration resistance as the reference, were adjusted so that the numerical load-settlement curves matched the actual curves. The results of the back-analyses are then synthesized with the results of the CPTs, and are compared with available design guidelines. Some recommendations are then proposed.
Tjandra, D. and Wulandari, P.S., Pengaruh Elektrokinetik terhadap Daya Dukung Pondasi Tiang di Lempung Marina, Civil Engineering Dimension, Vol. 8(1), 2006, pp.15–19.
Canadian Geotechnical Society, Canadian Foundation Engineering Manual, BiTech Publishers, Richmond, 1992.
Mayne, P.W., Cone Penetration Testing – A Synthesis of Highway Practice (NCHRP Synthesis 368), Transportation Research Board, Washington, D.C., 2007.
American Society for Testing and Materials, Standard Test Method for Mechanical Cone Penetration Tests of Soil (D3441), Annual Book of Standards, Vol. 04.08, Philadelphia, 2008.
Robertson, P.K., Soil Classification using the Cone Penetration Test, Canadian Geotechnical Journal, Vol. 27(1), 1990, pp.151-158.[CrossRef]
Liao, S.C. and Whitman, R.V., Overburden Correction Factors for SPT in Sand, J. Geotechnical Engineering, ASCE, Vol. 114(4), 1986, pp.373-377.[CrossRef]
American Society for Testing and Materials, Standard Test Method for Piles under Static Axial Compressive Load (D1143), Annual Book of Standards, Vol. 04.08, Philadelphia, 2008.
Hirany, A. and Kulhawy, F.H., Conduct and Interpretation of Load Tests on Drilled Shaft Foundation: Detailed Guidelines (Report EL-5915 (1)), Electric Power Research Institute, Palo Alto, 1998.
Brinkgreve, R.B.J., PLAXIS 2D–Version 8, Balkema, Rotterdam, 2002.
Holeyman, A., Bauduin, C., Bottiau, M., Debacker, P., De Cock, F., Dupont, E., Hilde, J.L., Legrand, C., Huybrechts, N., Menge, P., and Simon, G., Design of Axially Loaded Piles–Belgian Practice. Proc. ERTC3 Seminar–Design of Axially Loaded Piles European Practice, Brussels, 1997, pp.57-82.
Everst, H.J. and Luger, H.J., Dutch National Codes for Pile Design. Proc. ERTC3 Seminar– Design of Axially Loaded Piles European Practice, Brussels, 1997, pp. 243-265.
Bustamante, M. and Frank, R. 1997. Design of Axially Loaded Piles–French Practice. Proc. ERTC3 Seminar–Design of Axially Loaded Piles European Practice, Brussels, 1997, pp.161-175.
Poulos, H.G., Carter, J.P., and Small, J.C., Foundations and Retaining Structures–Research and Practice, Proc. 15th International Conference Soil Mechanics & Geotechnical Engineering, Istanbul, Vol. 4, 2001, pp.2527-2606.
Poulos, H.G., Pile Behavior–Theory and Application. Geotechnique, Vol. 39(3), 1989, pp. 365-415.[CrossRef]
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