Settlement Analysis of Axially Loaded Bored Piles: A Case History
Pile load tests should be applied to check the bearing capacity calculations and to determine the settlement of the pile corresponding to test load. Strain gauges can be installed into pile in order to determine the shaft resistance of the piles for every soil layer respectively. Detailed results can be obtained by means of strain gauges placed at certain levels into test piles. In the scope of this study, pile load test data obtained from two different projects are examined. Instrumented static pile load tests were applied on totally 7 test bored piles of different diameters (80 cm, 150 cm, and 200 cm) and different lengths (between 30-76 m) in two different project site. Settlement analysis of test piles is done by using some of load transfer methods and finite element method. Plaxis 3D which is a three-dimensional finite element program is also used for settlement analysis of the test piles. In this study, firstly bearing capacity of test piles are determined and compared with strain gauge data which is required for settlement analysis. Then, settlement values of the test piles are estimated by using load transfer methods developed in recent years and finite element method. The aim of this study is to show similarities and differences between the results obtained from settlement analysis methods and instrumented pile load tests.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3298823Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 767
 B. H. Fellenius, “Unified design of piled foundations with emphasis of settlement analysis,” in Proc. Contributions in Honor of George G. Gobel, Los Angeles, 2004, pp. 253–275.
 H. G. Poulos, “Pile testing and settlement prediction,” in Proc. GeoCongress 2012, California, 2012, pp. 630-649.
 C. Bohn, A. Lopes and R. Frank, “Development ofaxial pile load transfer curves based on instrumented load tests,” J. Geotech. Geoenviron. Eng., vol. 143, no. 1, pp. 1–15, 2016.
 T. Boonyatee and Q. V. Lai, “A non-linear lod transfer method for determining the settlement of piles under vertical loading,” International J. of Geotechnical Engineering., vol. 6362, pp. 1–12, 2017.
 F. K. Chin, “Estimation of the ultimate load of piles from tests not carried to failure,” in Proc. 2nd S.E. Asian Conf. Soil Eng., Singapore, 1970.
 F. K. Chin, “The inverse slope as a prediction of ultimate bearing capacity of piles,” in Proc. 3rd S.E. Asian Conf. Soil Eng., Hong Kong, 1972.
 H. M. Coyle and L. C. Reese, “Load transfer for axially loaded piles in clay,” Journal of the Soil Mechanics and Foundations Division., vol. 92, no. 2, pp. 1–26, 1966.
 W. G. K. Fleming, “A new method for single pile settlement prediction and analysis,” Geotechnique, vol. 42, no. 3, pp. 411-425, 1992.
 H. Hirayama, “Load-settlement analysis for bored piles using hyperbolic transfer functions,” Soils and Foundations., vol. 30, no. 1, pp. 55-64, 1990.
 C. Y. Lee, “Settlement of pile groups- practical approach,” Journal of Geotechnical Engineering, vol. 119, no. 9, pp. 596-606, 1993.
 M. Randolph and C. Wroth, “Analysis of deformation of vertically loaded piles,” J. Geotechnical Engineering Division, vol. 104, no. 12, pp. 1465-1488, 1978.
 C. V. G. Vallabhan and G. Mustafa, “A new model for the analysis of settlement of drilled piers,” International Journal for Numerical and Analytical Methods in Geomechanics, vol. 20, no. 2, pp. 143-152, 1996.
 Z. Xia and J. Zou, “Simplified approach for settlement analysis of vertically loaded pile,” Journal of Engineering Mechanics, vol. 143, no. 11, 2017.
 Q. Q. Zhang, S. W. Liu, S. Zhang, J. Zhang and K. Wang, “Simplified non-linear approaches for response of a single pile and pile groups considering progressive deformation of pile–soil system,” Soils and Foundations, vol. 56, no. 3, pp. 473-484, 2016.
 Q. Q. Zhang, Z. M. Zhang and J. Y. He, “A simplified approach for settlement analysis of single pile and pile groups considering interaction between identical piles in multilayered soils,” Computers ad Geotechnics, vol. 37, no. 7-8, pp. 969-976, 2010.