Abstract
Interrelationships of seven representative end-bearing resistance prediction models normalized by an interpreted end bearing resistance were compared. A database containing the results of field load tests of drilled shafts socketed into soft rocks was established for this study. Soft rocks are defined as rocks with unconfined compressive strengths of less than 5 MPa. Results of the comparative analysis showed that normalized end bearing resistances of various prediction models range from 0.55 to 1.02. Design recommendations regarding lower and upper bounds of normalized resistances were provided. Mean displacements for predicted resistances ranged from 21.98 mm to 50.56 mm. Furthermore, a normalized end bearing resistance with displacement curve was developed on the basis of the analysis results to provide a graphical representation of the location of each prediction model in the established curve. Statistical analysis was also applied to compare the results of the prediction models and interpreted values.
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References
AASHTO: Standard specifications for highway bridges. 16th edn. American Association of State Highway and Transportation Officials, Washington, D.C. (1996).
ARGEMA: Design guides for offshore structures: offshore pile design. Edited by P.L. Tirant. Editions Technip, Paris, France (1992).
4. Chen, Y.J., Fang, Y.C.: Critical evaluation of compression interpretation criteria for drilled shafts. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 135(8), 1056–1069 (2009).
5. Chen, Y.J., Hsiao, C.C., Topacio, A.: Side resistance of drilled shafts socketed into rocks for serviceability and ultimate limit states. Advanced in Technology Innovation 5(3), 156–165 (2019).
Chu T.H.: Evaluation of interpretation criteria and capacity for drilled shafts in gravelly soils under axial and lateral loading. Master Thesis, Department of Civil Engineering, Chung Yuan Christian University, Taiwan (2009).
Crapps, D.K., Schmertmann, J.H.: Compression top load reaching shaft bottom–theory versus tests. Geotechnical Special Publication No. 116. Edited by M.W. O’Neill and F.C. Townsend. Geo-Institute, American Society of Civil Engineers, Reston, 2, 1533–1549 (2002).
8. Canadian Geotechnical Society: Canadian foundation engineering manual. 2nd edn. Canadian Geotechnical Society, Toronto, Ontario (1985).
Coates, D.F.: Rock mechanics principles. Energy Mines and Resources. Monograph 874, Ottawa, Ontario (1967).
Hirany, A., Kulhawy, F.H.: Interpretation of load tests on drilled shafts. I: axial compression. Foundation engineering: current principles and practices, American Society of Civil Engineers, New York, 1132–1149 (1989).
Hirany, A., Kulhawy, F.H.: On the interpretation of drilled foundation load test results. Deep foundations. GSP 116. Edited by M.W. O’Neill and F.C. Townsend. American Society of Civil Engineers, Reston, 1018–1028 (2002).
2. Hsiao, C.C., Topacio, A., Chen, Y.J.: Evaluation of side resistance for drilled shafts in rock sections. Geomechanics and Engineering, 21(6), 503–511 (2020).
3. Rowe, R.K., Armitage, H.H.: A design method for drilled piers in soft rock. Canadian Geotechnical Journal, 24(1), 126–142 (1987).
4. Teng, W.C. Foundation design. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, USA (1962).
Turner, J.: Rock-socketed shafts for highway structure foundations: a synthesis of highway practice. NCHRP Synthesis 360. National Cooperative Highway Research Program (NCHRP), Transportation Research Board, Washington, D.C. (2006).
Vipulanandan, C., Hussain, A., Usluogulari, O.: Parametric study of open core-hole on the behavior of drilled shafts socketed in soft rock. In: New Peaks in Geotechnics, Geo-Denver 2007, Contemporary Issues in Deep Foundations, 1–10 (2007).
7. Zhang, L.: Predicting the end bearing capacity of rock socketed shafts. Canadian Geotechnical Journal, 47, 1071–1084 (2010).
8. Zhang, L., Einstein, H.H.: End bearing resistance of drilled shafts in rock. Journal of Geotechnical and Geoenvironmental Engineering, 124(7), 574–584 (1998).
Zhang, L., Xu, J.: Axial load transfer behavior of rock socketed shafts. Geotechnical Special Publication No. 185. Edited by M. Iskander, D.F. Laefer, and M.H. Hussein. American Society for Civil Engineers, Reston, Va. 175–182 (2009).
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This study was supported by the Ministry of Science and Technology (MOST), Taiwan, under Contract No: MOST 109-2221-E-033-007.
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Topacio, A., Chen, YJ., Marcos, M.C. (2022). Comparative Analysis of Predicted End Bearing Resistances of Drilled Shafts in Soft Rocks. In: Ha-Minh, C., Tang, A.M., Bui, T.Q., Vu, X.H., Huynh, D.V.K. (eds) CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure. Lecture Notes in Civil Engineering, vol 203. Springer, Singapore. https://doi.org/10.1007/978-981-16-7160-9_10
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