Load-Testing Program to Evaluate Pile-Setup Behavior for Individual Soil Layers and Correlation of Setup with Soil Properties
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Abstract
Six instrumented static-load test piles driven at four different locations along the LA-1 highway alignment in coastal Louisiana provided the opportunity to study the soil-setup behavior in relation to the soil properties. The instrumented piles consisted of six square prestressed-concrete (PSC) test piles of different sizes and different lengths. Both soil boring and piezocone penetration tests (PCPT) were conducted at each test-pile location to characterize the subsurface soil conditions. The testing program consisted of performing dynamic-load tests (DLTs) at predetermined time intervals, followed by one static-load test (SLT) at the end. These piles were instrumented with vibrating-wire sister-bar strain gauges along their length. Case pile-wave analyses were performed on the DLT data to calculate the soil-resistance distributions along test piles. Design parameters such as the adhesion factor and the effective stress coefficient were also backcalculated. The values ranged from 0.68 to 1.78, and the values ranged from 0.11 to 0.32. The load test results showed that the shaft resistances increased significantly with time, while the toe resistances remained almost constant with time for all test piles. The rates of setup parameter for individual soil layers were calculated using the unit shaft resistances. The resulting average values for clayey and sandy soils were 0.36 and 0.16, respectively. The setup parameters of individual soil layers were correlated with soil properties, which showed that the parameter decreases with increasing undrained shear strength () and increases with increasing plasticity index (PI) for clayey soil layers. A nonlinear regression model based on undrained shear strength and plasticity index was developed and proven to be applicable to other sites as well.
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Acknowledgments
This research project is funded by the Louisiana Department of Transportation and Development (State Project No. 736-99-1732) and Louisiana Transportation Research Center (LTRC Project No. 11-2GT). The authors would also like to thank the DOTD geotechnical section for the help and support they provided in this study.
References
Abu-Farsakh, M. (2004). “Evaluation of consolidation characteristics of cohesive soils from piezocone penetration test.”, Louisiana Transportation Research Center, Baton Rouge, LA.
Abu-Farsakh, M. Y., Haque, Md. N., and Chen, Q. (2016). “Field instrumentation and testing to study set-up phenomenon of piles driven into Louisiana clayey soils.”, Louisiana Transportation Research Center, Baton Rouge, LA.
Abu-Farsakh, M. Y., Rosti, F., and Souri, A. (2015). “Evaluating pile installation and subsequent thixotropic and consolidation effects on setup by numerical simulation for full scale pile load tests.” Can. Geotech. J., 52(11), 1734–1746.
ASTM. (2013). “Standard test methods for deep foundations under static axial compressive load.” ASTM D1143/D1143M-07, West Conshohocken, PA.
Axelsson, G. (1998). “Long-term setup of driven piles in sand.” Ph.D. dissertation, Royal Institute of Technology, Stockholm, Sweden.
Basu, P., Prezzi, M., Salgado, R., and Chakraborty, T. (2013). “Shaft resistance and setup factors for piles jacked in clay.” J. Geotech. Geoenviron. Eng., .
Bullock, P. J., Schmertmann, J. H., McVay, M. C., and Townsend, F. C. (2005). “Side shear setup. II: Results from Florida test piles.” J. Geotech. Geoenviron. Eng., 301–310.
Burland, J. B. (1973). “Shaft friction of piles in clay.” Ground Eng., 6(3), 30–42.
Camp, W. M., III, and Parmar, H. S. (1999). “Characterization of pile capacity with time in the Cooper Marl: A study of the applicability of a past approach to predict long time pile capacity.” J. Transp. Res. Rec., 2004, 12–19.
CAPWAP [Computer software]. Pile Dynamics, Cleveland.
Chen, Q., Haque, Md. N., Abu-Farsakh, M., and Fernandez, B. A. (2014). “Field investigation of pile setup in mixed soil.” Geotech. Testing J., 37(2), 268–281.
Chow, F. C., Jardine, R. J., Brucy, F., and Nauroy, J. F. (1998). “Effects of time on capacity of pipe piles in dense marine sand.” J. Geotech. Geoenviron. Eng., 254–264.
Clausen, C. J. F., Aas, P. M., and Karlsrud, K. (2005). “ Bearing capacity of driven piles in sand, the NGI approach.” Proc., Int. Symp. on Frontiers in Offshore Geotechnics, Perth, Australia, 677–681.
Davisson, M. (1972). “High capacity piles.” Proc., Soil Mechanics Lecture Series on Innovations in Foundation Construction, ASCE, Reston, VA, 81–112.
Doherty, P., and Gavin, K. (2013). “Pile aging in cohesive soils.” J. Geotech. Geoenviron. Eng., 1620–1624.
Fellenius, B. H. (2002). “Determining the resistance distribution in piles. Part 1: Notes on shift of no-load reading and residual load.” Geotech. News Mag., 20(2), 35–38.
Fellenius, B. H. (2008). “Effective stress analysis and set-up for shaft capacity of piles in clay.” From research to practice in geotechnical engineering, ASCE, Reston, VA, 384–406.
Fellenius, B. H. (2014). “Discussion of ‘Pile aging in cohesive soils’ by Doherty, P., and Gavin, K.” J. Geotech. Geoenviron. Eng., 1620–1624.
Fellenius, B. H. (2015). “Basics of foundation design.” ⟨www.Fellenius.net⟩.
Fellenius, B. H., Riker, R. E., O’Brien, A. J., and Tracy, G. R. (1989). “Dynamic and static testing in soil exhibiting set-up.” J. Geotech. Eng., 984–1001.
Guang-Yu, Z. (1988). “Wave equation application for piles in soft ground.” Proc., 3rd Int. Conf. on the Application of Stress-Wave Theory to Piles, Canada, 831–836.
Haque, Md. N., Abu-Farsakh, M., Chen, Q., and Zhang, Z. (2014a). “Case study on instrumenting and testing full scale test piles for evaluating setup phenomenon.” Transp. Res. Rec., 2462, 37–47.
Haque, Md. N., Abu-Farsakh, M. Y., and Chen, Q. (2015). “Pile set-up for individual soil layers along instrumented test piles in clayey soil.” Proc., 15th Pan-American Conf. on Soil Mechanics and Geotechnical Engineering (From Fundamentals to Applications in Geotechnics), Buenos Aires, Argentina, 390–397.
Haque, Md. N., Abu-Farsakh, M. Y., Zhang, Z., and Okeil, A. (2016). “Developing a model to estimate pile setup for individual soil layers on the basis of piezocone penetration test data.” Transp. Res. Rec., 2579, 17–31.
Haque, Md. N., Chen, Q., Abu-Farsakh, M., and Tsai, C. (2014b). “Effects of pile size on set-up behavior of cohesive soils.” Proc., Geo-Congress 2014, GeoCharacterization and Modeling for Sustainability, GSP No 234, ASCE, Reston, VA, 1743–1749.
Hunter, A. H., and Davisson, M. T. (1969). “Measurements of pile load transfer.” Proc., Symp. on Performance of Deep Foundations, 106–117.
Karlsrud, K., Clausen, C. J. F., and Aas, P. M. (2005). “Bearing capacity of driven piles in clay, the NGI approach.” Proc., 1st Int. Symp. on Frontiers in Offshore Geotechnics, Taylor & Francis, Perth, Australia, 775–782.
Komurka, V. E., Wagner, A. B., and Edil, T. B. (2003). “A review of pile set-up.” Proc., 51st Annual Geotechnical Engineering Conf., MN, 105–130.
Konard, J. M., and Roy, M. (1987). “Bearing capacity of friction piles in marine clay.” Geotechnique, 37(2), 163–175.
Lim, J. K., and Lehane, B. M. (2014). “Characterisation of the effects of time on the shaft friction of displacement piles in sand.” Geotechnique, 64(6), 476–485.
Lukas, R. G., and Bushell, T. D. (1989). “Contribution of soil freeze to pile capacity.” Proc., Foundation Engineering: Current Principles and Practices, Vol. 2, ASCE, Reston, VA, 991–1001.
McVay, M. C., Schmertmann, J., Townsend, F., and Bullock, P. (1999). “Pile friction freeze: A field investigation study.”, Florida Dept. of Transportation, FL.
Ng, K. W., Roling, M., AbdelSalam, S. S., Suleiman, M. T., and Sritharan, S. (2013a). “Pile setup in cohesive soil. I: Experimental investigation.” J. Geotech. Geoenviron. Eng., 199–209.
Ng, K. W., Suleiman, M. T., and Sritharan, S. (2013b). “Pile setup in cohesive soil. II: Analytical quantifications and design recommendations.” J. Geotech. Geoenviron. Eng., 210–222.
Nordlund, R. L. (1963). “Bearing capacity of piles in cohesionless soils.” J. Soil Mech. Found. Eng., 89(3), 1–35.
Pei, J., and Wang, Y. (1986). “Practical experiences on pile dynamic measurement in Shanghai.” Proc., Int. Conf. on Deep Foundations, Beijing, 2.36–2.41.
Pestana, J. M., Hunt, C. E., and Bray, J. D. (2002). “Soil deformation and excess pore pressure around a closed-ended pile.” J. Geotech. Geoenviron. Eng., 1–12.
Rausche, F., Likins, G., and Hussein, M. H. (2008). “Analysis of post-installation dynamic load test data for capacity evaluation of deep foundations.” Proc., Research in Practice in Geotechnical Engineering (Geo-Congress 2008), GSP No. 180, New Orleans, 312–330.
Schmertmann, J. H. (1991). “The mechanical aging of soils.” J. Geotech. Eng., 1288–1330.
Sellers, J. B. (1995). “Pile load test instrumentation, instrumentation in geotechnical engineering.” Proc., Hong Kong Institute of Civil Engineers, Geotechnical Division, 23–33.
Skov, R., and Denver, H. (1988). “Time dependence of bearing capacity of piles.” Proc., 3rd Int. Conf. on the Application of Stress-Wave Theory to Piles, 879–888.
Svinkin, M. R., Morgano, C. M., and Morvant, M. (1994). “Pile capacity as a function of time in clayey and sandy soils.” Proc., DFI 5th Int. Conf. on Piling and Deep Foundations, Stresa, Italy, 451–456.
Tomlinson, M. (1957). “The adhesion of piles driven in clay.” Proc., 4th Int. Conf. Soil Mechanics, London, 2, 66–71.
Tomlinson, M. (1970). “Some effects of pile driving on skin friction.” Proc., Conf. on Behavior of Piles, ICE, London, 107–114.
Tumay, M. T., Acar, Y. B., and Boggess, R. (1981). “Subsurface investigations with piezocone penetrometer.” ASCE Special Publication on Cone Penetration Testing and Experience, ASCE, Reston, VA, 325–342.
Tumay, M. T., Acar, Y. B., Deseze, E., and Yilmaz, R. (1982). “Soil exploration in soft clays with the quasi-static electric cone penetrometer.” Proc., 2nd European Symp. on Penetration Testing (ESOPT II), Vol. 2, A. A. Balkema, Rotterdam, Netherlands, 915–921.
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©2016 American Society of Civil Engineers.
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Received: Feb 5, 2016
Accepted: Jul 19, 2016
Published online: Oct 19, 2016
Discussion open until: Mar 19, 2017
Published in print: Apr 1, 2017
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