A p-y curve method for defermining the horizontal bearing capacity of single pile based on CPTU test and its application
LI Hongjiang1，2，LIU Songyu1，2，TONG Liyuan1，2
(1. Institute of Geotechnical Engineering，Southeast University，Nanjing，Jiangsu 210096，China；2. Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety，Southeast University，Nanjing，Jiangsu 210096，China)
Abstract：Piezocone penetration test(CPTU) has advantages in directly providing the most original soil parameters and reflecting in detail the nonlinear variation of deformation with depth. The relationships between the parameters of piezocone profiles and the parameters of p-y curve were established and the p-y curve method using the CPTU data for determining the horizontal bearing capacity of single pile was proposed. The method was verified by comparison with the in-situ pile data from Jingjiang，Suqian and Kunshan sites. Results indicate that the p-y curve method based on CPTU can accurately reflect soil resistance development characteristics，which is a highly efficient and rapid method for determining the horizontal bearing capacity of pile foundation.
李洪江1，2，刘松玉1，2，童立元1，2. 基于CPTU测试p-y曲线法及其在桩基水平承载中的应用[J]. 岩石力学与工程学报, 2017, 36(2): 513-520.
LI Hongjiang1，2，LIU Songyu1，2，TONG Liyuan1，2. A p-y curve method for defermining the horizontal bearing capacity of single pile based on CPTU test and its application. , 2017, 36(2): 513-520.
[1] 刘松玉，蔡正银. 土工测试技术发展综述[J]. 土木工程学报，2012，45(3)：151–165.(LIU Songyu，CAI Zhengyin. Review of the geotechnical testing[J]. China Civil Engineering Journal，2012，45(3)：151–165.(in Chinese))
[2] 蔡国军，刘松玉，ANAND J P，等. 基于CPTU测试的桩基承载力可靠性分析[J]. 岩土工程学报，2011，33(3)：404–412.(CAI Guojun，LIU Songyu，ANAND J P，et al. Reliability assessment of bearing capacity of pile foundation based on CPTU data[J]. Chinese Journal of Geotechnical Engineering，2011，33(3)：404–412.(in Chinese))
[3] SCHNAID F，HOULSBY G T. An assessment of chamber size effects in the calibration of in situ tests in sand[J]. Geotechnique，1991，41(3)：437–445.
[4] LEE J，KIM M，KYUNG D. Estimation of lateral load capacity of rigid short piles in sands using CPT results[J]. Journal of Geotechnical and Geoenvironmental Engineering，2009，136：48–56.
[5] LEE J，PAIK K，KIM D，et al. Estimation of ultimate lateral load capacity of piles in sands using calibration chamber tests[J]. ASTM Geotechnical Testing Journal，2012，35(4)：563–574.
[6] ANDERSON J B，TOWNSEND F C，GRAJALES B. Case history evaluation of laterally loaded piles[J]. Journal of Geotechnical and Geoenvironmental Engineering，2003，129(3)：187–196.
[7] ZHANG L Y，CHEN Z C. A new p-y curve construction method in cohesive soils[J]. Journal of the Ocean Engineering，1992，10(4)：50–58.
[8] KONRAD J M，LAW K T. Undrained shear strength from Piezocone tests[J]. Canadian Geotechnical Journal，1987，24(3)：392–405.
[9] Matlock H. Correlation for design of laterally loaded piles in soft clay[J]. Offshore Technology Conference，1970，(1)：577–594.
[10] KONDNER R L. Hyperbolic stress-strain response：Cohesive soils[J]. Journal of Soil Mechanics and Foundation Division，1963，89(1)：115–144.
[11] KIM B T，KIM N K，LEE W J，et al. Experimental load-transfer curves of laterally loaded piles in Nak-Dong River sand[J]. Journal of Geotechnical and Geoenvironmental Engineering，2004，130(4)：416–425.
[12] LUNNE T，ROBERTSON P K，POWELL J J M. Cone Penetration Testing in Geotechnical Practice[M]. London：Taylor and Francis Group，1997：63–66.
[13] LEE J，SEO K，KANG B，et al. Application of effective cone factor for strength characterization of saturated clays[C]// Proceedings of GeoFlorida. [S.l.]：ASCE，2010：1 029–1 036.
[14] VESIC A S. Expansion of cavities in infinite soil mass[J]. Journal of Soil Mechanics and Foundations Division，1972，98(3)：265–290.
[15] GABR M A，LUNNE T，POWELL J J. P-y analysis of laterally loaded piles in clay using DMT[J]. Journal of Geotechnical Engineering，1994，120(5)：816–837.
[16] EBRAHIMIAN B，NAZARI A，PASHA A Y. Evaluating ε50 for lateral load-displacement behavior of piles in clay[J]. Ocean Engineering，2015，96：149–160.
[17] YAN L I，BYRNE P M. Lateral pile response to monotonie pile head loading[J]. Canadian Geotechnical Journal，1992，29(6)：955–970.
2017, Vol. 36 
