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Geomechanics and Engineering Volume 1, Number 1, March 2009 , pages 17-34 DOI: https://doi.org/10.12989/gae.2009.1.1.017 |
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Reliability analysis and evaluation of LRFD resistance factors for CPT-based design of driven piles |
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Junhwan Lee, Minki Kim and Seung-Hwan Lee
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| Abstract | ||
| There has been growing agreement that geotechnical reliability-based design (RBD) is necessary for establishing more advanced and integrated design system. In this study, resistance factors for LRFD pile design using CPT results were investigated for axially loaded driven piles. In order to address variability in design methodology, different CPT-based methods and load-settlement criteria, popular in practice, were selected and used for evaluation of resistance factors. A total of 32 data sets from 13 test sites were collected from the literature. In order to maintain the statistical consistency of the data sets, the characteristic pile load capacity was introduced in reliability analysis and evaluation of resistance factors. It was found that values of resistance factors considerably differ for different design methods, loadsettlement criteria, and load capacity components. For the total resistance, resistance factors for LCPC method were higher than others, while those for Aoki-Velloso | ||
| Key Words | ||
| LRFD; resistance factor; reliability index; pile load capacity; driven pile; cone penetration test. | ||
| Address | ||
| Junhwan Lee; School of Civil and Environmental Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea Minki Kim; Project Engineer, Kumho Engineering and Construction, Sinmunno 1-ga, Jongno-gu, Seoul 100-061, Korea Seung-Hwan Lee; Department of Mathematics, Illinois Wesleyan University, Bloomington, Il, USA | ||