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A Method for Predicting Base Resistance of Drilled Shafts in Disturbed Rock Mass
Conventional methods for estimating the base resistance of rock-socketed drilled shafts simply use the unconfined compressive strength of intact rock, although the base resistance also depends on in-situ rock mass characteristics. In this study, an improved method for determining the base resistance of drilled shafts socketed in disturbed rock masses is presented. The method is based on a finite element limit analysis with the Hoek–Brown (HB) failure criterion that is applicable to both the intact and jointed rocks. The method also emphasizes the importance of disturbance and unit weight of the rock mass. A database of base resistance from load tests with available rock properties are compiled from the literature, which is used for method validation. Comparison to the measured rock-socket base resistance indicates that the proposed method produces satisfactory predictions.
A Method for Predicting Base Resistance of Drilled Shafts in Disturbed Rock Mass
Conventional methods for estimating the base resistance of rock-socketed drilled shafts simply use the unconfined compressive strength of intact rock, although the base resistance also depends on in-situ rock mass characteristics. In this study, an improved method for determining the base resistance of drilled shafts socketed in disturbed rock masses is presented. The method is based on a finite element limit analysis with the Hoek–Brown (HB) failure criterion that is applicable to both the intact and jointed rocks. The method also emphasizes the importance of disturbance and unit weight of the rock mass. A database of base resistance from load tests with available rock properties are compiled from the literature, which is used for method validation. Comparison to the measured rock-socket base resistance indicates that the proposed method produces satisfactory predictions.
A Method for Predicting Base Resistance of Drilled Shafts in Disturbed Rock Mass
Geotech Geol Eng
Kim, Byeong Geon (author) / Lim, Chang Hee (author) / Lee, Joon Kyu (author)
2025-02-01
Article (Journal)
Electronic Resource
English
Base resistance , Drilled shafts , Rock mass , Hoek–Brown criterion , Finite element limit analysis , Load test database Engineering , Resources Engineering and Extractive Metallurgy , Earth Sciences , Geotechnical Engineering & Applied Earth Sciences , Hydrogeology , Terrestrial Pollution , Waste Management/Waste Technology , Civil Engineering , Earth and Environmental Science
A Method for Predicting Base Resistance of Drilled Shafts in Disturbed Rock Mass
| Springer Verlag | 2025
Base Resistance of Drilled Shafts in Fractured Rock
| ASCE | 2010
Design of Rock-Socketed Drilled Shafts
| NTIS | 2006
Drilled shafts in rock : analysis and design
| TIBKAT | 2004