Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/74100
Title: Characterization of model uncertainties for drilled shafts under undrained axial loading
Authors: Phoon, K.K. 
Kulhawy, F.H.
Issue Date: 2005
Source: Phoon, K.K.,Kulhawy, F.H. (2005). Characterization of model uncertainties for drilled shafts under undrained axial loading. Geotechnical Special Publication (130-142) : 405-417. ScholarBank@NUS Repository.
Abstract: This invited paper presents a rigorous examination of model statistics for drilled shafts under undrained axial loading. To apply a model factor as an independent random variable on the predictive capacity equation, it is desirable to verify that it is not varying systematically with some underlying factors. The measured and computed capacities appear as the numerator and denominator, respectively, in the standard definition of the model factor and are the most obvious factors to check for such statistical dependencies. The Spearman rank correlation is a simple and useful method to perform this check. Even though the adhesion factor typically is expressed as a function of the undrained shear strength, this approach only is marginally acceptable from a rank correlation perspective. For undrained compression tip resistance, a generalized model factor is recommended because the existing definition produces strong statistical dependencies with the measured and computed alues.
Source Title: Geotechnical Special Publication
URI: http://scholarbank.nus.edu.sg/handle/10635/74100
ISSN: 08950563
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

32
checked on Jan 19, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.