Multiple Resistance Factor Design for Shallow Transmission Line Structure Foundations
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VIEW THE ORIGINAL ARTICLEPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 129, Issue 9
Abstract
This paper presents the development of simplified reliability-based design (RBD) equations that are suitable for spread foundations subjected to uplift. Emphasis is placed on the loading and foundation characteristics relevant to the electric utility industry. A general reliability calibration procedure is used to derive robust resistance/deformation factors for load and resistance factor design (LRFD) and multiple resistance factor design (MRFD) formats. Two target reliability indices of 3.2 and 2.6 are proposed based on an extensive study of existing designs for ultimate and serviceability limit state, respectively. The main advantage of using these RBD factors is that a known level of reliability can be consistently achieved over a wide range of design conditions. Simple design calculations using the MRFD format are shown to demonstrate their ability to account for parametric uncertainties in a rational manner.
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Information & Authors
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 129 • Issue 9 • September 2003
Pages: 807 - 818
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Nov 29, 2001
Accepted: Nov 25, 2002
Published online: Aug 15, 2003
Published in print: Sep 2003
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