Use of Plastic Hinge Model in Nonlinear Pushover Analysis of a Pile
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 135, Issue 9
Abstract
The capacity of a pile-soil system can be obtained by pushover analysis using the beam-on-nonlinear-Winkler foundation model. When the pile section enters the plastic state, the plastic hinge method is usually adopted to model its postyielding flexural behavior. The propagation of the plastic zone in a pile can be traced using a series of plastic hinges distributed along the pile that is embedded in the soil. This study proposes a proper model for arranging the distributed plastic hinges along the depths of the pile that are prone to yielding. A modified definition of plastic curvature is proposed herein in order to correctly simulate the nonlinear flexural behavior of a pile. Examples are presented to show the effectiveness of the proposed model.
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Acknowledgments
The writers thank the National Science Council of Taiwan for financially supporting (Grant No. NSCTNSC 94-2211-E-002-068). The support of the National Center for Research on Earthquake Engineering, Taiwan, is also appreciated.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 135 • Issue 9 • September 2009
Pages: 1341 - 1346
Copyright
© 2009 ASCE.
History
Received: Mar 19, 2008
Accepted: Dec 31, 2008
Published online: Aug 14, 2009
Published in print: Sep 2009
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