Incremental Analysis of Elastoplastic Beams and Frames Resting on an Elastic Half-Plane
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
In this work, a simple and effective finite element-boundary integral equation (FE-BIE) approach for the static analysis of elastic beams and frames in bilateral frictionless contact with an elastic half-plane is extended to include the case of material nonlinearity. Elastic-perfectly plastic behavior is assumed for the supported structure and in particular for the foundation beam. Potential plastic hinges are placed along structural elements and modeled as nonlinear semirigid connections characterized by a rigid-plastic moment-rotation relationship. Incremental, load-controlled analyses of beams and frames resting on an elastic half-plane with several potential plastic hinges along the structural members are then performed. Numerical examples illustrate the effectiveness of the model in determining the stiffness degradation of the structure for increasing loads, together with ultimate loads and collapse mechanisms.
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Acknowledgments
The present investigation was developed in the framework of the Research Program FAR 2016 of the University of Ferrara. Moreover, the analyses were developed within the activities of the (Italian) University Network of Seismic Engineering Laboratories—ReLUIS in the research program funded by the (Italian) National Civil Protection—Progetto Esecutivo 2014–2016—Research Line Reinforced Concrete Structures and Innovative materials.
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 3, 2016
Accepted: Apr 5, 2017
Published online: Jun 30, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 30, 2017
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