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Mathematical Problems in Engineering
Volume 2016 (2016), Article ID 4514152, 10 pages
http://dx.doi.org/10.1155/2016/4514152
Research Article

Practical Soil-Shallow Foundation Model for Nonlinear Structural Analysis

1Department of Civil & Environmental Engineering, University of Sharjah, P.O. Box 27272, Sharjah, UAE
2Department of Civil & Construction Engineering, Faculty of Engineering and Science, Curtin University Sarawak, CDT 250, 98009 Miri, Sarawak, Malaysia
3Department of Civil Engineering, Abu Dhabi University, P.O. Box 59911, Abu Dhabi, UAE

Received 13 March 2016; Accepted 15 June 2016

Academic Editor: Manuel Pastor

Copyright © 2016 Moussa Leblouba et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Soil-shallow foundation interaction models that are incorporated into most structural analysis programs generally lack accuracy and efficiency or neglect some aspects of foundation behavior. For instance, soil-shallow foundation systems have been observed to show both small and large loops under increasing amplitude load reversals. This paper presents a practical macroelement model for soil-shallow foundation system and its stability under simultaneous horizontal and vertical loads. The model comprises three spring elements: nonlinear horizontal, nonlinear rotational, and linear vertical springs. The proposed macroelement model was verified using experimental test results from large-scale model foundations subjected to small and large cyclic loading cases.