Practical Soil-Shallow Foundation Model for Nonlinear Structural Analysis

Leblouba, Moussa, Al Toubat, Salah, Rahman, Muhammad and Mugheida, Omer (2016) Practical Soil-Shallow Foundation Model for Nonlinear Structural Analysis. Mathematical Problems in Engineering, 2016. p. 4514152. ISSN 1024-123X

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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.

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