Experimental investigation on interaction between plastic hinge development and foundation uplift

Abstract : Previous studies have shown that footing uplift can activate a rigid body rotation, and thus reduce the plastic hinge development in structures. Development of a plastic hinge will limit the inertial force which may lead to uplift. Therefore, determination of the bending moment when a plastic hinge develops and the structure uplifts is a challenge. Because of this intrinsic difficulty the inter-relationship between plastic hinge development and structural uplift is seldom investigated. In this paper results of shake table tests on a single-degree-of-freedom model with concurrent plastic hinge development and footing uplift will be presented and discussed. An artificial plastic hinge with rotational slippage is introduced to simulate the plastic deformation of the structure. The model, founded on a rigid base, is subjected to a simulated ground motion based on NZS 1170.5 design spectra. Different ratios of the moment to initiate uplift to that to initiate slippage moment are adjusted. The results show that the moment to initiate plastic hinge development will be similar to that to initiate uplift if the two effects occur concurrently. After discussion on the effect of plastic hinge development and uplift on footing response, structural damage and induced vibrations, recommendations on design with consideration of the slippage-uplift interaction is also provided.
Type de document :
Communication dans un congrès
Cunha, A and Caetano, E and Ribeiro, P and Muller, G. EURODYN 2014: IX INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS, 2014, Unknown, Unknown Region. pp.3791-3796, 2014, EURODYN-International Conference on Structural Dynamics
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https://hal.archives-ouvertes.fr/hal-01611620
Contributeur : Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Soumis le : vendredi 6 octobre 2017 - 10:59:00
Dernière modification le : vendredi 10 novembre 2017 - 11:06:04

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  • HAL Id : hal-01611620, version 1

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Yuanzhi Chen, Pierrick Matheaud, Tam Larkin, Nawawi Chouw. Experimental investigation on interaction between plastic hinge development and foundation uplift. Cunha, A and Caetano, E and Ribeiro, P and Muller, G. EURODYN 2014: IX INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS, 2014, Unknown, Unknown Region. pp.3791-3796, 2014, EURODYN-International Conference on Structural Dynamics. 〈hal-01611620〉

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