CONCEPTUAL DESIGN OF ISOLATION SYSTEMS FOR BRIDGE STRUCTURES |
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Authors: | GIAN MICHELE CALVI ALBERTO PAVESE |
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Institution: | Dipartimento di Meccanica Strutturale , Universitá degli Studi di Pavia , via Ferrata 1, Pavia, 27100, Italy |
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Abstract: | Abstract In the first part of this paper the objectives of an isolation system for a bridge structure are discussed, in relation to modelling options and modification of the traditional capacity design principles. A displacement-based design approach is then presented, using a linear equivalent single degree-of-freedom model. The preliminary design of an isolation system for existing bridges is based on the definition of a “structure regularity” which allows the estimation of whether the response of the real structure will be similar to that predicted in the preliminary design phase. The efficiency of the approach is shown in designing the isolation system for a highly irregular bridge. |
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Keywords: | bridge isolation displacement-based design regularity |
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