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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 58
Edited by: B.H.V. Topping and B. Kumar
Paper VII.4

Analysis and Preliminary Design of Isolated Bridges Considering Soil-Structure Interaction

J.-P. Pu, F.-M. Ting and H.-C. Wu

Graduate Institute of Civil and Hydraulic Engineering, Feng-Chia University, Taichung, Taiwan

Full Bibliographic Reference for this paper
J.-P. Pu, F.-M. Ting, H.-C. Wu, "Analysis and Preliminary Design of Isolated Bridges Considering Soil-Structure Interaction", in B.H.V. Topping, B. Kumar, (Editors), "Computer Techniques for Civil and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 119-127, 1999. doi:10.4203/ccp.58.7.4
The efficiency of base-isolated bridges and several important parameters are evaluated in this paper. A preliminary design procedure and a set of design charts that can be adopted to select quickly the isolators are suggested. The selection of the isolation system is based mainly on three considerations: 1. The efficiency of the isolation system in the protection of structures from earthquake; 2. The vertical bearing capacity of the isolators; and 3. The constraint of the displacements in the isolation structures. It is shown that the applicability of isolation systems depends on the soil condition, on the characteristics of the structures, and on the frequency of the excitation.

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