![]() ![]() The geometry of the bridge, section properties and foundation properties are assumed to be the same in the original bridge in the FHWA example (2000). The two intermediate bents consist of two round columns with a crossbeam on top. The bridge is a continuous, three-span, cast-in-place concrete box girder structure with a 30-degree skew. 4, prepared by Berger/Abam Engineers (1996). The bridge was used as an example of bridge design without an isolation system in the Federal Highway Administration (FHWA) Seismic Design Course, Design Example No. In this research, a bridge was selected to demonstrate the application of analysis and bearing design procedures for seismic isolation system. LRB is a novel apparatus based on the combination of laminated layers rubber bearing using lead plugs (Constantinou, et al. Among various seismic isolation systems, lead-rubber bearing (LRB) which has innovative mechanism can lead to increased effective stiffness and is accommodating force in reinforced concrete (RC) structures. Seismic isolation systems are the separating of structures (such as bridge, building, railway, road, airport, harbor, dam, and tunnel etc.) from ground motions generated by earthquakes which could induce damage to the structures. Seismic Isolation System, Bridge, Lead Rubber Bearing (LRB), Energy Mitigation This presents a summary of analysis and design of seismic isolation system by energy mitigation with LRB on bridges. Therefore, this represents substantial reduction in cost because of reduction of expansion joint. On design for all LRBs case is reduced comparing with combined lead-rubber and elastomeric bearing system ![]() Design forces, displacements, and drifts are given distinctive consideration in accordance with Caltrans Seismic Design Criteria (2004). It is ex- pected that example is developed for all Lead-Rubber Bearing (LRB) seismic isolation system on piers and abutments which placed in between super-structure and sub-structure. This study consists of the development and presentation of example of seismic isolation system analysis and design for a continuous, 3-span, cast-in-place concrete box girder bridge. ![]() Received 12 September 2014 revised 8 October 2014 accepted 28 October 2014 This work is licensed under the Creative Commons Attribution International License (CC BY). School of Architecture, Kumoh National Institute of Technology, Gumi, Republic of KoreaĮmail: * © 2014 by authors and Scientific Research Publishing Inc. ![]()
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