![]() ![]() 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. Most of all, total displacement 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 expected 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. Choose the point Assign Joint loads Forces beside moment about global Y fill the blank with +2 KN.m value (see figure 13). 3- Assign moment based on the explanation in the previous figure. Seismic Isolation System, Bridge, Lead Rubber Bearing (LRB), Energy MitigationĪBSTRACT: 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. Now build this simple structural system using SAP: 1- Create the suitable grid system. Computers and Structures Inc., Berkeley.Ī Study on the Seismic Isolation Systems of Bridges with Lead Rubber BearingsĪUTHORS: Woo-Suk Kim, Dong-Joon Ahn, Jong-Kook Lee ![]() CSI (2002) SAP 2000 Analysis Reference Manual.
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