A Study on the Seismic Isolation Systems of Bridges with Lead Rubber Bearings

• 作者: Dong-Joon Ahn Jong-Kook Lee Woo-Suk Kim
• 来源期刊: 土木工程期刊(英文)
• 学科: 医学
• 关键词: SEISMIC ISOLATION System Bridge Lead Rubber BEARING (LRB) Energy MITIGATION
• 年，卷（期）: 2014,（4）
• 页码范围: 361-372
• 页数: 12页
• 分类号: R73

摘要

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. 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. Design forces, displacements, and drifts are given distinctive consideration in accordance with Caltrans Seismic Design Criteria (2004). Most of all, total displacement on design for all LRBs case is reduced comparing with combined lead-rubber and elastomeric bearing system . Therefore, this represents substantial reduction in cost because of reduction of expansion joint. This presents a summary of analysis and design of seismic isolation system by energy mitigation with LRB on bridges.