减隔震桥梁设计方法及抗震性能研究综述

Review on Design Methods and Seismic Performances of Seismically Isolated Bridges

摘要:

桥梁作为交通系统中的生命线工程，其抗震性能问题尤为重要。桥梁减隔震技术主要通过减隔震装置来降低结构的地震损伤，目前已发展成为提高强震区桥梁抗震能力的重要措施。为促进减隔震技术在中国桥梁工程领域的进一步发展，首先总结减隔震桥梁的设计方法，归纳其地震反应和震害情况，对采用不同减隔震装置桥梁的非线性动力性能、减隔震效果、地震随机响应、易损性及性能优化方法等研究情况进行梳理；其次，概述减隔震技术在斜交桥、曲线桥及铁路桥梁中的应用情况与研究进展，并介绍新型韧性抗震设计理念在桥梁工程领域中的应用情况和发展前景；最后，总结减隔震桥梁的试验研究情况，指出目前减隔震桥梁研究中的不足和发展趋势。

Abstract:

As a lifeline project in transportation systems, the seismic performance of bridges is particularly important. Seismic isolation technology is mainly used to reduce structural seismic damages through seismic isolation devices, and it has become an important measure to improve the seismic capacity of bridges in strong earthquake areas. To promote the further development of seismic isolation technology in the field of bridge engineering in China, first, the design methods of seismic isolation bridges are summarized; the seismic response and damage of seismic isolation bridges are generalized; and the studies on the nonlinear dynamic performance, seismic isolation effect, seismic random response, vulnerability, and performance optimization methods of bridges with different seismic isolation devices are examined. Second, the application and research progress of seismic isolation technology in skewed bridges, curved bridges, and railway bridges are outlined. According to the relevant research results of the seismic performance of bridges, the application and development prospects of the new post-earthquake resilience design concept in the field of bridge engineering are introduced. Finally, the experimental research on the seismic isolation bridge is summarized, and the shortages and development tendencies of existing seismically isolated bridges are pointed out.