桥梁抗震的研究进展

San Fernando地震、唐山大地震、Loma Prieta地震、Northridge地震、阪神地震、集集地震等破坏性地震使交通系统严重毁坏,地震造成的交通中断直接影响着救灾工作的进行,扩大了次生灾害损失,使生命财产遭受巨大损失。近30多年来,地震灾害的沉痛教训不断地警示着世人,使人们对桥梁的抗震研究工作逐渐受到重视,桥梁抗震理论及技术水平日渐提高。简要叙述了桥梁抗震研究中概念、分析方法、设计方法、抗震设计规范、减震加固技术的历史概况和现状,并展望了今后桥梁抗震研究的发展趋势。

RESEARCH PROGRESS ON ASEISMIC DESIGN OF BRIDGES

San Fernando Earthquake, Tangshan Earthquake, Loma Prieta Earthquake, Northridge Earthquake, Kobe Earthquake and Chi-Chi Earthquake etc. destroyed the transportation system seriously. The interrupted transportation induced by earthquake will affect salvation, enlarge loss of parasitic infestation. In recent 30 years, lessons of earthquake damage have taught us to make the research on aseismic design for bridges to be recognized gradually. Consequently, the methodology and technology about aseismic design are improved. The concept and method for analysis and design, code for aseismic design and technology for reducing seismic response and retrofitting are developed. At this end, the history, state-of-art and future of this research field are discussed.