多点输入下大跨结构反应谱分析方法研究进展

在大跨度结构的抗震研究领域,多点输入反应谱方法因其形式简洁、物理意义明确、应用方便等优点而获得了广泛重视和迅速发展,并已在一些重大工程项目的抗震分析中得到了应用。本文首先详细阐述了近年来国内外多点输入反应谱分析方法的研究现状;然后介绍了多点输入反应谱法的应用情况,包括基于该方法进行的大跨度结构地震反应分析和抗震可靠度分析;最后,提出了今后研究中一些需要进一步解决的问题。

Advance in research on response spectrum method for seismic analysis of long-span structures

In the field of seismic research on long-span structures,multi-support response spectrum method has got much attention and rapid development due to its attractive characteristics such as terse form,explicit physical meaning as well as convenient application.Moreover,this method has also been used in the seismic analysis of some critical engineering projects.In this paper,the research developments in multi-support response spectrum method at home and abroad are firstly presented in detail,and then the application status of the method are provided,including seismic response analysis and seismic reliability analysis of long-span structures based on the method.Finally,some problems needing further investigation are proposed.