【摘要】 对空间网格结构抗震分析方法的研究现状和存在的关键问题进行了分析。总结空间结构的动力分析方法,指出了应用传统的反应谱法计算结构地震反应时振型截取的误差及概念上的误区,并提出了相应的解决方案;综合工程实践和当前的研究现状,对各种阻尼比的取法进行总结,并阐明了其中存在的问题;评述了结构分析中调整所输入地震波时应注意的要点及结构多维多点输入的研究现状;总结当前网格结构动力稳定问题的研究进展,指出网格结构和多高层结构性能化抗震设计研究内容的差异及研究现状。更多还原

【Abstract】 Current research status and present issues of seismic analysis of spatial lattice structures are concluded in this paper.The dynamic analysis methods of spatial lattice structures are summarized firstly,the misunderstandings of mode truncation using in the mode superposition method are pointed out,and the corresponding solutions are put forward.Based on practical projects and current research results,several methods for determining the damp ratio are compared and concluded,and the underlying problems are revealed.The key points for adjusting earthquake waves for input and current research status about multi-dimension or multi-support input are investigated.Recent progresses in the research of structural dynamic stability of spatial lattice structures are summed up.The differences of the performance seismic design between the spatial grid structures and the multi-story structures are also concluded.更多还原