【摘要】 增量动力分析是目前基于性能的地震工程中最具有发展前景的方法之一。增量动力分析结果通过地震动强度参数与工程需求参数关系表示,地震动强度参数是影响增量动力分析方法评估结果的关键因素。从地震动强度参数的性质出发,在总结近年来标量型和向量型地震动强度参数研究现状和存在问题的基础上,指出基于反应谱谱形的地震动强度参数在有效性方面具有优势,仍为今后研究工作的主流方向。向量型地震动强度参数可提供更多信息,充分性、有效性优于标量型地震动强度参数,将是未来的发展趋势。基于多向地震动输入的地震动强度参数更能符合工程需求,也将成为研究的重点。更多还原

【Abstract】 Incremental dynamic analysis( IDA) is a useful method in performance-based earthquake engineering. Different intensity measures( IMs) including scalar and vector-valued IMs that can lead to various results from IDA method. In this paper,properties of IMs are discussed first. Then state of the art and existing problems of IMs are summarized. It is indicated that one of the trends of IMs will still be the spectra shapebased IMs which have advantages in efficiency. Vector-valued IMs can provide with better information and are more efficient and sufficient than scalar IMs. IMs obtain from multi-direction earthquake inputs are closer to practice. Both of those IMs should be studied in the future.更多还原