位移设计谱是基于位移的抗震设计方法中确定结构地震位移需求的重要途径。我国建筑抗震设计规范中尚未有关于位移设计谱的内容。鉴于此，本项目拟开展位移设计谱的研究工作。可靠的地震动数据处理方法是保证位移反应谱计算结果有效的重要前提。在前人的研究中常通过人工肉眼观察确定滤波截止频率，存在明显的主观性误差。为解决该问题，本项目拟通过小波多分辨率分析方法分析地震动长周期噪声，提出一种定量计算滤波截止频率的方法。鉴于脉冲型地震动的特殊性，本项目拟分别给出普通类型地震动和脉冲型地震动的位移设计谱。在普通类型地震动的研究中，本项目拟通过语音识别算法筛选与我国规范相匹配的地震动，使分析结果更便于应用于我国规范。在脉冲型地震动的研究中，本项目拟提出一种能基于脉冲特性调整谱形态的新型位移设计谱方法。本项目的研究工作能为位移设计谱方法的理论研究提供新思路，也能为我国规范增加位移设计谱的相关内容提供方法参考和理论依据。

Displacement design spectrum is an important tool of determining the displacement seismic demand of structures for the displacement-based seismic design method. The current Chinese code (Chinese Seismic Design Code for Buildings) still does not have the provisions about the displacement design spectrum. In view of this, this project intends to carry out the research of the displacement design spectrum. Reliable ground motion processing method is extremely important to the accuracy of the displacement response spectrum. In previous studies, visual inspection was used to determine the filtering cut-off frequency in which subjective errors are significant. To solve the problem, by using the wavelet multi-resolution analysis method to analyze the long-period noise of ground motions, this project intends to propose a quantitative merthod of determining the filtering cut-off frequency. In view of the particularity of the pulse-like ground motions, this project gives the displacement design spectrum for the ordinary ground motions and that for the pulse-like ground motions respectively. For the ordinary ground motions, this project adopts speech recognition algorithm to select the ground motions that match with the Chinese code. Then, the analysis results can be easily applied in the Chinese code. For pulse-like ground motions, this project intends to propose a new method in which the spectral shape can be changed according to the pulse characteristics. The research work of this project could provide new approaches for the theoretical research of the displacement design spectra and could provide reference methods and theory basis for the Chinese code to add the relevant content about the displacement design spectra.