CAJ | 학술논문

基于希尔伯特变换的非平稳地震动模拟方法能够生成一系列地震动样本，具有与给定天然地震动相似的非平稳特征。该方法在模拟天然地震动时域波形的形态和能量的时频分布方面，效果非常显著且已得到验证。本文以理想单自由度体系弹塑性地震反应为基础，深入验证该方法在模拟天然地震动对结构影响效应方面的效果。研究结果表明，该方法能够较好地模拟天然地震动的工程特性，其生成的地震动样本的峰值特性及其引起的结构弹塑性地震响应具有与天然地震动相似的特征。
기우희이백특변환적비평은지진동모의방법능구생성일계렬지진동양본，구유여급정천연지진동상사적비평은특정。해방법재모의천연지진동시역파형적형태화능량적시빈분포방면，효과비상현저차이득도험증。본문이이상단자유도체계탄소성지진반응위기출，심입험증해방법재모의천연지진동대결구영향효응방면적효과。연구결과표명，해방법능구교호지모의천연지진동적공정특성，기생성적지진동양본적봉치특성급기인기적결구탄소성지진향응구유여천연지진동상사적특정。
The non-stationary ground motion simulation method based on Hil-bert transform can generate a series of artificial ground motion samples that pos-sess the non-stationary characteristics similar to the given natural ground mo-tion.The effectiveness of this method in simulating the time-domain waveform features and the time-frequency distribution of energy of the natural ground mo-tion has been validated.In this paper,based on the elastic-plastic seismic re-sponses of ideal single-degree-of-freedom system,the effectiveness of this meth-od in simulating the impacts of the natural ground motion on structures are vali-dated.The results show that,the method can simulate well the engineering properties of natural ground motions,and the structural elastic-plastic seismic responses evoked by the ground motion samples generated by this method have the similar characteristics to the responses caused by natural ground motion.