作　　者： ; ;

机构地区： 中国海洋大学工程学院

出　　处： 《地震工程与工程振动》 2007年第6期17-23,共7页

摘　　要： 以33次地震中的地表地震动记录为数据基础,考虑场地条件、震级和距离的影响,分别对竖向地震动的加速度规准化反应谱和双规准化反应谱进行了研究。结果表明,规准反应谱明显受到场地条件、震级和震中距的影响,不同场地、距离和震级的平均规准反应谱之间差别显著;相比较而言,不依赖于场地、距离和震级的平均双规准反应谱之间却表现出良好的规律性和一致性。双规准反应谱的统一特性可以为竖向地震动设计谱的预测提供参考依据。 Based on the statistical analysis of 531 vertical ground motions recorded from 33 worldwide earthquakes, the engineering characteristics of normalized response spectra （NRS） and hi-normalized response spectra （BNRS） for vertical ground motions are examined considering the effects of soil condition, distance and earthquake magnitude. This study concludes： acceleration NRS is strongly dependent on soil condition, source to site distance and magnitude, while the BNRS is much less dependent on these factors. Hence, the BNRS has greater consistency among all vertical motions than the conventional NRS. It implies that the BNRS can be used not only in revealing the characteristics of strong ground motions, but also in estimating the vertical seismic design spectrum for structures.

关 键 词： 竖向地震动 规准化反应谱 双规准化反应谱 设计谱

领　　域： [天文地球] [天文地球] [天文地球]