| 绝对和相对输入能量谱对比及延性系数的影响研究 |
| |
| 引用本文： | 公茂盛,谢礼立.绝对和相对输入能量谱对比及延性系数的影响研究[J].地震学报,2005,27(6):666-676. |
| |
| 作者姓名： | 公茂盛 谢礼立 |
| |
| 作者单位： | 中国哈尔滨,150080,中国地震局工程力学研究所;中国哈尔滨,150080,中国地震局工程力学研究所;中国哈尔滨,150090,哈尔滨工业大学 |
| |
| 基金项目： | 国家自然科学基金，科技部社会公益研究项目 |
| |
| 摘 要： | 利用266条强震记录，在研究绝对输入能量谱和相对输入能量谱衰减规律的基础上，对由衰减关系所确立的两种输入能量谱进行对比分析，讨论了延性系数对这两种输入能量谱的影响. 研究发现，在弹性情况下，两种输入能量谱在周期0.5~1.0 s范围内相差不大； 在非弹性情况下 两种输入能量谱在周期0.5 s处相差不大. 周期较小时，绝对输入能量谱要大于相对输入能量谱；周期较大时，绝对输入能量谱小于相对输入能量谱. 延性系数对这两种输入能量谱影响均比较大， 对绝对输入能量谱而言，周期小于0.3 s时，随着延性系数的增大， 能量谱升高；周期大于0.3 s时，随着延性系数的增大能量谱降低. 不同延性系数的绝对输入能量谱在分界点0.3 s左右相等. 相对输入能量谱受延性系数影响与绝对输入能量谱相似， 但分界点在0.5 s左右. 与绝对输入能量谱相比， 相对输入能量谱在短周期段受延性系数的影响较大， 特别是当场地较软时更为明显.
|
| 关 键 词： | 输入能量谱 地震动 衰减规律 延性系数 两步回归法 |
| 文章编号： | 0253-3782(2005)06-0666-11 |
| 修稿时间： | 2004年8月17日 |
STUDY ON COMPARISON BETWEEN ABSOLUTE AND RELATIVE INPUT ENERGY SPECTRA AND EFFECTS OF DUCTILITY FACTOR |
| |
| Gong Maosheng,Xie Lili.STUDY ON COMPARISON BETWEEN ABSOLUTE AND RELATIVE INPUT ENERGY SPECTRA AND EFFECTS OF DUCTILITY FACTOR[J].Acta Seismologica Sinica,2005,27(6):666-676. |
| |
| Authors: | Gong Maosheng Xie Lili |
| |
| Institution: | Gong Maoshcng Xie Lili Institute of Engineering Mechanics . China Earthquake Administration . Harbin 150080. China Harbin Institute of Technology . Harbin 150090. China |
| |
| Abstract: | Based on 266 strong ground motion records, an attenuation relationship was developed for both absolute and relative input energy spectra. The comparison of the two kinds of input energy spectra constructed from the attenuation relationship was made in this paper. The results show that there is little difference between the absolute input energy spectra and relative ones at the periods of 0. 5-1.0 s for elastic systems and at the period of 0. 5 s for inelastic systems. The absolute input energy spectra are much larger than relative ones in very short period range but some less than relative ones in long period range. It is also found that the ductility factor has a significant effect on both absolute and relative input energy spectra. The absolute input energy spectra increase with the increasing of ductility factor for the periods less than 0. 3 s but decrease for the periods larger than 0. 3 s. The absolute input energy spectra for different ductility factor are almost equivalent at the period about 0. 3 s, but for relative input energy spectra, the period is about 0. 5 s. The effect of ductility on the relative input energy spectra in the short period range is much larger than that on the absolute input energy spectra, especially on the softer site class. |
| |
| Keywords: | input energy spectra ground motion attenuation relationship ductility fac-tor two-stage regressive method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地震学报》浏览原始摘要信息 |
| 点击此处可从《地震学报》下载免费的PDF全文 |
