| 引用本文: | 张洪智,刘秀明,徐龙军.近断层方向性效应地震动双规准组合反应谱[J].哈尔滨工业大学学报,2014,46(10):17.DOI:10.11918/j.issn.0367-6234.2014.10.003 |
| ZHANG Hongzhi,LIU Xiuming,XU Longjun.Bi-normalized combined response spectra of directivity effect ground motions in near-fault region[J].Journal of Harbin Institute of Technology,2014,46(10):17.DOI:10.11918/j.issn.0367-6234.2014.10.003 |
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| 摘要: |
| 为了给近断层设计谱的确定提供新的方法和参考依据,考虑场地条件的影响,分析了53 条具有典型近断层方向性效应特征的地震动记录的双规准组合反应谱的特征．相比传统的地震动加速度、速度和位移反应谱,组合反应谱的谱值与地震动的幅值相关性更强;双规准组合谱具有更低的统计变异性．最后,给出了基于双规准组合谱特征的近断层区场地相关设计谱模型． |
| 关键词: 近断层地震动 方向性效应 双规准组合反应谱 抗震设计谱 |
| DOI：10.11918/j.issn.0367-6234.2014.10.003 |
| 分类号:P315.9 |
| 基金项目:国家自然科学基金资助项目(2,2); 山东省蓝色经济区工程建设与安全协同创新中心资助. |
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| Bi-normalized combined response spectra of directivity effect ground motions in near-fault region |
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ZHANG Hongzhi, LIU Xiuming, XU Longjun
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(Dept. of Civil Engineering, Harbin Institute of Technology at Weihai, 264209 Weihai,Shandong,China)
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| Abstract: |
| Aiming at providing new method and reference for the construction of near-fault design spectra, characteristics of bi-normalized combined spectra of 53 typical near-fault directivity effect ground motions are analyzed by considering the influence of site condition. Results show that the bi-normalized combined spectrum exhibits the highest correlation with the amplitudes of ground motions, and the lowest statistical variability, compared with those of acceleration spectrum, velocity spectrum and displacement spectrum. Finally, site-depended design spectral models for near-fault region are suggested based on features of bi-normalized combined response spectra. |
| Key words: near-fault ground motion directivity effect, bi-normalized combined response spectrum seismic design spectrum |
