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.
Aiming at providing new method and reference for the construction of near-fauh 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 hi-normalized combined response spectra.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2014年第10期17-22,共6页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(51238012
51178152)
山东省蓝色经济区工程建设与安全协同创新中心资助
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
near-fauh ground motion
directivity effect, hi-normalized combined response spectrum
seismicdesign spectrum
