摘要
收集整理了2013年11月23日吉林省松原市前郭尔罗斯蒙古族自治县Ms5.8和Ms5.0地震的地表强震动记录,进行了常规的处理,剔除掉了异常的记录。通过分析地震动三要素特征,首先获得了较为可靠的PGA和PGV幅值,拟合出PGA与PGV之间的关系;其次以较常用的Significant持时、Bracketed持时作为研究对象,进行回归分析,探讨了松原地区地震动持时与距离的相关性;最后计算了松原地震中典型的幅值较大的记录5%阻尼比的反应谱,并与我国《建筑抗震设计规范》(GB50011—2010)中的设计谱进行了比较。
The strong ground motion records of Ms5.8 and Ms5.0 earthquakes in Mongolian Autonomous County of Qian Gorlos of Songyuan City,Jilin Province on Nov. 23,2013 were collected and then conventionally processed to eliminate the abnormal ones. Through analyzing the three elements of ground motion,the reliable PGA and PGV amplitudes were obtained and the relationship between PGA and PGV was fitted. Then,taking the Significant duration and Bracketed duration as study objects,regression analysis was made and the correlation between the duration and epicentral distance in Songyuan area was discussed. Last,the larger amplitude response spectrum with 5% damping ratio of the Songyuan earthquake was calculated and compared with the design spectrum in China’s Code for Seismic Design of Buildings（GB50011-2010）.
出处
《防灾科技学院学报》
2017年第1期19-25,共7页
Journal of Institute of Disaster Prevention
基金
吉林省地震局合同制科研课题(2016)
关键词
松原地震
强地面运动
幅值
持时
反应谱
Songyuan earthquake
strong ground motion
amplitude
duration
response spectrum
