摘要
汶川地震中都江堰地区缺少地震记录,因此模拟该地区的地震动是获得地震信息的有效途径。在充分利用有限的流动台余震记录基础上,用随机方法模拟了都江堰地区小震,将小震时程作为经验格林函数合成大地震时程,进而获得都江堰地区的卓越周期。模拟结果表明:汶川地震中都江堰地区的加速度峰值约400 cm/s2,基岩场地的卓越周期在0.2～0.3 s。这些数据为都江堰地区建筑物的抗震设防提供了基础资料。
The insufficient record of earthquake occurring at Dujiangyan district results in the neccessity of using the simulation of ground motion of this region as an effective approach to getting earthquake information.The approach consists of simulating small earthquake time-histories of Dujiangyan district with the stochastic method,together with adequate utilization of the finite records of ambulatory stations,and using the small earthquake time-histories as Empirical Green＇s functions to simulate the main shock time-histories at Dujiangyan district,and producing the predominant period by more calculations.The simulation shows that the peak values of acceleration during Wenchuan earthquake at Dujiangyan district are about 400 cm/s2.These data promises to provide basic anti-sesmic design information of construction at Dujiangyan district.
出处
《黑龙江科技学院学报》
CAS
2011年第3期180-184,共5页
Journal of Heilongjiang Institute of Science and Technology
基金
国家重点基础研究发展计划(973计划)项目(2007CB7142002007CB714201)
关键词
汶川地震
地震动模拟
经验格林函数
随机方法
卓越周期
Wenchuan earthquake
ground motion simulation
Empirical Green＇s function
stochastic method
predominant period
