摘要
本文介绍在1988年11月云南省澜沧-耿马大地震中中国建筑科学研究院工程抗震研究所和云南省地震局在滇南的联合强震观测台网。以及两单位的流动观测台站在极震区所获取的主震和大量余震加速度记录。文中展示了Ms=7.6的主震时,距震中142.5公里的景洪台站的远场地面加速度记录;还展示了Ms=6.7的强余震时,距震中仅为3.8公里的竹塘站的近场地面加速度记录,其水平向最大加速度为0.55g,竖向最大加速度为0.39g。文中同时对两组记录作了反应谱和β谱分析并参照新修订的建筑抗震设计规范GBJ11-89所提出的设计反应谱,对近震反应谱和远震反应谱的不同特征作了比较分析。最后对加强强震观测的对策提出了看法。
Presented in this paper are the accelerograms recorded by the South Yunnan Array, jointly established by the Institute of Earthquake Engineering and the Seis-mological Bureau of Yunnan Province, and the temporary stations, located in the epicenter region, from Lancang-Gengma Earthquake through November 1988. The ground motion acceleration records from mainshock (Ms=7.6) at Jinghong station with epicentral distance 142km and aftershock (Ms = 6.7) at Zutang station with epicentral distance 3.8km and the maximum peak values of 0.55g (horizontal) and 0.39g (vertical), as well as their response spectra and amplification coefficent β spectra are graphically given in this paper. Some spectral characteristics of near field and far field events, comparing with the standard spectra specified by the Chinese Building Code(GBJ11-89)are also described.Finally proposed are the coun-termeasures of strong motion observation.
出处
《地震工程与工程振动》
CSCD
北大核心
1989年第4期73-82,共10页
Earthquake Engineering and Engineering Dynamics
