不同基岩地震波作用下深覆盖场地的反应特征分析  

Response Characteristic Analysis of Soil Site with Deep Deposit under Different Bedrock Seismic Waves

作　　者：胡文凯 陈清军[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《结构工程师》2010年第5期85-90,共6页Structural Engineers

基　　金：国家自然科学基金资助(批准号:5097819890915011)

摘　　要：由于长周期地震动实测记录的缺乏,目前国内外对长周期地震动特性的研究尚不成熟。首先从1999年集集地震记录库中选取三条Ⅰ类场地上较为典型的长周期实测地震记录,进行长周期地震动时、频特性分析。在此基础上,以上述三条长周期实测地震记录作为基岩地震动输入,采用场地等效线性化的频域分析方法,对某深覆盖场地进行了地震反应分析,并同普通地震波(包括IZT090波和IZT180波)作用下的场地反应进行了比较,探讨了不同强度地震波作用下深覆盖场地的长周期地震反应特征,得到了有工程参考价值的结果。Since lack of long-period seismic record over the world,it is not well-developed on dynamic characteristic for long-period seismic motion.In this paper,three typical long-period seismic waves(Ⅰ class site) from Chi-Chi earthquake in 1999 were analyzed by time-domain and frequency-domain method.Moreover,by inputting the above three seismic waves as bedrock waves and taking equivalent linear approach in frequency domain,a seismic response analysis for a sit with deep deposit was conducted.Furthermore,a comparison between the long-period seismic response and some normal seismic response(IZT090 wave and IZT180 wave) was carried out.Also,the response characters of soil site with deep deposit of vary seismic intensities were discussed and useful results to engineering project were acquired.

关 键 词：基岩 地震波作用 深覆盖 地震反应分析 特征分析 Seismic Waves Different Deep 长周期地震动 地震记录 实测 频域分析方法 地震动特性 地震动输入 等效线性化 特性分析 反应特征 场地反应 参考价值 不同强度 

分 类 号：P315.9[天文地球—地震学] TU435[天文地球—固体地球物理学]