Abstract: According to the features of litho-geologic body and its response to earthquake the study of anomalous areas of high intensity nearby Beijing caused by the Tangshan earthquake is carried out in this report. It is suggested that the "anomalous areas" may be regarded as a loose geologic unit formed under the conditions of lithologic alternation and mainly consisted of fine sand and silt interbedding structure or of clayey fine sand intercalated with silt.The coefficient of rigidity of each unit is less than 2.0 and it has a significant long-period component of microseism. Under the action of great and distant Tangshan earthquake the response of these geologic units to the ground motion has a distinct common features, in other words, it shows the great response to the earthquake and its duration in a range of broad band.The results and the method of analysis presented herein would be an effective approach for ground motion analysis and for zonation of seismic response.

摘要： 本文从岩相地质体特征和地质体地震反应特点等方面,探讨了唐山地震时北京郊区形成几个高烈度异常破坏区的原因。本文的结果和分析方法,为一个地区岩相地质体的地面运动分析和地震反应区划提供了一个有效的途径。