【摘要】 本文在详细研究了不同土层结构在不同地震动输入下的地表反应谱的平台值和特征周期的基础上,提出了基于土层结构的场地分类的初步方案。本方案给出了在现行建筑抗震设计规范四类场地划分的基础上,进一步考虑软弱夹层在底部、中部和上部3种情况的场地分类方法。本文的结果对进一步推动场地分类的研究具有一定的意义。更多还原

【Abstract】 Based on the detailed study about flat section values and characteristic periods of ground surface response spectra of different soil layer constructions under different ground motion inputs, a primary scheme of site classification is presented. On the basis of four site-classification in the current code for seismic design of buildings, a new site classification method that can consider the profiles containing bottom ,mid or top soft layer is put forward in the scheme. The results obtained in the paper have some significance for promoting further studies on site classification.更多还原