合肥城区基于抗倒塌的地表地震动峰值加速度研究  

Study on Peak Acceleration of Ground Motion Based on Collapse Resistance in Hefei Urban Area

作　　者：解惠婷 曹均锋 冯伟栋[1,2] 彭刘亚 XIE Huiting;CAO Junfeng;FENG Weidong;PENG Liuya(Anhui Earthquake Engineering Research Institute,Hefei 230031,China;Anhui Earthquake Agency,Hefei 230031,China;Hefei University of Technology,Hefei 230009,China)

机构地区：[1]安徽省地震工程研究院,合肥230031 [2]安徽省地震局,合肥230031 [3]合肥工业大学,合肥230009

出　　处：《华南地震》2023年第4期26-33,共8页South China Journal of Seismology

基　　金：安徽省重点研究与开发计划(2022m07020005);安徽省地震局青年基金项目(20210615)联合资助。

摘　　要：根据合肥城区地貌及第四系分布特征,选取了36个典型钻孔,运用一维等效线性方法,对三种不同超越概率条件下地震动参数进行计算,并对峰值加速度放大系数以及罕遇地震动与基本地震动放大倍数的规律进行研究。结果表明:覆盖层厚度、地貌特征、土层结构对地表地震动峰值加速度及其放大系数的影响显著,且存在一定规律性。According to the geomorphology and the Quaternary distribution characteristics of Hefei urban area,36 typical boreholes are selected,and the one-dimensional equivalent linear method is used to calculate the ground motion parameters under three different exceedances probability conditions,and the peak acceleration amplification coefficient and the law of rare ground motion and basic ground motion amplification are studied.The results show that the overburden thickness,geomorphic features and soil structure have significant effects on the peak acceleration and amplification coefficient of ground motion,and there is a certain regularity.

关 键 词：合肥城区 抗倒塌 峰值加速度放大系数 地表地震动峰值加速度 

分 类 号：TU435[建筑科学—岩土工程]