【摘要】 采用目标谱拟合法人工合成地震动时程,拟合过程中对包络线参数进行定量的变化,进行土层地震反应分析。根据其对场地反应的影响,讨论时程参数对人工拟合地震动时程的影响规律,为场地抗震设防参数的选取提供依据。研究结果表明:t1t、2和c不同时,所拟合的地震动时程对土层地震反应结果有较大影响,其影响程度与土层结构关系密切。更多还原

【Abstract】 The target spectral fitting method is used to synthesize time-history of ground motion.The soil seismic response is analyzed by quantitalively changing the parameters of envelope,which could influence the site response in the process of artificial fitting ground motion time-history.In order to provide the basis for site fortification against earthquake,the influences of the time-history parameters are discussed.The results show that,when t1、t2 and c taking different values,the soil seismic response are greatly affected by the fitting ground motion time-history,and the influence degree is closely related to the soil structure.更多还原