摘要
对场地土层地震反应分析的主要方法进行介绍,在天津软弱土场地(Ⅳ类场地)上分别采用等效线性化和逐步积分的方法进行土层反应,并把土层反应得到的结果与天津地区Ⅳ类场地上的实际强震记录对比,发现等效线性化方法适用于天津软弱土场地土层地震反应。对软弱土场地土层地震反应结果进行分析,把该结果与GB 50011—2010《建筑抗震设计规范》中相应的参数进行对比,分析两者之间的差别,为天津软弱土场地的抗震设防提供合理的建议。
Main methods for earthquake response analysis on layered site soil are introduced. Responses of soft soil site in Tianjin are made separately by using the methods of equivalent linearization and gradual integral. Compared with the real strong motion record of the fourth kind of site in Tianjin area, it is found that equivalent linearization method is better for the soft soil site in Tianjin. Also,the response results of soft soil site layer are analyzed and compared with the corresponding parameters of 〈（Code for Earthquake Resistance Design of Buildings》 GB 50011--2010, and the difference between the two is analyzed. Based on discussion above, the reasonable suggestions are proposed for fortification against earthquake of soft soil site in Tianjin.
出处
《山西地震》
2011年第3期29-32,36,共5页
Earthquake Research in Shanxi
关键词
抗震设计
地震记录
软弱土
土层地震反应
等效线性化
逐步积分法
seismic design
earthquake record
soft soil
earthquake response of layered soil
equivalent linearization
gradual integral method
