【摘要】 分析了中美欧抗震设计中的水平地震作用问题。首先,比较了中美欧抗震规范中建筑物重要性、强度折减系数的差异,介绍了中国规范的底部剪力法、美国规范的等效侧向荷载法以及欧洲规范的侧向荷载法。然后对一多层框架结构,分别作为办公楼和医院,计算了不同设防烈度下、不同延性等级下的水平地震作用,并进行了比较分析,获得了3种规范关于水平地震作用的一些差异。更多还原

【Abstract】 The differences of horizontal earthquake action in the seismic design codes of China,America and Europe are studied in this paper.Firstly,comparison of building importance,strength reduction factors of GB50011-2001,FEMA450 and Eurocode 8 is presented,and base shear method of GB50011-2001,equivalent lateral force procedure of FEMA450,lateral force analysis method of Eurocode 8 are summarized.Then,the seismic base shear of a multistorey frame structure with different ductility is computed as an office or a hospital building under intensities 7,8 and 9,the both computed results are compared,and some differences of seismic base shear are found for the three codes.更多还原