前言现行建筑规范的抗震条例所规定的侧力,实际上小于大地震时建筑物反应所引起的侧力。因此,建筑规范力求依靠细部结构的延性、限制不规则的结构并给易受损坏的结构体系以较高的荷载系数,以赋予建筑物在大地震时所需要的附加承载能力,但是不 Foreword The lateral force stipulated in the current regulations for the construction of buildings is actually less than the lateral forces caused by building reactions during large earthquakes. Therefore, building codes seek to rely on the ductility of detailed structures, limit irregular structures, and provide higher load factors for structural systems that are subject to damage, in order to give buildings the additional load carrying capacity needed for major earthquakes, but not