钢筋混凝土结构抗震设防目标及实现步骤研究

Study on Seismic Fortification Goal for Reinforced Concrete Structures and Its Implementation

钢筋混凝土结构的抗震设防目标,通俗的说法是"小震不坏,中震可修、大震不倒",具体来说是"三水准设防目标"。三个水准的设防目标是通过两阶段设计来实现的。钢筋混凝土结构抗震设计的基本步骤:把握好抗震概念设计,采取双指标控制条件,使结构和结构构件既满足抗震承载力要求又满足变形要求,同时保证加强抗震构造措施,使结构有足够的结构延性,最终实现"三水准设防"目标。

The goal of three-level seismic design for reinforced concrete structure, in popular word called ＂no damage in small earthquake, repairable in moderate earthquake, not collapse in large earthquake＂, can be implemented in two - step designing process. The basic steps are to grasp the aseismic design concept, to take control of dual-target conditions, to make structure and structural components meet the seismic capacity and deformation requirements, to strengthen ectonic earthquake measures, to make frame have enough structure ductility. The main aim is to realize the “the goal of threelevel seismic design”.