【摘要】 地震是危及人类的生产活动以及生命财产安全的突发性的自然灾害。为了减轻地震灾害,地震工程工作者长期致力于如何提高结构的抗震性能的研究,提出了一套建立在提高结构和构件的抗震强度和延性基础上的抗震理论,并广泛应用于工程实践。在强震作用下,需要依靠结构和构件的塑性变形来吸收地震传向结构的能量,使结构"裂而不倒"。而塑性变形对结构来讲实质上是一种损伤,抗震设计方法一方面利用结构的延性来减小地震作用,另一方面又要使结构不发生严重的损伤,这是对相互矛盾的目标进行的某种妥协。更多还原

【Abstract】 Earthquake is a sudden natural disaster to endanger human activities of production and life property safety.In order to mitigate earthquake disasters,earthquake engineering workers long-term focus on how to improve the aseismic performance of research,puts forward a set of build in improving the structure and component of seismic intensity and ductility based on the seismic theory,and widely used in engineering practice.Under the action of earthquake,it is need to rely on structure and component of plastic deformation to absorb the energy structure seismic good-health to crack,make the structure "crack but not fall".And plastic deformation of structure is in essence a kind of injury,seismic design method on one hand use structure to reduce the ductility of the earthquake effect,on the other hand,will make the structure is not serious damage,which is a compromise of conflicting goals.更多还原