摘要
本文研究了钢筋混凝土框架结构在强烈地震作用下的倒塌反应。文中对结构处于不稳定状态(下降段)时的动力反应进行了讨论。通过实例计算,着重讨论了在强烈地震下结构不稳定状态对结构反应的影响以及在不稳定状态下结构强度、变形和延性等各方面的特性。此外,还探讨了极限曲率延性比和强度降低率在结构地震倒塌反应中的应用。
During a severe earthquake the members in reinforced concrete structure may come into descending branch and the structure will be in an unstable deformation state. Earthquake response of the structure in the unstable state is greatly different from the normal inelastic response in a stable state .It is shown that in the nonlinear earthquake response analysis of reinforced concrete structure the unstable state of structure should be considered so that the damage level,weak parts and collapse process of the structure could be accurately predicted. In the paper the influence of the unstable state of the structure on the structural behavior such as strength, deformation and ductility are studied. Applications of the ultimate curvature ductility and strength decrease ratio for dynamic collapse analysis of the reinforced concrete structures are developed and discussed.
出处
《地震工程与工程振动》
CSCD
北大核心
1989年第1期67-78,共12页
Earthquake Engineering and Engineering Dynamics
