摘要
提出"次中震"的概念,将"小震、次中震、中震、大震"四级地震水准与"轻微破坏、中等破坏、严重破坏、倒塌"四级整体极限状态相对应,提出多级力控制Pushover方法。考虑结构的随机性,将蒙特卡洛模拟法与多级力控制Pushover方法相结合,提出多级力控制随机Pushover方法。将该法应用于钢筋混凝土框架结构,得到结构整体抗震能力易损性曲线。
A new concept of ＂sub-moderate earthquake＂ is proposed,and then a multi-level force controlled pushover method is put forward,which builds up the corresponding relationships between four levels of seismic fortification （namely,minor,sub-moderate,moderate and major earthquakes） and four levels of global limit states of structures（namely,minor damage,moderate damage,severe damage and collapse）.To consider the randomness in structures,a multi-level force controlled random pushover method is put forward,which combines Monte Carlo Simulation method with multi-level force controlled pushover approach.The proposed method is applied to a R.C.frame structure,for which the fragility curves of the global seismic capacity of the structure are obtained.
出处
《工程力学》
EI
CSCD
北大核心
2010年第A01期6-10,共5页
Engineering Mechanics
基金
国家自然科学基金重大研究计划项目(90715021)
国家自然科学基金项目(50978080
50678057
50108005)
地震行业科研专项基金项目(200808073)
北京市自然科学基金项目(8082013)
