一种简化的R.C框架结构地震位移反应分析方法 A SIMPLIFIED ANALYTICAL METHOD FOR MAXIMUM INELASTIC SEI

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一种简化的R.C框架结构地震位移反应分析方法

A SIMPLIFIED ANALYTICAL METHOD FOR MAXIMUM INELASTIC SEISMIC RESPONSE OF R. C. FRAMES

采用单自由度体系等效多自由度体系,只考虑第一振型影响,确定结构最大位移反应.该文假定R.C框架结构屈服前刚度与强度相关,屈服位移由结构几何尺寸近似确定.结合我国建筑抗震设计规范,研究不同设计条件下R.C框架结构的超强系数,然后乘以设计地震作用确定结构的实际强度.根据结构屈服位移以及实际强度确定等效结构的有效周期.当有效周期大于特征周期时,结构最大非线性位移反应采用等位移原理确定,当有效周期小于特征周期时,结构最大非线性位移反应采用等能量原理确定.该方法与其它方法相比,避免了复杂的弹塑性动力或静力分析,不需要进行迭代计算,且与我国规范结合紧密,特别适合对既有结构快速评估.水利论文S3Z$t5W3p&}

作 者: 马宏旺 曹晓昀 MA Hong-wang CHAO Xiao-yun  
作者单位:上海交通大学船舶海洋与建筑工程学院土木系,上海,200240 
刊 名:工程力学  ISTIC EI PKU
英文刊名:ENGINEERING MECHANICS 
年,卷(期):2007 24(12) 
分类号:TU311.3 O327 
关键词:钢筋混凝土框架结构   屈服位移   超强系数   有效周期   等位移原理  
机标关键词:框架结构地震位移反应分析方法SEISMIC RESPONSE特征周期实际强度确定结构屈服位移建筑抗震设计规范最大位移反应结构几何尺寸非线性多自由度体系单自由度体系能量原理设计条件静力分析既有结构迭代计算第一振型 
基金项目:上海市重点学科建设项目,上海交通大学校科研和教改项目 
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