考虑钢筋屈曲的框架结构在大震下的非线性动力反应分析  

Nonlinear Dynamic Response Analysis on Reinforced Concrete Frames Considering Effect of Steel Bars Buckling

作　　者：杨健彬 陈晓磊[1,2] 薛峰[1,2] 傅剑平[1,2] Yang Jianbin;Chen Xiaolei;Xue Feng;Fu Jianping(Key laboratory of New Technology Construction of Cities in Mountain Area,Chongqing University,2.College of Civil Engineering,Chongqing University,400045,China)

机构地区：[1]山地城镇建设与新技术教育部重点实验室(重庆大学),400045 [2]重庆大学土木工程学院,400045

出　　处：《特种结构》2018年第4期109-116,共8页Special Structures

基　　金：国家自然科学基金(51478063)

摘　　要：以钢筋在反复受力下试验结果为依据,修正了PERFORM-3D有限元软件中考虑钢筋屈曲模型的计算参数,将计算结果与试验结果进行了对比验证。在此基础上,利用PERFORM-3D有限元软件,对按照现行规范设计的不同烈度区混凝土框架结构进行了可考虑钢筋屈曲的大震作用下非线性动力反应分析。分析结果表明:框架梁、柱端控制截面的纵向钢筋在大震作用下受压屈曲后仅能提供有限的抗压能力,一旦控制截面中的受压钢筋屈曲,框架结构将会比不考虑钢筋屈曲的更早发生破坏;此外,不同烈度区的框架结构,在罕遇地震作用下,地面运动越大,钢筋屈曲对框架结构的抗震性能影响越大,结构所表现出的抗震性能就越差。response analysis of factors and rules on the RC Frames including the reinforcement buckling in different seismic degree. The analysis results demonstrated that the longitudinal reinforcements of the frame beams and columns can only provide a limited compressive capacity. The frame was damaged earlier than the case when the rein- forcement buckling was not considered. In addition, the seismic-resistant performance of the frame was more affected by the reinforcement buckling when subjected to a rarely occurred earthquake and the performance was worse.

关 键 词：混凝土框架结构 钢筋屈曲 非线性动力反应分析 抗震性能 

分 类 号：TU311.3[建筑科学—结构工程]