不同加载路径对钢筋混凝土L形柱抗震性能的影响  

Effects of different load paths on seismic behavior of L-shaped reinforced concrete columns

作　　者：陈滔[1] 陈娟 黄宗明[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆市设计院,重庆400015

出　　处：《地震工程与工程振动》2007年第3期58-63,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50478067);重庆市科技攻关计划项目(8850);重庆大学自然科学青年基金项目

摘　　要：为了进一步探讨复杂加载路径下钢筋混凝土L形柱的受力性能,采用基于有限单元柔度法纤维模型梁柱单元,对忽略剪切和扭转影响的钢筋混凝土L形柱在不同加载路径下的抗震性能进行了计算机模拟分析,研究了不同加载路径对钢筋混凝土L形柱承载力、延性、累积滞回耗能等的影响。结果表明,现有钢筋混凝土L形柱抗震性能评定方法应作适当调整,以考虑加载路径对评定结果的影响。To probe further into seismic behavior of L-shaped reinforced concrete columns under complex load paths, L-shaped reinforced concrete columns without considering the effects of shear and torsion are analyzed under different load paths by using the fiber-model beam-column element on the basis of the finite element flexibility method. The effects of different load paths on the strength, the ductility and the cumulative hysteretic energy dissi- pation of L-shaped reinforced concrete columns are studied. The results show that the existing method for estimating the seismic behavior of L-shaped reinforced concrete columns should be relevantly adjusted to consider the effects of load paths.

关 键 词：钢筋混凝土柱 加载路径 抗震性能 

分 类 号：P315.97[天文地球—地震学] TU375.3[天文地球—固体地球物理学]