%0 Journal Article
%T 全CFRP筋混凝土柱抗震性能非线性分析<br>Nonlinear analysis of seismic performance of concrete columns reinforced with full CFRP
%A 江世永
%A 蔡涛
%A 吴世娟
%A 姚未来&lt
%A br&gt
%A JIANG Shiyong
%A CAI Tao
%A WU Shijuan
%A YAO Weilai
%J 铁道科学与工程学报
%D 2018
%X 对6根不同轴压比、剪跨比的全CFRP筋柱进行往复荷载试验，分析其受力特征、刚度变化和滞回特性等抗震性能。通过OpenSees分析平台，选取基于柔度法理论的Nonlinear Beam Column单元，并结合零长度转动弹簧和零长度剪切弹簧单元，建立全CFRP筋混凝土柱数值分析模型。研究结果表明：考虑了筋材滑移和剪切变形的数值模型能较好地模拟全CFRP筋混凝土柱在正反交替荷载下的滞回特征，采用综合考虑承载力和变形因素的综合性能指标能够较好地评价CFRP筋柱的抗震性能，有限元模拟结果和试验结果均得出，剪跨比越大或轴压比越小，综合性能指标越大。<br>In this paper, six concrete columns reinforced with CFRP bars with different axial compression ratios and shear span ratios were tested under low cyclic loading. The seismic performances including stress characteristics, hysteretic characteristics and ductility were analyzed. With the aid of the OpenSees, the nonlinear beam column element of the flexibility method was selected, together with the zero length spring element and the zero length shear spring. A numerical analysis model was established to analyze the concrete columns reinforced with CFRP bars, and the bond slip of bars and shear deformation were reasonably considered. The simulation results were compared with the experimental, and it is found that the numerical model can be used to simulate the hysteretic behavior of whole CFRP reinforced concrete columns under cyclic loading. In addition, the improved comprehensive performance index was adopted to evaluate the ductility of the column reinforced with CFRP bars. Both the results of finite element simulation and experiment get the same conclusion the comprehensive performance index is greater when the axial compression ratio is smaller or the shear span ratio is larger
%K CFRP筋混凝土柱
%K 抗震性能
%K OpenSees
%K 剪切变形
%K 非线性分析
%K 改进综合性能指标&lt
%K br&gt
%K concrete columns reinforced with CFRP bars
%K seismic performance
%K OpenSees
%K shear deformation
%K nonlinear analysis
%K improved comprehensive performance index
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_318059