| RP约束混凝土柱徐变特性的理论分析 |
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| 引用本文： | 陶忠,于清.RP约束混凝土柱徐变特性的理论分析[J].工业建筑,2001,31(4):12-16. |
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| 作者姓名： | 陶忠 于清 |
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| 作者单位： | 福州大学土木建筑工程学院 |
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| 摘 要： | 提出了FRP约束混凝土的徐变分析模型和计算方法 ,分析了加载龄期和持荷时间、轴压比、含FRP率、FRP强度和混凝土强度等因素对徐变特性的影响规律。然后提出考虑徐变影响后的FRP约束混凝土在轴心受压时的应力 -应变关系模型 ,在此基础上 ,利用数值方法计算出FRP约束混凝土轴心受压构件考虑徐变影响的荷载 -变形关系全过程曲线 ,并分析了轴压比、长细比、含FRP率、FRP强度和混凝土强度等不同参数情况下徐变对FRP约束混凝土柱承载力的影响
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| 关 键 词： | FRP约束混凝土 柱 徐变 徐变系数 应力-应变关系模型 承载力 |
| 修稿时间： | 2001年1月4日 |
THEORETICAL ANALYSIS OF THE CREEP CHARACTERISTICS OF FRP-CONFINED CONCRETE COLUMNS |
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| Tao Zhong,Yu Qing.THEORETICAL ANALYSIS OF THE CREEP CHARACTERISTICS OF FRP-CONFINED CONCRETE COLUMNS[J].Industrial Construction,2001,31(4):12-16. |
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| Authors: | Tao Zhong Yu Qing |
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| Abstract: | An attempt to predict the time dependent behavior of FRP confined concrete columns by means of a model that is proposed in this paper.Based on the theoretical model,influence law of the loading time,time under sustained loading,load ratio,FRP ratio and strength of the materials on the creep characteristics is analyzed.An attempt to predict the stress strain relations of the core concrete after sustaining axially compressive load by means of a model that is proposed in this paper.The load deformation behavior of the FRP confined concrete columns was computed,and the influence of the changing load ratio,slenderness ratio,FRP ratio and strength of the materials on the bearing capacity of the members after creep was discussed. |
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| Keywords: | FRP-confined concrete column creep creep coefficient stress-strain model bearing capacity |
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