| FRP徐变对FRP约束混凝土柱徐变的影响分析 |
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| 引用本文： | 周浪,王元丰.FRP徐变对FRP约束混凝土柱徐变的影响分析[J].公路交通科技,2007,24(7):70-75. |
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| 作者姓名： | 周浪 王元丰 |
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| 作者单位： | 1. 中国建筑科学研究,国家建筑工程质量监督检验中心,北京,100013
2. 北京交通大学,土木建筑工程学院,北京,100044 |
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| 基金项目： | 教育部新世纪优秀人才项目(NCET-04-0097)，国家自然科学基金资助项目(50378002) |
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| 摘 要： | 综述了国内外FRP约束混凝土徐变及FRP徐变的研究现状与存在的问题。基于多轴应力状态下混凝土的徐变理论及流动率法的混凝土B3徐变模型,分别考虑外包FRP布徐变及忽略其徐变对约束混凝土柱徐变的影响,建立了FRP约束混凝土短柱在轴向荷载作用下的徐变计算模型。利用此模型对计入FRP的徐变与忽略FRP徐变的计算结果进行了对比分析,结果表明考虑FRP徐变与否计算出的理论值有一定差异。与5组试验数据相对比,考虑FRP徐变的理论值更接近于试验值。
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| 关 键 词： | 桥梁工程 FRP约束混凝土柱 对比分析 徐变 FRP徐变 B3模型 |
| 文章编号： | 1002-0268（2007）07-0070-06 |
| 修稿时间： | 2006-03-01 |
Analysis of Effect of FRP Creep on Creep of Fiber-wrapped Concrete Columns |
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| ZHOU Lang,WANG Yuan-feng.Analysis of Effect of FRP Creep on Creep of Fiber-wrapped Concrete Columns[J].Journal of Highway and Transportation Research and Development,2007,24(7):70-75. |
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| Authors: | ZHOU Lang WANG Yuan-feng |
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| Institution: | 1. China Academy of Building Re.arch, National Center for Quality Supervision and Test of Building Engineering, Beijing 100013, China; 2. School of Civil Engineering and Architecture, Beijing Jiao tong University, Beijing 100044, China |
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| Abstract: | Based on reviewing the study on the creep of FRP and fiber-wrapped concrete columns(FWCC),a creep model is constructed to analyze the time-dependent behavior of FWCC under long-term sustained axial load by utilizing the creep theory of concrete under multi-axie stresses and B3 creep model for concrete under multi-aiaxial stresses.The creep of FWCC with the creep of FRP and without it are calculated respectively,showing that the results with considering the creep of FRP agree better with five groups of experimental data that without FRP creep.The difference between the two theoretical values is not neglectable. |
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| Keywords: | bridge engineering fiber-wrapped concrete columns contrast analysis creep creep of FRP B3 model |
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