预应力碳纤维布加固混凝土梁疲劳寿命分析

张轲; 叶列平; 岳清瑞

doi:10.13204/j.gyjz200807027

预应力碳纤维布加固混凝土梁疲劳寿命分析

doi: 10.13204/j.gyjz200807027

1.
1. 北京中建衡建筑工程检测鉴定有限公司,北京 100011;
2.
2. 清华大学土木系,北京 100084;
3.
3. 中冶集团建筑研究总院 ,北京 100088

详细信息

作者简介:
张轲男 1976年12月出生博士高级工程师 E-mail:tmedragon@126.com

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- 文章访问数: 67
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- 被引次数: 0
出版历程
- 收稿日期: 2007-06-20
- 刊出日期: 2008-07-20

ANALYSIS OF FATIGUE LIFE OF CONCRETE BEAMS REINFORCED WITH PRESTRESSED CFRP SHEETS

1.
1. Beijing Zhongjianheng Test and Appraiser of Construction Engineering Co.,Ltd Beijing 100011;
2.
2. Civil Engineering Department,Tsinghua University Beijing 100084;
3.
3. Central Research Institute of Building and Construction,MCC Group Beijing 100088

摘要

摘要: 预应力碳纤维布加固技术充分发挥了碳纤维布高强度高弹模的特点,采用这种方法能够大幅延长被加固混凝土梁的疲劳寿命。通过引入局部应力应变方法,对疲劳荷载作用下预应力碳纤维布加固混凝土梁的疲劳寿命进行了分析,根据试验结果对关键参数进行了确定,进而提出了预应力碳纤维布加固梁的疲劳寿命实用计算方法。与现行规范方法相比,方法更趋合理,可为后续疲劳理论研究和规范制定提供参考。
- 预应力 /
- 碳纤维布 /
- 加固 /
- 混凝土梁 /
- 疲劳寿命
Abstract: The full play to high-strength and high elasticity of CFRP sheets can be given by strengthening technology with prestressed CFRP sheets,which can increase remarkably fatigue life of a rein-forced concrete beam.It is analyzed the fatigue life of prestressed CFRP sheets under fatigue load,using local stress-strain method.The key parameters are determined by the test results,based on which practical calculation method of its fatigue life is also proposed.This method is more rational as compared to that in current code,which may provide a reference for subsequently researching fatigue theory and working out codes.
- prestress /
- CFRP sheets /
- strengthen /
- concrete beam /
- fatigue life

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参考文献(11)

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