预应力碳纤维布加固钢筋混凝土T形梁试验研究

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基金项目:

国家863研究计划(编号:2001AA336010);国家自然科学重点基金(编号:50238030)资助

EXPERIMENTAL STUDY ON T-REINFORCED CONCRETE BEAMS STRENGTHENED WITH PRESTRESSED CFRP SHEETS

1.
1 CCI Urban Construction and Development Co.,Ltd Beijing 100085;
2.
2 Department of Civil Engineering,Tsinghua University Beijing 100084;
3.
3 Central Research Institute of Building and Construction,MCC Group Beijing 100088

摘要: 近年来,预应力碳纤维布加固混凝土梁技术以其碳纤维布强度利用程度高、能改变被加固梁正常使用阶段性能的显著优点成为粘贴类加固研究的一个热点。通过3根预应力碳纤维布加固钢筋混凝土T形梁的试验研究,对比分析了预应力碳纤维布、非预应力碳纤维布加固梁和未加固混凝土梁的性能区别,试验结果进一步验证了预应力碳纤维布加固技术的显著优点。试验研究可为后续同类研究提供参考。
- 预应力 /
- 碳纤维布 /
- 加固 /
- 混凝土T形梁
Abstract: The technology of strengthening reinforced concrete beams with prestressed CFRP sheets has become a hot spot of the research on adhesive strengthenings in recent years due to high efficient use of CFRP sheets' strength,and the change in the beams' properties under normal use.It was compared and analyzed the differences among the RC beam strengthened with prestressed CFRP sheets,the one strengthened with nonprestressed CFRP sheets as well as that without strengthening through the experimental study on three T-RC beams strengthened with prestressed CFRP sheets.The advantages of strengthening by CFRP sheets were further verified by the test results.The study may provide a reference for similar researches in the future.
- prestress /
- CFRP sheets /
- strengthen /
- T-concrete beam