玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (1): 58-62.

• 应用研究 • 上一篇    下一篇

CFRP-PCPs筋内嵌加固混凝土梁抗弯刚度及截面内力分析

邓宇1, 刘楠1*, 杨勇2, 张鹏1   

  1. 1.广西科技大学土木建筑工程学院,柳州545006;
    2.西安建筑科技大学土木工程学院,西安710055
  • 收稿日期:2016-07-11 出版日期:2017-01-28 发布日期:2017-01-28
  • 通讯作者: 刘楠(1990-),男,主要从事结构工程研究,1049781296@qq.com。
  • 作者简介:邓宇(1978-),男,博士,副教授,主要从事结构工程研究。
  • 基金资助:
    国家自然科学基金项目(51168006);广西高校科学技术研究重点项目(ZD2014076);广西自然科学基金项目(2015GXNSFAA139263);柳州市科学研究与技术开发计划项目(2014B020204);广西工学院自然科学基金项目(院科自1074018)

CHARACTERISTICS AND CALCULATION METHODS OF CONCRETE BEAM STRENGTHENED WITH INMOUNTED CFRP-PCPs

DENG Yu1, LIU Nan1*, YANG Yong2, ZHANG Peng1   

  1. 1.Department of Civil Engineering and Architecture, Guangxi University of Science and Technology,Liuzhou 545006, China;
    2.Department of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
  • Received:2016-07-11 Online:2017-01-28 Published:2017-01-28

摘要: 进行了8根CFRP-PCPs复合筋内嵌加固混凝土梁的加载试验研究。结果表明,与预应力CFRP材料的其他加固方式相比,采用预应力CFRP-PCPs筋内嵌加固混凝土梁可有效提高加固梁的刚度。依据试验荷载-挠度关系曲线,建立了三直线弯矩-曲率关系模型,并推导出了CFRP-PCPs筋内嵌加固混凝土梁短期刚度与挠度计算公式,将计算值与试验值进行对比,吻合度良好。

关键词: CFRP-PCPs复合筋, 三直线弯矩-曲率关系模型, 挠度, 混凝土梁

Abstract: Experimental studies on eight reinforced concrete beams strengthened with near-surface mounted(NSM) CFRP-PCPs reinforcement have been tested with load. Comparing with plastering CFRP to strengthen prestressed, the technique to strengthen concrete beams with near-surface mounted CFRP-PCPs reinforcement has specialties as rigidity. In addition, according to the test load-deflection relation curves, under the the identified trilinear moment-curvature model, deducing the CFRP-PCPs reinforcement embedded in reinforced concrete beam deflection calculation formula, the calculated value was compared with the test results, and the results match well.

Key words: CFRP-PCPs composite bars, trilinear moment-curvature model, deflection, concrete beam

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