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首页> 外文期刊>Structural concrete >Strengthening of RC beams using the combination of EB CFRP sheet, NSM CFRP bar and P-SWRs
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Strengthening of RC beams using the combination of EB CFRP sheet, NSM CFRP bar and P-SWRs

机译：使用EB CFRP板，NSM CFRP棒和P-SWRS的组合加强RC光束

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摘要

Debonding issues in the externally bonded (EB) CFRP sheets (or near-surface mounted [NSM] CFRP bars) and space requirements of edge and spacing clearances for NSM CFRP bars (or the prestressed steel wire ropes [P-SWRs]) have limited the applications of these strengthening techniques. The combination of these techniques may overcome the drawbacks of each technique and was experimentally and analytically investigated in this paper. Test results demonstrated that the flexural performances of the combinedly strengthened beam are between the flexural performances of the beams strengthened with the corresponding individual strengthening techniques. It is found the combination of the three techniques successfully prevented debonding issues which often occur in EB or NSM techniques and improved the spacing and edge clearances which are necessary for NSM and P-SWRs techniques. In addition, the combination was demonstrated as effective to limit the crack development and improve the ductility of the strengthened beams.
机译：在外贴（EB）碳纤维布松解问题（或近表面安装[NSM] CFRP条带）和边缘的空间要求和间隔的间隙为NSM CFRP杆（或预应力钢丝绳[P-SWRS]）具有有限的这些强化技术的应用程序。这些技术的组合可以克服每种技术的缺点，并在该纸实验和分析研究。测试结果表明，结合起来加固梁的弯曲性能是弯曲表演的梁用相应的个人加强技术加强之间。它被发现的成功地防止其脱粘常发生在EB或NSM技术问题三种技术的组合和改进的间距和边缘的间隙所必需的NSM和P-SWRS技术。此外，该组合物显示出作为有效地限制裂纹发展，提高了增强梁的延展性。

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  • 来源
    《Structural concrete》 |2021年第1期|132-145|共14页
  • 作者

    Zeng Yihua; Chen Xi; Li Xinghua; Wu Gang;

  • 作者单位

    Southeast Univ Minist Educ Key Lab Concrete & Prestressed Concrete Struct 2 Sipailou Nanjing 210096 Peoples R China|Southeast Univ Sch Civil Engn Nanjing Peoples R China;

    Southeast Univ Minist Educ Key Lab Concrete & Prestressed Concrete Struct 2 Sipailou Nanjing 210096 Peoples R China|Southeast Univ Sch Civil Engn Nanjing Peoples R China;

    Southeast Univ Minist Educ Key Lab Concrete & Prestressed Concrete Struct 2 Sipailou Nanjing 210096 Peoples R China|Southeast Univ Sch Civil Engn Nanjing Peoples R China;

    Southeast Univ Minist Educ Key Lab Concrete & Prestressed Concrete Struct 2 Sipailou Nanjing 210096 Peoples R China|Southeast Univ Sch Civil Engn Nanjing Peoples R China;

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  • 正文语种 eng
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  • 关键词

    combined strengthening; externally bonded; flexural strengthening; near surface mounted; prestressed steel wire ropes;

    机译：联合强化;外粘合;弯曲强化;靠近表面安装;预应力钢丝绳;

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