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.

中文翻译：

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结合使用EB CFRP板，NSM CFRP筋和P‐SWR来加固RC梁

外部粘合（EB）CFRP薄板（或近表面安装的[NSM] CFRP筋）的脱粘问题以及NSM CFRP筋（或预应力钢丝绳[P-SWR]）的边缘和间距要求的空间有限这些强化技术的应用。这些技术的组合可以克服每种技术的缺点，并在本文中进行了实验和分析研究。试验结果表明，组合加固梁的抗弯性能介于采用相应的单独加固技术加固的梁的抗弯性能之间。发现这三种技术的结合成功地防止了EB或NSM技术中经常发生的脱胶问题，并改善了NSM和P-SWRs技术所需的间距和边缘间隙。此外，该组合被证明可有效地限制裂纹扩展并提高加固梁的延展性。