Analytical Model for Concrete Cover Separation in Prestressed Near-Surface-Mounted Carbon Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Beams
National Natural Science Foundation of China; Yunnan Digital Technology Innovation Centre of Modern Integrated Transportation [202405AK340003]; Yunnan Caiyun Postdoctoral Program Project [ynbh24022]; Science and Technology Innovation Program of Hunan Province [2023RC3142]; Scientific Research Fund of Hunan Provincial Education Department [24A0223]; Science and technology innovation demonstration project of Yunnan Provincial Department of Transportation [2022-48]; [52178186]; [52478299]
机构署名：
本校为通讯机构
院系归属：
土木工程学院
摘要：
This study presents a novel method for calculating the stress and bending moment in reinforced concrete (RC) beams strengthened with prestressed near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP), focusing specifically on separation failure at the end concrete cover. By characterizing the geometry of the failure body and integrating it with the concrete tooth model, a comprehensive theoretical framework has been developed. This framework utilizes sectional strain distribution characteristics to establish the bending moment-curvature relationship and the load-deflection curve dur...
