HB-FRP加固损伤混凝土梁的试验分析

Experimental Study on Reinforcement for Damaged Concrete Beams with HB-FRP

为了探究混合锚固法(HB-FRP)加固损伤混凝土梁的破坏机理以及不同加固方案对加固梁力学性能的影响,对9根试验梁进行四点弯曲加载试验,进而研究其力学性能表现以及剥离破坏的机理。试验结果表明:HB-FRP对加固梁承载力的提升显著,且当锚固钢板宽度为6 cm、预紧力扭矩为20 N·m时,加固梁的力学性能表现最佳。

In order to explore the failure mechanism of damaged concrete beams strengthened by the hybrid anchorage method(HB-FRP)and the influence of different strengthening schemes on the mechanical properties of the strengthened beams,four-point bending loading tests were carried out on 9 test beams to study their mechanical properties and peeling failure.The test results show that HB-FRP significantly improves the bearing capacity of the reinforced beam,and when the width of the anchoring steel plate is 6 cm and the preload torque is 20 N·m,the mechanical performance of the reinforced beam is the best.