CAJ | 학술논문

为了揭示预应力碳纤维布加固混凝土构件的效果,分别采用普通碳纤维布和预应力碳纤维布对4根钢筋混凝土梁进行抗弯性能试验研究.试验分析了预应力碳纤维布加固混凝土梁的屈服荷载、极限荷载、抗弯刚度等性能指标,并分别比较了预应力碳纤维布与普通碳纤维布、不同预应力水平碳纤维布的破坏形态及加固效果.试验结果表明,采用预应力碳纤维布加固混凝土梁可以充分发挥碳纤维布的高强性能,预应力碳纤维布加固的混凝土梁要比普通碳纤维布加固混凝土梁的承载力、刚度等性能指标都有明显提高,而且预应力水平越大,提高的效果越明显.
위료게시예응력탄섬유포가고혼응토구건적효과,분별채용보통탄섬유포화예응력탄섬유포대4근강근혼응토량진행항만성능시험연구.시험분석료예응력탄섬유포가고혼응토량적굴복하재、겁한하재、항만강도등성능지표,병분별비교료예응력탄섬유포여보통탄섬유포、불동예응력수평탄섬유포적파배형태급가고효과.시험결과표명,채용예응력탄섬유포가고혼응토량가이충분발휘탄섬유포적고강성능,예응력탄섬유포가고적혼응토량요비보통탄섬유포가고혼응토량적승재력、강도등성능지표도유명현제고,이차예응력수평월대,제고적효과월명현.
In order to reveal prestressed CFRP reinforcement effect on the performance of reinforced concrete beams, the four concrete experimental beams strengthened with CFRP and prestressed CFRP were designed to be studied. The test analysis of the yield load, ultimate load, bending stiffness and other performance indicators of the concrete beams which strengthened with prestressed CFRP, and compares the reinforcing effect of the prestressed CFRP with the ordinary CFRP, under different prestressed CFRP damage forms and reinforced ef-fect. The test results show that, using prestressed CFRP reinforced concrete beam can give full play to the high performance of CFRP, concrete beams which strengthened with prestressed CFRP are more significantly im-proved in bearing capacity, stiffness and other performance index than those of concrete beams which strength-ened with ordinary CFRP, the bigger the prestress level is, the more obvious the effect improves.