CAJ | 학술논문

基于8个碳纤维布约束高强混凝土棱柱体试件的试验,研究了碳纤维布对提高高强混凝土抗压强度和改善其变形性能的作用.试验发现,包裹碳纤维布可以提高试件的抗压强度,并有效地改善混凝土的变形性能,其效果随碳纤维用量的增加而更加显著.在试验基础上,根据理论分析和对试验结果的整理,归纳出碳纤维布约束高强混凝土的应力-应变全曲线方程.最后,利用提出的全曲线方程编制计算机程序,分析了包裹碳纤维布对提高高强混凝土压弯构件的强度和延性的作用.
기우8개탄섬유포약속고강혼응토릉주체시건적시험,연구료탄섬유포대제고고강혼응토항압강도화개선기변형성능적작용.시험발현,포과탄섬유포가이제고시건적항압강도,병유효지개선혼응토적변형성능,기효과수탄섬유용량적증가이경가현저.재시험기출상,근거이론분석화대시험결과적정리,귀납출탄섬유포약속고강혼응토적응력-응변전곡선방정.최후,이용제출적전곡선방정편제계산궤정서,분석료포과탄섬유포대제고고강혼응토압만구건적강도화연성적작용.
Eight high strength concrete (HSC) prisms strengthened with continuous carbon fiber sheet(CFS)were tested.As a result of the confinement provided by CFS,the concrete would fail at a greater strain than the unconfined and then a significant increase in ductility can be achieved.The lateral pressure exerted by CFS would increase the compressive strength of the concrete,resulting in higher load-bearing capacity.This paper proposes the stress-strain curve of this kind of hybrid specimen,which agrees well with the test results.Based on the stress-strain relationship and the assumptions proposed in this paper,a computer program was developed to analyze HSC columns,confined by CFS,which were subjected to axial compression and biaxial bending.The results shown in this paper indicate that the ductility of HSC column is significantly improved and the strength is also increased by some degree.