混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
11期
66-69
,共4页
预裂%钢筋混凝土梁%预应力%碳纤维板%加固%抗弯试验
預裂%鋼觔混凝土樑%預應力%碳纖維闆%加固%抗彎試驗
예렬%강근혼응토량%예응력%탄섬유판%가고%항만시험
Pre-splitting%Reinforced concrete beam%Prestressed%CFRP plate%Reinforcement%Bending test
对3根梁进行了试验，一根为对比梁，一根为普通碳纤维板加固，一根为预应力碳纤维板加固，研究了碳纤维板对钢筋混凝土梁的加固效果。同时设计了一套较为可靠的张拉锚固设备，制定了一套较完整的张拉工艺。通过梁抗弯试验，对应变、挠度、承载力进行了研究。试验证明，加固梁的开裂荷载均有提高，但提高不明显，极限荷载提高幅度较大，且预应力碳纤维板加固梁较普通碳纤维板加固提高更多；在增加梁的刚度、降低延性发展方面，预应力碳纤维板加固效果更好；试验过程中碳纤维板未出现滑移，锚固效果良好，有效地延缓了碳纤维板的剥离破坏。
對3根樑進行瞭試驗，一根為對比樑，一根為普通碳纖維闆加固，一根為預應力碳纖維闆加固，研究瞭碳纖維闆對鋼觔混凝土樑的加固效果。同時設計瞭一套較為可靠的張拉錨固設備，製定瞭一套較完整的張拉工藝。通過樑抗彎試驗，對應變、撓度、承載力進行瞭研究。試驗證明，加固樑的開裂荷載均有提高，但提高不明顯，極限荷載提高幅度較大，且預應力碳纖維闆加固樑較普通碳纖維闆加固提高更多；在增加樑的剛度、降低延性髮展方麵，預應力碳纖維闆加固效果更好；試驗過程中碳纖維闆未齣現滑移，錨固效果良好，有效地延緩瞭碳纖維闆的剝離破壞。
대3근량진행료시험，일근위대비량，일근위보통탄섬유판가고，일근위예응력탄섬유판가고，연구료탄섬유판대강근혼응토량적가고효과。동시설계료일투교위가고적장랍묘고설비，제정료일투교완정적장랍공예。통과량항만시험，대응변、뇨도、승재력진행료연구。시험증명，가고량적개렬하재균유제고，단제고불명현，겁한하재제고폭도교대，차예응력탄섬유판가고량교보통탄섬유판가고제고경다；재증가량적강도、강저연성발전방면，예응력탄섬유판가고효과경호；시험과정중탄섬유판미출현활이，묘고효과량호，유효지연완료탄섬유판적박리파배。
The experiment of three beams which include a beam contrast, an ordinary carbon fiber reinforcement and a prestressed carbon fiber reinforcement, is carried out. The reinforced effect of carbon fiber slab on reinforced concrete beam is studied. At the same time, the tension anchor equipment is designed, and the complete tension technology is for-mulated. Through beam bending test, strain, deflection and capacity are studied. Experiment shows that cracking load of reinforced beam is increased, but not obvious, ultimate load increase is relatively improved, and prestressed reinforced concrete beams increases more than ordinary carbon fiber reinforced; in the aspect of increasing stiffness of the beam and decreasing ductility, reinforced effects of prestressed carbon fiber slab is better; slip does not occur during the experiment process, the anchor effect is good, which can effectively delay debonding failure of carbon fiber slab.
