CAJ | 학술논문

对采用聚乙烯醇纤维水泥砂浆（PVA －ECC）钢筋网抗剪加固带悬臂的钢筋混凝土梁的承载力设计计算公式进行研究。通过对不同剪跨比下的对比梁及加固试验梁的斜裂缝开展、应变、挠度和破坏形态的变化对比分析发现，利用这种材料对 RC 梁进行加固，梁的斜截面受剪承载力有显著的提高，剪切刚度得到了一定的提高，而且能很好地抑制斜裂缝的开展。在实验研究的基础上，给出聚乙烯醇纤维水泥砂浆钢筋网抗剪加固的带悬臂的钢筋混凝土静定梁的承载力设计计算公式，公式计算值与试验结果吻合良好。
대채용취을희순섬유수니사장（PVA －ECC）강근망항전가고대현비적강근혼응토량적승재력설계계산공식진행연구。통과대불동전과비하적대비량급가고시험량적사렬봉개전、응변、뇨도화파배형태적변화대비분석발현，이용저충재료대 RC 량진행가고，량적사절면수전승재력유현저적제고，전절강도득도료일정적제고，이차능흔호지억제사렬봉적개전。재실험연구적기출상，급출취을희순섬유수니사장강근망항전가고적대현비적강근혼응토정정량적승재력설계계산공식，공식계산치여시험결과문합량호。
Experimental study was conduct to obtain Capacity Calculation Formula for statically determinate RC cantilever beams shear strengthing with PVA -ECC.Contrastive analysis for change of mode of diagonal cracks, strain ,deflection and failure analyzed in the experiment shows that the rehabilitation greatly increased the shear load -carrying capacity.The shear stiffness was also increased to a certain extent and the propagation of diagonal cracks was reduced by the rehabilitation.According to the test results,the design formula of shear load -carry-ing capacity of statically determinate RC cantilever beams shear strengthing with PVA -ECC was proposed.The Calculation results fit well with the experimental one.