Experimental study of carbon fiber cloth reinforced concrete frame under vertical load

carbon fiber cloth;  frame structure;  reinforcement;  cracks;  Bearing capacity

In order to study the influence of carbon fiber cloth reinforcement on the performance of frame structure, the test specimen of reinforced concrete frame structure reinforced with carbon fiber cloth was designed according to the 1∶3 scale model, and the experimental research analysis under vertical load was carried out. The test results show that the U-hoop with large cracks damaged concrete structure and small pasting spacing can effectively inhibit the crack development. Pasting carbon fiber cloth at the bottom of the beam can not only effectively delay the yield of the steel bar but also greatly improve the ultimate bending bearing capacity of the beam under the condition that the bonding anchorage is satisfied. Due to the restraining effect of carbon fiber cloth, the sectional bending stiffness of the reinforced rear beam is improved. The tensile force of the beam after the reinforcement of the carbon fiber cloth is borne by the steel bar and the carbon fiber cloth, the role of the carbon fiber cloth after the yield of the steel bar is significantly increased, and the main tensile force is borne by bearing, in order to prevent the carbon fiber cloth from suddenly pulling off, it is necessary to consider its effective utilization rate.