The characteristics of reinforced crane beam with carbon fiber cloth

In industrial plants, the normal operation of crane beams directly affects the normal production. Especially for steel-making plants, cranes usually have large tonnage or even overload, and they operate frequently, which makes the crane beams break and crack from time to time. Most of the damage to the steel structure crane beam system of industrial plants is caused by fatigue, and due to factors such as high indoor temperature when the steel-making plant is used, most of the crane beams are broken before they reach the design service life. Although the traditional reinforcement method has a certain reinforcement effect (such as welding steel plate or section steel), it also increases the weight of the crane beam and the reduction of the space utilization rate, resulting in a redistribution of stress and stiffness, which is usually caused at the welded seam. Stress concentration causes fatigue cracks under the action of fatigue load, causing secondary fatigue damage to steel crane beams. Because carbon fiber cloth has high tensile strength, strong formability (for example, it can be well bonded with steel members at the corners of steel structures), corrosion resistance and fatigue resistance, the reinforcement effect on steel crane beams is better than traditional The method reinforcement effect is much better. Different reinforcement methods are used according to different diseases. For example, sticking carbon fiber cloth on the tensile surface of the component can improve the bending resistance of the component; in the fatigue part of the steel structure, by sticking carbon fiber cloth to increase the remaining fatigue life, etc., the carbon fiber cloth strengthens the steel component. The technical effect is remarkable, and the effect is immediate, and it has gradually become a hot topic of research by experts and scholars.