Study on Scheme Optimization of bridge reinforcement increasing ratio

Abstract The bridge reinforcement methods, each method has its advantages and disadvantages. The load-bearing capacity of bridge members is controlled by the ultimate strain of concrete in the compression zone or the ultimate strain of reinforcement in the tension zone, so the selection of the bridge reinforcement method is affected by the section reinforcement ratio. When the reinforcement ratio of the section is between the minimum reinforcement ratio and the critical reinforcement ratio, we should choose the beam bottom reinforcement plan; when the section reinforcement ratio is between the critical reinforcement ratio and the maximum reinforcement ratio, it should be adopted Reinforcement method of bridge deck reinforcement layer.