Resistance of Reinforced Concrete Structures and Their Road Load-Bearing Properties to Disasters

In the face of frequent natural disasters, the resilience of reinforced concrete structures is critical to the safety of life and property. Especially in the southeastern coastal areas, the seismic resistance of bridges is of great importance to improve the load-bearing capacity of roads. The objective of this study is to evaluate the shear bearing capacity of reinforced concrete piers under different stirrup ratios, rust ratios, and axial compression ratios. Accordingly, this study employs an orthogonal experimental design and modeling of the structure, with subsequent analysis of its performance. The results showed that increasing the stirrup ratio increased the cumulative hysteresis energy consumption of the specimen by 26.84%. Increasing the axial compression ratio reduced the cumulative hysteresis energy consumption by 9.72%. Increasing the rust ratio reduced the cumulative hysteresis energy consumption by 6.60%. Bridge piers with low axial compression ratios exhibited better compressive strength and energy dissipation characteristics during earthquakes. This indicates that increasing the stirrup ratio can effectively improve the shear capacity of reinforced concrete bridge piers. Controlling the corrosion rate helps to maintain the energy dissipation capacity. Bridge piers with low axial compression ratio have better compressive strength and energy dissipation characteristics during earthquakes. This provides practical guidance for bridge design in disaster-prone areas, helping to reduce disaster losses and ensure human safety.