Abstract: To address the limitations of existing seismic devices for railway bridges in high-intensity seismic zones, such as weak energy-dissipation capacity and poor durability, a novel metal corrugated steel tube energy-dissipation device was proposed. Taking a long-span continuous beam bridge of a high-speed railway as the engineering background, the mechanical behavior of the device was first investigated using the finite element software ABAQUS, a full-bridge finite element model was established to compare the seismic responses and damping effects of three configurations: viscous dampers, seismic shear keys, and corrugated steel tube energy dissipation device. The results demonstrate that the proposed corrugated steel tube energy dissipation device exhibits full hysteretic loops and maintains excellent energy-dissipation and displacement-limiting performance even under large deformations. Full-bridge analysis further confirms its effective seismic mitigation capabilities. Moreover, Under the same yield strength, the unit price of this corrugated steel tube energy dissipation device is approximately 25% of that of viscous dampers and 60% of that of seismic pins used in bridges, reflecting significant economic benefits and engineering application value.