Finite element analysis of the seismic performance of wind and rain bridge.

The traditional architecture of the Dong and other ethnic minorities show cases unique architectural skills. Its conservation is significant for maintaining the diversity of national culture and transmitting traditional craftsmanship. This study used ABAQUS software to analyse the mechanical properties of two typical wind and rain bridge structures. The results show that the arch bridge structure of Model 2 is significantly better than the simply supported beam bridge structure of Model 1 in terms of load-bearing capacity. Specifically, the mid-span deflection of Model 2 is only approximately 7% of that of Model 1. In addition, the El-Centro seismic wave was selected as the excitation data for this study, and the time-history analysis was performed according to the 7-degree seismic fortification standard. The results demonstrate that the arch bridge structure of Model 2 also performs well in terms of seismic performance, with lower acceleration responses at both mid-span analysis points compared to that of Model 1. These findings provide a scientific basis for the structural optimisation of wind and rain bridges and offer valuable insights into the modern conservation and continuation of traditional architectural heritage.