During the operation of ship locks,the triangular gates may experience abnormal vibrations during the water discharge process due to stress concentration,wear,and hidden faults in the supporting components.These vibrations pose a serious threat to the operational safety and structural durability of the gates.However,the stress characteristics of the triangular gates and their supporting components during the water discharge process are not fully understood.This study focuses on the triangular gates of a certain ship lock in our country,establishing a three-dimensional finite element numerical model based on the geometric dimensions of its prototype structure.Using numerical simulation methods,the study analyzes the load response characteristics of the triangular gates and their supporting components under different water level differences during the water discharge process.It reveals the stress distribution patterns between the gate leaf and the supporting components and clarifies the key sensitive areas and their stress response relationships.The results indicate that typical stress-sensitive areas exist in lock gates and supporting components.By measuring the characteristic response parameters from these stress-sensitive areas,the correlation between the leaf and the top pivot,as well as between the leaf and the bottom pivot,has been quantified.This allows for the preliminary dynamic assessment of the operational status of concealed supporting components (such as the bottom pivot) through real-time monitoring of response parameters (e.g.,stress,strain,vibration acceleration,etc.) in the stress-sensitive areas of the gate leaf and top pivot.The findings provide a theoretical basis for real-time monitoring of the operational status of triangular gates in navigation locks,contributing to the advancement of intelligent operation and maintenance in lock engineering.