船闸三角门三支铰联接螺栓断裂分析

Analysis of break of joint bolts of three support pivots of ship lock triangle gate

针对船闸闸门三支承铰联接螺栓存在的断裂问题,结合对其进行的检测与研究,分析了支铰联接螺栓断裂原因,指出支铰联接螺栓的断裂主要是由于三支铰轴不同心,支铰轴同心度存在较大偏差所造成的;同时,螺栓材质选用不当及螺栓松动亦加速了螺栓的断裂。还分析研究了闸门在不同支承约束情况下,构件应力的分配变化规律,提出了相应的改进措施和建议。

Study on the causes of break of joint bolts of three support pivots of water gate of ship lock was conducted based on the inspection and investigation on the bolts. The study has indicated that unconcentricity and deviation of concentricity of the three support pivots are the primary causes of the breaking of bolts. On the other hand, unsuitable material of bolts and loosing of bolts have also accelerated the breaking of bolts. The distribution of stress of structures of water gate under conditions of different support restraints is analyzed and some advices are given to improve the design and construction.