锈蚀对弧形钢闸门静力性能的影响分析

The Influence of Corrosion on Static Performance of Radial Steel Gates

以七一水库弧形钢闸门为研究对象,重点对闸门面板、主梁、支臂等部位进行涂层厚度检测与锈蚀检测,并分析检测结果;结合检测数据和设计图纸分别建立锈蚀前后的弧形钢闸门三维有限元模型,对锈蚀前后的弧形钢闸门静力性能进行计算,并分析模拟各构件不同锈蚀深度情况下对弧形钢闸门静力性能的影响。分析结果可知:锈蚀对弧形钢闸门面板、主梁、支臂等构件的应力分布影响十分有限,但会增大相应构件的应力值;锈蚀对钢闸门静力性能的影响主要体现为承载力降低,对刚度的影响较小;特定部位的锈蚀会对弧形钢闸门各个构件的强度都造成不同程度的削弱;锈蚀程度的加深将加速闸门构件强度的降低。

Taking the radial steel gate of Qiyi Reservoir as the research object,this paper emphasizes the coating thickness and corrosion detection of the gate panel and main beam and support arm,and analyzes the detection results.Combined with the inspection data and design drawings,three-dimensional finite element models of the radial steel gate before and after corrosion are established,and the static performance of the radial steel gate before and after corrosion is calculated,and the influence of different corrosion depths on the static performance of the radial steel gate is analyzed and simulated.The analysis results show that corrosion has a very limited influence on the stress distribution of the radial steel gate panel,main beam and support arm,but it will increase the stress value of the corresponding components.The influence of corrosion on the static performance of steel gate is mainly reflected in the decrease in bearing capacity and the little influence on stiffness.Corrosion in specific parts will weaken the strength of each member of radial steel gate to varying degrees.The deepening of corrosion will accelerate the reduction of the strength of gate members.