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三峡升船机上闸首工作门止水结构主要采用P型水封。针对升船机对闸首工作门的水密性要求较高,工作门止水的封水效果不良将影响升船机安全、平稳运行的问题,基于非线性有限元理论,采用有限元分析软件ABAQUS建立上闸首工作门止水结构有限元模型。通过计算,得到不同宽度止水压板在不同预压缩量作用下的接触应力、接触宽度等。考虑接触摩擦,对橡胶止水与止水座板接触面赋于不同摩擦系数模拟计算了P型水封有聚四氟乙烯敷面与没有敷面对封水效果的影响。该结果为上闸首工作门水封结构优化改造提供了可靠理论依据。
Three Gorges ship lift gate work at the top of the main water-stop structure using P-type seal. Aiming at the high watertightness requirements of liftgate on the work gate, the poor water sealing effect of working gate will affect the safe and smooth operation of lift ship. Based on the nonlinear finite element theory and finite element analysis software ABAQUS Establish the finite element model of the water shut-off structure of the first work gate. Through the calculation, the contact stress, contact width and the like of the water-pressure plate with different width under the different pre-compression amount are obtained. Considering the contact friction, the effect of the P-type water seal with Teflon coated surface and the non-coated surface effect on the sealing effect was simulated on the contact surface of the rubber seal and the seal plate with different friction coefficient. The result provides a reliable theoretical basis for the optimization and reformation of the water gate structure of the first work gate.