船闸反弧门设计要点

反弧门设计边界条件复杂、计算参数难以选定，目前缺乏相关设计指导文献，设计难度大。通过大藤峡船闸反弧门相关的模型试验研究，并总结葛洲坝、三峡和大藤峡船闸反弧门设计经验，得出可有效抑制空化现象的廊道体形；依据闭门速度快慢选取动水荷载系数；采用全包板门体结构和流线型底缘可减小水流扰动，改善流态，减小气蚀破坏；启闭力计算时需要考虑水柱力和水阻力等设计要点和合理化建议。

Key points of design for reverse radial gate of ship lock

In response to the complex boundary conditions and difficulty in determining calculation parameters for the design of the reverse radial gate,as well as the lack of relevant design guidance literature and high design difficulty,we carry out the model test research on the reverse radial gate of the Datengxia ship lock,and summarize the design experience of the reverse radial gate of Gezhouba,Three Gorges,and Datengxia ship locks.we obtain a corridor shape that can effectively suppress cavitation phenomenon,select the dynamic water load coefficient based on the speed of closing the door.Adopting a fully enclosed door structure and streamlined bottom edge can reduce water flow disturbance,improve flow patterns,and reduce cavitation damage.The calculation of the opening and closing force needs to consider design points and rationalization suggestions such as dynamic water resistance and water column force.