Radial gate, mainly composed of gate leaf, arm and hinge, is a widely used gate types in hydraulic structures. This study proposed an improved model structure of radial gate, On the basis of the traditional radial gate, a pressure rod is added to connect the support arm and the bifurcation point of the lower flange of the longitudinal beam. The improved model structure of radial gate is designed, simulated and analyzed by using the general finite element software ANSYS. The results illustrate that the stress value and displacement value of each component of radial rigid gate with compression bar arrangement are greatly reduced compared with traditional gate, among which the arm stress reduction and the longitudinal radial displacement reduction are up to 28.14%, and 27.35%, respectively. In addition, the overall ultimate bearing capacity increased by 26.80% with only a few increase of steel consumption; When the gate is closed without water, the natural frequency and amplitude response frequency of the improved gate are higher than that of the traditional gate, furthermore the response amplitude of each key node is reduced. Hence, this new design provides a high potential for the overall stability and the anti-vibration performance of traditional radial gate.

弧形闸门主要由门扇、门臂和铰链组成，是水工结构中应用广泛的闸门类型。本研究提出了一种改进的弧形闸门模型结构，在传统弧形闸门的基础上，增加了压力杆连接支撑臂和纵梁下翼缘的分叉点。采用通用有限元软件ANSYS对改进后的弧形闸门模型结构进行设计、仿真和分析。结果表明，采用压杆布置的径向刚性闸门各部件的应力值和位移值较传统闸门大幅降低，其中臂应力降低和纵向径向位移降低分别高达28.14%和27.35% ， 分别。此外，整体极限承载力提高了26.80%，钢耗仅增加少量；当闸门无水关闭时，改进闸门的固有频率和幅值响应频率高于传统闸门，而且各关键节点的响应幅值有所降低。因此，这种新设计为传统弧形闸门的整体稳定性和抗振性能提供了巨大的潜力。