三角闸门止水强度与变形的有限元分析

目前,止水的研究多在止水的布置、设计、施工等方面,而针对闸门工作状态下止水的受力能力与变形性能的研究较少。而且,关于止水性能的研究大多只针对止水自身,实际工程中,止水固定在船闸上共同受水头作用,因此考虑止水与船闸连接状态下的受力情况是有必要的。针对以上问题,以裕溪一线船闸扩容改造工程中34 m口门三角闸门为例,选取2个实际工况与2个附加工况对止水与闸门整体进行有限元仿真,分析各工况下止水的工作状态与受力、变形能力,得知止水的强度满足要求,底止水与边羊角止水处于压紧状态,变形适应性良好,中羊角止水对抑制缝隙扩大起到积极作用。

Finite element analysis of waterstop performance of triangular gate

At present,the research on waterstop is mostly in the layout,design,and construction,while that on the stress capacity and deformation performance of waterstop under the working state of the gate is less. Moreover,most of the research on the waterstop performance is only for the waterstop itself. In actual engineering,the waterstop is fixed on the ship lock and is jointly affected by the water head. Therefore,it is necessary to consider the force when the waterstop is connected to the ship lock. Taking the 34 m-entrance triangular gate in the Yuxi ship lock expansion and reconstruction project as an example,we select two actual working conditions and two additional working conditions to conduct finite element simulation on the waterstop and the gate as a whole and analyze the working state,stress and deformation performance under each working condition. The result shows that the strength of the waterstop meets the requirements. The bottom waterstop and the side horn waterstop are in a compressed state,and the deformation performance is favorable. The middle horn waterstop plays a positive role in restraining the expansion of the gap.