关于背拉杆对人字钢闸门力学性能影响的研究

RESEARCH ON THE EFFECT OF BACK TIE RODS ON STEEL MITER GATE IN MECHANICAL PROPERTIES

为研究背拉杆对人字闸门力学性能的影响,应用Adina软件建立闸门空间有限元分析模型。建立采用无背拉杆、非预应力背拉杆和预应力背拉杆的3种人字闸门模型,分别计算其在自然悬挂、开门、关门3种工况下的抗扭刚度以及开门、关门两种工况下的自振频率,并进行对比分析。结果表明:背拉杆对人字闸门的抗扭刚度提高起到积极作用,但对改善人字闸门自振特性的作用效果不明显。

To study the effect of back tie rods on miter gate in mechanical properties, the finite element method was applied to establish a spatial analysis model with Adina. Three miter gate models were established with no back tie rods, non-prestressd and pretressed back tie rods. The torsional rigidity on miter gate in different conditions of self-hanging, gates-open and gates-closed was discussed, and the comparative analysis of natural frequency of vibration in different conditions of gate-open and gate-closed was discussed. The results showed that back tie rods played an active role in improving the torsional rigidity of miler gate. However, the effect of improving the natural frequency of vibration of the miter gate was not obvious.