开敞式人字闸门启闭时的有限元分析

本文应用一种由平面应力单元和轴力杆件单元组成的空间有限元模型,对大型船闸开敞式人字闸门启闭时的变形与应力进行了全面的计算。计算结果表明此类人字闸门在风、水荷载及自重作用下的整体变形规律,横截面剪应力分布规律,背拉杆受力规律均与模型试验,近似计算及有关资料中原型观测、模型试验及计算结果相一致。门叶结构总重量及重心计算成果理想地反映了设计情况。本文还对人字闸门的底枢受力情况进行了初步分析。本文对开敞式人字闸门所作的计算,进一步论证了所应用的力学模型与采用的程序可供大型船闸人字闸门在设计计算中采用,提供的计算结果可供有关部门在人字闸门的设计中参考。

Finite Elemet Analysis for Λ-shaped Dock Gate

In this paper, the stress and strain of thě V-shaped do k gate are analysed by means of the finite element method using a space model with plane stress elements and on■-limensional discrete elements when the gate is closed or opened. All the calculated results show that under the action of the wind load, the water loa ■ and the dead load, the deformation of the gate, the shear stress in the crosssectior, and the internal force of the member in tension give a good agreement with the experimented results and num r cal solution in the references.The calculating results of the dead load and the grav ty mirror the ideas of the original design. The stress of the gate p■v t is also analysed roughly.Therefore, the methanical model and the program may be used in the practical design of su■h a big Λ-haped do■k gate. Also, the data and resu■ts presert d in this paper might be used for reference.