Fig 1 - uploaded by Matteo Camporese
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Sketch of a miter gate by Leonardo Da Vinci (ca. 1490, Codex Atlanticus). © Veneranda Biblioteca Ambrosiana – Milano/De Agostini Picture Library
Source publication
Miter gates have been, and still are, widely used in hydraulic engineering as control devices for several types of locks (e.g., navigation, flood, tidal). For centuries, engineering practice has suggested a range of optimal values for the angle that the gate leaves must form pointing upstream, facing the current. According to experience and literat...
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Citations
... With the development of computational technology, finite element software is often used in the calculation of miter gates. Camporese [1] used geometric parameterization and static equilibrium conditions to determine the preliminary dimensions of the miter gate leaf after optimization. In addition, in order to formulate a scientific, reasonable, and effective gate maintenance program, some scholars have conducted relevant research on it. ...
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... Zhao et al. / Simulation Reliability Analysis of Miter Gate Test Benchwhere H is the height of the gate. G is the gate weight.1 ...
It is a common method to build a scaled-down test bench to simulate a large mechanical equipment movement to research its fatigue damage characteristics. However, few studies have confirmed that the damage features of the test bench correspond to the equipment itself. In this paper, in order to study the fatigue damage mechanism of the hydraulic miter gate and predict the life of its key components, we designed a test bench in accordance with a certain reduction in proportion based on the No.2 miter gate of Gezhouba dam. The finite element models of the actual gate and the test gate are established respectively, and their deformation and stress distribution are analyzed depending on the strength of the door in different working conditions. The results show that the variation law of the stress and strain distributions of the test gate and the actual gate are basically the same. Therefore, the damage position of the miter gate test bench should be consistent with the corresponding position of the actual gate, and it is reliable to use the designed test bench to find the damage of the actual gate.
... Nowadays, the research on miter gates mainly contributes to the structure stress or fatigue [1][2][3][4][5][6]. For example, Ming [1] made a theoretical analysis of a miter-type lock gate structure subjected to hydrostatic pressure and found that the failure modes were decisively dependent on the mitered angle. ...
... For example, Ming [1] made a theoretical analysis of a miter-type lock gate structure subjected to hydrostatic pressure and found that the failure modes were decisively dependent on the mitered angle. Camporese [2] used static equilibrium considerations for the preliminary dimensioning of miter gate leaves based on the optimization of the angle between the leaves and suggested appropriate angles. Riveros [7] applied three-dimensional numerical simulation to study the optimum prestressing on diagonals in the miter gate, which allowed the prediction of optimum prestressing levels without compromising the torsional capacity. ...
Generally, the operation of the horizontally-framed miter gate in a ship lock should consider the effects of hydrodynamic resistance. If over-filling or over-emptying exists and the miter gate opens with reverse head, the hydrodynamic resistance will increase rapidly, endangering the operation safety of the miter gate. In order to study the operating characteristics of the miter gate, a prototype test is introduced in this paper. Results show that, during the filling or emptying process, when water levels at both sides of the miter gate are equal the first time, opening the gate in a timely manner can obviously avoid the influence of reverse head. Furthermore, a three-dimensional numerical model with a dynamic mesh is established for analyzing the hydrodynamic characteristics in different operating conditions. Results show that the peak value of operating load always occurs at the initial time, and the greater the submerged water depth, the larger the peak value. With the increasing of reverse head, the piston rods sustain a great compression, and the peak value appears at an early stage of gate opening. The results have a reference value for the design of a miter gate in the related engineering projects.
