钢弧形闸门在不同水位作用下的模态分析

Q4 Environmental Science
Krzysztof Brusewicz, Witold Sterpejkowicz-Wersocki, R. Jankowski
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引用次数: 3

摘要

摘要随着保水需求的增加和规划的河流整治,研究包括钢水闸在内的水电站易损件的动力阻力可能是重要的。影响波兰水利工程结构的最常见的动力载荷包括由重型公路和铁路交通、打桩工程和采矿震动引起的振动。更多的破坏性动力荷载,包括地震,也可能发生在我国,尽管它们的发生率相对较低。然而,考虑到此类事件的不可预测性,以及它们可能造成的严重后果,作为水电站最脆弱的部件之一,钢水闸的抗震研究似乎很重要。在本研究中,分析了一种钢径向闸门。就水门而言,它是最受欢迎的解决方案之一,因为与普通闸门相比,它的重量相对较小。在ABAQUS软件中采用有限元法对某型钢径向闸门进行了模态分析。所有结构成员都使用壳单元建模,具有代表真实结构的详细几何形状。水被建模为影响结构的附加质量。采用不同的水位来确定工作钢水闸的最脆弱状态。模态分析的结果使我们能够比较频率及其特征模态在不同荷载下的响应,这是研究钢水门动力特性及其在极端动力荷载(包括地震)下的行为的第一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modal Analysis of a Steel Radial Gate Exposed to Different Water Levels
Abstract With the increase in water retention needs and planned river regulation, it might be important to investigate the dynamic resistance of vulnerable elements of hydroelectric power plants, including steelwater locks. The most frequent dynamic loads affecting hydroengineering structures in Poland include vibrations caused by heavy road and railway traffic, piling works and mining tremors. More destructive dynamic loads, including earthquakes, may also occur in our country, although their incidence is relatively low. However, given the unpredictable nature of such events, as well as serious consequences they might cause, the study of the seismic resistance of the steel water gate, as one of the most vulnerable elements of a hydroelectric power plant, seems to be important. In this study, a steel radial gate has been analyzed. As far as water gates are concerned, it is among the most popular solutions because of its relatively small weight, compared to plain gates. A modal analysis of the steel radial gate was conducted with the use of the FEM in the ABAQUS software. All structural members were modelled using shell elements with detailed geometry representing a real structure.Water was modelled as an added mass affecting the structure. Different water levels were used to determine the most vulnerable state of the working steel water gate. The results of the modal analysis allowed us to compare the frequencies and their eigenmodes in response to different loads, which is one of the first steps in researching the dynamic properties of steel water gates and their behaviour during extreme dynamic loads, including earthquakes.
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来源期刊
Archives of Hydroengineering and Environmental Mechanics
Archives of Hydroengineering and Environmental Mechanics Environmental Science-Water Science and Technology
CiteScore
1.30
自引率
0.00%
发文量
4
期刊介绍: Archives of Hydro-Engineering and Environmental Mechanics cover the broad area of disciplines related to hydro-engineering, including: hydrodynamics and hydraulics of inlands and sea waters, hydrology, hydroelasticity, ground-water hydraulics, water contamination, coastal engineering, geotechnical engineering, geomechanics, structural mechanics, etc. The main objective of Archives of Hydro-Engineering and Environmental Mechanics is to provide an up-to-date reference to the engineers and scientists engaged in the applications of mechanics to the analysis of various phenomena appearing in the natural environment.
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