Numerical Calculation of Static Strength Performance of Planar Gate Structures
Zhang Fan *
School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou, China.
*Author to whom correspondence should be addressed.
Abstract
As an important part of the ecological environment, rivers provide an important guarantee for the production and life in China. At present, domestic and foreign for the construction of the gate has been gradually shaped, hydraulic steel gate gradually developed as a hydroelectric power station high head, flood discharge flow of large gate type, the smooth opening and closing of the gate is related to the entire water conservancy hub and downstream of the safety of the residents' lives. For the safety of plane gate, this paper adopts Ansys software to establish a finite element model of plane gate, and calculates the most dangerous point stress of plane gate by considering its most unfavourable loading condition. At the same time, the service life of the allowable stress reduction was considered. The analysis results show that the planar gate meets the strength safety. The main beam is simplified into slender beam and thin-walled deep beam, and the calculation formula of slender beam in the mechanics of materials and thin-walled deep beam in the literature is used to calculate the positive bending stress in the mid-span cross-section of the main beam of the gate, and a comparative analysis is carried out with the results of Ansys, which shows that the positive bending stress in the mid-span cross-section of the main beam obtained by simplifying the main beam into a thin-walled deep beam is more close to the results of Ansys calculation. The results of this paper provide an important reference for the structural strength analysis of planar gates.
Keywords: Planar gate, modal analysis, strength analysis, finite element
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References
Wu Y. Study on flow-excited vibration characteristics of planar steel gates [D]. Zhengzhou University,2021. DOI: 10.27466/d.cnki.gzzdu.2021.001772
Chen Yang. Research on vibration characteristics and stability of plane steel gate with fluid-solid coupling [D]. Shandong Agricultural University; 2019.
Zheng Yajun, Wang Kai, Lei Xingchun, et al. Three-dimensional numerical simulation of pump station inlet flow channel based on RNG turbulence model[J]. Hydropower Energy Science. 2008;26(06): 123-125. DOI: 10.3969/j.issn.1000-7709.2008.06.036
SUN Xiaofeng, MA Yiquan. Research status and development trend of hydraulic gate vibration problem [J]. China Science and Technology Information. 2010;(23): 152-154. DOI: 10.3969/j.issn.1001-8972.2010.23.071
TANG KD, WANG XS, SUN LIUYING. Numerical simulation of flow-solid coupling of arc gate at different openings[J]. People's Yellow River. 2019;41(02):135-13. DOI: 10.3969/j.issn.1000-1379.2019.02.029
SL74-2013, Design specification for steel gates for water conservancy and hydropower projects [S]. Beijing: China Water Resources and Hydropower Press; 2013.
W. Song. Three-dimensional numerical simulation of upstream and downstream pressurised water flow through gates [D]. Kunming University of Science and Technology; 2020. DOI: CNKI:SUN:ZNSD.0.2019-12-025
Liu Jiliang. Research on the strength and dynamic stability analysis method of the main frame of high head curved steel gate[D]. Northwest Agriculture and Forestry University; 2016.
Cao Huiying, Ma Renchao, Yu Junyang. Distribution and transfer of water load among the main force components of curved gates[J]. People's Yangtze River. 2022;53(01):160-166. DOI: 10.16232/j.cnki.1001-4179.2022. 01.025
Yan TY, Li TC, Zhao LH, et al. Comparison of finite element methods for solving section internal forces[J]. Hydropower Energy Science. 2008(03):141-143. DOI: CNKI:SUN:SDNY.0.2008-03-042