Dynamic failures of water controlling radial gates of hydro-power plants: Advancements and future perspectives

Xu, Chao; Liu, Jiliang; Chen, Zhao; Liu, Feng; Wang, Zhengzhong

doi:10.1016/j.engfailanal.2023.107168

Cited by 8 publications

(2 citation statements)

References 69 publications

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“…A hydraulic steel gate is the core component of large-scale water conservancy projects, and its safety and stability are the basic guarantee for the operation of water conservancy projects [1]. A radial gate is a typical space frame structure; it is widely used in various hydraulic projects because it has the advantages of light weight, small opening and closing force, no gate groove at the bottom edge, and easy operation [2].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Application of Radial Steel Gate Structure Based on Building Information Modeling under Different Opening Degrees

Sun,

Zhang,

Liu

et al. 2024

Water

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The safe and stable operation of the radial gate is highly essential for hydropower stations. As the dynamic load of gate, water flow generally causes the irregular distribution of strength, stiffness, and the stability of the gate structure. Traditional simulation technology is usually used to investigate the impact of water flow on gate structure; however, there is a lack of integration and interaction of building information modeling (BIM) and numerical simulation technology to study this issue. Therefore, this paper proposed a computational framework combing BIM and numerical simulation to calculate and analyze the large complex hydraulic radial steel structure. Firstly, the 3D model of the radial gate was established by MicroStation2020, then, the finite element model was output by using it. Secondly, the change laws of strength, stiffness, and stability of the radial gate were analyzed by Ansys-Workbench2020R2 under different opening degrees. The numerical simulation results show that the maximum equivalent stress value was 142.19 MPa, which occurred at the joint between the lower longitudinal beam and the door blade. The maximum deformation was 3.446 mm, which occurred at two longitudinal beams’ middle in the lower part of the panel. When the opening degree is 0.0 m–9.0 m, the natural vibration frequency increases irregularly with the increase in the opening of the gate. Three main vibration modes of the gate vibration were obtained. It proves that it is feasible to analyze the structural performance of radial gates by using BIM and numerical simulation. Finally, the BIM and numerical simulation information management process was established to make the simulation results more valuable. This study expands the application value of BIM and provides a new research idea for large complex hydraulic steel structural analysis. The information management process described in this research can serve as a guide for gate operation and maintenance management.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Application of Radial Steel Gate Structure Based on Building Information Modeling under Different Opening Degrees

Sun,

Zhang,

Liu

et al. 2024

Water

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“…Furthermore, on 2 July 1967, the SRG of the Wachi dam in Japan was damaged owing to the out-of-plane bucking instability of the supporting arms [10]. Gate vibrations are often caused by forced, self-excited, and parametric vibrations occurring at the same time in practical engineering [11].…”

Section: Introductionmentioning

confidence: 99%

Chaotic Characteristic Analysis of Spillway Radial Gate Vibration under Discharge Excitation

Lu,

Liu,

Zhang

et al. 2023

Applied Sciences

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This paper aims to assess the nonlinear vibration of a radial gate induced by flood discharge; the measured acceleration response data of a spillway radial gate are analyzed using the chaos theory. The results show that the vibration responses of the gate at three opening heights present clear chaotic characteristics, and the chaotic characteristics of the lower main beam point are greater than other points. Moreover, the y-direction (vertical) correlation dimensions of the three measuring points on the supporting arm are larger than those of the x-direction (axial) and z-direction (lateral). The vertical vibration of the supporting arm is more complex and presents more uncertainties, which should be paid attention to in the literature. Under three different gate opening heights, the maximum Lyapunov exponent of each measuring point ranges from 0.0246 to 0.0681. In addition, the flow fluctuation load is the main excitation source of the gate vibration chaotic characteristics.

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Underestimated dynamic instability regions of framed structures with multiple systems induced by autoparametric resonance

Liu,

Zhang,

Tian

et al. 2024

Nonlinear Dyn

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Dynamic failures of water controlling radial gates of hydro-power plants: Advancements and future perspectives

Cited by 8 publications

References 69 publications

Numerical Simulation and Application of Radial Steel Gate Structure Based on Building Information Modeling under Different Opening Degrees

Numerical Simulation and Application of Radial Steel Gate Structure Based on Building Information Modeling under Different Opening Degrees

Chaotic Characteristic Analysis of Spillway Radial Gate Vibration under Discharge Excitation

Underestimated dynamic instability regions of framed structures with multiple systems induced by autoparametric resonance

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