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- Title
Static and Dynamic Study of Emersed Radial Gate Base on Gate-Dam System.
- Authors
LU Xiu-di; LIU Ya-kun; LU Yang-liang; FU Xue-min
- Abstract
Considering that the statics/dynamics analysis about the large emersed radial gate are always over-simplified by previous investigations, in this paper, the static and dynamic characteristics of single gate and gate-dam system are analyzed and compared in detail using the ANSYS finite element software. A finite element model (FEM) of gate-dam system considering seal friction, supporting hinge system and prestressed anchor cable is established based on the instantaneous opening condition of spillway radial gate of a hydropower station. The research results show that: in terms of statics, the two sides of the water seal have little influence on the stress distribution of the steel structure components in the gate, with a maximum difference of 14.08%; Also, more reasonable stress distribution of fixed hinge is obtained from gate-dam system comparing with that of single gate; Besides, the anchor block affects the overall displacement of the gate prominently, and the degree of effect can be sorted as: the overall displacement of the single gate < the integrated displacement of the gate dam without the prestressed anchor cable < the overall displacement of the gate dam with prestressed anchor cable. In terms of the dynamics analysis, frequency of the gate structure is reduced by the water seal when fluid-structure interaction effect is taken into account; And the prestressed anchor cable has little influence on the dynamic characteristics of gate-dam system.
- Subjects
DAMS; CONCRETE dams; FLUID-structure interaction; FINITE element method; STRESS concentration; STATICS
- Publication
China Rural Water & Hydropower, 2024, Issue 5, p256
- ISSN
1007-2284
- Publication type
Article
- DOI
10.12396/znsd.231351