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Wave-absorbing and energy-absorbing protective framework for improving anti-seismic property of concrete dam

A technology for concrete dams and seismic performance, applied in coastline protection, marine engineering, construction, etc., can solve problems such as jeopardizing the safety and stability of dams, reduce the probability of slipping surfaces, have novel structures, and improve anti-sliding stability. Effect

Active Publication Date: 2022-01-04
YELLOW RIVER CONSERVANCY TECHN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and problems existing in the existing equipment, the present invention provides a wave-absorbing and energy-absorbing protection frame that improves the seismic performance of concrete dams. When the dam is in normal operation, the shock waves brought by the upstream reservoir water and the seismic waves brought by the earthquake cause the vibration of the gravity dam, which makes cracks and extensions appear in the weakest part of the dam body, which endangers the dam's stability. Security and Stability Issues

Method used

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  • Wave-absorbing and energy-absorbing protective framework for improving anti-seismic property of concrete dam
  • Wave-absorbing and energy-absorbing protective framework for improving anti-seismic property of concrete dam
  • Wave-absorbing and energy-absorbing protective framework for improving anti-seismic property of concrete dam

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Embodiment 1

[0036] Embodiment 1: This embodiment aims to provide a wave-absorbing and energy-absorbing protection framework for improving the seismic performance of concrete dams, which is mainly used for wave-absorbing and energy-absorbing gravity dams. Shock waves brought by water and seismic waves caused by earthquakes cause vibrations on the gravity dam, causing cracks and extensions to appear in the weakest part of the dam body, endangering the safety and stability of the dam. This embodiment provides The invention discloses a wave-absorbing and energy-absorbing protection frame for improving the seismic performance of concrete dams.

[0037] Such as figure 1As shown in , this embodiment provides a wave-absorbing and energy-absorbing protection framework for improving the seismic performance of a concrete dam, including a wave-absorbing and energy-absorbing layer 2 and a floating energy-dissipating mechanism, wherein the wave-absorbing and energy-absorbing layer 2 is arranged on the ...

Embodiment 2

[0048] Embodiment 2: This embodiment is basically the same as Embodiment 1, the difference is that: this embodiment is provided with a torsion spring at the rotating shaft.

[0049] In this embodiment, the mounting plate is provided with corresponding shaft holes, and the left and right shaft sleeves 10 are placed in the shaft holes, and the rotating shaft is installed in the shaft sleeves 10 through torsion springs.

[0050] In the energy dissipation part of this embodiment, a torsion spring is installed on the rotating shaft. The torsion spring is used to absorb and store the initial kinetic energy of the water body, and then release the kinetic energy when it is reset. It is especially suitable for wave-like vibrations. The two ends of the torsion spring It is fixed in the rotating shaft and the shaft sleeve. In the initial state, the inclination angle of the energy dissipation grid is set so that when the water body fluctuates, it can impact the energy dissipation grid. The...

Embodiment 3

[0052] Embodiment 3: This embodiment is basically the same as Embodiment 1, and the difference is that a guide seat 13 is provided in the floating frame 6 in this embodiment.

[0053] Such as Figure 5 As shown in , the floating frame 6 is a U-shaped structure, the mounting plate 12 is arranged at the opening, and a guide seat 13 is arranged on the rear side wall of the floating frame, and the guide seat 13 is located on the mid-perpendicular line of the two rotating shafts.

[0054] In this embodiment, the water flow impacts the energy dissipation grids 9, and enters the floating frame from the gap between the two energy dissipation grids 9, and acts on the guide seat 13, and uses the guide seat 13 to make the water flow to both sides, It has the function of drainage, so that the incoming water flow and the discharged water flow meet to reduce kinetic energy.

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Abstract

The invention belongs to the technical field of gravity dam vibration safety and wave absorption and energy absorption, and particularly relates to a wave absorption and energy absorption protection framework for improving the anti-seismic property of a concrete dam, the structure is novel, a wave absorption and energy absorption layer is arranged to protect the surface of a dam body, and the wave absorption and energy absorption layer serves as a buffer layer; the density degree of wave crests of transverse waves and longitudinal waves can be effectively reduced, the intensity level of the acting transverse waves and longitudinal waves on the gravity dam can be reduced, then a more reasonable anti-seismic structure can be achieved in the gravity dam, coincidence of bed rock of a dam heel of the gravity dam and a cementing face can be better protected, the probability of a slip crack face is reduced, and the service life of the gravity dam is prolonged. And meanwhile, the floating energy dissipation mechanism is used for further protecting the horizontal plane of the upstream water body, the problem of dam body vibration caused by transverse and longitudinal waves brought by the upstream reservoir water is effectively solved, the influence of vibration brought by water body impact on the dam body is reduced, and the stability of the dam body is improved.

Description

technical field [0001] The invention belongs to the technical field of gravity dam vibration safety and wave dissipation and energy absorption, and in particular relates to a wave dissipation and energy absorption protection frame for improving the seismic performance of concrete dams. Background technique [0002] At present, there are frequent flood disasters in summer in China, so people realize the importance of hydraulic structures. They mainly use normal and roller compacted concrete and other materials for construction, and use their own gravity to meet the stability and strength requirements, but It is far from enough in the anti-seismic work of hydraulic structures. When people choose concrete, the main considerations are strength, impermeability, frost resistance, and erosion resistance. However, many design projects only meet the requirements of earthquake resistance to a limited extent, and there are no specific measures in shock absorption engineering. It can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
CPCE02B8/06Y02A10/11
Inventor 张翌娜张建伟陈磊曹克磊黄锦林王勇
Owner YELLOW RIVER CONSERVANCY TECHN INST
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