Base isolation-tuned mass damper shock isolation and vibration absorption device for nuclear power plant without earthquake risk

A technology of frequency modulation mass damping and foundation isolation, which is used in infrastructure engineering, earthquake resistance, building components, etc., to achieve stable shock absorption and good seismic robustness.

Inactive Publication Date: 2018-08-24
HARBIN ENG UNIV
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  • Base isolation-tuned mass damper shock isolation and vibration absorption device for nuclear power plant without earthquake risk

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[0014] The present invention aims at the special anti-seismic requirements that the structure and equipment of the nuclear power plant are not allowed to be damaged by earthquakes under any earthquake action, and at the same time, it is considered that it is difficult or impossible to predict the magnitude and frequency spectrum characteristics of earthquakes at the current level of science and technology, and traditional structures and anti-seismic design methods cannot Meet the special anti-seismic safety requirements of nuclear power plants.

[0015] The invention applies the basic shock isolation-frequency modulation mass damper (BIS-TMD) hybrid shock absorption technology, and proposes a BIS-TMD novel shock-isolation and shock-absorbing structure that meets the special shock-resistance requirements of nuclear power plants. Specifically: firstly, according to the excellent cycle of the site and the dynamic characteristics of the nuclear power plant structure, the equivalent...

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Abstract

The invention relates to a base isolation-tuned mass damper shock isolation and vibration absorption device for a nuclear power plant without earthquake risk. The base isolation-tuned mass damper shock isolation and vibration absorption device is characterized by comprising a base shock isolation base structure and a tuned mass damper structure. The tuned mass damper structure is of a shell structure with a circular cross section, and includes a tuned mass damper main structure and a tuned mass damper substructure. The main structure and the substructure are connected by at least two tuned mass damper support units, and the substructure is located above the main structure. Each of the tuned mass damper support units is composed of support stiffness and support damping, and is sealed by a flexible sealing device. The tuned mass damper main structure is connected with the base shock isolation base structure through at least two base shock isolation support units, and each of the base isolation support units is composed of support stiffness and support damping. The base isolation-tuned mass damper shock isolation and vibration absorption device for the nuclear power plant without earthquake risk is good in seismic robustness and stable in shock absorption effect, and has no special requirements of a site, implementation of the device is simple, and the anti-seismic safety of the structure of the nuclear power plant is greatly improved.

Description

technical field [0001] The invention relates to a shock absorbing device, in particular to a shock-isolation-frequency-modulated mass damper shock-isolation and shock-absorbing device for a nuclear power plant foundation without earthquake risk. Background technique [0002] The safety of nuclear power plants has been widely questioned because there have been several serious nuclear power plant accidents in history. For example, the Three Mile Island nuclear power plant accident in the United States in 1979. Because of the misjudgment of the operator, the water was drained through the drain valve by mistake, causing the core circuit to lose water and the core to melt. The most serious nuclear accident in history was the accident at the Chernobyl nuclear power plant in the Soviet Union in 1986. Because the design of the Chernobyl nuclear power plant was flawed, the reactor exploded out of control, resulting in a nuclear leak. Since the reactor is not protected by a containme...

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Application Information

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IPC IPC(8): E04B1/98E04B1/36E04H9/02E02D27/34
CPCE02D27/34E04B1/36E04H9/021E04H9/0215
Inventor 侯钢领王炳媛王晓东孙海
Owner HARBIN ENG UNIV
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