CN216475686U - Compound shock insulation shock mitigation system of nuclear power structure - Google Patents

Compound shock insulation shock mitigation system of nuclear power structure Download PDF

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Publication number
CN216475686U
CN216475686U CN202121312640.8U CN202121312640U CN216475686U CN 216475686 U CN216475686 U CN 216475686U CN 202121312640 U CN202121312640 U CN 202121312640U CN 216475686 U CN216475686 U CN 216475686U
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China
Prior art keywords
box body
side wall
nuclear island
island structure
shock
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CN202121312640.8U
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Chinese (zh)
Inventor
杨杰
黄小林
豆燚
李韶平
葛鸿辉
褚濛
孙渝刚
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Shanghai Nuclear Engineering Research and Design Institute Co Ltd
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Shanghai Nuclear Engineering Research and Design Institute Co Ltd
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Priority to CN202121312640.8U priority Critical patent/CN216475686U/en
Priority to PCT/CN2021/123484 priority patent/WO2022257312A1/en
Priority to BR112023025549A priority patent/BR112023025549A2/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/36—Bearings or like supports allowing movement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/024—Supporting constructions for pressure vessels or containment vessels
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

The utility model aims to disclose a composite shock insulation and absorption system of a nuclear power structure, which comprises a box body with high rigidity, wherein the box body consists of box body side walls and a box body bottom plate, and an independent space for arranging a deep-buried nuclear island structure is arranged in the box body; arranging a plurality of shock insulation supports between the bottom of the nuclear island structure and the box body, and connecting the shock insulation supports with the bottom of the nuclear island structure and the bottom of the box body to form a shock insulation system; arranging a plurality of layers of damping devices between the side wall of the nuclear island structure and the side wall of the box body to form a damping system; the vertical damping device is connected with the side wall of the nuclear island structure and the side wall of the box body through the cantilever arm structure, and the horizontal damping device is directly connected with the side wall of the nuclear island structure and the side wall of the box body; compared with the prior art, the plant site adaptability of the small reactor power station is greatly improved, and the power station is built under the complex geological condition; the standardized design of a small reactor power station is realized, the design period of the power station is greatly shortened, the design cost is reduced, and the aim of the utility model is realized.

Description

Compound shock insulation shock mitigation system of nuclear power structure
Technical Field
The utility model relates to a composite shock insulation and absorption system, in particular to a composite shock insulation and absorption system of a nuclear power structure.
Background
In recent years, small nuclear reactor power plants have been gaining favor from various countries due to their own advantages. The United states, Russia and China gradually invest more manpower, material resources and financial resources to research and develop heap types of various types so as to improve the energy safety of the nation. Since small piles of power stations are built mainly to meet civil and military related energy requirements in different regions, site selection of small reactor nuclear power stations often encounters very complex geological conditions, which brings great challenges to standardized design. In order to reduce the design cost, improve the adaptability of the plant site of the standard design and improve the overall safety of the nuclear power station, the foreign subpiles adopt a deep-buried and shock-insulation design scheme, namely, a part of the structure of the nuclear island is buried below the ground surface and a shock-insulation device is arranged on the substrate.
In a traditional seismic isolation design method, a seismic isolation support with low rigidity is usually additionally arranged at the bottom of a structure to change the overall dynamic characteristic of the structure, so that the response of the structure under the action of an earthquake is reduced. Most of the existing seismic isolation engineering design cases are dedicated to control of horizontal earthquakes, however, a large number of strong seismic observation records and seismic damage records show that in high-intensity areas, the influence of seismic motion vertical components on special structures such as nuclear power stations and the like cannot be ignored.
A plurality of scholars at home and abroad develop researches on a three-dimensional shock isolation technology and provide schemes such as a thick rubber three-dimensional shock isolation support, a laminated rubber and disc spring combined three-dimensional shock isolation support, an air spring rubber pad three-dimensional shock isolation support and the like. However, most seismic isolation bearings achieve the purpose of three-dimensional seismic isolation by reducing vertical stiffness. Under vertical and horizontal coupling seismic action, because reasons such as support superstructure self rigidity asymmetry and barycenter, the incomplete coincidence of rigid center, the use of above-mentioned three-dimensional isolation bearing can make the structure produce great rocking motion, brings very serious destruction for support and structure.
Therefore, a composite shock insulation and absorption system for a nuclear power structure is particularly needed to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a composite shock insulation and absorption system for a nuclear power structure, which solves the problem of swinging and overturning of a nuclear island structure, effectively controls the vertical response of the structure and improves the shock resistance of the structure aiming at the defects of the prior art.
The technical problem solved by the utility model can be realized by adopting the following technical scheme:
a composite shock insulation and absorption system for a nuclear power structure is characterized by comprising a box body with high rigidity, wherein the box body consists of a box body side wall and a box body bottom plate, and an independent space for arranging a deep-buried nuclear island structure is arranged in the box body; arranging a plurality of shock insulation supports between the bottom of the nuclear island structure and the box body, and connecting the shock insulation supports with the bottom of the nuclear island structure and the bottom of the box body to form a shock insulation system; arranging a plurality of layers of damping devices between the side wall of the nuclear island structure and the side wall of the box body to form a damping system; the vertical damping device is connected with the side wall of the nuclear island structure and the side wall of the box body through the cantilever arm, and the horizontal damping device is directly connected with the side wall of the nuclear island structure and the side wall of the box body.
In an embodiment of the utility model, the side wall of the box body is a corbel type retaining wall structure or an anchor-pull type retaining wall structure, and the height of the side wall of the box body is determined according to the burial depth of the nuclear island structure.
In one embodiment of the utility model, the bottom plate of the box body is of a flat plate type structure, a beam plate type structure or a pile raft structure.
In one embodiment of the utility model, foundation piles are arranged at the bottom of the box body, and the foundation piles adopt fully-verified pile types such as precast piles or cast-in-place piles.
In one embodiment of the utility model, the seismic isolation system adopts seismic isolation supports widely used in current engineering, the number of the seismic isolation supports is determined by calculation, and the equivalent mass center of the seismic isolation supports is basically superposed with the core and the upper nuclear island structure.
In one embodiment of the utility model, the damping device adopts a hydraulic viscous damper or other mature tension-compression bidirectional damping devices; the number of the layers of the shock absorption devices is determined through calculation of a specific structural scheme but is not less than 1, the number of the layers of the shock absorption devices is determined through calculation according to the deformation characteristics of the nuclear island structure and stress, and more shock absorption devices are arranged at the positions with larger deformation.
In an embodiment of the utility model, the clear space between the side wall of the box body and the side wall of the nuclear island structure is determined according to the installation requirement of the damping device and the displacement requirement of the shock insulation nuclear island.
In one embodiment of the utility model, when an earthquake occurs, the composite shock insulation and shock absorption system for the nuclear power structure applies a reaction force to the shock insulation nuclear island structure through the shock absorption device to suppress the swinging effect of the shock insulation system and control the vertical acceleration response of the structure.
Compared with the prior art, the composite shock insulation and absorption system for the nuclear power structure has the advantages that the box body serves as an additional radiation protection structure, so that the nuclear fuel leakage risk is reduced; based on the arrangement characteristics of a deep-buried structure, the shock insulation and damping device is used in a combined manner, so that the advantages are made up for the disadvantages, and the safety of the nuclear island structure under the action of an earthquake and the earthquake resistance are greatly improved; the seismic isolation system is arranged by comprehensively considering the mass and rigidity distribution characteristics of the nuclear island structure, and the torsional motion of the nuclear island under the action of an earthquake is reduced by the coincidence of the mass center and the rigid center; the spatial arrangement scheme of the damping system meets the stress and deformation characteristics of the nuclear island structure, and the swinging effect and vertical response are reduced to the maximum extent; the site adaptability of the small reactor power station is greatly improved, and the power station can be built under complex geological conditions; the standardized design of the small reactor power station is realized, and for different plant sites, only the shock insulation and damping system needs to be evaluated again, so that the design period of the power station is greatly shortened, the design cost is reduced, and the aim of the utility model is fulfilled.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the composite seismic isolation and absorption system of the nuclear power structure;
FIG. 2 is a schematic structural diagram of a composite seismic isolation and absorption system of a nuclear power structure according to a second embodiment of the utility model;
FIG. 3 is a schematic structural diagram of a third embodiment of the composite seismic isolation and absorption system for the nuclear power structure of the utility model;
FIG. 4 is a schematic structural diagram of a fourth embodiment of the composite seismic isolation and absorption system for the nuclear power structure of the utility model;
FIG. 5 is a schematic structural diagram of a fifth embodiment of the composite seismic isolation and absorption system for the nuclear power structure.
The system comprises a box body bottom plate, 2-box body side wall supporting arms, 3-box body side wall panels, 4-vertical damping devices, 5-upper extending arm cantilever beams, 6-middle extending arm cantilever beams, 7-bottom extending arm cantilever beams, 8-shock insulation supports, 9-nuclear island structure side walls, 10-nuclear island structure bottom plates, 11-horizontal damping devices, 12-retaining wall anchor cables and 13-foundation piles.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.
Example 1
As shown in figure 1, the composite shock insulation and absorption system for the nuclear power structure comprises a shock insulation system and a shock absorption system.
The vibration isolation support 8 is a main component of the vibration isolation system. The vibration isolation support 8 is connected with the box body bottom plate 1 and the nuclear island structure bottom plate 10. The number of the shock insulation supports 8 is mainly calculated according to the bearing capacity and the earthquake acting force. The plane arrangement of the isolation bearing 8 needs to comprehensively consider the characteristics of rigidity and mass distribution of the nuclear island plant structure. And ensuring that the centroid and the rigid center of the vibration isolation support group coincide with the centroid and the rigid center of the nuclear island structure.
The damping system mainly comprises a vertical damping device 4, an upper cantilever beam 5, a middle cantilever beam 6 and a bottom cantilever beam 7. The vertical shock absorption devices are arranged in a layered mode, and the total number of layers and the number of the shock absorption devices on each layer are determined according to the earthquake force and the bearing capacity of the shock absorption devices. The swinging deformation of the top of the nuclear island structure under the action of the earthquake is larger than that of the bottom, and the larger deformation stroke is more favorable for the damping device to play a damping role, so that the arrangement number of each layer at the top is more than that at the bottom. The cantilever structure plays an important force transmission role and can select a rigid concrete member.
The box body surrounding the nuclear island structure mainly comprises a box body side wall and a box body bottom plate. The box side wall selects the arm supporting type retaining wall structure scheme, and comprises a box side wall arm supporting 2 and a box side wall panel 3. The bottom plate 1 of the box body is a flat plate type bottom plate or a beam plate type bottom plate. If a beam-slab type bottom plate is adopted, the plane arrangement form of the foundation beam needs to be determined according to the arrangement requirement of the seismic isolation support 8. The cross-sectional dimensions of the side wall and the bottom plate of the box body are determined according to the stress and radiation shielding requirements.
In addition, in order to enable the composite shock insulation and absorption system of the nuclear power structure to play an optimal structural vibration control role, the dynamic characteristics of the box body need to be controlled according to specific plant site conditions.
Example 2
Referring to fig. 2, in embodiment 2, the damping device is adjusted to be horizontally arranged, and the rest arrangement form is the same as embodiment 1.
Example 3
Referring to fig. 3, in embodiment 3, the shock absorbing device is adjusted to be arranged in a horizontal and vertical combination, and the rest of the arrangement form is the same as that of embodiment 1.
Example 4
Referring to fig. 4, in embodiment 4, the arrangement of retaining wall anchor cables 12 is added, and the rest of the arrangement form is the same as that of embodiment 1.
Example 5
Referring to fig. 5, in embodiment 5, the arrangement of foundation piles 13 is added, and the foundation piles 13 adopt a pile type which is fully verified by engineering, such as precast piles or cast-in-place piles; the remaining arrangement is the same as in embodiment 4.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.

Claims (7)

1. A composite shock insulation and absorption system for a nuclear power structure is characterized by comprising a box body with high rigidity, wherein the box body consists of a box body side wall and a box body bottom plate, and an independent space for arranging a deep-buried nuclear island structure is arranged in the box body; arranging a plurality of shock insulation supports between the bottom of the nuclear island structure and the box body, and connecting the shock insulation supports with the bottom of the nuclear island structure and the bottom of the box body to form a shock insulation system; arranging a plurality of layers of damping devices between the side wall of the nuclear island structure and the side wall of the box body to form a damping system; the vertical damping device is connected with the side wall of the nuclear island structure and the side wall of the box body through the cantilever arm, and the horizontal damping device is directly connected with the side wall of the nuclear island structure and the side wall of the box body.
2. The composite shock insulation and absorption system for the nuclear power structure as claimed in claim 1, wherein the side wall of the box body is a corbel type retaining wall structure or an anchor-pull type retaining wall structure, and the height of the side wall of the box body is determined according to the burial depth of the nuclear island structure.
3. The composite seismic isolation and reduction system of a nuclear power structure of claim 1, wherein the bottom plate of the box body is of a flat plate structure, a beam plate structure or a pile raft structure.
4. The composite shock-isolating and shock-absorbing system for the nuclear power structure as claimed in claim 1, wherein a foundation pile is arranged at the bottom of the box body, and the foundation pile is of a pile type of a precast pile or a cast-in-place pile.
5. The composite seismic isolation and absorption system of the nuclear power structure as recited in claim 1, wherein the seismic isolation system is seismic isolation supports, the number of the seismic isolation supports is determined by calculation, and the equivalent center of mass of the seismic isolation supports is substantially coincident with the center of the steel and the nuclear island structure at the upper part.
6. The composite seismic isolation and absorption system of the nuclear power structure as claimed in claim 1, wherein the damping device is a hydraulic viscous damper or other mature tension-compression bidirectional damping device; the number of the arranged layers of the damping devices is determined by calculation through a specific structural scheme but is not less than 1, and the number of the arranged layers of the damping devices is determined by calculation according to the deformation characteristics and the stress of the nuclear island structure.
7. The composite shock-isolating and shock-absorbing system for the nuclear power structure as claimed in claim 1, wherein the size of a clear space between the side wall of the box body and the side wall of the nuclear island structure is determined according to the installation requirement of the shock-absorbing device and the displacement requirement of the shock-isolating nuclear island.
CN202121312640.8U 2021-06-11 2021-06-11 Compound shock insulation shock mitigation system of nuclear power structure Active CN216475686U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202121312640.8U CN216475686U (en) 2021-06-11 2021-06-11 Compound shock insulation shock mitigation system of nuclear power structure
PCT/CN2021/123484 WO2022257312A1 (en) 2021-06-11 2021-10-13 Composite seismic isolation and absorption system for nuclear island structure
BR112023025549A BR112023025549A2 (en) 2021-06-11 2021-10-13 COMPOSITE INSULATION AND SEISMIC ABSORPTION SYSTEM FOR NUCLEAR ISLAND STRUCTURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121312640.8U CN216475686U (en) 2021-06-11 2021-06-11 Compound shock insulation shock mitigation system of nuclear power structure

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CN216475686U true CN216475686U (en) 2022-05-10

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CN202121312640.8U Active CN216475686U (en) 2021-06-11 2021-06-11 Compound shock insulation shock mitigation system of nuclear power structure

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CN (1) CN216475686U (en)
BR (1) BR112023025549A2 (en)
WO (1) WO2022257312A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9875817B2 (en) * 2014-06-09 2018-01-23 Bwxt Mpower, Inc. Nuclear reactor support and seismic restraint with in-vessel core retention cooling features
CN107369483B (en) * 2017-07-20 2019-11-12 上海大学 A kind of space damping nuclear power plant structure system
CN108930343A (en) * 2018-07-09 2018-12-04 哈尔滨工程大学 Small-sized nuclear reactor three-dimensional isolation structure
CN112863707B (en) * 2021-01-13 2022-10-25 同济大学 Sandwich type containment structure suitable for serious safety accident
CN113374103A (en) * 2021-06-11 2021-09-10 上海核工程研究设计院有限公司 Compound shock insulation and absorption system of nuclear power structure

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BR112023025549A2 (en) 2024-02-27
WO2022257312A1 (en) 2022-12-15

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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai

Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.

Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai

Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd.