WO2012129739A1

WO2012129739A1 - Shock-eliminating, shock-absorbing, shock-attenuating and shock-isolating structure for construction and nuclear power station

Info

Publication number: WO2012129739A1
Application number: PCT/CN2011/000628
Authority: WO
Inventors: 陆建衡; 柴秋文; 陆勤敏
Original assignee: Lu Jianheng; Chai Qiuwen; Lu Qinmin
Priority date: 2011-03-28
Filing date: 2011-04-11
Publication date: 2012-10-04
Also published as: CN102174820A

Abstract

A shock-eliminating, shock-absorbing, shock-attenuating and shock-isolating structure for a construction and a nuclear power station comprises an aboveground structure (1) of the construction and the nuclear power station, an under ground foundation (2), a plate type multi-layer shock-eliminating, shock-attenuating, and shock-isolating slide device (3) arranged between the underground foundation of the construction and nuclear power station and the earth base, and shock-absorbing devices arranged around the construction or the nuclear power station and between the ground and the bottom of the foundation. The shock-eliminating, shock-absorbing, shock-attenuating and shock-isolating structure for the construction and nuclear power station improves the ability of preventing and resisting earthquake disaster and 20 percent of investment cost is saved.

Description

Building and nuclear power plant suspension shock absorption and shock absorption isolation structure

Technical field:

The invention belongs to a shock-absorbing, shock-absorbing and shock-absorbing structure of a building and a nuclear power plant building, and particularly relates to a building and a nuclear power plant suspension and vibration-absorbing after the earthquake and damage prevention of buildings and nuclear power plants are prevented and relieved by a large earthquake disaster. Shock-absorbing and isolating structural system.

Background technique:

The shock-absorbing and shock-absorbing structure of buildings and nuclear power plants is a huge economic property loss and personal injury caused by the current earthquake in Japan against nuclear power plants and buildings, thus the theory of seismic design of existing buildings and nuclear power plants. Serious problems in technical standards, new research topics proposed, and the establishment of rigid flexible engineering design theories and design standards for buildings and nuclear power plants to prevent major earthquake damage.

Since the development of science and technology theory, it is well known that the impact destructive force generated by earthquakes is mainly the shear force that reciprocates relative to the earth. For human-built buildings, including nuclear power plant buildings, they are hit and damaged by the impact of earthquakes. The main forms are: the horizontal impact damage caused by large earthquakes when large earthquakes occur, and the construction of nuclear power plants for buildings. The impact of the damage, first of all, is the shearing damage to the foundation of the building that is inseparable from the earth.

In general, the seismic design of existing buildings against earthquakes is designed to greatly improve the overall seismic stiffness (strength) of buildings to withstand the impact of seismic reciprocating shear impact damage. Therefore, the foundation of the building that opposes the reciprocating shear impact damage of the earthquake is very important. The impact of the earthquake reciprocating shear shock damage on the building foundation is the combined force of the reciprocating (repetitive) impact force and the reaction force. This combination will have the following three situations:

1) When the earthquake-resistant stiffness (strength) of building and nuclear power plant building foundations meets the seismic design requirements of Grades 8-9, the large-scale earthquake reciprocating shear impact destructive force transmits the earthquake impact damage force to the building through the impact on the foundation. In the upper structure, the swing of the upper structure of the building is caused. There are varying degrees of damage in the structure, but there is no danger of collapse and damage. However, the reinforcement treatment of damaged parts with different degrees in the superstructure cannot meet the seismic strength of the original design. In the next major earthquake of magnitude 8-9, it is impossible to guarantee the safe use of the building.

2) When the seismic reciprocating shear impact destructive force exceeds the artificially specified 6 degree, 7 degree, 8 degree, and 9 degree seismic design requirements in areas with different seismic fortification requirements, the collapse of the building cannot be avoided. That is to say, when the earthquake erupts, the magnitude of the destructive force generated by the reciprocating shear shock cannot be artificially specified. Therefore, the collapse of the building will be unavoidable.

3) When an earthquake breaks out, there are only two directions of force for the reciprocating shear impact of the earthquake, and the direction of the seismic belt is one to one. The buildings built by humans in the city are planned and constructed along the street according to people's needs. They are multi-directional. The seismic design of the current building is subjected to the seismic design of the most unfavorable direction of the building. It is thus clear that the seismic design of the current building is subjected to the direction of force, and only a few are reciprocating with the earthquake. The direction of the impact of the destructive force is one, and most of them are not uniform (forming an angle), just as a person is attacked by multiple angles on the side, making it impossible to fight and escape. For such buildings, under the earthquake It is very difficult to escape the collapse and destruction.

Many nuclear power plants have been built in many countries around the world. In many factors, the seismic design stiffness (strength) of nuclear power plant buildings is very large. Therefore, for the nuclear power plant building structure against the impact damage of the 7-8-9 earthquake, there will be no major structural damage, but in the nuclear power plant building structure, the rigidly connected facilities (nuclear reactors), etc., are not It is possible to reach the strength of large earthquake resistance (levels 7, 8, 9), especially in the nuclear power plant building structure, the strength of the connecting members (components that transfer energy) between various facilities (nuclear reactor itself), there is not enough strength at all. Resist the damage of the earthquake.

The connecting members between the superstructure of the nuclear power plant building and the various nuclear facilities of the underground building cannot allow any cracks to occur during the operation of the nuclear power plant. The nuclear explosion caused by the earthquake in Japan caused an explosion, which was caused by the impact of the earthquake and the damage caused by the damage caused by the earthquake in the upper structure of the nuclear power plant and various nuclear facilities in the underground building. Therefore, the construction of a nuclear power plant with a large stiffness (strength) alone cannot escape the catastrophe of earthquake strikes. Therefore, it is impossible to resist the 7-8-9 earthquake caused by the large earthquake resistance design that meets the current seismic design against large earthquakes. Therefore, nuclear power plant construction cannot meet the requirements for safe use under strong earthquakes.

Obviously, there is a serious safety hazard in the seismic design of the existing nuclear power plant building structure. The lesson of the earthquake damage caused by the Japanese nuclear power plant should be reflected in the seismic design against the destructive power of the earthquake. It is no longer possible to use only the earthquake resistance. The idea is to design construction projects and nuclear power plants (buildings).

An earthquake is an irresistible natural law. In an sense, irresistible is irresistible. However, the seismic design of the current nuclear power plant building structure is against the irresistible natural laws, Japan. The lessons of nuclear power plants suffering from earthquake damage have once again deeply warned modern humans, especially the scientific community, that they cannot take the road of resisting natural laws. Only the scientific development path that is compatible with nature is the building of modern countries and nuclear power plants. The structure is urgently to be remodeled.

The current guidelines for structural mechanics of seismic design are: Design the upper structure and foundation (underground building) of the building into an inseparable rigid body (integral) and insert it into the earth (foundation). Thus, when an earthquake broke out, the earth formed a strong confrontation with the building. When the earthquake energy is small, the building is temporarily safe. When the earthquake energy is large, the disaster of building collapse and destruction will come. Therefore, it can be said that such earthquake-resistant buildings are unsafe and unreliable, and the nuclear power plant building structure is even more so.

The structural mechanics criteria we propose to adapt to earthquakes and release internal forces of earthquakes are: designing the building structure including the foundation (underground building) and the foundation (the earth) as a separate (not integral) structural system. The specific design method is: in the foundation of the building One to a plurality of sliding isolation devices are added between the bottom surface and the foundation, and in the past, the entire building is pressed against the foundation through the foundation, and is integrated with the earth. In this way, when a major earthquake breaks out, the huge horizontal shear impact damage generated cannot be transmitted to the superstructure through the building foundation, just like the huge horizontal power generated by the train running on the bridge, installed between the bridge and the pier. The shock-absorbing sliding device is released and does not cause vibration damage to the pier.

The foundation of the building (underground building), especially the nuclear power plant building structure, has below ground level, all of which are 3-10 meters below the ground (the underground buildings of some special buildings are deeper), so it is only under the foundation of the building foundation. It is not enough to set up a seismic isolation sliding device. The earth's soil layer from the bottom of the building foundation to the ground will still have an impact on the building foundation (underground building) under the impact of large earthquakes. Building foundation (underground building) The deeper the burial, the greater the damage caused by the earthquake. Therefore, as mentioned above: In addition to the one-to-story isolation slip device installed on the bottom surface of the foundation of the building and the foundation, the shock-absorbing and shock-absorbing devices shall be installed at appropriate locations around the building, above the foundation bottom, below the ground. Its function is to damage the impact of the soil layer from the foundation bottom surface to the ground on the building foundation, completely block and release it flexibly.

By adopting the above two kinds of rigid flexible shock absorbers, shock absorption and isolation measures, it can greatly reduce the damage of large earthquake impact damage to buildings, especially to the various structures in the nuclear power plant building structure and structure. Thereby avoiding the catastrophic loss caused by a major earthquake to humans.

The invention is directed to the serious hidden dangers in the seismic design of the existing buildings and nuclear power plants mentioned above. Out: Earthquake-absorbing and shock-absorbing structures for buildings and nuclear power plants.

Summary of the invention:

The technical scheme of the earthquake-absorbing and shock-absorbing structure of the building and the nuclear power plant is: It is mainly composed of the whole building and the nuclear power plant building structure, and the shock-absorbing, shock-absorbing and shock-absorbing isolation device.

It is characterized by:

1) In the building and nuclear power plant (integral) building structure, between the foundation and the foundation, the multi-layer plate type shock absorber and shock isolation device is designed and set up, and its function is: through the multi-layer plate type horizontal suspension shock absorption and isolation device, The structure of the building and the nuclear power plant (whole) and the foundation (the earth) are designed to be inseparable from the foundation (the earth), thus directly avoiding and withstanding the impact of the earthquake destructive force.

2) Designing and installing a vibration-absorbing device on the ground above the building and the surrounding area of the nuclear power station, above the foundation of the structural foundation of the building and the nuclear power plant (integral) (and above the multi-level horizontal suspension and shock absorption isolation device) Function: The de-shocking device can effectively block the earth's surface from the foundation bottom to the ground (3-10 meters above), with the impact of the seismic wave, impact on the building and nuclear power plant (integral) building foundation and underground facilities. .

The size of the multi-layer horizontal slab shock absorbing and isolating isolation device disposed between the building and the nuclear power plant (integral) structure and the foundation (earth) is determined according to the size of the structural plane of the building and the nuclear power plant (overall). The materials used in the device are: 髙 strength PTFE, rubber and other high pressure and corrosion resistant materials.

The vibration-dissipating device disposed around the structure of the building and the nuclear power plant (integral) and the bottom surface of the foundation to the ground is: a structure which is externally matched with the earth layer (as shown) and an elastic recovery device in the vibration-absorbing device. The material is made of reinforced concrete and steel, and the production is made of special components.

The shock-absorbing and shock-absorbing structure of the building and the nuclear power plant is not only in the whole building and the nuclear power plant (whole) building, but also greatly improves the ability of low-impact earthquake-resistant shocks, greatly prolongs the service life, and is no longer dead. Anti-seismic and anti-earthquake impact damages the seismic design of the huge stiffness, thus reducing construction investment by at least 20%.

BRIEF DESCRIPTION OF THE DRAWINGS:

In order to further explain the structure of the earthquake-absorbing and shock-absorbing structure of the building and the nuclear power plant, reference will be made to The figures and examples are described in detail.

The drawings are:

Figure 1: Schematic diagram of the section design for the design of seismic and seismic isolation structures for buildings and nuclear power plants; Figure 2: Sections for the design of seismic isolation structures for nuclear power plants (whole buildings) Design schematic

Figure 3: Schematic diagram of the multi-layer horizontal suspension and shock absorption isolation device between the foundation of the foundation of the building and the nuclear power plant and the foundation (the earth);

Figure 4: Schematic diagram of the de-shocking device for completely separating the building and the nuclear power plant (whole) structure from the surrounding area in the vicinity of the building and the nuclear power plant, from the basement surface to the ground;

Figure 5 is a schematic view of the reinforced concrete member and the steel structural elastic recovery device in the vibration damping device as described in Figure 4. In Figure 1-5:

1 is the superstructure of buildings and nuclear power plants;

2 is the underground structure of buildings and nuclear power plants;

3 is a plate type horizontal multi-layer suspension and shock absorption isolation device;

4 is a reinforced concrete member in the vibration-absorbing device shown in Fig. 5, and the shape is a vertical or L-shaped reinforced concrete member;

5 is the reinforced concrete cover plate shown in Figure 5;

6 is the elastic recovery device shown in Fig. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT - The design of each component is carried out according to Figure 1-5, and the design rigidity is determined in areas where different buildings and nuclear power plants (integral) structures and seismic design requirements are different.

1) Design to meet the requirements for the overall stiffness and safety of the superstructure of the building and nuclear power plant;

2) Design the design of the lower facilities and foundation depth of buildings and nuclear power plants according to different geological data in different regions;

3) According to the weight of the upper structure of different buildings and nuclear power plants, design a multi-layer horizontal (reciprocating sliding) suspension and shock absorption isolation device isolated from the foundation (earth);

4) Design the structure of the de-shocking device according to the depth of the underground facilities of different buildings and nuclear power plant structures Figure

5) According to the seismic requirements of buildings and nuclear power plants in different regions, design elastic recovery devices and install them correctly according to the design drawings;

6) The construction procedure is from the foundation--the installation and construction of the multi-layer horizontal suspension and shock absorption isolation device. The underground facility (basic) construction - the construction of the superstructure - the construction of the surrounding vibration isolation device can be before the structural construction Or complete the structural construction.

Claims

Claim

1. A suspension and shock absorption isolation structure for a nuclear power plant of a building, which mainly consists of: a structure above the ground above the building and the nuclear power plant, a facility below the ground (basic), and a multi-layer suspension and vibration-absorbing seismic isolation sliding device. And the building and the surrounding of the nuclear power plant, the grounding below the base of the basement above the shock absorber, characterized by -

1) Between the building and the underground facility (basic) structure of the nuclear power plant and the foundation (the earth), a slab-type multi-layer earthquake-absorbing and shock-absorbing shock-absorbing device is designed;

2) A shock-absorbing device designed to be placed at a suitable location around the building and the nuclear power plant below the ground floor.

2. The structure of claim 1 characterized by a slab-type multi-layer horizontal shock absorbing and shock absorbing and isolating device disposed between the bottom of the building and the nuclear power plant foundation (underground facility) and the foundation (earth). The utility model relates to a multi-layer sandwich sliding plate which can reciprocally slide a certain elastic layer or a composite material, and the cushion layer plate can be a flat integral plate type or a strip type or a point type which is subjected to an upper load-bearing structure. (Pile base bearing type) setting.

3. The structure according to claims 1 and 2, characterized in that the building and the nuclear power plant suspension shock absorption and shock absorption isolation device are made of rubber composite layer (plate), or polytetrafluoroethylene, etc. High-strength and corrosion-resistant composite materials are produced and assembled.

4. The structure of claim 1 characterized in that the vibration-damping device disposed above the ground of the building and the nuclear power plant and above the bottom surface of the underground facility (foundation) is a vertical or L-shaped member made of reinforced concrete material. , and a cover made of reinforced concrete.

5. The structure according to claim 1, characterized in that the elastic recovery device (device) disposed in the vibration-absorbing device above the ground of the building and the nuclear power plant and above the bottom surface of the underground facility (base) is strong in steel structure or other elasticity. Made of corrosion-resistant materials.