JP3003441U - Structure of magnetically levitated building - Google Patents

Abstract

(57) [Summary] [Purpose] As a measure against earthquakes in a building, the structure is simple and the structure should be levitated from the ground to avoid the effects of earthquake motion. [Structure] A levitation electromagnet 4 is provided on the foundation structure 1 at a position where a required foundation structure 1 constructed on a ground 2 and a building 3 to be laid on the foundation structure 1 face each other. A ferromagnetic board 5 is provided below the facing structure 3, and the building 3 is levitated by exciting the levitation electromagnet 4 and the ferromagnetic board 5 at the time of an earthquake, and thereby the influence of seismic motion. To avoid.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seismic isolation support structure for a magnetic levitation type structure designed to prevent the influence of earthquake motion by levitating the structure from the ground as an earthquake countermeasure.

[0002]

[Prior art]

 Recently, various types of seismic isolation support structures have been developed to prevent the vibration of an earthquake from being transmitted to the structure above the ground.

For example, as in Japanese Patent Laid-Open No. 01-169035 “Seismic support structure”, a superconducting magnet assembly is provided on each of the support and the support, and a damper is provided between the support and the support. , A structure in which a supported body is levitationally supported with respect to a support body to block the transmission of vibrations, and Japanese Patent Publication No. 04-64392 "Stable structure of magnetically levitation type building and its stabilizing method and this stable structure" As a `` control device, '' the outputs of the gap detectors at symmetrical positions are calculated to output the difference in the detected gaps, the weight is run to the required position, and the current of the levitation coil is controlled to be held vertically. In this way, it was designed to be stable, and as a “seismic isolation device” that does not use magnetic force as in Japanese Patent Laid-Open No. 02-217541, it is attached to the base and the base mounted on the bottom of the building. And a support base, and a flexible bag containing high-pressure liquid between the building and the foundation to prevent the building from shaking, and Japanese Patent Publication No. 05-63580 "Building". As a `` seismic isolation mechanism '', a large number of air bearings are installed under the supported part of the building, and when the earthquake occurs, high-pressure compressed air is sent from the compressor to the air bearings to levitate the supported part in the air to isolate vibration. In addition to the above, the Japanese Laid-Open Patent Application No. 03-275813 “Liquefaction countermeasure method for buried structures” states that the excess space generated on the bottom surface of a structure during an earthquake on the side surface of the buried structure constructed underground. A liquefaction-preventing sheet pile that disperses water pressure is provided, and a drainage channel that is continuous with the sheet pile is formed to prevent the structure from rising, or JP-A-04-49 No. 88 “Active vibration control system for structures” is activated by utilizing control of fluid slip by discharging liquid from accumulator to fluid slide to slide base by fluid flow through fluid pipe by controller when earthquake occurs. Controlling power can be reduced, and as the method for preventing liquefaction lifting by a rigid waterproof wall in Japanese Patent Laid-Open No. 05-195544, the expected lifting amount of a structure at the time of an earthquake can be easily calculated and used. A rigid water-stop wall can be designed based on this. Also, as in Jikkei 03-15686 "Expansion joint", the structures of two adjacent buildings are connected to each other, and earthquakes, ground subsidence, building expansion, Regarding expansion joints that can cope with fluctuations due to contraction, etc., the number of parts is small, the structure is simple, and the cover for the body surface Material that prevents floating of materials to improve watertightness, airtightness, etc. Also, as in the case of No. 62-68042 “Seismic Isolation Mechanism”, reactor vessel, spent fuel rack With respect to seismic isolation mechanisms for computers, buildings, etc., fluid is ejected from multiple fluid ejection holes provided on the lower surface of the equipment support part, and the equipment is levitated by the pressure of the fluid. It is possible to reduce the coefficient and to reduce the earthquake motion in all directions of the horizontal plane that is input to the equipment at the time of an earthquake. Also, as in No. 62-15699, "Foundation structure of reactor building," It is provided that the recess is formed and the space between the recess and the ground is used as an underground drainage groove to increase the stability of the foundation during an earthquake and reduce the weight of the foundation.

[0004]

[Problems to be solved by the device]

 However, the above-mentioned conventional structure has a large-scale and complicated structure, requires a large amount of construction cost, construction period, advanced construction technology, and is not effective for seismic isolation during an earthquake. It was

The present invention has been devised in view of the above circumstances, and its purpose is to easily perform a small-scale construction on a general building not intended for a large-scale building. The number of parts is small, the structure is simple, and the manufacturing and construction costs are to be reduced.

[0006]

[Means for Solving the Problems]

 This device is a device that has been proposed to solve the above-mentioned object, in which the required foundation structure that has been constructed on the ground and the foundations at the facing positions of the structures that are to be erected on the foundation structure. A levitation electromagnet is installed on the structure, and a ferromagnetic disk is placed under the structure facing it.The levitation electromagnet and the ferromagnetic disk are excited during an earthquake to levitate the building. The present invention relates to the structure of a magnetically levitated building, which is characterized by:

[0007]

[Action]

 Since the present invention has the structure as described above, by exciting the levitation electromagnet and the strong magnetic disk placed on the facing surfaces of the building and the foundation structure, the magnetic force acting between the respective magnets is increased. The repulsive force causes the building to float above the basic structure, thereby separating the building from the basic structure and isolating the structure from seismic energy.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. That is, reference numeral 1 shown in the figure is a required basic structure provided on an appropriate ground 2, reference numeral 3 is a relatively small building, and superconductivity is provided at a position where the building 3 and the basic structure 1 face each other. A strong levitation electromagnet 4 that uses the body and a ferromagnetic disk 5 are installed opposite to each other.

When an earthquake occurs, the levitation electromagnet 4 and the ferromagnetic disk 5 are energized by the detection of an earthquake detector (not shown), and the magnetic repulsion generated between the two and 5 by the excitation. Due to the force, the building 3 is lifted from the substructure 1, and the building 3 is completely separated from the substructure 1.

Therefore, it is possible to prevent the building from shaking during a small-to-medium earthquake and prevent the building from collapsing against a large earthquake.

In the gap between the building 3 and the foundation structure 1, a horizontal movement control device (not shown) such as a damper (not shown) capable of restraining horizontal movement of the building 3 in a windstorm. May be included. Reference numeral 6 is a coil of the levitation electromagnet.

[0012]

[Effect of device]

 The present invention is based on the above-mentioned structure by mounting a ferromagnetic disk on the basic structure and the building arranged on the basic structure and exciting the ferromagnetic disk as described above. It can be levitated above and completely insulated from the foundation. Therefore, it is possible to eliminate the vibration energy of the earthquake against the building, and without the need for complicated construction and construction costs like the conventional seismic support structure, and in response to the recent revision of the Building Basic Law, general housing From the viewpoint of reviewing the floor area ratio in underground construction, it is expected to have outstanding practical effects.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing the structure of a magnetic levitation building according to an embodiment of the present invention.

[Explanation of symbols]

1 Basic structure 2 Ground 3 Building 4 Electromagnet for levitation 5 Ferromagnetic board 6 Coil of electromagnet for levitation

Claims (1)

[Scope of utility model registration request] 1. A structure in which a levitation electromagnet is provided on a foundation structure at a position facing a required foundation structure constructed on the ground and a structure surface-constructed on the foundation structure, and the structure facing the foundation. A structure of a magnetic levitation type building, characterized in that a ferromagnetic board is provided below the building, and the building is levitated by exciting the levitation electromagnet and the ferromagnetic board in case of an earthquake.