JP4676569B1 - Building collapse prevention method and building collapse prevention device - Google Patents

Abstract

[PROBLEMS] In order to make it possible to utilize the space widely during normal times, only when there is a risk of the building collapsing due to an earthquake or typhoon, the structure is instantly deployed to support the entire building and while it is shaking Prevent the building from collapsing by continuing to support the entire building with optimal force.
When a structure 2 that can be expanded by filling a gas therein is installed in a building, the entire inner wall of the building 1 or all of the longitudinal direction or all of the short direction after the expansion is installed. When installing outdoors so as to fill the space in contact with the structure 2, the structure 2 may be fixed in a folded state so that the bottom surface of the structure 2 is in contact with the ground. Only when there is, the structure 2 is expanded by filling with gas, and the thickness of the wall of the building 1 is increased to instantly increase the earthquake resistance. A building collapse prevention method and a building collapse prevention device characterized by controlling the internal pressure of the body 2.
[Selection] Figure 2

Description

      In order to prevent the building from collapsing due to an earthquake, a typhoon, etc., the structure fixed to the whole or a part of the wall surface of the building is instantaneously developed using gas pressure, and the internal pressure of the structure is It is related with the building collapse prevention method and the building collapse prevention apparatus which increase the earthquake resistance of a building instantaneously by controlling.

In 1995, the Great Hanshin-Awaji Earthquake lost 6,434 precious lives, and most of the victims died at home. Many people died in areas where relatively many pre-war wooden houses remained. The Most of the fatalities were deaths caused by the collapse of houses and were instantly killed, but some were also reported dead due to other causes, such as fires. And many people were buried alive, and the survival rate when rescued by the Kobe Fire Department and the Self-Defense Force was about 75% on the first day, about 15% on the third day. The rate fell. On the other hand, there was little damage to 2x4 (two-by-four) prefabricated houses that met strict design standards. ("Hanshin-Awaji earthquake lesson information collection", Cabinet Office homepage)
From this fact, it can be said that whether or not the building collapsed was the boundary between life and death, and of course, measures to protect people when the building collapses are important, but first, measures to prevent the building from collapsing are minimized. It can be said that it is extremely important to stop. Also, rebuilding after collapse requires tremendous costs and time, and socio-economic losses are immeasurable. Therefore, it can be said that it is important to avoid socio-economic loss first to prevent the building from collapsing.

However, if structures such as pillars and walls are made large in order to realize a building that will not collapse due to an earthquake or typhoon, the living space during normal times will become narrow. Therefore, in order to cope with such a problem, researches relating to earthquake resistance, seismic isolation, and vibration control for obtaining a large effect with a small structure have been actively conducted and many inventions have been disclosed.

First, seismic technology is a structural technology that simply withstands earthquake shaking by strengthening the framework of the building using braces, reinforcement hardware, etc. without using a device that prevents earthquake shaking. A new seismic design standard was announced by the amendment of the Building Standards Law Enforcement Order in 1981, and buildings after that are said to have high earthquake resistance.

Next, seismic isolation technology is a technology that installs an isolator or damper on the foundation to make it difficult for vibration to be transmitted between the building and the ground, and prevents the earthquake energy from being transmitted to the building by separating the building and the ground. It is.

Finally, damping technology is a technology that installs dampers, etc., at various locations in a building and causes them to absorb earthquake shaking. This is a technology in which the vibration control device absorbs the deformation of the building that occurs in the event of an earthquake, and is classified into three types, passive, semi-active, and active, depending on the necessity of energy for vibration control.

For example, Patent Literature 1 discloses an anti-seismic repair method and an anti-seismic repair structure for an existing building. The technique disclosed in Patent Document 1 is to divide a wall into upper and lower parts and interpose a viscoelastic body between them, and can increase the amount of horizontal displacement of the frame in the event of an earthquake or the like. In addition, an increase in the weight of the housing due to this can be suppressed to a small extent.

Furthermore, although it is not a technique for preventing the building from collapsing, research has been conducted on a technique for inflating an air bag to protect a person when a building or the like collapses, and some inventions have been disclosed. For example, there are Patent Document 2 and Patent Document 3.

In addition, the structure in the present invention has rigidity by filling the inside with gas, and can also be classified as a kind of double air film structure.
There are two types of conventional air film structures: a normal air film structure that lifts the roof with a pressure difference between the inside and outside, and a double air film structure that is used as a rigid wall. An example is the Allianz Arena in Germany. The air membrane structure is light in the membrane structure and can be used for large-scale buildings such as exposition pavilions, large warehouses, shopping malls, baseball domes, etc. Has been.
Conventionally, the double air membrane structure is mainly used for the roof of a large-scale building, and has not been used as a structure such as a pillar or a wall. In the case of using other than the roof, Patent Document 4 discloses that independent bags made of a flexible membrane material are continuously arranged in a plane and each cell is filled with a granular resin foam to form independent cells. The formed building materials are open to the public. However, the strength is such that it can be used as a non-bearing wall (a wall that is not structurally fixed) by being attached to a structural column or structural beam, and cannot be used to prevent the building from collapsing.
Therefore, Patent Document 5 discloses a structure having a structure in which a large number of cores are accommodated in an intermembrane region between flexible membranes in order to improve the rigidity of the double air membrane structure.

JP 2006-104834 A Japanese Patent Laid-Open No. 1996-332243 JP 2010-121385 A JP 1998-205173 A JP 2008-115633 A

However, the conventional techniques related to earthquake resistance, seismic isolation, and vibration control have the following problems.

In the Great Hanshin-Awaji Earthquake, houses built before 1980 (old earthquake resistance standards) suffered damage such as collapse, and houses built after that (new earthquake resistance standards) suffered less damage.
And according to Table 6, “2008 Housing and Land Statistics Survey (National Edition)” (Ministry of Internal Affairs and Communications Statistics Bureau, Policy Director, Statistics Training Institute, updated March 30, 2010) The total number of houses is about 11.74 million, of which 6.35 million were built before 1980. In addition, according to Table 76 of the same survey, there were about 10.98 million homes with single wooden houses, of which about 6.40 million were built before 1980. There are about 5.81 million units.
According to the results of this statistical survey, despite the growing threat of major earthquakes such as the Tokai and Tonankai earthquakes, there is still a possibility that about 6 million homes will collapse due to the earthquake, and seismic reinforcement work is proceeding slowly. I understand that there is not.

This can be attributed to the fact that the effect of seismic reinforcement is not guaranteed and the cost is enormous.
In fact, in the Niigata Chuetsu-oki earthquake that occurred in 2007, there have been reports of cases where buildings that should have been reinforced have collapsed, and the effects of conventional seismic reinforcement work have been questioned. In addition, the “seismic strength impersonation” problem by architects has shaken the confidence in seismic reinforcement.

Recently, the period of shaking is not uniform due to the magnitude of the earthquake and the characteristics of the ground, and the threat of long-period ground motion that is particularly damaged when buildings resonate during the period of shaking has been pointed out. In addition, the effect of wind is large for high-rise buildings.
Certainly, it is possible to know the period of shaking inherent to a building using a structural health monitoring system or the like. However, it can be said that it is impossible in the first place to cope with different shaking methods each time by fixed seismic reinforcement.

Furthermore, even if reinforcement that satisfies the national standards in the past, in the seismic reinforcement method of the frame construction method, column mortises are accumulated every time the earthquake is repeated. The earthquake resistance is not always guaranteed. It is said that there are more than 10 million such buildings that are legal but dangerous throughout the country.
According to the results of the survey on building damage in the Great Hanshin-Awaji Earthquake, the mortise of the pillars and the lack of walls are the cause of the collapse of the wooden house. "Epistula, Vol. 11, Institute of Architecture, Ministry of Construction, January 1996).

Next, seismic isolation technology is considered to be able to cope with various ways of shaking because the energy of the earthquake is not transmitted to the building by separating the building and the ground, but when used for existing buildings, Compared to other technologies, such as high precision is required and the building needs to be jacked up. In addition, there is a problem in that maintenance costs are incurred, and if the precision is insufficient, the earthquake resistance is reduced. Furthermore, there is a problem that it is weak to a strong push-up from directly below the earthquake.

Finally, vibration control technology can cause the entire building to lose balance depending on the location of dampers such as columns and beams. This is a problem derived from reinforcing a local structure such as a column or a beam. In addition, the evaluation method has not been established in the first place, and there is a problem that the effect of improving the earthquake resistance as a whole building is uncertain, and in addition, there may be a problem with a damping member such as a damper. Furthermore, since there is not much effect on the first and second floors of the building, it is pointed out that there is no point in adopting it unless it is a certain high-rise building.

As described above, there are various problems with the conventional seismic technology, but the common problem is that although the seismic resistance can be improved to some extent, the installation of braces and dampers increases the weight of the building itself. It means that. Also, if these reinforcing materials are unevenly distributed, the distance between the center of gravity and the rigid center of the building, that is, the eccentric distance increases, and the risk of collapse due to torsional vibration of the building during an earthquake increases. There is also. Furthermore, it is also a big problem in terms of cost and period that it is often necessary to make major repairs such as removing wall materials.

Next, although it is not a technique for preventing the building from collapsing, the personal protection technique using the airbag has the following problems.
First, there is a risk of scratching or the like due to the inflated airbag. In fact, in the case of an automobile airbag, if a seat belt is not worn, it may be fatal. Therefore, the airbag needs to be deployed as far away from the human body as possible.

Next, it is doubtful whether the airbag can withstand the drop impact of the ceiling, beams, etc., and it is fully conceivable that the pressed timber or the like pierces the airbag. When dealing with falling objects, it is not sufficient to simply design to withstand pressure, and the protection of the airbag itself to withstand penetration by falling objects is also required.

Finally, there is a risk that evacuation may be difficult in case of live burying or fire. In the event of being buried alive, the air tightness of the airbag may conversely make it difficult to supply oxygen to the rescuer. In the Great Hanshin-Awaji Earthquake, the occurrence of fire and the spread of fire spread increased the damage. The distribution of fire points is large in areas with seismic intensity 6 or higher (particularly seismic intensity 7), and is almost proportional to house damage. An example of a fire-resistant building that lost fire resistance due to destruction by earthquake motion, and the fire that broke out from the fire-resistant building spread to adjacent buildings due to the strength of the fire due to the large number of dangerous or flammable materials, collapse of the building, etc. there were. ("Hanshin-Awaji earthquake lesson information collection", Cabinet Office homepage).

The double air membrane structure technology, which is a structural technology related to the present invention, has been conventionally used mainly for the roofs of large-scale buildings, and has not been used as structures such as columns and walls. It was. Moreover, although the technique used as a non-bearing wall by attaching to a structural column, a structural beam, etc. was devised, it was not rigid enough to prevent the building from collapsing. And there is no conventional double air film structure that can be folded during normal times and deployed when there is a risk of building collapse, and the natural period of the building is changed by controlling the internal pressure of the double air film structure. There was no technology to deal with shaking such as earthquakes.

In order to solve the problems of the prior art and to make wide use of the space during normal times, the present invention supports the entire building by deploying the structure instantaneously only when there is a risk of the building collapsing. Another object of the present invention is to provide a building collapse prevention method and a building collapse prevention device that does not cause the building to collapse by continuing to support the entire building with an optimum force even while shaking.

In order to solve the above-mentioned problem, the method for preventing collapse of a building according to claim 1 is characterized in that a structure that can be expanded by filling the interior with a structure, the entire inner wall of the building or the entire longitudinal direction after the expansion, In order to fill the space in the short-side direction with the structure, it is fixed in advance to the inner wall of the building in a folded state, and when there is a risk of building collapse, the structure is filled with gas. It expands by doing and increases the earthquake resistance of a building instantaneously by increasing the thickness of the wall part of a building, It is characterized by the above-mentioned.

Only when there is a risk of the building collapsing, the space can be used widely during normal times by filling the inside with gas and expanding the structure. At this time, the horizontal load acting on the building when it is deployed, excluding places where it is difficult to fix the structure, such as places where buildings are installed, windows, furniture, etc. and spaces that are also required in the event of an earthquake Or it is necessary to arrange | position as much as possible so that a vertical load may be supported by the said structure. For this reason, it is fixed in advance to the inner wall of the building in a folded state so that the entire inner wall of the building or the space in contact with the entire longitudinal direction or the entire lateral direction can be filled with the structure after deployment. deep.

The building collapse prevention method according to claim 1 utilizes the fact that the internal pressure acts uniformly by filling the inside of the structure with gas, and arranges seismic elements throughout the building, thereby providing a center of gravity of the building. It is possible to prevent the distance between the center and the rigid center, that is, the eccentric distance, from increasing. Can be solved.

Rigidity can be increased by reducing the size of the structure itself fixed to the wall. In addition, as with the bulkhead structure for maintaining the ship's resistance to torpedo attacks, etc., even if a part of the structure is damaged for some reason, the remaining structure will maintain earthquake resistance. Can do. Therefore, it is desirable that the length of one side of the structure is within 1 m.

As for the fixing means for fixing the structure to the building, a large shearing force acts on the structure as a part of the wall when there is a risk of collapse of the building. In addition, since the structure is deployed so that the structures are in close contact with each other, it is not necessary to be tightly connected with hardware as in the case of fixing braces, and the thick iron circle used in the frame wall method (2 × 4 method in the United States) It can be fixed to the building with a nail (CN nail) and can be driven using an automatic nailer.

In order to maintain the airtightness of the structure, it is desirable that the gas-filled portion is molded in a state separated from the base portion fixed to the building, and the base portion is fixed to the building and then bonded thereto.

In order to fill the inside of the structure with gas, a gas generating agent, a gas cylinder or the like is used in the same manner as the airbag. When a gas generating agent is used, the internal pressure after the structure is expanded is controlled by controlling the exhaust. Although the output of gas pressure control is inferior to that of hydraulic control, in the present invention, since the structure is deployed immediately before a load due to shaking is applied, the output necessary for the deployment of the structure is sufficient. In addition, the air supply control of the internal pressure control is mainly performed at a timing when the load is reduced by the shaking, and the exhaust control can be always performed. In the case where the internal pressure is not controlled, a foam can be used as a material filled in the structure.

In order to develop by filling the structure with gas when there is a risk of building collapse, a command signal for releasing gas into the structure needs to be transmitted from the outside to the structure. There is. Wired communication can be used as a transmission means for this purpose, but it is desirable to use wireless communication in view of maintaining the airtightness of the structure and ease of installation.

The detection of the possibility of the building collapsing can be detected not only by human perception, but also by installing a seismometer in the building, but can also be detected by an earthquake early warning or the like. Moreover, the case where it wants to expand beforehand like the case of the aftershock of a big earthquake is also assumed. Therefore, the development of the structure is basically performed automatically, but can be switched to manual. When performing automatically, emergency earthquake information, seismic intensity information, epicenter information, Tokai earthquake prediction information, Tokai earthquake warning information, Tokai earthquake observation information, weather information, etc. It is detected by observing.

When the possibility of building collapse is detected, the thickness of the structure that completely fills the wall of the building is instantaneously increased to support the entire building. At this time, since the structure is deployed so as to protrude in a direction perpendicular to the wall, the airbag does not protrude toward the person as in the human protection technique using the airbag. There is no suffocation and death due to the burying of airbags. Furthermore, it is possible to prevent the fire-resistant performance from being lost due to the earthquake-resistant building being destroyed by the earthquake motion, and the risk that the fire ignited from the fire-resistant building spreads to the adjacent building.

The load-bearing wall magnification of a wooden building is defined as a wall magnification of 1.0 when the shear deformation angle is 1/120 when a horizontal force of 1.96 kN is applied to a 1 m wide wall. The shear deformation angle is the ratio of the wall height to the displaced distance. For example, if a wall with a height of 3 m is deformed by 2.5 cm while the lower part is fixed, the wall has a wall magnification of 1.0.

The specific magnification is determined as a framework required for structural strength in the Building Standard Law Enforcement Ordinance Article 46 for the wooden framework construction method. As for the frame wall construction method (2x4 method in the United States), the magnification of the shaft assembly with bracing in the Ministry of Construction Notification No. 56 is one bracing when using wood with a thickness of 1.5 cm × width 9 cm. 1.0, on the basis of this, when using wood with a thickness of 3 cm × width 9 cm, the single bracing is 1.5 and the tack is 3.0, whereas the magnification of the structural plywood is one side Is 2.5 and both sides are 5.0, and the more the wall is filled with wood or plywood, the larger the magnification is, the more difficult it is to deform.

If the internal pressure is increased by filling the inside of the structure with gas, the structure becomes difficult to be deformed and can retain rigidity such as a load-bearing wall with a large wall magnification, and the weight of the building itself is reduced. The problem common to conventional seismic technology, which would increase, can be solved.

While the airbag is made of a soft material for the purpose of protecting the human body, the structure according to the present invention is an automobile tire whose strength is increased by applying an internal pressure of gas while maintaining the shape of the exoskeleton. Because it is the same mechanism as, it can be folded and unfolded, but it must be made of a material with low elasticity.

Therefore, polyester, nylon, aramid, rayon cord, etc. are used for the cord layer forming the skeleton of the structure as well as the carcass for withstanding the load, impact, and filling gas pressure received by the automobile tire. In order to further increase the rigidity of the structure, the cord layer is laminated or the cord layer is fastened with a strong belt in the same manner as a radial tire of an automobile.
A composite material such as FRP can be used for the surface of the structure, but since there is anisotropy in strength, it is necessary to stack a plurality of sheets with different fiber directions. For this reason, carbon nanotubes with higher strength can be used in the future.

Nitrogen gas, helium gas, carbon dioxide (CO2), or the like is used as the gas filling the structure because safety is required.

In the case where the internal pressure is not controlled, the structure can be filled with a urethane foam that can increase the rigidity in a short time by filling the body or the like of the automobile. In this case, an air compressor is used for filling the structure.

In addition, as a material for filling the structure, a sponge used in an air mat that expands by sucking air by itself when the valve is opened may be considered. In this case, no gas cylinder or air compressor is required.

In the case of using a mechanism similar to an airbag that ignites an inflator (gas supply device) and generates a gas to deploy a bag body, the inflator can be instantly deployed in units of 0.01 seconds. In the case of an air bag, sodium azide has been conventionally used as a gas generating agent. However, in order to obtain a high internal pressure more quickly by deploying the structure, a propellant and argon gas are not used. A hybrid inflator using both active gases as gas generating agents is effective.

The conventional double air membrane structure has been used for roofs such as large-scale domes due to its light weight, but the structure in the present invention has the same internal pressure due to gas filling on all surfaces. By applying the internal pressure to the wall surface in a state where all or part of the wall surface is completely filled, it is possible to cause the load due to the roof or the like to act against the shearing force.

After the earthquake or typhoon has settled, if the gas filled in the structure is exhausted and folded again, the space can be widely utilized as it was.

The surface of the structure does not impair the aesthetics if the surface that is visible in the folded state is patterned like a normal wall.

In the following, the means described in claims 2 to 20 will be described with special mention except for the part overlapping the contents described in claim 1.

First, the building collapse prevention method according to claim 2 can widely utilize the space in the building even when there is a possibility of building collapse, and can be developed by filling the interior with gas. The structure is fixed in advance to the outer wall of the building in a folded state so that the bottom surface of the structure is in contact with the ground after deployment. If there is a risk of building collapse, the structure is filled with gas. It expands by doing and increases the earthquake resistance of a building instantaneously by increasing the thickness of the wall part of a building, It is characterized by the above-mentioned.

The building collapse prevention method according to claim 2 is different from the building collapse prevention method according to claim 1 mainly in that the structure is fixed to the outer wall of the building. In this case, a ground area to be deployed outdoors is required, but since the ground contact area is increased as compared with the case of deploying inside a building, the stability is further improved.

By fixing the structure in a superimposed manner, it can be developed in a pyramid shape, and the earthquake resistance of the building can be further increased. In this case, in order to make each structure contact | adhere, it is necessary to ensure the passage of the gas exhausted from another structure.

Moreover, when deploying outdoors, there is a risk that nearby trees will fall down and pierce the structure. Therefore, a composite material such as FRP can be used on the surface, but since there is anisotropy in strength, it is necessary to laminate a plurality of sheets in different fiber directions. For this reason, carbon nanotubes with higher strength can be used in the future. Furthermore, the strength of the surface of the structure can be dramatically increased by coating the surface of the structure with a synthetic diamond so as to be thinly covered. Synthetic diamond is as hard as natural diamond, which is considered to be the hardest on the earth.

Looking at the collapse situation of buildings that occurred in the past, there are some cases where it was barely escaped from total destruction by entrusting work such as utility poles. Therefore, in the building collapse prevention method according to claim 3, the structure that can be expanded by filling the interior with gas is used to fill a space between adjacent structures after the expansion with the structure. In the folded state, it is fixed in advance to the outer wall of the building, and when there is a possibility of the building collapsing, it is expanded by filling the inside of the structure with gas, and the space between the adjacent buildings is The buildings are mutually commissioned by being filled with the structure, and the earthquake resistance of the building is instantaneously increased by integrating a plurality of buildings.

In order to entrust a building to each other, it is necessary to fill the space between adjacent buildings with the structure, and therefore, precise surveying and development planning are required.

In addition, since the structures are fixed in a superimposed manner, it is possible to secure the passage of gas exhausted from other structures on the upper side or the side surface of the structure in order to bring the structures into close contact during deployment. Necessary.

Next, the building collapse prevention method according to claim 4 is characterized in that the structure is developed by filling with carbon dioxide gas (CO2) in order to prevent the collapse of the building comprehensively by preventing the spread of the building from spreading. A building collapse prevention method according to any one of claims 1 to 3.

Carbon dioxide (CO2) has a problem that it has a high rubber permeability and escapes after several days, but there is no problem in the short-term purpose of preventing the building from collapsing against shaking such as an earthquake.

In the Great Hanshin-Awaji Earthquake, the occurrence of fire and the spread of fire spread increased the damage. The distribution of fire points is large in areas with seismic intensity 6 or higher (particularly seismic intensity 7), and is almost proportional to house damage. An example of a fire-resistant building that lost fire resistance due to destruction by earthquake motion, and the fire that broke out from the fire-resistant building spread to adjacent buildings due to the strength of the fire due to the large number of dangerous or flammable materials, collapse of the building, etc. there were. ("Hanshin-Awaji earthquake lesson information collection", Cabinet Office homepage). Therefore, it can be said that it is first important to prevent the collapse of buildings from the viewpoint of preventing fire.

In this respect, by filling carbon dioxide gas (CO2) in the interior, not only the fire resistance of the structure is improved, but also when the structure burns out due to the spread of the surrounding buildings, the carbon dioxide filled in the interior. (CO2) can act as a fire extinguishing agent and can prevent the building from being burned out and prevent further spread of fire spread. In this way, the structure filled with carbon dioxide (CO2) has a great effect that it can stop the spread of fire spread, contrary to a normal fireproof structure, by being destroyed by an earthquake. The fire can be extinguished by reducing the oxygen concentration in the air from about 21% to 15% or less by carbon dioxide (CO2) released from the destroyed structure. Carbon dioxide (CO2) is used as a fire extinguisher, but there has been no technology for filling carbon dioxide (CO2) into the earthquake resistant structure.

Since carbon dioxide (CO2) is an inert and stable gas and does not cause chemical changes in electronic equipment, it is possible to incorporate an electronic device for controlling internal pressure inside the structure filled with gas. is there.

In addition, since carbon dioxide (CO2) is about 1.5 times heavier than air, the structure can be stably deployed in the atmosphere.

Next, the building collapse prevention method according to claim 5 is a method of continuing to support the whole building with an optimum force even while shaking, and the load is concentrated on a part of the plurality of buildings to be commissioned with each other. The building collapse prevention method according to claim 3, wherein the internal pressure of the structure is controlled by supplying and exhausting gas so as not to occur.

The method for preventing the collapse of a building according to claim 5 is the data regarding the method of shaking of the earthquake and the load acting on the building when the internal pressure of the structure is changed in various ways obtained by conducting a survey in advance. During this time, the vibration data observed by the high-precision seismometer is predicted in real-time for the loads acting on multiple buildings that are commissioned to each other, so that the load is not concentrated on some buildings. The internal pressure of the structure is controlled by changing the internal pressure and feeding back seismic data observed with a high-precision seismometer.

The internal pressure of the structure is controlled by supplying and exhausting air using an electronically controlled throttle valve and an electronically controlled exhaust shutter having excellent response characteristics. The air supply mechanism can be configured in a unified manner for the entire wall or building and for each structure, but the latter can increase the response speed.

Next, the building collapse prevention method according to claim 6 is a method of continuing to support the entire building with an optimum force even while shaking, and controlling the internal pressure of the structure after deployment by gas supply and exhaust. The building collapse prevention according to claim 1 or 2, wherein the vibration of the building is reduced and the natural period of the building is instantaneously changed so that the building does not resonate with the period of the earthquake shaking. Is the method.

The natural period of the building becomes longer as the building becomes higher, and the natural period T of the primary mode is T = h (0.02 + 0.01α) (h: height of the building (m), α: height of the building. It is expressed as the percentage of steel-framed floors occupied. However, the natural period becomes shorter as the surface is harder or the wall amount is more rigid. That is, the natural period varies depending on the weight and rigidity distribution of each floor of the building.
In addition, if the earthquake shakes greatly and the building becomes plastic beyond the elastic limit, the rigidity decreases and the natural period becomes longer.
Furthermore, the natural period varies depending on the torsional vibration due to the eccentric distance and the effect of wind if it is a high-rise building.

Therefore, the internal pressure of the structure after deployment is controlled by gas supply / exhaust to reduce the shaking of the building, and the natural period of the building is changed instantaneously so that the building does not resonate with the period of earthquake shaking. To do. For this reason, the natural period is changed by controlling the internal pressure of the structure to change the rigidity and eccentric distance of each floor of the building, so that the entire building can be supported with an optimum force even while it is shaking.

Next, the building collapse prevention method according to claim 7 is the same as the building collapse prevention method according to claim 4, in order to prevent the collapse of the building comprehensively by preventing the building from spreading, etc. The building collapse prevention method according to claim 5 or 6, wherein an internal pressure of the structure is controlled by supply and exhaust of carbon dioxide (CO2).

Next, the building collapse prevention device according to claim 8 is a device that embodies the building collapse prevention method according to claim 1, and the structure that can be developed by filling the interior with gas, It comprises fixing means for fixing the structure to the building, detection means for detecting the possibility of building collapse, and deployment means for deploying the structure when there is a risk of building collapse. The structure is fixed to the inner wall of the building in a folded state so that the entire space or the space in contact with the short direction is filled with the structure. It is a building collapse prevention device characterized in that it expands by filling the interior of the gas and increases the wall thickness of the building to instantaneously increase the earthquake resistance of the building.

Next, a building collapse prevention device according to claim 9 is a device that embodies the building collapse prevention method according to claim 2, and the structure that can be developed by filling the interior with gas, It comprises a fixing means for fixing the structure to the building, a detection means for detecting the possibility of building collapse, and a deploying means for deploying the structure when there is a risk of building collapse, and the bottom surface of the structure contacts the ground after deployment. In the folded state, it is fixed in advance to the outer wall of the building, and when there is a possibility of the building collapsing, it is expanded by filling the inside of the structure with gas, and the thickness of the building wall is reduced. The building collapse prevention device is characterized in that the earthquake resistance of the building is instantaneously increased by increasing it.

Next, the building collapse prevention device according to claim 10 is a device that embodies the building collapse prevention method according to claim 3, and the structure that can be developed by filling the interior with gas, A fixing means for fixing the structure to the building, a detecting means for detecting the possibility of the building collapse, and a deploying means for expanding the structure when there is a risk of the building collapse. In order to fill the structure, the structure is fixed in advance to the outer wall of the building in a folded state, and when there is a risk of building collapse, the structure is expanded by filling with gas. The building is characterized in that the space between adjacent buildings is filled with the structure so that the buildings are contracted with each other and the earthquake resistance of the building is instantaneously increased by integrating a plurality of buildings. Collapse prevention It is the location.

Next, the building collapse prevention device according to claim 11 is a device that embodies the building collapse prevention method according to claim 4, and the deployment means uses filling of carbon dioxide (CO 2). The building collapse preventing device according to any one of Items 8 to 10.

Next, the building collapse preventing device according to claim 12 is a device that embodies the building collapse preventing method according to claim 5, and is developed by filling the inside with gas, and the internal pressure is adjusted by supplying and exhausting the gas. The structure that can be controlled, a fixing means for fixing the structure to a building, a detecting means for detecting the possibility of building collapse, a deploying means for deploying the structure when there is a risk of building collapse, It consists of control means for controlling the internal pressure of the structure, and the internal pressure of the structure after deployment is adjusted by gas supply and exhaust so that the load does not concentrate on some of the buildings that are mutually commissioned. The building collapse prevention device according to claim 10, wherein the building collapse prevention device is controlled.

Next, the building collapse prevention device according to claim 13 is a device that embodies the building collapse prevention method according to claim 6 and is developed by filling the interior with gas, and the internal pressure is increased by supplying and exhausting gas. The structure that can be controlled, a fixing means for fixing the structure to a building, a detecting means for detecting the possibility of building collapse, a deploying means for deploying the structure when there is a risk of building collapse, It comprises control means for controlling the internal pressure of the structure, and the internal pressure of the structure after deployment is controlled by gas supply / exhaust to reduce the shaking of the building and to change the natural period of the building instantaneously. The building collapse prevention device according to claim 8 or 9, wherein the building does not resonate with the period of the shaking.

Next, the building collapse prevention device according to claim 14 is a device that embodies the building collapse prevention method according to claim 7, and the internal pressure of the structure after deployment is supplied and discharged by carbon dioxide (CO2). The building collapse preventing device according to claim 12 or 13, wherein the building collapse preventing device is controlled.

Next, the structure according to claim 15 is a structure used for the building collapse prevention device according to any one of claims 8 to 14, characterized by comprising a cord and a rubber sheet.

In the structure according to the fifteenth aspect, a special rubber sheet called an inner liner is attached to the inside of the carcass cord that retains the shape of the structure and serves as a skeleton of the structure.

When the gas supply to the inside of the structure body is performed from outside the structure body, it is necessary to provide a valve to the outside of the structure body, so that there is a possibility that sufficient airtightness cannot be maintained. Therefore, the structure according to claim 15 is similar to a tubeless tire of an automobile in that the structure is fixed to a metal mounting plate with a beat wire bundled with strong piano wires, and the tensile force of the carcass cord due to internal pressure Airtightness can also be maintained by trying to catch it. When the gas cylinder or the gas generating agent is built in the structure, the used gas cylinder or the gas generating agent can be replaced with a new one by removing the mounting plate.
In addition, the tubeless tire of an automobile is a type of tire that holds air only with the wheel and the tire without using the tire tube, and the carcass cord and the inner liner are integrally molded, so that the internal pressure is made higher than the tube tire. Can do. Further, even if a nail or the like is pierced, the rubber of the tire holds the nail, so that the hole does not expand in a chain, and the internal pressure is gradually reduced as compared with the tube tire.

Next, in the building collapse preventing device according to claim 16, the structure after the expansion has a honeycomb structure in order to further increase the strength of the structure after the expansion. It is a building collapse prevention apparatus in any one of Claim 14.

The structure according to claim 16 is a honeycomb structure that can be expanded from a folded state by filling a gas therein, and the structure is filled with a regular hexagonal column. Each regular hexagonal column is connected to only one direction, and the other side is folded so that it can be unfolded from the folded state.

Next, the structure according to claim 17 is a structure used for a building collapse prevention device according to claim 16, wherein the expanded structure is a honeycomb structure when there is a risk of building collapse. is there.

The honeycomb structure is developed by burning a gas generating agent built in each regular hexagonal honeycomb structure partition wall or supplying gas from a gas cylinder. When the internal pressure is not controlled, the foam can be expanded by being expanded.

In the same way as when stacking structures, it is necessary to secure the passage of gas exhausted from other regular hexagonal columns, such as by attaching exhaust tubes, so that the regular hexagonal columns that make up the honeycomb structure are in close contact with each other. It becomes.

The honeycomb structure has a multilayer structure in which regular hexagonal columns are arranged horizontally and vertically in order to increase the strength against not only shear stress but also normal stress.

Next, the structure according to claim 18 is filled with carbon dioxide (CO2) when there is a risk of collapse of the building in order to prevent the collapse of the building comprehensively by preventing the spread of the building from spreading. It is a structure used for the building collapse prevention apparatus in any one of Claims 8-14.

Next, the control device according to claim 19 is a structure used in the building collapse prevention device according to claim 12 so that the load is not concentrated on a part of a plurality of buildings that are mutually commissioned. Is a control device that controls the internal pressure of the gas by supplying and exhausting gas.

The control device according to claim 19, inspecting the site in advance, and preparing a database of the load acting on the building when the earthquake shake and the internal pressure of the structure are changed variously, The load acting on the building is predicted by collating the earthquake shaking method and the internal pressure of the structure at that time with the database.

At this time, it is possible to perform real-time arithmetic processing by parallel processing by performing nonlinear system identification using a neural network or the like. In this case, when an earthquake occurs, the load acting on the building is predicted in real time by inputting the method of shaking of the earthquake and the internal pressure of the structure at that time to the neural network.

Then, by changing the internal pressure of the structure so that the load does not concentrate on some buildings, and then feeding back the value of the shaking of the building observed with a high-precision seismometer again, Control internal pressure. The initial value of the internal pressure of the structure is set so that the shaking of the building is minimized by statistically estimating how the earthquake is likely to occur locally.

According to a nineteenth aspect of the present invention, the internal pressure of the structure is controlled by supplying and exhausting air using an electronically controlled throttle valve and an electronically controlled exhaust shutter having excellent response characteristics. The air supply mechanism can have a unified configuration for each wall or the entire building and a configuration for each structure, but the latter can increase the response speed.

Finally, the control apparatus according to claim 20, together with reducing the sway of the building, in order to cycle the building earthquake shaking is prevented from resonating, the building collapse prevention device according to claim 13, wherein after expansion A control device that controls the internal pressure of a structure to be used by supplying and exhausting gas.

The natural period of the building becomes longer as the building becomes higher, and the natural period T of the primary mode is T = h (0.02 + 0.01α) (h: height of the building (m), α: height of the building. It is expressed as the percentage of steel-framed floors occupied. However, the natural period becomes shorter as the surface is harder or the wall amount is more rigid. That is, the natural period varies depending on the weight and rigidity distribution of each floor of the building.
In addition, if the earthquake shakes greatly and the building becomes plastic beyond the elastic limit, the rigidity decreases and the natural period becomes longer.
Furthermore, the natural period varies depending on the torsional vibration due to the eccentric distance and the effect of wind if it is a high-rise building.

Therefore, the control device according to claim 20 controls the internal pressure of the structure after deployment by gas supply / exhaust to reduce the shaking of the building, and instantaneously changes the natural period of the building to reduce the earthquake. Prevent the building from resonating with the period of shaking. For this reason, by controlling the internal pressure of the structure and changing the rigidity and eccentric distance of each floor of the building, the natural period is changed, and the entire structure is supported so as to continue to support the entire building with an optimum force even while shaking. Control internal pressure.

For this reason, the control device according to claim 20 preliminarily surveys the site in advance to create a database of changes in the shaking of the building when the shaking of the earthquake and the internal pressure of the structure are variously changed. At the time of occurrence, the shaking of the building is predicted by collating the earthquake shaking method and the internal pressure of the structure at that time with the database.

At this time, it is possible to perform real-time arithmetic processing by parallel processing by performing nonlinear system identification using a neural network or the like. In this case, when an earthquake occurs, the shaking of the building is predicted in real time by inputting the method of shaking of the earthquake and the internal pressure of the structure to the neural network or the like.

Then, while reducing the shaking of the building and changing the internal pressure of the structure so that the building does not resonate with the period of the shaking of the earthquake, the structure is then fed back by feeding back the value of the shaking of the building to be observed again To control the internal pressure. The initial value of the internal pressure of the structure is set so that the shaking of the building is minimized by statistically estimating how the earthquake is likely to occur locally.

Since the structure in the present invention is fixed to the wall in a folded state during normal times and is deployed only when there is a risk of the building collapsing, the space can be widely used.

By expanding the structure instantly, the thickness of the wall can be increased, and the rigidity of the structure can be increased by the internal pressure, so that the building can be prevented from collapsing.

When the entire inner wall of the building or the space in contact with the entire longitudinal direction is filled with the structure, torsional vibration due to an increase in the eccentric distance can be prevented.

In addition, by controlling the internal pressure of the structure, it is possible to reduce the shaking of the building and to avoid resonating the building with the period of the shaking of the earthquake. Can be prevented from collapsing.

When carbon dioxide (CO2) is used as the gas filled in the structure, it is possible to prevent the building from spreading. Moreover, since a new use of CO2 can be developed, it can contribute to CO2 reduction in the atmosphere.

Since the structure can be externally attached to a wall or the like of an existing building, a major renovation such as removing a wall material is unnecessary, and the cost can be reduced and the structure can be installed in a short period of time.

FIG. 1 is an explanatory view showing a state in which a folded structure is fixed to an inner wall. FIG. 2 is an explanatory view showing a state in which the structure is developed in the building. FIG. 3 is an explanatory view showing a state in which the folded structure is fixed to the outer wall. FIG. 4 is an explanatory view showing a state in which the structure is developed outside the building. FIG. 5 is an explanatory view showing a state in which the structure is expanded in a pyramid shape outside the building. FIG. 6 is an explanatory view showing a state in which a plurality of buildings are integrated through a structure. FIG. 7 is an explanatory view showing an example of a procedure for developing the structure. FIG. 8 is an explanatory view showing an example of a procedure for fixing the structure to the wall surface. FIG. 9 is an explanatory view showing an example of a gas filling mechanism inside the structure. FIG. 10 is an explanatory diagram showing an example of a gas filling and internal pressure control mechanism inside the structure. FIG. 11 is an explanatory diagram showing an example of a gas filling and internal pressure control mechanism inside the structure fixed in a superimposed manner. FIG. 12 is an explanatory view showing an example of the gas filling and internal pressure control mechanism inside the structure by the gas generating agent. FIG. 13 is an explanatory view showing an example of a mechanism for performing gas filling inside the structure in an integrated manner. FIG. 14 is an explanatory diagram showing an example of a cross-sectional view of a structure with a built-in gas cylinder. FIG. 15 is an explanatory view showing an example of a cross-sectional view of a structure containing a gas generating agent. FIG. 16 is an explanatory diagram showing an example of a cross-sectional view of a structure that can be filled with gas from the outside. FIG. 17 is an explanatory view showing an example of a structure having a honeycomb structure. FIG. 18 is an explanatory diagram showing an example of a block diagram of the internal pressure control mechanism of the structure.

Below, the Example of the building collapse prevention method and building collapse prevention apparatus which concern on the best embodiment of this invention is described.

FIG. 1 shows an embodiment of the building collapse prevention method according to claim 1 and the building collapse prevention device according to claim 8, wherein the structure 2 is expanded on the entire inner wall of the building 1 after deployment or in the longitudinal direction or in the short side. It is a perspective view which shows the state fixed to the wall beforehand in the folded state so that the space which touches all of directions may be filled up with the said structure 2. FIG. In order not to block the entrance / exit of the building 1, the upper part of the entrance / exit is completely filled in the longitudinal direction. Since such an embodiment is adopted, the space in the building can be widely utilized during normal times.

FIG. 2 is a perspective view showing a state in which the structure 2 is expanded inside the building 1. The wall surface with the doorway is filled with the space in contact with the entire longitudinal direction, and the wall surface other than the doorway is the entire wall. The space in contact with was filled up. Note that the window 2 and the like are filled with the structure 2 in the same way as the doorway. However, it is desirable to fill all the spaces as much as possible in order to withstand the shearing force caused by earthquakes. Since such an embodiment is adopted, the seismic resistance can be increased without increasing the eccentric distance only when there is a possibility of building collapse.

FIG. 3 shows an embodiment of the building collapse prevention method according to claim 2 and the building collapse prevention device according to claim 9, wherein the structure 2 is folded so that the bottom surface of the structure 2 is in contact with the ground after deployment. It is a perspective view which shows the state previously fixed to the outer wall of the building in the folded state. Since such an embodiment is adopted, a space such as a garden can be widely used during normal times.

FIG. 4 is a perspective view showing a state in which the structure 2 is developed outside the building 1 so that the bottom surface is in contact with the ground. Since such embodiment was employ | adopted, earthquake resistance can be increased only when there exists a possibility of building collapse.

Similarly, FIG. 5 is an example of the building collapse prevention method according to claim 2 and the building collapse prevention device according to claim 9, and when there is a sufficient unfolded area, the structure 2 is deployed in a superimposed manner. It is a perspective view which shows the state expand | deployed to the pyramid type. By adopting such an embodiment, the earthquake resistance of the building can be further increased.

FIG. 6 shows an embodiment of the building collapse prevention method according to claim 3 and the building collapse prevention device according to claim 10, wherein the building 2 is filled with a structure 2 after filling the space between the building 1 and the building 1. It is a perspective view which shows the state which entrusted mutual and integrated several buildings. Earthquake resistance can be increased by building support. In addition, if it can be entrusted to a strong building, a particularly great effect can be expected.

The structure 2 in the above embodiment is expanded according to the flow indicated by the arrow in FIG. In addition to this, various folding methods and unfolding procedures can be considered, but in the embodiment, the procedure that is considered to be the simplest was adopted. Since such an unfolding procedure is adopted, there are few crease portions and the unfolding is easy and the rigidity can be maintained.

FIG. 8 is a cross-sectional view showing a state in which the structure 2 is fixed to the wall 5 via a dedicated mounting plate 4. By fixing to the wall 5 via the dedicated mounting plate 4, the airtightness of the structure 2 can be maintained. The dedicated mounting plate 4 can be fixed to the wall 5 with a thick iron round nail (CN nail) 3 used in the frame wall method (2 × 4 method in the United States), and can be driven using an automatic nailer. it can. The thick iron round nail (CN nail) 3 and the structure-specific mounting plate 4 in FIG. 8 correspond to the fixing means in the claims.

FIG. 9 is an explanatory view showing a mechanism in which gas is filled in the structure 2. The national instantaneous warning system (J-ALERT) receiver 9 and the high-precision seismometer 10 in FIG. 9 correspond to the detection means in the claims.

The detection means detects the possibility of building collapse, a detection signal is transmitted to the control device 8 via the cable 11, and a deployment command is wirelessly transmitted from the control device 8 to the structure 2. The control device 8 and the structure 2 can be wired with a cable, but wireless is used in the embodiment. In the embodiment, since radio is employed, the airtightness of the structure 2 can be maintained high, and troublesome wiring is not required. Moreover, since no major renovation such as removing the wall material is required, the cost can be reduced compared to the conventional seismic reinforcement technology, and it can be installed in a short period of time.

In the structure 2 that has received the deployment command, the built-in wireless remote-operated electronically controlled throttle valve 7 is opened, air supply from the gas cylinder 6 starts, and the interior is filled with gas. When carbon dioxide (CO2) is used as the gas filled in the interior, it is possible to prevent the fire from spreading in the building. Moreover, since a new use of CO2 can be developed, it can contribute to CO2 reduction in the atmosphere. The gas cylinder 6 and the wireless remote-controlled electronically controlled throttle valve 7 in FIG. 9 correspond to the developing means in the claims.

FIG. 10 is an explanatory view showing a mechanism for controlling supply / exhaust of the structure 2 as well as expanding the structure 2 by filling a gas therein. The control device 8, the wireless remote control electronic control throttle valve 7, and the wireless remote control electronic control exhaust shutter 13 of FIG. 10 correspond to the control means in the claims.

A control signal is transmitted wirelessly from the control device 8 to the structure 2. Based on the control signal, the wireless remote control electronic control throttle valve 7 and the wireless remote control electronic control exhaust shutter 13 are opened and closed to control the internal pressure of the structure 2. At this time, the internal pressure of the structure 2 is constantly measured by the pressure sensor 12 and transmitted to the control device 2 by radio. Since such an embodiment is adopted, by controlling the internal pressure of the structure 2, the shaking of the building can be reduced, and the period of the shaking of the earthquake and the resonance of the building can be avoided. .

FIG. 11 is an explanatory diagram showing a gas filling and internal pressure control mechanism inside the structure 2 when the structure 2 is fixed in a superimposed manner as shown in FIG. In this case, an exhaust tube 14 is provided as a passage for gas exhausted from the structure 2 in order to bring the structure 2 into close contact with each other. As shown in FIG. 6, when the space between adjacent buildings is completely filled with the structure 2, the exhaust tube 14 is provided so that the air is exhausted from the upper part of the structure 2. By providing the exhaust tube 14 at the joint portion of the structure 2, even when a shearing force or a vertical load is applied to the structure 2, it is possible to ensure the gas passage without being blocked.

FIG. 12 is an explanatory view showing a mechanism for filling the structure 2 with gas using combustion of the gas generating agent 17 in the same manner as an automobile airbag. In this case, the internal pressure control is performed only by opening and closing the wireless remote-operated electronically controlled exhaust shutter. The wireless remote ignition device 18 is activated by a deployment command transmitted wirelessly from the control device 8 to burn the gas generating agent 17. Since the gas generating agent burns explosively, the structure 2 can be rapidly deployed and a high internal pressure can be obtained as compared with the supply from the gas cylinder.

FIG. 13 is an explanatory view showing a mechanism for supplying the gas filled in the structure 2 from the gas supply device 15 instead of from the gas cylinder built in the structure 2. In this case, the structure 2 can be further reduced in weight, and the unit price of the structure 2 can be reduced, but it is necessary to supply high-pressure gas from the gas supply device 15. Moreover, it is necessary to connect the gas supply device 15 and the structure 2 with an air supply tube, and the installation is slightly complicated, and the airtightness is inferior compared with the case where a gas cylinder is built in the structure 2. become. However, replacement of the gas cylinder after use is easier than replacing the gas cylinder 6 of the gas supply device 15 than replacing the gas cylinder built in the structure 2.

14 to 16 are cross-sectional views showing the structure when the structure 2 is formed of a cord layer and a rubber sheet in the same manner as a tubeless tire of an automobile. The cord 19 and the rubber sheet 20 in FIGS. 14 to 16 correspond to those in the fifteenth aspect. Since the cord layer forming the skeleton of the structure 2 is made of polyester, nylon, aramid, rayon cord or the like, it can withstand the load, impact, and filling gas pressure received by the structure 2.

FIG. 16 shows a structure in which a structure 2 is fixed to a metal mounting plate 22 dedicated to a structure with a beat wire 21 in which powerful piano wires are bundled, and a carcass cord pulling force due to internal pressure is received similarly to a tubeless tire of an automobile. It is sectional drawing which shows the structure made like this.
In the mechanism as shown in FIG. 13 that supplies the gas filling the structure 2 from a gas supply device in a unified manner, it is necessary to provide the structure 2 with a valve 23, so that sufficient airtightness cannot be maintained. There is. Therefore, it is possible to maintain the airtightness when the gas is supplied from outside the structure by using the same structure as the tubeless tire of an automobile. Further, when a gas cylinder or a gas generating agent is built in the structure 2, the used gas cylinder or gas generating agent can be replaced with a new one.

FIG. 17 is a perspective view showing a state in which a honeycomb structure is used to further increase the rigidity of the structure 2. In the embodiment, a regular hexagonal honeycomb structure partition wall 24 is employed, and only one unidirectional surface of each regular hexagonal column is connected so that it can be developed from a folded state. Furthermore, since the two-layer structure of a structure in which regular hexagonal columns are arranged horizontally and a structure in which they are arranged vertically is employed, the strength can be increased not only against shear stress but also against vertical stress.

FIG. 18 is an explanatory diagram showing a block diagram of the internal pressure control mechanism of the structure, and corresponds to the control means in the claims. First of all, there is a possibility that the building collapses due to reports on earthquakes, typhoons, etc., so that the setting unit can be switched between manual and automatic so that the structure 2 can be deployed at an early stage. To do.

When automatic is selected, the possibility of building collapse is detected by the nationwide instantaneous warning system (J-ALERT) receiver 9 and the high-precision seismometer 10 that can detect P waves, and the internal pressure of the structure 2 is detected by the control calculation unit. An initial value is calculated and a control signal is transmitted to the structure 2 wirelessly. Based on the transmitted control signal, the electronic control throttle valve 7 is released to expand the structure 2. The initial value of the internal pressure of the structure is set so that the shaking of the building is minimized by statistically estimating how the earthquake is likely to occur locally.

In order to reduce the shaking of the building and prevent the building from resonating with the period of earthquake shaking, the natural period is changed by controlling the internal pressure of the structure to change the rigidity and eccentric distance of each floor of the building, The internal pressure of the structure 2 is controlled so as to continue to support the entire building with an optimum force even while it is shaking.

For this reason, the control device according to claim 20 preliminarily surveys the site in advance to create a database of changes in the shaking of the building when the shaking of the earthquake and the internal pressure of the structure are variously changed. At the time of occurrence, the shaking of the building is predicted by collating the earthquake shaking method and the internal pressure of the structure at that time with the database.

At this time, it is possible to perform real-time arithmetic processing by parallel processing by performing nonlinear system identification using a neural network or the like. In this case, when an earthquake occurs, the shaking of the building is predicted in real time by inputting the method of shaking of the earthquake and the internal pressure of the structure at that time to the neural network or the like.

Then, after changing the internal pressure of the structure 2, the internal pressure of the structure is controlled by feeding back the value of the shaking of the building to be observed again. Since such an embodiment is adopted, it is possible to reduce the shaking of the building and to prevent the building from resonating with the period of the shaking of the earthquake.

It can be used to prevent various buildings from collapsing in the event of an earthquake or typhoon. In addition, when the structure is filled with carbon dioxide (CO2), it can be used to prevent the spread of fire in a building and to reduce CO2 in the atmosphere.

1 Building 2 Structure 3 Heavy iron round nail (CN nail)
4 Dedicated mounting plate for structure 5 Wall 6 Gas cylinder 7 Wireless remote control electronic control throttle valve 8 Controller 9 National instantaneous alarm system (J-ALERT) receiver 10 High-precision seismometer 11 Cable 12 Pressure sensor 13 Wireless remote control electronic Control exhaust shutter 14 Exhaust tube 15 Gas supply device 16 Air supply tube 17 Gas generating agent 18 Wireless remote ignition device 19 Code 20 Rubber sheet 21 Beat wire 22 Structure-specific metal mounting plate 23 Valve 24 Honeycomb structure partition wall (regular hexagonal column)

Claims (20)

The structure that can be expanded by filling the interior with gas is folded so that the entire inner wall of the building or the space in contact with the entire longitudinal direction or the entire short direction is filled with the structure after the expansion. In this state, it is fixed to the inner wall of the building in advance, and when there is a risk of the building collapsing due to an external factor such as an earthquake, it is expanded by filling the inside of the structure with the thickness of the wall of the building. Building collapse prevention method characterized by instantaneously increasing the earthquake resistance of the building by increasing the height. The structure that can be deployed by filling gas into, so that the bottom surface of the structure after deployment in contact with the ground in advance fixed to the outer wall of a building in a folded state, outside of the earthquake or the like When there is a risk of building collapse due to mechanical factors, the structure is expanded by filling the interior with gas, and the building's wall thickness is increased, thereby instantly increasing the earthquake resistance of the building. A method for preventing building collapse. A structure that can be expanded by filling the interior with gas is fixed in advance to the outer wall of the building in a folded state so that the space between adjacent buildings is filled with the structure after expansion. When there is a risk of building collapse due to external factors such as earthquakes, it is developed by filling the structure with gas and filling the space between adjacent buildings with the structure A building collapse prevention method characterized by instantaneously increasing the earthquake resistance of a building by entrusting buildings to each other and integrating a plurality of buildings. The building collapse prevention method according to any one of claims 1 to 3, wherein the structure is developed by filling with carbon dioxide gas (CO2). The building collapse prevention method according to claim 3, wherein the internal pressure of the structure is controlled by gas supply and exhaust so that a load does not concentrate on a part of a plurality of buildings that are mutually commissioned. . The internal pressure of the structure after deployment is controlled by gas supply and exhaust to reduce the shaking of the building, and the natural period of the building is changed instantaneously so that the building does not resonate with the earthquake shaking period. The building collapse prevention method according to claim 1 or 2, characterized in that: The building collapse prevention method according to claim 5 or 6, wherein the internal pressure of the structure after deployment is controlled by supply and exhaust of carbon dioxide (CO2). Structure that can be expanded by filling the interior with gas, fixing means for fixing the structure to the building, detection means for detecting the possibility of building collapse , building may collapse due to external factors such as earthquake In some cases, the structure is folded so that the entire inner wall of the building or the space in contact with the entire longitudinal direction or the entire short direction is filled with the structure after expansion. In a state of being fixed in advance to the inner wall of the building, when there is a risk of building collapse due to an external factor such as an earthquake , a deployment command is transmitted to the structure based on the result detected by the detection means, A building collapse prevention device, which expands by filling a gas inside the structure and instantaneously increases the earthquake resistance of the building by increasing the thickness of the wall of the building. Structure that can be expanded by filling the interior with gas, fixing means for fixing the structure to the building, detection means for detecting the possibility of building collapse , building may collapse due to external factors such as earthquake consists developing means for developing the structure when, as is the bottom surface of the structure after deployment in contact with the ground in advance fixed to the outer wall of a building in a folded state, building external factors such as earthquakes When there is a possibility of collapse, an expansion command is transmitted to the structure based on the result detected by the detection means, and the structure is expanded by filling the inside of the structure, A building collapse prevention device characterized by instantaneously increasing the earthquake resistance of a building by increasing its thickness. Structure that can be expanded by filling the interior with gas, fixing means for fixing the structure to the building, detection means for detecting the possibility of building collapse , building may collapse due to external factors such as earthquake In the case where the structure is expanded, and the structure is folded and fixed to the outer wall of the building in advance so that the space between adjacent buildings is filled with the structure after expansion. When there is a risk of building collapse due to an external factor such as an earthquake , a deployment command is transmitted to the structure based on the result detected by the detection means, and the interior of the structure is filled with gas. The building is contracted with each other by filling the space between adjacent buildings with the structure, and the earthquake resistance of the building is instantaneously increased by integrating multiple buildings. Defeat building Prevention device. The building collapse prevention device according to any one of claims 8 to 10, wherein the developing means uses carbon dioxide (CO2) filling. The system further includes a control unit that controls the internal pressure after the structure is expanded by supplying and exhausting gas, and the control unit controls the load so as not to concentrate on a part of a plurality of buildings that are mutually commissioned. The building collapse prevention device according to claim 10. The apparatus further comprises control means for controlling the internal pressure after deployment of the structure by supplying and exhausting gas, and the control means reduces fluctuation of the building and instantaneously changes the natural period of the building by the control by the control means . The building collapse prevention device according to claim 8 or 9, wherein the building does not resonate with the period of shaking of the earthquake. The building collapse prevention device according to claim 12 or 13, wherein the internal pressure of the structure after deployment is controlled by supply and exhaust of carbon dioxide (CO2). The structure used for the building collapse prevention device according to any one of claims 8 to 14, comprising a cord and a rubber sheet. The building collapse prevention device according to any one of claims 8 to 14, wherein the structure after development has a honeycomb structure. The structure used for the building collapse prevention device according to claim 16, wherein the developed state is a honeycomb structure when there is a possibility of building collapse due to an external factor such as an earthquake . Structure used for a building collapse prevention device according to claim 14 claim 8, characterized in Rukoto filled with carbon dioxide (CO2) when there is a possibility of building collapse in external factors such as earthquakes body. Controlling the internal pressure of the structure used in the building collapse prevention device according to claim 12 by supplying and exhausting gas so that the load does not concentrate on a part of a plurality of buildings that are mutually commissioned. Control device characterized. 14. The internal pressure of the structure used in the building collapse prevention device according to claim 13 after deployment is controlled by gas supply and exhaust to reduce the shaking of the building and prevent the building from resonating with the period of shaking of the earthquake. A control device.