JP2015059391A - Air vibration-cutting architectural structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an architectural structure having superior functions of construction easiness, maintenance inspection easiness, building balance holding properties, air sealability, repair properties, etc., as an air vibration-cutting architectural structure.SOLUTION: An air vibration-cutting architectural structure comprises: a lower base 4 which has a smooth surface part 12 formed along an upper surface peripheral edge; an upper base 6 mounted on the lower base 4 and having a cut groove 18, a metal plate 22, and a pressure air supply pipe; and a building formed integrally with the upper base 6. Further, the air vibration-cutting architectural structure has a cylinder 52 fitted to the upper base, a cover 54, a pressure air supply pipe 56 which supplies pressure air into a cylinder 52, a slide disk 58 housed in the cylinder 52, and a piston 60 mounted on the slide disk 58 and housed in the cylinder 52, and also has a balancer 50 enabling the piston 60 to move up and down airtightly in the cylinder 52 with an O ring mounted on an upper peripheral surface of the piston 60.

Description

  The present invention relates to a seismic building using air. More specifically, the present invention relates to a building composed of a lower base, an upper base placed so as to cover the upper surface, and a building formed integrally with the upper base. The present invention relates to an air-seismic building that floats the building by supplying air between the bases to release the shaking of the building due to an earthquake.

  In order to reduce the shaking of the building in the event of an earthquake, a conventional seismic isolation device that can provide a seismic isolation effect by installing a cushioning material such as rubber between the foundation and the building and releasing the shaking of the earthquake Is used.

  When the above seismic isolation device is used, the building is placed on a cushioning material such as rubber, so that it may be shaken or vibrated due to large wind pressure such as typhoons or vibrations that occur when a vehicle passes. This vibration is always uncomfortable.

  In order to protect the building and household assets and residents from the earthquake, the upper base is placed on the lower base of the building, and sealing means is provided to prevent air from leaking from the gap between the lower base and the upper base. In the event of an earthquake, a pneumatic floating seismic isolation device (air-isolation) that exhibits the seismic isolation effect that floats the building by supplying air between the lower base and the upper base and releases the shaking of the earthquake has been released. (For example, refer to Patent Document 1).

  In addition, an air-seismic building that has improved sealing means and can be easily constructed and maintained is disclosed (for example, see Patent Document 2).

  In addition, a control box that controls the operation of the air seismic device has been released in order to effectively use the compressed air in the air tank that is installed in the air seismic device in the event of frequent earthquakes and power outages. (For example, refer to Patent Document 3).

  Further, as a further improved technique, a device has been proposed that corrects a positional shift between a lower base installed on the ground and a base-isolated upper base that is integrated with the building, after shaking has subsided. This device is designed to inject high-pressure air into a crushed air bag when a displacement occurs between the lower base installed on the ground and the upper base formed integrally with the building. This is a device that restores a positional shift between the two to the original position by inflating (see, for example, Patent Document 4).

  However, in the case of the techniques of Patent Documents 2 to 4, the ease of installation of the sealing means at the time of construction, the ease of maintenance and inspection at normal times, the balance of the building balance at the occurrence of an earthquake, the air tightness of the sealing means, There are still some inadequate functions for air-seismic buildings, such as the ability to correct misalignment between the lower and upper foundations after the earthquake has subsided.

Utility Model Registration No. 3119675 JP 2009-150198 A Utility Model Registration No. 3170212 JP 2008-208696 A

  An object of the present invention is to provide a building having excellent functions as an air-seismic building such as seismic isolation, ease of construction, ease of maintenance, building balance retention, air tightness, and misalignment repairability. There is.

  As a result of studying the above problems, the present inventors have found that the air-seismic building described below achieves the object of the present invention.

[1] A lower base formed by forming a smooth surface portion having a predetermined width along at least the periphery of the upper surface;
An upper base placed over the upper surface of the lower base;
The upper surface of the upper base consists of a building formed integrally with the upper base,
The upper base is
A notch groove formed along the periphery of the lower surface;
A metal plate whose one end is airtightly fixed to the lower side surface of the upper base over the entire side surface of the upper base, and the other end is attached by the elastic force of the metal plate toward the smooth surface portion of the lower base. A plurality of metal plates that are energized and inserted into the notch grooves;
At least one pressurized air supply pipe passing through the upper base from its upper surface to its lower surface;
A balancer penetrating between the upper surface and the lower surface of the upper base and attached to the upper base, wherein the balancer is
These shafts have a large-diameter upper cylinder part, a lower cylinder part having a smaller diameter than the upper cylinder part, and a shoulder part formed from the bottom inner periphery of the upper cylinder part to the top inner periphery of the lower cylinder part. A cylinder that is formed integrally with the same heart,
A lid for hermetically closing the upper opening of the cylinder;
A pressurized air supply pipe that is attached to the lid, passes through the lid, and supplies pressurized air into the cylinder;
A sliding disk stored on the lower end side in the lower cylinder part;
A piston placed on the sliding disk and housed in a cylinder, wherein the piston comprises a large-diameter upper piston portion, a lower piston portion having a smaller diameter than the upper piston portion, and the upper piston portion. A shoulder portion formed from the bottom outer periphery to the top outer periphery of the lower piston portion, and an O-ring is mounted on the peripheral surface of the upper piston portion, and the piston moves up and down in the cylinder by the O-ring. A balancer that can slide in an airtight direction,
Air seismic building with

  [2] The lower surface of the upper base has at least one corner on the periphery thereof, and at least one pair of the metal plates adjacent to each other in the corners overlaps the sides with a predetermined width and The metal stacked on the upper side and the lower side by sticking to the metal plate a rubber plate extending outward while covering the metal plate stacked on the lower side from the side portion on the side of the metal plate stacked on The air-seismic building according to [1], in which a stack of plates is covered with the rubber plate.

  [3] A cylindrical upper position fixing member that is attached through the upper base and the lower surface of the upper base, the top opening of which is detachably crowned and hermetically sealed, and the upper part A cylindrical lower position fixing member that faces the position fixing member and is exposed with its upper surface exposed to the lower base, and the upper position fixing member and the lower position fixing member are connected to each other along their radial direction. The air-isolated building according to [1], further including a position correcting device including a plurality of springs.

  [4] The air seismic building according to [3], wherein the lower position fixing member has a bottomed cylindrical shape.

  [5] The air seismic building according to [1], wherein the smooth surface portion is formed by laminating a coating layer along the upper surface periphery of the lower base.

  According to the present invention, since the balancer is provided to make the gap between the lower base and the upper base at the time of rising of the building uniform at any point, the building at the time of the earthquake is kept floating and tilted as a building. hard.

  Furthermore, when a rubber plate is stacked on the portion where the plurality of metal plates are stacked, the sealing property of the supply air is further enhanced.

  When the position correction device is attached to this air-isolated building, the repairability of the positional deviation between the lower base and the upper base after the earthquake is calm is high. Since the position correction device is made of metal, it has high durability and can withstand long-term use.

  Moreover, when laminating | stacking a coating layer on a smooth surface part, since the smooth surface part of a lower base becomes smoother, the concrete placement of a lower base becomes easy.

It is the schematic which shows an example of the air seismic building before providing the balancer used for this invention, (A) is the front sectional drawing, (B) is along the X-X line in (A). FIG. It is the elements on larger scale which show the overlapping state of the metal plate which mutually adjoins in the corner | angular part A in FIG. 1 (B), (A) is the state before sticking a rubber plate on the upper metal plate of the stacking part. (B) shows the state after sticking the rubber plate. It is a partial enlarged plan view which shows the contact state of the metal plate which adjoins mutually in the linear part B of the periphery in FIG. 1 (B). It is the schematic which shows the air-seismic building of the example of FIG. 1 (A), and is front sectional drawing of the state where the building surfaced with compressed air. It is front sectional drawing which shows the position correction apparatus provided over the lower base in an example of the air-seismic building before providing the balancer used for this invention, an upper base, and its periphery. It is front sectional drawing which shows the smooth surface part formed by laminating | stacking a coating layer along the upper surface periphery of the lower base in an example of the air-seismic building before providing the balancer used for this invention, and its periphery. Front sectional view showing a smooth surface portion formed by embedding a covering layer along the upper surface periphery of a lower base in another example of an air-seismic building before providing a balancer used in the present invention, and its periphery It is. It is the schematic which shows an example of the air-seismic building of this invention, and is plane sectional drawing along the VV line in FIG. 9 (A). BRIEF DESCRIPTION OF THE DRAWINGS It is a front sectional view which shows the balancer provided over the lower base in the example of the air-seismic building of the present invention, the upper base, and the periphery thereof, and (A) is the balancer and the upper base in the vicinity thereof with respect to the lower base. The state before ascending is shown, and (B) shows the state after ascending. It is the elements on larger scale which show the outline of the structure internal material which consists of a piston and a sliding disk in FIG. 9 (A), (B).

  Details of the present invention will be described below.

  The air-seismic building before providing the balancer used for this invention is demonstrated using the example of FIGS.

  FIG. 1 is a schematic view showing an example of an air-seismic building before providing a balancer used in the present invention, (A) is a front cross-sectional view thereof, and (B) is a cross-sectional view of X in FIG. It is plane sectional drawing along a X-ray.

  In FIG. 1 (A), 2 is an air-seismic building, which consists of a lower base 4, an upper base 6 and a building 8. The lower base 4 is made of flat concrete having a predetermined thickness, and stands on the ground 10. The thickness of the lower base 4 is the same as that of a normal building foundation, preferably 150 to 1500 mm, and more preferably 200 to 1000 mm. The planar shape of the lower base 4 can be formed into an arbitrary shape according to the shapes of the upper base 6 and the building 8, but is rectangular in this example. Usually, the planar shapes of the lower base 4 and the upper base 6 are often the same.

  The upper surface of the lower base 4 has a smooth surface portion 12 having a predetermined width smoothly formed at least along the periphery of the upper surface. The predetermined width of the smooth surface portion 12 is preferably 200 to 2000 mm, and more preferably 200 to 1200 mm. The smooth surface portion 12 can be formed by placing the concrete as smoothly as possible when the lower base 4 is formed of concrete. When the smoothness is insufficient, the surface of the smooth surface portion 12 may be further polished with an engine-type rotary rod.

  The upper side of the lower base 4 is preferably exposed at least 30 mm or more from the ground surface (the surface of the ground 10). This is because mud or the like does not enter a notch groove 18 described later.

  In addition, as shown in FIG. 6, a smooth coating layer 13 may be laminated on the upper surface of the smooth surface portion 12. Preferably, as shown in FIG. 7, the covering layer 13 b is preferably embedded in the smooth surface portion 12 b and laminated. By laminating the coating layer 13, the surface of the smooth surface portion 12 can be further smoothed. The covering layer 13 is preferably adhered to the upper surface of the smooth surface portion 12 in an airtight manner. Examples of the fixing method include adhesion and fusion. As the coating layer 13, when using a smooth coating layer forming method by laminating a metal plate such as a tin plate, copper plate, stainless steel plate, joint resin plate, metal plate, etc., the smooth surface portion 12 is particularly easily smoothed. Can do.

  The smoothness of the smooth surface portion 12 is preferably such that the maximum height difference of the unevenness in the vertical direction per 2 m in the length direction of the smooth surface portion 12 (direction along the outer periphery of the smooth surface portion 12) is within ± 1 mm. It is preferable that the maximum height difference of the unevenness in the vertical direction per 1 m in the width direction (perpendicular to the outer periphery) of the smooth surface portion 12 is within ± 1 mm.

  The upper base 6 is made of flat concrete having a predetermined thickness, and is placed so as to cover the upper surface of the lower base 4. The thickness of the upper base 6 is the same as that of a normal building foundation, preferably 100 to 1000 mm, more preferably 200 to 500 mm. The planar shape of the upper base 6 can be arbitrarily formed in accordance with the shapes of the lower base 4 and the building 8, but is rectangular in this example.

  The building 8 is formed integrally with the upper base 6 by fixing the bottom member 14 of the building 8 with bolts 16 on the upper surface of the upper base 6.

  As shown in FIG. 1 (A), the upper base 6 has a notch 18 formed along the entire periphery of the lower surface thereof. The depth of the notch groove 18 along the surface direction of the upper base 6 is preferably formed to be equal to or less than the width of the smooth surface portion 12, more preferably 150 to 500 mm, and particularly preferably 200 to 400 mm. 30-100 mm is preferable and, as for the width | variety of the notch groove 18 (it is the groove width of a perpendicular direction, and the clearance gap between the smooth surface part 12 and the upper base 6), 40-80 mm is more preferable.

  Reference numeral 22 denotes a plurality of metal plates which are attached so that there is no gap on the entire circumference of the side surface of the upper base 6. This metal plate 22 is airtightly fixed to the lower side surface of the upper base 6 with bolts 20 or the like. The other end side of the metal plate 22 is inserted into the notch groove 18 by bending the metal plate and is urged by the elastic force of the metal plate 22 toward the smooth surface portion 12 of the lower base 4. ing.

  In general, many buildings are polygonal in plan, and in this case have corners.

  In the case of the example shown in FIG. 1B, the upper base 6 has four corners A on its periphery. One set of the metal plates 22 adjacent to each other at the corner A is shown in FIG.

  As shown in FIG. 2A, which is a partially enlarged plan view of the corner portion A, the upper metal plate 22a and the lower metal plate 22b that are close to each other at the corner portion A are the upper and lower sides of the stacked portion 22ab. It overlaps with.

  More specifically, as shown in FIG. 2 (A), the pair of metal plates 22a and 22b in the corner portion A overlap the side portions E22a and E22b with a predetermined width. Furthermore, one end of a rubber plate 36 is adhered to the side portion E22a of the metal plate 22a stacked on the upper side, as shown in FIG. The rubber plate 36 extends outward (in the direction of the lower metal plate 22b) and covers the metal plate 22b stacked on the lower side from the side portion E22a, and the stack of the upper metal plate 22a and the lower metal plate 22b. The portion 22ab is covered with a rubber plate 36. Thereby, the airtightness of the stacked portion 22ab of the upper metal plate 22a and the lower metal plate 22b is enhanced.

  The predetermined width between the side portions E22a and E22b of the metal plates 22a and 22b stacked on the upper side and the lower side is preferably a maximum width Wmax of 100 to 300 mm, and more preferably 150 to 250 mm.

  FIG. 3 is a partially enlarged plan view of the peripheral straight line portion B in FIG. The metal plates 22c and 22d that are adjacent to each other at the peripheral straight portion B are in contact with each other at the end portion 38 and do not overlap. A rubber plate (not shown) may be glued to the metal plates abutting against each other to cover the abutting portion 38 between the end portions of the metal plates 22c and 22d.

  Examples of the metal plate 22 include an iron plate, a copper plate, an aluminum plate, a stainless steel plate, and the like, but a stainless steel plate is preferable in terms of elasticity, strength, and corrosion resistance. As an example of the shape of the metal plate, in view of convenience of handling, the length of 500 to 4000 mm, the width of 120 to 280 mm, and the thickness of 0.1 to 0.8 mm are preferable, the length of 800 to 3000 mm, the width More preferably, the thickness is 150 to 250 mm and the thickness is 0.15 to 0.6 mm. In this example, 16 stainless steel plates 22 are inserted into the cutout grooves 18. As the material of the stainless steel plate, a springy stainless steel plate having high elasticity is preferable.

  The upper base 6 has at least 1, preferably 2 to 6 [5 in FIG. 1 (B)], a pressurized air supply pipe 24 that penetrates from the upper surface to the lower surface of the upper base 6. The inner diameter of the pressurized air supply pipe 24 is preferably 10 to 40 mm, and more preferably 15 to 30 mm.

  As shown in FIG. 1A, compressed air in an air tank 26 provided in the building 8 is injected into the pressurized air supply pipe 24 through a valve 28 when an earthquake occurs. The compressed air to be injected is fed into the air pressure chamber 30 surrounded by the lower base 4, the upper base 6 and the metal plate 22, and the building formed integrally with the upper base 6 by the pressure increase of the air pressure chamber 30. As shown in FIG. 4, 8 is levitated to form a levitation gap Y (gap Y between the lower base 4 and the upper base 6 when the building is levitated). The effect is demonstrated.

  The control system will be described. When an earthquake occurs, the accelerometer 32 provided in the building 8 senses the shaking of the earthquake and notifies the control unit 34. The control unit 34 generates a control signal for opening the valve 28 only during a strong earthquake exceeding a predetermined value. Thereby, the compressed air is sent into the air pressure chamber 30 through the valve 28 and the pressurized air supply pipe 24 as described above, and the building 8 rises. As a result, the seismic effect is exerted particularly on the main shock of the earthquake that comes after the lapse of the initial tremor duration of the earthquake.

The pressure in the air pressure chamber 30 depends on the total mass of the building 8, but usually ² to 10 kgf / cm ² is preferable in the case of one to three stories, and the number of stories in the case of four or more stories. It is preferable to apply additional pressure accordingly. In addition, although it is preferable to use this invention for a light wooden building, it is not restricted to this, It can apply also to a reinforced concrete building and a steel frame building.

  In the example of FIG. 1 (A) and FIG. 4, the air tank 26 is provided on the floor in the building 8. However, the air tank 26 is not limited to this, and depending on the ease of maintenance, good appearance, etc. You may prepare for.

  FIG. 5 is a front cross-sectional view showing the position correcting device 46 provided on the lower base and the upper base in the example of the air-seismic building before providing the balancer used in the present invention, and the periphery thereof. In FIG. 5, the building is in a state of being floated by compressed air.

  In FIG. 5, reference numeral 40 denotes an upper position fixing member formed in a cylindrical shape, and is attached through the upper base 6 with its axis aligned with the thickness direction of the upper base 6. A lid 48 is airtightly attached to the upper end of the upper position fixing member 40 by a bolt 49.

  Reference numeral 42 denotes a lower position fixing member which is formed in a bottomed cylindrical shape and is embedded in the lower base 4 with its upper surface exposed.

  The upper position fixing member 40 and the lower position fixing member 42 are arranged opposite to each other in the vertical direction, and a plurality of springs 44 are stretched between the upper position fixing member 40 and the lower position fixing member 42. Yes. The spring 44 is preferably stretched along the radial direction of the upper position fixing member 40 and the lower position fixing member 42.

The number of position correction devices 46 installed depends on the floor area (building area) of the building 8, but in the case of a normal building area of 20 to ²⁰⁰ m ² , 2 to 8 are preferable, and 2 to 5 are more preferable. When the floor area exceeds 200 m ² , it is preferable to add the number of position correction devices 46 according to the floor area. 10-30 are preferable and, as for the number of the springs 44 which connect the upper position fixing member 40 and the lower position fixing member 42, 12-20 are more preferable. The inner diameter of the upper position fixing member 40 and the inner diameter of the lower position fixing member 42 are both preferably 400 to 2000 mm, and more preferably 500 to 1200 mm.

  In FIG. 1B, in the cross section of the upper base 6, the cross section of the five pressurized air supply pipes 24 and the cross section of the four upper position fixing members 40 are visible, and 4 on the inner side of each upper position fixing member 40. The spring 44 of the book is visible.

  By having the above-described position correcting device 46 in the air-seismic building, the repairability of the positional deviation between the lower base 4 and the upper base 6 after the earthquake is calmed down.

  That is, in the position correction apparatus using the air bag as in Patent Document 4, if the air bag is crushed due to the shaking of the earthquake, the position shift occurs. In order to repair this misalignment, it is necessary to inject high-pressure air into the air bag, and the process and equipment become complicated.

  On the other hand, in an air-seismic building having the position correcting device 46, the spring 44 operates stably against earthquake shaking. In addition, the lower base 4 vibrates with a large amplitude with respect to the shaking of the earthquake, but the amplitude of the vibration with respect to the shaking of the earthquake is extremely small because the upper base 6 has floated. Further, due to the spring 44, the center of vibration of the lower base 4 and the center of vibration of the upper base 6 are unlikely to be misaligned even during an earthquake. For this reason, in the air-seismic building having the position correcting device 46, the process and facilities are not complicated, and the repairability of the positional deviation between the lower base 4 and the upper base 6 after the earthquake is calmed down.

  The lower position fixing member 42 is preferably a bottomed cylindrical shape. Thereby, attachment of the lower position fixing member 42 at the time of construction becomes easy. When the bottom position fixing member 42 has a bottomed cylindrical shape, the depth is preferably 50 to 300 mm, and more preferably 60 to 200 mm.

  FIG. 8 is a schematic view showing an example of the air-seismic building of the present invention, and is a cross-sectional plan view taken along line V-V in FIG. 9 (A).

  In FIG. 8, the cross section of the five pressurized air supply pipes 24 and the cross section of the upper position fixing member 40 of the four position correcting devices 46 can be seen in the cross section of the upper base 6, and inside each upper position fixing member 40. 4 springs 44 are visible. Furthermore, the cross section of the upper cylinder part 62 of the four balancers 50 is visible, and the cross section of the upper piston part 72 is visible inside each upper cylinder part 62. Below each upper piston portion 72, a cross section of the lower cylinder portion 66 is indicated by a broken line.

The number of balancers 50 installed depends on the floor area (building area) of the building 8, but in the case of a normal building area of 20 to ²⁰⁰ m ² , 4 to 10 are preferable. When the floor area exceeds 200 m ² , it is preferable to add the number of balancers 50 according to the floor area.

  FIG. 9 is a front cross-sectional view showing a balancer and its surroundings in an example of the air-seismic building of the present invention, and (A) is a state before the balancer and the surrounding upper base are lifted with respect to the lower base. (B) shows the state after rising.

  In FIG. 9, reference numeral 50 denotes a balancer that is attached so as to penetrate between the upper surface and the lower surface of the upper base 6. The balancer 50 includes a cylinder 52, a lid 54, a pressurized air supply pipe 56, a sliding disk 58, and a piston 60.

  The cylinder 52 includes an upper cylinder portion 62 having a large diameter, a lower cylinder portion 66 having a smaller diameter than the upper cylinder portion 62, and a shoulder formed from the inner periphery of the bottom portion of the upper cylinder portion 62 to the inner periphery of the top portion of the lower cylinder portion 66. The portion 64 is formed integrally with these axes aligned, and the shoulder portion 64 connects the upper cylinder portion 62 and the lower cylinder portion 66.

  The lid 54 airtightly closes the upper opening of the cylinder 52. In the example of FIG. 9, the lid 54 is fastened with a bolt 70 with a disc-shaped rubber sheet or packing 68 having a vent hole formed in the center between the lower surface on the peripheral side and the upper surface of the upper base 6. Airtightly blocked. A washer or the like may be interposed for tightening.

  The pressurized air supply pipe 56 is attached to the lid 54 and passes through the lid 54 to supply pressurized air into the cylinder 52. In the example of FIG. 9, the pressurized air is introduced into the pressurized air supply pipe 56 from the C direction and is supplied into the cylinder 52.

  The top portion of the upper cylinder portion 62 extends outward and upward, and this extension portion forms a flange portion 65. It is preferable that the top portion of the flange portion 65 is located at a position higher than the level of the top portion of the bolt 70.

  The sliding disk 58 is housed on the lower end side in the lower cylinder portion 66.

  The piston 60 is placed on the sliding disk 58 and accommodated in the cylinder 52, and has a large-diameter upper piston portion 72, a lower piston portion 76 having a smaller diameter than the upper piston portion 72, and the upper piston portion 72. The shoulder portion 74 extends from the outer periphery of the bottom portion to the outer periphery of the top portion of the lower piston portion 76, and the shoulder portion 74 connects the upper piston portion 72 and the lower piston portion 76.

  As shown in FIG. 10, the piston 60 is preferably made of concrete 84 whose outer periphery is covered with a resin 82. The thickness of the coating resin 82 is preferably 5 to 30 mm.

  At least one (two in the example of FIG. 9) O-rings 78 is attached to the peripheral surface of the upper piston portion 72, and the piston 60 slides in the vertical direction in the cylinder 52 by the O-rings 78. I can move.

  In the balancer 50 configured as described above, the sum of the vertical length L of the lower piston portion 76 and the thickness T of the sliding disk 58 is longer than the vertical length D of the lower cylinder portion 66, preferably 1 It is -35 mm long, more preferably 5-30 mm long.

  The vertical length P of the upper piston part 72 is shorter than the vertical length S of the upper cylinder part 62, preferably 1 to 50 mm shorter, more preferably 5 to 40 mm shorter.

  The sliding disk 58 is preferably a resin molded product in terms of slidability, elastic force, wear resistance, and corrosion resistance, and the resin is preferably a thermoplastic resin such as polyethylene or polypropylene.

  The coating resin 82 of the piston 60 is preferably a fiber reinforced resin molded product from the viewpoint of strength, elasticity, wear resistance, and corrosion resistance, and the resin is preferably a thermoplastic resin such as polyethylene or polypropylene.

  By having the above-described balancer 50 in the air-isolated building, the building can be lifted with a minimum inclination of the building when an earthquake occurs, and the balance of the building can be maintained.

  That is, in an air seismic building without a balancer used in the present invention (for example, in the case of FIGS. 1 and 4), if the load is uneven depending on the point of the building 8, it is pressurized at the point of the building where the load is applied. Even if pressurized air is supplied from the air supply pipe 24, the upper base 6 may slightly float with respect to the lower base 4.

  There is almost no gap between the lower base plate 4 and the upper base plate 6 in the vicinity of the point where it floats only a little, so that pressure resistance is high to supply pressurized air to the gap. Therefore, in order to eliminate the point where only a small amount of air rises, it is necessary to increase the pressure of the pressurized air from the pressurized air supply pipe 24. However, the pressure of the high-pressure pressurized air is also applied to the already floating point, and the imbalance in the rising of the building is further expanded.

  A balancer is adopted to solve this problem. In an air-seismic building having a balancer 50 (for example, in the case of FIGS. 8 and 9), pressurized air is supplied from the pressurized air supply pipe 24 to the air pressure chamber 30 at the time of the occurrence of the earthquake, and the pressurized air of the balancer 50 is used. Pressurized air is supplied from the supply pipe 56 to the air pressure chamber 80.

  When pressurized air is supplied to the air pressure chamber 80, a downward stress is applied to the upper surface of the piston 60, and the piston 60 moves downward. As a result, the tilted building is pushed up, and the balance of the building is restored.

  The area of the upper surface of the piston 60 is larger than the area of the lower surface of the sliding disk 58. Therefore, the stress applied to the upper surface of the piston 60 is amplified by these area ratios. Even if the pressures of the pressurized air applied to the air pressure chamber 30 and the air pressure chamber 80 are the same, the stress that pushes down the piston 60 is amplified as described above, so that the building reliably restores the balance.

  Therefore, the upper surface of the piston 60 is made wider than the lower surface of the sliding disk 58. The area magnification R (the area of the upper surface of the piston 60 / the area of the lower surface of the sliding disk 58) is preferably 1.1 to 5 times, more preferably 1.2 to 2.5 times.

2 Air Seismic Building 4 Lower Base 6 Upper Base 8 Building 10 Ground 12, 12b Smooth Surface 13, 13b Covering Layer 14 Building Bottom Member 16, 20, 49, 70 Bolt 18 Notch Groove A Bottom of Upper Base Corner part at the periphery B Straight line part at the periphery of the lower surface of the upper base plate 22, 22a, 22b, 22c, 22d Metal plate 22ab Stacked portion of the metal plate E22a, E22b Metal plate side Wmax Metal stacked on the upper side and the lower side Maximum width between side portions of plates 24, 56 Pressurized air supply pipe 26 Air tank 28 Valve 30, 80 Air pressure chamber Y Floating gap formed by upper substrate floating from lower substrate 32 Accelerometer 34 Controller 36 Rubber Plate 38 End portions of metal plates adjacent to each other 40 Upper position fixing member 42 Lower position fixing member 44 Spring 46 Position correcting device 48 Upper position fixing Material cover 50 Balancer 52 Cylinder 54 Balancer cover 58 Sliding disk 60 Piston 62 Upper cylinder part 64 Cylinder shoulder part 65 Cylinder top part 66 Lower cylinder part 68 Disc-shaped rubber sheet or packing with a vent hole in the center 72 Upper piston portion 74 Piston shoulder portion 76 Lower piston portion 78 O-ring 82 Coating resin on the outer periphery of the concrete piston 84 Concrete with the outer periphery of the piston coated with resin C Pressurized air is supplied to the pressurized air supply pipe of the balancer Arrow indicating the direction of introduction D Vertical length of the lower cylinder part L Vertical length of the lower piston part P Vertical length of the upper piston part S Vertical length of the upper cylinder part T Sliding disk thickness

Claims (5)

A lower base formed by forming a smooth surface portion of a predetermined width along at least the upper surface periphery;
An upper base placed over the upper surface of the lower base;
The upper surface of the upper base consists of a building formed integrally with the upper base,
The upper base is
A notch groove formed along the periphery of the lower surface;
A metal plate whose one end is airtightly fixed to the lower side surface of the upper base over the entire side surface of the upper base, and the other end is attached by the elastic force of the metal plate toward the smooth surface portion of the lower base. A plurality of metal plates that are energized and inserted into the notch grooves;
At least one pressurized air supply pipe passing through the upper base from its upper surface to its lower surface;
A balancer penetrating between the upper surface and the lower surface of the upper base and attached to the upper base, wherein the balancer is
These shafts have a large-diameter upper cylinder part, a lower cylinder part having a smaller diameter than the upper cylinder part, and a shoulder part formed from the bottom inner periphery of the upper cylinder part to the top inner periphery of the lower cylinder part. A cylinder that is formed integrally with the same heart,
A lid for hermetically closing the upper opening of the cylinder;
A pressurized air supply pipe that is attached to the lid, passes through the lid, and supplies pressurized air into the cylinder;
A sliding disk stored on the lower end side in the lower cylinder part;
A piston placed on the sliding disk and housed in a cylinder, wherein the piston comprises a large-diameter upper piston portion, a lower piston portion having a smaller diameter than the upper piston portion, and the upper piston portion. A shoulder portion formed from the bottom outer periphery to the top outer periphery of the lower piston portion, and an O-ring is mounted on the peripheral surface of the upper piston portion, and the piston moves up and down in the cylinder by the O-ring. A balancer that can slide in an airtight direction,
Air seismic building with   The lower surface of the upper base has at least one corner on the periphery thereof, and at least one pair of the metal plates adjacent to each other at the corner overlaps the sides with a predetermined width and the upper side. By attaching a rubber plate that extends outward while covering the metal plate stacked on the lower side from the side portion to the side of the metal plate, the metal plate stacked on the upper side and the lower side The air-seismic building according to claim 1, wherein a stacking portion is covered with the rubber plate.   A cylindrical upper position fixing member which is attached through the upper surface and the lower surface of the upper base, the top opening of which is detachably crowned and hermetically sealed, and the upper position fixing member A cylindrical lower position fixing member that is attached to the lower base so that the upper surface is exposed, and a plurality of the upper position fixing member and the lower position fixing member that are connected to each other along their radial direction. The air-isolated building according to claim 1, further comprising a position correcting device including a spring.   The air-seismic building according to claim 3, wherein the lower position fixing member has a bottomed cylindrical shape.   The air-seismic building according to claim 1, wherein the smooth surface portion is formed by laminating a coating layer along the upper surface periphery of the lower base.

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