JPH06136973A - Large stadium having ascending and descending floor - Google Patents

Abstract

PURPOSE:To hold various matches or entertainments simultaneously or at different times while using a single large stadium. CONSTITUTION:In a large stadium 10 constituted in such a way that the first floor stands 16 are formed in a part or the whole part around the ground floor 12, and the second floor stands 17 are formed above the first floor stands 16 in the part or the whole part around the ground floor, and an outer wall 11 is formed outside of the first and the second floor stands, an ascending and descending floor 14 is arranged on the ground floor 12, and the ascending and descending floor 14 is raised or lowered at desired times by a floor moving device 15 arranged under it. When the ascending and descending floor 14 is lowered, matches or entertainments held on the ascending and descending floor 14 are made viewable from the first and the second floor stands 16 and 17, and when the ascending and descending floor 14 is raised, the matches or the entertainments held on the ascending and descending floor 14 are made viewable from the second floor stands 17, and the matches or the entertainments held on the ground floor 12 are made viewable from the first floor stands 16. Thereby, the large stadium whose construction cost runs up can be used effectively, so that the profitability can be heightened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large stadium provided with a lifting floor, and in particular, a lifting floor is provided on the ground floor, and when the lifting floor is raised, separate competitions or events on the lifting floor and the ground floor are provided. Related to large stadiums.

[0002]

2. Description of the Related Art In a conventional large-scale stadium 1 with a roof, for example, as shown in FIG.
There is a bleacher 4 on the second floor above the bleacher 3 on the first floor, the bleachers 3 and 4 are surrounded by an outer wall 5, and the basement 2, bleachers 3 and 4 and the upper side of the outer wall 5 are Some are covered with a fixed or movable large roof 6.

[0003]

The large stadium 1 with a roof described above can play a game such as baseball on the ground floor 2.
Alternatively, an event such as an exhibition or a concert can be held on the ground floor 2. However, while playing a game such as baseball on the ground floor 2, it is not possible to hold other competitions or events such as exhibitions and concerts on the ground floor 2. Also, the conventional large stadium 1
Has a drawback that the ground floor 2 is too wide and there are too many seats 3 and 4 when playing a competition on the ground floor 2 such as volleyball, basketball, or tennis, which does not require a high space. Even when performing an event that does not require a high and large space such as an exhibition or a concert, the ground floor 2 and the seats 3 and 4 are too wide, the space on the ground floor 2 is too high, and desired lighting and sound are provided. There is a drawback that it is difficult to obtain the effect. The problem to be solved by the present invention is to provide a large stadium provided with a lifting floor that does not have the drawbacks of the conventional large stadium, in other words, using one large stadium for various competitions. It is an object of the present invention to provide a large stadium equipped with a floor for raising and lowering events which can be performed at the same time or at different times.

[0004]

The present invention adopts the following configuration as a means for solving the above problems. According to the configuration of the present invention, the bleachers on the first floor are formed on a part or all of the circumference of the ground floor, and the bleachers on the second floor are located above the seats on the first floor of part or all of the ground floor. In a large stadium where the outer walls are formed outside the grandstands on the first and second floors, a floor moving device is provided above the ground floor and the floor moving device is provided below the floor. It is possible to move up and down when desired, and when the floor is lowered, the competitions or events on the floor can be seen from the bleachers on the 1st and 2nd floors. An up-and-down floor characterized in that the competitions or events being held can be seen from the bleachers on the second floor, and the competitions or events being held on the ground floor can be seen from the bleachers on the first floor. Located in a large stadium equipped. In a preferred embodiment of the present invention, a bleacher is provided on the lift floor. The seats provided on the lift floor may be fixed or mobile. When a fixed bleacher is installed on the lifting floor, it will be installed in part or all of the surrounding area on the lifting floor. The shape of the ground floor in plan view may be, for example, a rectangular shape, a circular shape, an oval shape, or the like, but it is appropriately determined according to the type of competition or entertainment on the ground floor and on the raised / lowered floor. The ground floor may have its upper surface substantially flat, or it may be divided into a high portion whose upper surface is substantially flat and a lower portion whose upper surface is substantially flat. There are two ways to install the lift floor: one is the lift floor with the same shape as the ground floor above the ground floor, and the other is the lift floor with the same shape as the lower floor part above the lower floor. . In the latter case, the upper surface of the raised / lowered floor when descending should be flush with the upper surface of the higher part of the ground floor.

The lifting floor is supported by, for example, truss beams,
Support truss beams with columns. The floor lifting device for lifting the lifting floor may have any structure as long as it has a function of moving the lifting floor in the vertical direction. For example, a hydraulic floor lifting device that vertically moves the lifting floor using a hydraulic cylinder or the like, and an electric floor lifting device that vertically moves the lifting floor using an electric motor or the like can be used. As the floor elevating device, for example, a pillar is guided by guide means extending in the vertical direction, drive wheels (that is, drive rollers or drive chain wheels) are installed in the vicinity of the guide means, and ropes are wound around the drive wheels or chains are installed. Hanging, connecting one end of the rope or chain to the lower part of the pillar, suspending a weight at the other end, and installing a truss beam etc. above the pillar to support the lifting floor,
Use a lifting balance, beams, columns, etc. that balance the weight and weight. If you want to install the lift floor above the lower part of the ground floor,
A movable bleaching seat that can be raised and lowered can be provided so as to be movable on a high part of the ground floor or on a lifted floor when descending. In this case, since it is necessary to position the movable bleachers at a high part of the ground floor when the floor is elevated, the shape of the movable bleachers in plan view should be substantially the same as the shape of the high ground part. Is good. The movable bleachers are constructed so that they can be moved up and down and moved horizontally.

In a preferred embodiment of the present invention, the ground floor has two crescent-shaped high portions located on both sides thereof in plan view and a drum-shaped low portion in plan view located between these high portions. In the lower part of the ground floor, an elevating floor having a shape substantially corresponding to the shape in plan view is provided, and the elevating floor can be moved up and down at a desired time by a floor moving device provided below the movable floor. Has a shape that substantially corresponds to the shape of the higher part of the ground floor in plan view, and is configured to be able to move up and down.A movable bleaching table is provided so that it can be moved on the high part of the ground floor or on the lifting floor when descending. When descending, arrange two movable spectators in a lowered state in a substantially V-shape on the elevated floor and the high floor so that baseballs can be played on the elevated floor and the high floor. , Baseball etc. held there 1
It is made visible from the bleachers on the first floor, the bleachers on the second floor, and the movable bleachers. When the elevator floor rises, the movable bleachers should be raised above a high part of the ground floor, and a football It is possible to play competitions, and to play sports such as volleyball, basketball, etc. or exhibitions, concerts, etc. on the lower part of the ground floor, the competitions that are held on the raised and lowered floors can be seen on the second floor and movable. Make it visible from the bleachers and the competitions or events on the low ground floor from the bleachers on the first floor. In a preferred embodiment of the present invention, the ground floor, the grandstand on the first floor,
Fixed or movable (opening and closing) above the bleachers and outer walls on the first floor
A large type roof is arranged, and the large roof is supported by an outer wall or the like.

[0007]

EXAMPLE A large stadium with a roof 10 of Example 1 will be described with reference to FIGS. Large covered stadium 10
Is an outer wall 11, a ground floor 12, an inner wall 13, an elevating floor 14,
Floor lifting device 15, 1st floor bleachers 16, 2nd floor bleachers 1
7, a movable viewing device 18, a large roof 19 and the like. The outer side wall 11 is formed in a circular shape in a plan view, and a circular inner side wall 13 is formed inside the outer side wall 11 so that a circular ground floor 12 is formed at an eccentric position inside the outer side wall 11.
Then, the first-seat seat 16 is formed below the annular space formed between the circular outer wall 11 and the circular inner wall 13 and eccentric in plan view, and above the first-seat seat 15 The bleachers 17 on the second floor will be formed. Ground floor 12, bleachers 16 on the first floor,
A large roof 1 that covers the bleachers 17 on the second floor and the outer wall 11
9 is supported by the outer wall 11 and the like. The large roof 19 may be fixed or movable. The ground floor 12 has two crescent-shaped portions 12A in which the chain line L1 of FIG. 1 is a string and a drum-shaped portion (shape in which the drum is seen from the side) 12B which is lowered between the two parallel chain lines L1. It consists of Lifting floor 14
Is located in the lower part 12B of the basement 12,
A plurality of vertically moving columns 14a and a large number of truss beams 14b fixed to their upper ends support the columns 14a.
The a is moved up and down by the floor lifting device 15. The ground floor 12B of the lifting floor 14 has a drum shape.
Use the same shape as That is, two parallel lines parallel to the chain line L1 and a little apart from the chain line L1 and the circular inner wall 13
The drum shape is formed by two arc lines slightly separated from the inner peripheral surface of the.

As shown in FIG. 3, the floor elevating / lowering device 15 is housed in a housing portion 15a formed by punching a portion 12B of the ground floor 12, and is spaced inside the outer wall 15a ₁ of the housing portion 15a. Two guide walls 15b extending in parallel in the vertical direction are provided, a steel frame pillar 14a is arranged between the two guide walls 15b, and drive wheels (drive rollers) 15c are provided above the guide walls 15b. This drive wheel 15c is used for the lifting floor 14
The motor or the like can be positively rotated in the normal direction or the reverse direction when moving the vertical direction. Weights 15d are arranged in the vertically extending spaces between the outer wall 15a ₁ of the accommodating portion 15a and the guide body 15b, and a rope 15e is wound around each drive wheel 15c.
It is connected to the upper part of the guide piece 14a ₁ fixed to the lower end of a, and the weight 15d is hung at the other end to lift the floor 14, the beam 14b,
The weight of the pillar 14a and the like and the weight 15d are balanced, and the drive wheel 15c can be easily rotated by a motor or the like. 15f of FIG. 3 is a member for guiding the pillar 14a,
5 g is a buffer. When the lifting floor 14 is lowered, the upper surface of the lifting floor 14 is flush with the upper surfaces of the two crescent-shaped high portions 12A of the ground floor 12, and when the lifting floor 14 is raised, the upper surface of the lifting floor 14 is Is located slightly lower than the lowest part of the grandstand on the 2nd floor,
The floor lifting device 15 is manufactured. The mobile viewing device 18
A movable bleaching seat 18a having substantially the same shape as the crescent shape of the high portion 12A of the ground floor 12 in a plan view is provided, and the bleaching seat 18a is supported by a plurality of telescopic columns 18b or the like, and is moved horizontally or telescopic. A device 18c for vertically moving the bleachers 18 is provided below the pillar 18b.

Next, a large stadium 10 with a roof according to the first embodiment.
Explain how to use. (1) Collect a crowd of about the capacity of the large stadium 10,
When performing a professional baseball or the like on the upper side of the elevating floor 14, as shown in FIG. 2, the elevating floor 14 is lowered by the action of the floor elevating device 15, and the upper surface of the elevating floor 14 is raised to a high portion 12A of the ground floor 12.
Be flush with the top surface of. Then, two movable viewing devices 1
8 using their device 18c, V shown in FIG.
The movable bleachers 18a are installed in the device 18 in a character-shaped position.
Use c to lower to the position shown in FIG. Lifting floor 14
A baseball or the like is performed on the floor, and the spectator views the baseball from the bleachers 16 on the first floor, the bleachers 17 on the second floor, and the two moving bleachers 18a. (2) A movable viewing device 1 having a crescent-shaped bleaching seat 18a when a crowd of about 60% of the capacity of a large stadium is gathered and a game such as soccer is performed above the lifting floor 14.
As shown in FIG. 4, the device 8 is moved from the substantially V-shaped arrangement state shown by the chain line L2 to the parallel arrangement state shown by the solid line.
Use 8c to move. Then, as shown in FIG. 5, the device 18c is used to raise the movable bleachers 18a so that the height of the bleachers 18a is about the height of the lower part of the bleachers 17 on the second floor. Next, the floor raising / lowering device 15 is operated to raise the raising / lowering floor 14, and the upper surface of the raising / lowering floor 14 is positioned at a height slightly lower than the height of the lower portions of the two movable bleachers 18a. Then, a game such as soccer is performed on the lifting floor 14, and the spectators are on the second floor 16
Also, watch soccer or the like from the two movable bleachers 18a. (3) In the state of use of (2) above, a space S1 having a considerable height is formed between the lifted floor 14 and the lower portion 12B of the ground floor 12. So this low part 12
On the basement 12 of B, a competition that does not require a high space such as volleyball, basketball, tennis, and badminton is performed, and the competition is watched from the bleachers 16 on the first floor. Alternatively, an event such as an exhibition, a concert, a theater, etc. is performed with or without dividing the space S1 on the ground floor 12 of this portion 12B. Events such as concerts and plays can be seen from the bleachers 16 on the first floor.

A large stadium 10 with a roof according to the second embodiment is shown in FIGS. 6 and 7, and has an outer wall 11, a ground floor 12, and an inner wall 1.
3, lifting floor 14, floor lifting device 15, 1st floor bleachers 16,
It is composed of the second-floor seat 17 and the large roof 19. Outer wall 1
1 is formed in a rectangular shape in a plan view, and the inside of the outer wall 11 is formed in a rectangular shape so that a rectangular ground floor 12 is formed inside the outer wall 11 with its sides parallel to the outer wall 11. Wall 13
To form. The first-floor viewing seat 15 is formed below the rectangular annular space formed in a plan view between the rectangular outer wall 11 and the rectangular inner wall 13, and the upper side of the first-floor viewing seat 15 is formed. The bleachers 16 on the second floor will be formed. The base 12, the grandstand 15 on the first floor, the grandstand 16 on the second floor, and the large roof 19 covering the upper side of the outer wall 11 are supported by the outer wall 11 and the like. The large roof 19 may be fixed or movable. The lifting floor 14 is supported by a plurality of vertically moving columns 14a and a large number of beams 14b fixed to the upper ends of the columns 14a.
It is designed to move up and down by 5. The shape of the elevating floor 14 in plan view is a rectangle formed by two pairs of parallel lines that are slightly apart from the respective sides of the rectangular inner wall 13 and are parallel to these sides. The floor elevating device 15 is the same as that shown in FIG. When the lifting floor 14 is in the lowered state, the upper surface thereof is located at the position indicated by the chain double-dashed line L3 in FIG. 7, and when the lifting floor 14 is in the raised state, the upper surface of the lifting floor 14 is 2
The floor elevating device 15 is manufactured so that it is located at a height slightly lower than the lowest part of the grandstand 16 on the floor.

Next, a large stadium 10 with a roof according to the second embodiment.
Explain how to use. (1) Collect a crowd of about the capacity of the large stadium 10,
When playing a game such as soccer or rugby above the lifting floor 14, the floor lifting device 15 lowers the upper surface of the lifting floor 14 to the position indicated by the chain double-dashed line L3 in FIG.
Soccer, rugby, etc. are played on the above, and the spectator watches the spectator seats 16 on the first floor and the seats 17 on the second floor. (2) When a crowd of about half the capacity of a large stadium is gathered and a game such as soccer, rugby or the like is performed above the lifting floor 14, the floor lifting device 15 is operated as shown in FIG. , The lifting floor 14 is lifted, and the upper surface of the lifting floor 14 is raised to 2
It is located slightly lower than the height of the lower part of the grandstand 17 on the floor. Then, a game such as soccer or rugby is played on the lifting floor 14, and the spectator watches the game from the bleachers 17 on the second floor. (3) In the use state of the above (2), a space S1 having a considerable height is formed between the lifted floor 14 and the ground 12. Using the basement 12 and the space S1 above it, play a game that does not require a high space such as volleyball, basketball, and tennis, and see it from the grandstand 16 on the first floor. Alternatively, an event such as an exhibition, a concert, or a theater is held on the ground floor 12 with or without partitioning the space S1 on the ground floor 12. Events such as concerts and plays can be seen from the grandstand 16 on the first floor.

A large stadium 10 with a roof according to the third embodiment is shown in FIG. 8, and has an outer wall 11, a ground floor 12, an inner wall 13, an elevating floor 14, a floor elevating device 15, and a grandstand 16, 2 on the first floor. It is composed of a grandstand 17 on the floor, a large roof 19, etc., and a grandstand 20 is provided on the lifting floor 14. The seat 20 is the floor 14
It may be fixedly provided at the location or may be installed so as to be movable. When the pedestrian seat 20 is fixedly provided, it is provided, for example, in a part or all of the peripheral portion on the elevating floor 14. When it is installed so as to be movable, it can be installed anywhere on the lifting floor 14. Further, although not shown in FIG. 8, an auxiliary viewing seat may be provided on the ground floor 12. This auxiliary viewing seat is installed, for example, in a recess formed in the ground floor 12 so that it can be lifted above the surface of the ground floor 12 when the lift floor 14 is lifted. The usage of the large stadium 10 with a roof of the third embodiment is similar to that of the second embodiment, and thus the description thereof will be omitted. The large stadium 10 with a roof of Examples 1 to 3 is provided with a vibration control and vibration control device, and a sound absorbing material or the like is provided inside a truss beam or the like that supports the lifting floor 14. Lifting floor 1
A movable partition system for effectively utilizing the space S1 formed between the lifting floor 14 and the ground floor 12 formed when the vehicle moves up.
Various systems such as individual speaker systems and individual air-conditioning systems will be installed inside truss beams or under the ground floor. In the covered large-scale stadium 10 of Examples 1 to 3, between the bleachers on the first and second floors and the lifting floor, and between the bleachers and moving spectators on the first and second floors, the first and second floors. The gap between the bleachers and the bleachers on the raised / lowered floor should be filled by appropriate means. For example, the gap is filled with a fall prevention screen.

[0013]

The present invention has the following effects (a) to (f) by having the structure described in the section of the claims. (B) According to claim 1, when the number of people accommodated in a large stadium is desired to be played in a competition or an event, the competition or the event is performed on the lowered floor in the lowered state, and the event is performed on the first floor. Be visible from the bleachers, the bleachers on the second floor, etc.
When gathering about 50% of the capacity of a large stadium for a competition or an event, perform the event or event on the raised floor in a raised state so that you can see it from the bleachers on the second floor. In addition, if you want to gather 50% or less of the capacity of people to play a competition or an event, perform the competition or an event on the ground floor below the raised floor in the raised state, and then put it on the ground floor. Since it can be seen from the etc., it is possible to use one large stadium to hold many kinds of competitions and events that attract many people at the same time or at different times. Therefore, it is possible to effectively use the large stadium, which requires high construction costs. (B) When the bleachers are provided on the raised / lowered floor as described in claim 2, it is possible to increase the degree of freedom in arranging the bleachers, and it is possible to easily obtain the bleachers for easy viewing of competitions and entertainments. (C) When the bleachers provided on the lifting floor are movable as described in claim 3, the flexibility of arranging the bleachers is further increased, and the bleachers can be arranged according to the type of competition or entertainment.
You can make it easier to see competitions and events from the bleachers. (D) As described in claim 4, a high portion and a low portion are provided on the ground floor, and an elevating floor is provided on the upper side of the lower portion of the ground floor, so that a movable spectator seat that can be raised or lowered is placed on or above the high portion of the ground floor. If it is movably installed on the floor, it will be possible to change the layout of the stadium and the bleachers by changing the installation position of the movable bleachers. In addition, since the weight of the spectators on the movable spectators does not apply to the lifting floor, the beams, the columns and the floor lifting device when the lifting floor is raised, it is easy to manufacture the lifting floor, the beams, the columns and the floor lifting device. (E) According to the fifth aspect, by arranging the two crescent-shaped movable bleachers in a substantially V-shape, the same layout of diamonds and bleachers as in the existing baseball field can be easily obtained. (F) According to the sixth aspect, it is possible to effectively use a large stadium with a roof, which requires a high construction cost, and to increase its profitability.

[Brief description of drawings]

FIG. 1 is a plan view of a state when a baseball is played in a large stadium with a roof according to the first embodiment, taken along the line AA of FIG. 2 and viewed in the direction of the arrow.

FIG. 2 is a front view of FIG. 1 taken along the line BB.

FIG. 3 is a front view in which a floor elevating device used in a large stadium with a roof according to the first embodiment is cut vertically.

FIG. 4 is a plan view showing a state in which a lift floor of a large stadium with a roof according to the first embodiment is lifted, which is taken along the line AA in FIG.

5 is a front view of FIG. 4 taken along the same line as line BB in FIG.

FIG. 6 is a plan view of the elevated stadium in Example 2 with a raised floor raised in elevation, which is taken along the line CC in FIG. 7 and viewed in the direction of the arrow.

FIG. 7 is a front view of FIG. 6 taken along the line DD.

FIG. 8 is a front view of a state in which a lifted floor of a large stadium with a roof according to the third embodiment is lowered along the same line as the line D-D in FIG. 6.

FIG. 9 is a plan view of a conventional large stadium with a roof taken along the line BB of FIG.

[Explanation of symbols]

 10 large stadium with roof 11 outer wall 12 base 12A crescent shaped base 12B drum-shaped base 13 inner side wall 14 lift floor 14a pillar 14b beam 15 floor lifting device 16 1st floor spectator 17 2nd floor spectator 18 movable viewing device 18a movable viewing seat 19 large roof 20 viewing seat L1 chain line L2 chain line L3 two-dot chain line

Claims (6)

[Claims] 1. A grandstand on the first floor is formed on a part or the whole of the ground floor, and a grandstand on the second floor is formed above a part or all of the ground floor of the ground floor. In a large stadium where outer walls are formed outside the bleachers on the 1st and 2nd floors, an elevating floor is provided above the ground floor, and this elevating floor is provided by the floor moving device provided below the floor. It is possible to move up and down from time to time, so that when the floor is lowered, the competition or event on the floor can be seen from the bleachers on the first and second floors. Equipped with an elevator floor, which allows the competition or entertainment being held to be seen from the bleachers on the second floor and the competition or entertainment being held on the ground floor to be seen from the bleachers on the first floor. Large stadium. 2. A first-floor bleaching seat is formed on a part or all of the ground floor, and a second-floor bleaching seat is formed above a part or all of the ground floor's first-floor bleaching seats. In a large stadium where outer walls are formed outside the bleachers on the 1st and 2nd floors, a lift floor is provided above the ground floor, a bleacher seat is provided on this lift floor, and this lift floor is placed below it. The floor moving device provided on the side allows the user to move up and down at a desired time, and when the floor is lowered, a competition or event that is held in a portion of the floor that does not have a seat is a seat on the first floor and a seat on the second floor. And the bleachers on the lift floor, and when the lift is raised, you can see the competitions or events on the part of the lift floor without the bleachers from the bleachers on the second floor and the bleachers on the lift floor. And the competitions and events held on the ground floor 1
A large stadium equipped with a lifting floor, which can be seen from the grandstand on the first floor. 3. A large stadium equipped with a lifting floor according to claim 2, wherein a movable bleacher is provided on the lifting floor. 4. A bleacher on the first floor is formed on a part or all of the ground floor and a bleacher on the second floor is formed above a part or all of the ground floor on the ground floor. In a large stadium where outer walls are formed outside the seats on the 1st and 2nd floors, a high part and a low part are provided on the ground floor, and an elevating floor is provided above the low part of the ground floor. The floor moving device provided on the lower side of the floor allows the floor to be moved up and down at a desired time, and a movable bleaching table that can be raised and lowered is provided so as to be movable on a high part of the ground floor or on the floor when it descends. In some cases, the movable bleachers in the lowered state are on the upper and lower floors and on the higher part of the ground floor, and competitions or events held on the upper and lower floors can be seen on the first floor, the second floor, and the movable seats. A movable bleaching seat that is visible from the bleachers and is in a raised position when the floor is raised. On the upper part of the ground floor, make the competitions or events held on the raised / lowered floor visible from the bleachers and movable spectators on the second floor, and at the same time, watch the competitions / events held on the ground floor on the first floor. A large stadium equipped with a floor that can be seen from above. 5. A first-floor bleaching seat is formed on a part or all of the circumference of the ground floor having a circular or elliptical shape in a plan view, and above a part or all of the first-floor bleachers of the ground floor. In a large stadium where the second-floor bleachers are formed and the outer walls are formed outside the first- and second-floor bleachers, there are two crescent-shaped high ground floors located on either side of the ground floor. It is divided into a portion and a low portion having a drum shape in a plan view located between these high portions, and an elevating floor having a shape substantially corresponding to the shape in a plan view is provided in the lower portion of the ground floor, and this elevating floor is The floor moving device provided on the lower side allows the elevator to move up and down at a desired time, and the movable bleachers have a shape that substantially matches the shape of the upper part of the ground floor in plan view and can be moved up and down. It is movably provided on a high part of the floor or on the lifting floor when descending, and when descending the lifting floor, In order that baseball etc. can be performed on the floor where the floor is descending and on the high floor, two movable spectators in a lowered state are arranged in a substantially V shape on the lifting floor and the portion where the floor is high, and the baseball is performed there. Etc. can be seen from the bleachers on the first floor, the bleachers on the second floor, and the movable bleachers. When the lift floor rises, the movable bleachers must be raised on a higher part of the ground floor and To be able to play sports such as soccer, to be able to play sports such as volleyball, basketball, etc. or exhibitions, concerts, etc. on the lower part of the ground floor. And a large stadium equipped with a lifting floor, which is made visible from the movable bleachers and which allows sports or events to be performed on the lower part of the ground floor to be seen from the bleachers on the first floor. . 6. A fixed or movable large roof is arranged above the ground floor, the grandstand on the first floor, the grandstand on the second floor and the outer wall, and the large roof is supported by the outer wall and the like. A large stadium provided with a lifting floor according to any one of claims 1 to 5.