JP2024059035A - Framework structure - Google Patents

Abstract

To suppress decline of recirculation efficiency of conditioned air while placing a boundary girder along the boundary between an air conditioning machine chamber and an air-conditioned chamber.SOLUTION: A framework structure includes an air-conditioned chamber 20, an air conditioning machine chamber 40 which is next to the air-conditioned chamber 20 and in which an air conditioning machine 42 that supplies conditioned air to the air-conditioned chamber 20 is installed, a ceiling slab 30 across the air-conditioned chamber 20 and the air-conditioning machine chamber 40, and a boundary girder 52, which is provided along the boundary between the air-conditioned chamber 20 and the air-conditioning machine chamber 40 and below and separated from the ceiling slab 30, and forms a reflux channel 54 in the space below the surface of the ceiling slab 30 that circulates the conditioned air from the air-conditioned chamber 20 to the air-conditioning machine chamber 40.SELECTED DRAWING: Figure 2

Description

The present invention relates to a structural frame.

Air conditioning systems that condition server rooms and the like are known (see, for example, Patent Document 1).

In addition, in a column-beam joint structure in which a beam is joined to both the left and right sides of a column, a column-beam joint structure in which steps are provided on both sides of the beam is known (see, for example, Patent Documents 2 and 3).

JP 2011-174286 A JP 2005-126973 A JP 2018-162645 A

There is a known air conditioning system that supplies conditioned air from an air conditioning room in which an air conditioning machine is installed to an adjacent room that needs to be air-conditioned, such as a server room. In this air conditioning system, conditioned air is supplied to the room that needs to be air-conditioned from the air conditioning machine in the air conditioning machine room. The conditioned air supplied to the room that needs to be air-conditioned cools the servers, and then flows back along the underside of the ceiling slab into the air conditioning machine room.

Here, a boundary girder supporting the ceiling slab may be placed at the boundary between the air conditioning machine room and the room to be air-conditioned. In this case, the boundary girder blocks the conditioned air returning from the room to be air-conditioned to the air conditioning machine room, reducing the efficiency of the return of the conditioned air.

One possible solution to this problem is to create an opening in the boundary girder to allow conditioned air to pass through. However, in this case, it may be difficult to ensure a sufficient opening area, and it may be necessary to reinforce the opening in the boundary girder.

Taking the above facts into consideration, the present invention aims to suppress a decrease in the efficiency of the return of conditioned air while placing a boundary girder along the boundary between the air conditioning machine room and the room to be air conditioned.

The frame structure described in claim 1 comprises: a room to be air-conditioned; an air conditioning machine room adjacent to the room to be air-conditioned and in which an air conditioning machine that supplies air-conditioned air to the room to be air-conditioned is installed; a ceiling slab that spans the room to be air-conditioned and the air conditioning machine room; and a boundary girder that is disposed along the boundary between the room to be air-conditioned and the air conditioning machine room and is disposed below and away from the underside of the ceiling slab, and that forms a return flow path between the underside of the ceiling slab and the boundary girder to return the conditioned air from the room to be air-conditioned to the air conditioning machine room.

According to the frame structure of claim 1, the air conditioning machine room is adjacent to the room to be air-conditioned. An air conditioning machine that supplies conditioned air to the room to be air-conditioned is installed in this air conditioning machine room.

The boundary girder is also positioned along the boundary between the air-conditioned room and the air-conditioning machine room. This boundary girder is positioned below and away from the underside of the ceiling slab that spans between the air-conditioned room and the air-conditioning machine room, and forms a return flow path between the underside of the ceiling slab. This allows conditioned air to be returned from the air-conditioned room to the air-conditioning machine room via the return flow path.

Therefore, in the present invention, it is possible to suppress a decrease in the efficiency of the return of conditioned air while placing a boundary girder along the boundary between the air conditioning machine room and the room to be air conditioned.

The frame structure described in claim 2 is the frame structure described in claim 1, and further includes a small beam arranged in the air-conditioned room along a direction intersecting the boundary beam and supporting the ceiling slab.

According to the frame structure of claim 2, the small beam is arranged in the room to be air-conditioned and supports the ceiling slab. This small beam is arranged in a direction intersecting with the boundary girder. This allows the conditioned air in the room to flow along the small beam to the air conditioning machine room. Therefore, in this invention, the return efficiency of the conditioned air can be improved compared to when the small beam is arranged along the material axis direction of the boundary girder.

The frame structure described in claim 3 is the frame structure described in claim 2, and further includes an opposing girder that is arranged on the side of the boundary girder that faces the boundary girder in a plan view and supports the ceiling slab, and a beam that rises from the boundary girder and supports the ceiling slab, and the small beam is erected between the opposing girder and the beam.

According to the frame structure of claim 3, an opposing girder is arranged on the side of the boundary girder that faces the room to be air-conditioned. The opposing girder faces the boundary girder in a plan view and supports the ceiling slab. In other words, the opposing girder is at a higher beam level than the boundary girder.

Meanwhile, columns supporting the ceiling slab are raised from the boundary girder. A small beam is erected between this opposing girder and the column. This allows the span of the small beam to be shortened while ensuring a return flow path between the underside of the ceiling slab and the boundary girder. Furthermore, the seismic force acting on the ceiling slab can be transmitted to the boundary girder via the small beam and column. This improves seismic performance.

The frame structure described in claim 4 is the frame structure described in claim 2 or claim 3, and further includes a cross beam that is arranged in the air-conditioned room along a direction intersecting the boundary beam and supports the ceiling slab, and the ceiling slab is a one-way deck slab erected on the small beam and the cross beam.

According to the frame structure of claim 4, cross girders that support the ceiling slab are arranged in the air-conditioned room. The cross girders are arranged in a direction that intersects with the boundary girders.

Here, the ceiling slab is a one-way deck slab that is erected on small beams and cross beams. This makes it easier to lay the deck plate of the ceiling slab, improving the workability of the ceiling slab.

The frame structure described in claim 5 is the frame structure described in claim 1, in which the column arrangement of the air-conditioned room is set according to the arrangement of the servers to be installed in the air-conditioned room.

According to the frame structure of claim 5, the column arrangement of the air-conditioned room is set according to the arrangement of the servers to be installed in the air-conditioned room. This makes it possible to improve the air-conditioning efficiency of the air-conditioned room and the return efficiency of the conditioned air.

As described above, according to the present invention, it is possible to suppress a decrease in the efficiency of the return of conditioned air while placing a boundary girder along the boundary between the air conditioning machine room and the room to be air-conditioned.

1 is a plan view showing a specific floor of a structure to which a frame structure according to one embodiment is applied. This is a cross-sectional view taken along line 2-2 of Figure 1. This is a cross-sectional view taken along line 3-3 in Figure 1. FIG. 4 is a perspective view of the column shown in FIG. 3 viewed from below.

Below, one embodiment will be described with reference to the drawings.

Figure 1 shows a specific floor of a structure 10 to which the framework structure according to this embodiment is applied. As an example, the structure 10 is a data center consisting of multiple floors. On the specific floor of this structure 10, adjacent air-conditioned rooms 20 and air-conditioning machine rooms 40 are provided.

In addition, the arrow X shown in FIG. 1 indicates the adjacent direction of the air-conditioned room 20 and the air-conditioning machine room 40. Also, the arrow Y indicates the horizontal direction perpendicular to the adjacent direction of the air-conditioned room 20 and the air-conditioning machine room 40.

(Air-conditioned rooms)
The air-conditioned room 20 is a server room (data hall). A plurality of servers (information processing devices) 22 are installed in this air-conditioned room 20. The plurality of servers 22 form a row (hereinafter referred to as a "server row R") in the direction of the arrow X, and are also arranged in a plurality of rows in the direction of the arrow Y. In addition, between the server rows R adjacent to each other in the direction of the arrow Y, an air supply passage (cold aisle) 24 and an exhaust passage (hot aisle) 26 are alternately formed.

As shown by arrow F, conditioned air is supplied to the air supply passage 24 from the air conditioning machine room 40, which will be described later. The conditioned air supplied to the air supply passage 24 passes through the server row R and is exhausted to the exhaust passage 26, as shown by arrow F. At this time, the servers 22 are cooled by the conditioned air.

As shown in FIG. 2, the exhaust passage 26 is partitioned by a capping 28. The conditioned air exhausted into the exhaust passage 26 is returned to the air conditioning machine room 40 through the return chamber 36 from the exhaust port 34 formed in the ceiling material 32, as shown by the arrow F. The capping 28 may be provided as needed, and may be omitted as appropriate.

The return chamber 36 is formed between the ceiling slab 30 of the air-conditioned room 20 and the air-conditioning machine room 40 and the ceiling material 32 arranged below the ceiling slab 30. In addition, the return chamber 36 is provided with a cross beam 80, a first minor beam 82, a cross beam 90, and a second minor beam 94, which will be described later.

(Air conditioning machine room)
A plurality of air conditioning machines 42 are installed in the air conditioning machine room 40. The air conditioning machines 42 generate conditioned air to be supplied to the air conditioned room 20. Specifically, the air conditioning machines 42 take in the conditioned air returned from the air conditioned room 20, adjust the temperature, etc., and then send the air to the air conditioned room 20 via an air blowing chamber 44, as indicated by arrow F.

As shown in FIG. 2, the air-blowing chamber 44 is provided on the side of the air-conditioning machine room 40 facing the room 20 to be air-conditioned. The air-blowing chamber 44 has a pair of partition walls 44A, 44B that face each other in the direction of the arrow X. Of the pair of partition walls 44A, 44B, the lower part of the partition wall 44A on the air-conditioning machine 42 side is connected to the air outlet 42A of the air-conditioning machine 42.

Of the pair of partition walls 44A, 44B, the partition wall 44B on the side of the air-conditioned room 20 has a plurality of air outlets 46 formed therein. The air outlets 46 are formed, for example, in the middle part of the height direction of the partition wall 44B, and are formed from one end side to the other end side in the width direction of the partition wall 44B (the direction of the arrow Y in FIG. 1). The air outlets 46 are formed, for example, from a punching metal or the like that constitutes the middle part of the partition wall 44B.

Here, as shown by the arrow F, the conditioned air supplied from the air conditioning machine 42 to the lower part of the air blowing chamber 44 is diffused in the air blowing chamber 44 and then supplied to the air-conditioned room 20 from the air blowing port 46 in the middle part of the air blowing chamber 44. As described above, this conditioned air is supplied to the air supply passage 24 formed between the adjacent server rows R.

The air-blowing chamber 44 may be provided in the air-conditioned room 20 instead of in the air-conditioning machine room 40, or may be provided across the air-conditioning machine room 40 and the air-conditioned room 20. The air-blowing chamber 44 may be provided as needed, and may be omitted as appropriate.

(Framework structure)
Next, the frame structure according to this embodiment will be described.

As shown in FIG. 1, the frame structure includes a pair of boundary columns 50, boundary girders 52, a number of beam columns 60, a pair of opposing columns 70, opposing girders 72, a pair of cross girders 80, a number of first girders 82, a pair of cross girders 90, and a number of second girders 94.

The pair of boundary columns 50 are arranged at a predetermined distance from each other at the boundary between the air-conditioned room 20 and the air-conditioning machine room 40. As an example, the pair of boundary columns 50 are steel columns made of square steel pipes. A boundary girder 52 is installed on the pair of boundary columns 50.

The boundary girder 52 is arranged along the boundary between the air-conditioned room 20 and the air-conditioning machine room 40, and is erected on a pair of boundary columns 50. The boundary girder 52 and the pair of boundary columns 50 form a frame (boundary frame) that runs along the direction of the arrow Y.

As shown in Figures 3 and 4, the boundary girder 52 is, as an example, a steel beam formed from an H-shaped steel. This boundary girder 52 has an upper flange portion 52A and a lower flange portion 52B that face each other in the vertical direction, and a web portion 52C that connects the upper flange portion 52A and the lower flange portion 52B.

The boundary girder 52 is positioned downward and away from the underside of the ceiling slab 30 so as not to block the conditioned air flowing through the return chamber 36. In other words, the boundary girder 52 is positioned at a lower beam level than the opposing girder 72 (see FIG. 1), which will be described later. As a result, a return flow passage 54 through which the conditioned air flows is formed between the upper surface (top end) of the upper flange portion 52A of the boundary girder 52 and the underside of the ceiling slab 30. The boundary girder 52 is also positioned in the ventilation chamber 44 (see FIG. 2).

In addition, multiple beam columns 60 are raised from the top surface of the upper flange portion 52A of the boundary girder 52. The multiple beam columns 60 are so-called hill-standing columns. These beam columns 60 are, for example, steel columns made of square steel pipes, and are arranged at intervals in the material axis direction (arrow Y direction) of the boundary girder 52.

As shown in FIG. 3, the lower end of the beam column 60 is joined by welding or the like to the upper surface of the upper flange portion 52A of the boundary girder 52. Meanwhile, a top plate (not shown) is provided at the upper end of the beam column 60. The top plate is joined to the upper end of the beam column 60 by welding or the like.

A number of studs (headed studs) 62 are provided on the upper surface of the top plate. The studs 62 extend upward from the top plate and are embedded in the ceiling slab 30. The beam columns 60 and the ceiling slab 30 are joined via these studs 62 in a manner that allows the transmission of shear forces.

The first and second beams 82 and 94 (see FIG. 1), which will be described later, are joined to the beam 60. The number of beams 60 can be changed as appropriate depending on the number of first and second beams 82 and 94.

The boundary column 50 is provided with a support plate 56 that supports the ceiling slab 30. A number of studs 58 are provided on the upper surface of the support plate 56. The number of studs 58 extend upward from the support plate 56 and are embedded in the ceiling slab 30. The boundary column 50 and the ceiling slab 30 are joined via these studs 58 in a manner that allows the transmission of shear forces.

As shown in FIG. 1, a pair of opposing columns (first opposing columns) 70 are arranged on the side of the air-conditioned room 20 relative to the multiple boundary columns 50. The pair of opposing columns 70 are arranged with a gap in the direction of arrow Y, and face each of the multiple boundary columns 50 in the direction of arrow X. As an example, the pair of opposing columns 70 are steel columns formed from square steel pipes. Additionally, opposing girders 72 are erected on the pair of opposing columns 70.

The opposing girder 72 is disposed on the side of the boundary girder 52 facing the air-conditioned room 20, and faces the boundary girder 52 in the direction of arrow X in plan view. The opposing girder 72 is also disposed along the material axis direction (arrow Y direction) of the boundary girder 52. The opposing girder 72 and a pair of opposing columns 70 form a frame (opposing frame) that runs along the direction of arrow Y.

As an example, the opposing girder 72 is a steel beam formed from H-shaped steel. This opposing girder 72 is arranged along the underside of the ceiling slab 30 of the air-conditioned room 20, and supports the ceiling slab 30. In other words, the opposing girder 72 is at a higher beam level than the boundary girder 52. In addition, a plurality of first minor beams 82, which will be described later, are joined to the opposing girder 72.

A cross girder 80 is installed between the opposing boundary columns 50 and opposing columns 70. The cross girder 80 is arranged in the air-conditioned room 20. The cross girder 80 is also arranged along a direction (arrow X direction) that intersects (orthogonal in this embodiment) with the boundary girder 52 and opposing girder 72, and is installed between the opposing boundary columns 50 and opposing columns 70. The cross girder 80, boundary girder 52, and opposing girder 72 form a frame (cross frame) that runs along the arrow X direction.

A cross beam 90 is joined to the boundary column 50. The cross beam 90 is disposed on the opposite side of the boundary column 50 from the cross beam 80. In other words, the cross beam 90 is disposed in the air conditioning machine room 40. The cross beam 90 is also disposed along a direction (arrow X direction) that intersects (orthogonal in this embodiment) with the boundary beam 52 and the opposing beam 72. As an example, the cross beam 90 is a protruding beam that protrudes from the boundary column 50 toward the air conditioning machine room 40, and is supported in a cantilevered state by the boundary column 50.

An opposing beam 92 is installed at the tip of the pair of cross beams 90 in the protruding direction. The opposing beam 92 is arranged on the air conditioning machine room 40 side of the boundary girder 52, and faces the boundary girder 52 in the direction of arrow X in a plan view. The opposing beam 92 is also arranged along the material axis direction of the boundary girder 52. A second small beam 94, which will be described later, is joined to this opposing beam 92.

The cross beam 90 is not limited to a spring beam, but may be a girder (second cross beam) that is installed between the boundary column 50 and another column (second opposing column). In this case, the opposing beam 92 becomes an opposing girder (second opposing beam). In other words, the cross beam 90 is a concept that includes a spring beam and a main beam. Also, the opposing beam 92 is a concept that includes a small beam and a main beam.

First minor beams 82 are respectively installed on the multiple beam columns 60 and the opposing beams 72 that are raised from the boundary girder 52. The multiple first minor beams 82 are arranged in the air-conditioned room 20. These first minor beams 82 are arranged in a direction (arrow X direction) that intersects (orthogonal in this embodiment) with the boundary girder 52 and the opposing beams 72, and are arranged at intervals in the arrow Y direction.

Second small beams 94 are respectively installed between the multiple beam columns 60 and the opposing beams 92. Each second small beam 94 is arranged on the opposite side of the beam column 60 from the first small beam 82. In other words, the multiple second small beams 94 are arranged in the air conditioning machine room 40. These second small beams 94 are arranged along a direction (arrow X direction) that intersects (orthogonal in this embodiment) with the boundary beam 52 and the opposing beam 92, and are arranged at intervals in the arrow Y direction.

Here, the column division of the air-conditioned room 20 is set according to the arrangement of the servers 22. Specifically, the positions (column division) of the multiple boundary columns 50 and opposing columns 70 are set so that the cross beams 80 are positioned away from the pair of server rows R that form the exhaust passage 26. In addition, the multiple first minor beams 82 are positioned away from the exhaust passage 26. As a result, conditioned air is exhausted from the exhaust passage 26 between the adjacent cross beams 80 and first minor beams 82, or between the adjacent first minor beams 82.

In this embodiment, as described above, the boundary column 50 and the opposing column 70 are steel columns (steel frame construction) formed from square steel pipes. However, the boundary column 50 and the opposing column 70 are not limited to steel frame construction, and may be reinforced concrete construction, steel reinforced concrete construction, etc.

In addition, in this embodiment, the boundary girder 52, the opposing girder 72, the cross girder 80, the first beam 82, the cross beam 90, the opposing beam 92, and the second beam 94 are steel beams (steel construction) made of H-shaped steel. However, the boundary girder 52, the opposing girder 72, the cross girder 80, the first beam 82, the cross beam 90, the opposing beam 92, and the second beam 94 are not limited to steel construction, and may be reinforced concrete construction, steel reinforced concrete construction, etc.

(ceiling slab)
The ceiling slab 30 is made of reinforced concrete and extends between the air-conditioned room 20 and the air-conditioning machine room 40. The ceiling slab 30 of the air-conditioned room 20 is supported by opposing girders 72, a pair of crossing girders 80, and a plurality of first minor beams 82. In other words, the opposing girders 72, the pair of crossing girders 80, and the plurality of first minor beams 82 are arranged along the underside of the ceiling slab 30 of the air-conditioned room 20, and support the ceiling slab 30.

On the other hand, the ceiling slab 30 of the air conditioning machine room 40 is supported by a pair of cross beams 90, opposing beams 92, and multiple second small beams 94. In other words, the pair of cross beams 90, opposing beams 92, and multiple second small beams 94 are arranged along the underside of the ceiling slab 30 of the air conditioning machine room 40 and support the ceiling slab 30.

The ceiling slab 30 is a one-way deck slab. Specifically, the ceiling slab 30 of the air-conditioned room 20 is formed by pouring concrete onto a deck plate 30A that is installed between adjacent first small beams 82 and cross beams 80, or between adjacent first small beams 82.

Similarly, the ceiling slab 30 of the air conditioning machine room 40 is formed by pouring concrete onto adjacent second joists 94 and cross beams 90, or onto a deck plate (not shown) that is erected between adjacent second joists 94.

(Action)
Next, the operation of this embodiment will be described.

As shown in FIG. 1, in this embodiment, a pair of boundary columns 50 and boundary girders 52 are arranged at the boundary between the air-conditioned room 20 and the air-conditioning machine room 40. This makes it easy to separate the air-conditioned room 20 from the air-conditioning machine room 40.

Here, as a comparative example, if the boundary girder is placed along the underside of the ceiling slab 30, the boundary girder blocks the conditioned air flowing through the return chamber 36, reducing the efficiency of the return of the conditioned air from the conditioned room 20 to the air conditioning machine room 40.

One possible solution to this problem is to create an opening in the web of the boundary girder to allow conditioned air to pass through. However, in this case, it may be difficult to ensure a sufficient opening area, and it may be necessary to reinforce the opening in the web of the boundary girder.

In contrast, in this embodiment, as shown in FIG. 2, the boundary girder 52 is positioned below and away from the underside of the ceiling slab 30. This forms a return flow path 54 between the underside of the ceiling slab 30 and the upper surface of the boundary girder 52. The conditioned air is returned from the air-conditioned room 20 to the air-conditioning machine room 40 via this return flow path 54.

Therefore, in this embodiment, the boundary girders 52 can be arranged along the boundary between the air-conditioned room 20 and the air-conditioning machine room 40, while suppressing a decrease in the return efficiency of the conditioned air. In addition, by arranging the boundary girders 52 in the air-blowing chamber 44, it is possible to effectively utilize the space.

In addition, a first minor beam 82 and a second minor beam 94 are arranged in the return chamber 36. These first minor beam 82 and second minor beam 94 are arranged along a direction intersecting with the boundary beam 52 (the direction of the arrow X). This allows the conditioned air in the return chamber 36 to flow along the first minor beam 82 and second minor beam 94 to the air conditioning machine room 40.

Therefore, in this embodiment, the efficiency of the return of conditioned air can be improved compared to when the first minor beam 82 and the second minor beam 94 are arranged along the material axis direction (arrow Y direction) of the boundary major beam 52.

In addition, an opposing girder 72 is arranged on the side of the boundary girder 52 facing the air-conditioned room 20. The opposing girder 72 is arranged along the underside of the ceiling slab 30 and supports the ceiling slab 30. In other words, the boundary girder 52 is at a higher beam level than the boundary girder 52.

Similarly, an opposing beam 92 is arranged on the air conditioning machine room 40 side of the boundary girder 52. The opposing beam 92 is arranged along the underside of the ceiling slab 30 and supports the ceiling slab 30. In other words, the opposing beam 92 is at a higher beam level than the boundary girder 52.

On the other hand, the boundary girder 52 is provided with a beam 60 that supports the ceiling slab 30. By erecting a first small beam 82 between this beam 60 and the opposing girder 72, the span of the first small beam 82 can be shortened while securing a return flow path 54 between the ceiling slab 30 and the boundary girder 52.

Similarly, by erecting a second minor beam 94 between the beam column 60 and the boundary girder 52, the span of the second minor beam 94 can be shortened while still ensuring a return flow path 54 between the ceiling slab 30 and the boundary girder 52.

In addition, by supporting the ceiling slab 30 with the beams 60 provided on the boundary beams 52, the seismic force acting on the ceiling slab 30 can be transmitted to the boundary beams 52 via the first beam 82, the second beam 94, and the beams 60. This improves the seismic performance of the structure 10.

Furthermore, in this embodiment, the ceiling slab 30 of the air-conditioned room 20 is a one-way deck slab erected between adjacent cross beams 80 and first beams 82, or between adjacent first beams 82. Similarly, the ceiling slab 30 of the air-conditioning machine room 40 is a one-way deck slab erected between adjacent cross beams 90 and second beams 94, or between adjacent second beams 94.

This makes it easier to lay the deck plate 30A (see Figure 1) of the ceiling slab 30, improving the workability of the ceiling slab 30.

The column arrangement of the air-conditioned room 20 is set according to the server row R to be installed in the air-conditioned room 20. Furthermore, the first joists 82 are arranged in a position outside the exhaust passage 26. This allows conditioned air to flow from the exhaust passage 26 between adjacent cross girders 80 and first joists 82, or between adjacent first joists 82. This increases the air-conditioning efficiency of the air-conditioned room 20 and the return efficiency of the conditioned air.

(Modification)
Next, a modification of the above embodiment will be described.

In the above embodiment, the first small beam 82 is installed between the opposing main beam 72 and the beam column 60. However, for example, the beam column 60 may be omitted, and the first small beam 82 may be installed between the opposing main beam 72 and the opposing beam 92. In this case, the first small beam 82 passes through the return flow path 54.

In the above embodiment, conditioned air is supplied from the air conditioning machine room 40 to the air-conditioned room 20. However, for example, the air conditioning machine room 40 may have a double floor, and conditioned air may be supplied from the air conditioning machine room 40 to the air conditioning machine room 40 through a chamber in the double floor.

In the above embodiment, the air-conditioned room 20 is a server room. However, the air-conditioned room 20 is not limited to a server room, and may be, for example, a clean room for manufacturing electronic components or a treatment room in a medical facility.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and one embodiment and various modified examples may be used in appropriate combination, and the present invention may of course be embodied in various forms without departing from the spirit of the present invention.

20 Air-conditioned room 22 Server 30 Ceiling slab 40 Air-conditioning machine room 42 Air-conditioning machine 52 Boundary girder 54 Return flow passage 60 Beam 72 Opposing girder 80 Cross girder 82 First beam (beam)

Claims (5)

The air-conditioned room;
an air conditioning machine room adjacent to the air conditioned room and in which an air conditioning machine for supplying conditioned air to the air conditioned room is installed;
A ceiling slab extending between the air-conditioned room and the air-conditioning machine room;
a boundary girder that is disposed along a boundary between the air-conditioned room and the air-conditioning machine room and is disposed below and spaced apart from an underside of the ceiling slab, and that forms, between the underside of the ceiling slab and the boundary girder, a return flow passage for returning conditioned air from the air-conditioned room to the air-conditioning machine room;
A structural frame comprising: The air-conditioned room is provided with a small beam arranged along a direction intersecting the boundary beam and supporting the ceiling slab,
The frame structure according to claim 1. An opposing girder that is arranged on the air-conditioned room side with respect to the boundary girder, faces the boundary girder in a plan view, and supports the ceiling slab;
A beam column extending from the boundary girder and supporting the ceiling slab;
Equipped with
The small beam is installed between the opposing large beam and the beam column.
The frame structure according to claim 2. The air-conditioned room is provided with a cross girder arranged along a direction intersecting the boundary girder and supporting the ceiling slab,
The ceiling slab is a one-way deck slab installed on the small beam and the cross beam.
The frame structure according to claim 2 or claim 3. The column division of the air-conditioned room is set according to the arrangement of the servers to be installed in the air-conditioned room.
The frame structure according to claim 1.