JP7164080B2 - Skylight structure and skylight construction method - Google Patents

Description

The present invention relates to a skylight structure and a skylight construction method.

Patent Literature 1 listed below discloses a structure of a top light. In this skylight structure, the window frame material of the skylight is attached via a grooved receiving member placed on the upper surface of the steel frame beam. Since the packing material is provided between the grooved receiving member and the window frame material, watertightness can be improved when the skylight is provided.

Japanese Patent Application Laid-Open No. 2008-303615

By the way, in order to improve the fire resistance performance, it is desirable to wrap the steel frame beams with the fire-resistant covering material without any gaps. As a result, the buckling of the steel frame beam due to heat transfer to the steel frame beam can be suppressed, and the fire resistance performance can be improved. However, in the configuration disclosed in Patent Document 1, since the window frame material of the skylight is attached to the upper surface of the steel beam through the grooved receiving member, it is necessary to wind the fireproof coating material on the upper surface of the steel beam. can't For this reason, there is a possibility that the upper surface of the steel frame beam may be buckled due to heat transfer from the grooved receiving member. Therefore, the prior art described above has room for improvement in this respect.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a skylight structure and a skylight construction method that facilitate construction and improve fire resistance performance.

A skylight structure according to a first aspect includes a steel beam that constitutes a part of the frame of a building, and is supported by the steel beam and is made of a refractory material. A roof panel having a communicating roof opening, a fireproof coating material covering the steel beam from the indoor side, and a plate-like member formed to be larger than the roof opening of the roof panel when viewed in the vertical direction. In addition, a plate opening is placed from the outdoor side at a position corresponding to the roof opening of the roof panel, penetrates through the position corresponding to the roof opening in the thickness direction, and has a window member. and a base plate material on which is formed.

In the skylight structure according to a second aspect, in the invention according to the first aspect, a frame that fits inside the roof opening of the roof panel is attached to the base plate from the indoor side.

A skylight structure according to a third aspect includes a steel beam that constitutes a part of the frame of a building, and is supported by the steel beam and is made of a refractory material. A roof panel having a communicating roof opening, a fireproof coating material covering the steel beam from the indoor side, and a frame-like member that fits within the roof opening of the roof panel and is attached with a window member. a frame body, a frame mounting wall section, and a roof mounting wall section, the frame mounting wall section being mounted on the outer frame of the frame body, and the roof mounting wall section having at least the and a frame mounting bracket that is placed and fixed from the outdoor side on a portion of the roof surface material outside the roof opening.

A skylight structure according to a fourth aspect is the invention according to the second or third aspect, wherein the frame body is made of channel steel, and the roof surface material has the An opening edge member is provided with the outer surface of the web facing the inside of the roof opening.

A top light construction method according to a fifth aspect is the invention according to any one of the first to fourth aspects, wherein the steel beam is made of H-shaped steel in which the thickness direction of the web is substantially horizontal. A part of the top surface of the upper flange of the steel frame beam supports the roof panel, and the rest of the top surface of the upper flange is covered with the fireproof coating.

A skylight construction method according to a sixth aspect includes a steel beam that constitutes a part of the frame of a building; and a fireproof coating material for covering the steel beam from the indoor side, which is formed in a plate shape and formed larger than the roof opening of the roof panel when viewed in a vertical direction. and a plate opening that is placed from the outdoor side at a position corresponding to the roof opening of the roof panel material, penetrates through the position corresponding to the roof opening in the thickness direction, and has a window member provided. applied to a top light structure having a base plate material having a part formed thereon, and a frame body that fits in the roof opening of the roof surface material and is attached to the base plate material from the indoor side, and the base plate material is attached in advance. A first step of joining the frame, a second step of inserting the frame into the roof opening of the roof panel placed on the steel beam at the construction site, and a second step of inserting the frame into the roof opening a third step of fixing a portion outside the roof opening of the base plate placed on the roof panel to the roof panel by inserting it into the roof panel.

A skylight construction method according to a seventh aspect includes a steel beam that constitutes a part of the frame of a building; a roof panel having a roof opening that communicates with a fireproof coating material that covers the steel beam from the indoor side; a frame, a frame mounting wall, and a roof mounting wall, wherein the frame mounting wall is mounted on the outer frame of the frame, and the roof mounting wall is at least and a frame mounting bracket mounted and fixed from the outdoor side on a portion of the roof surface member outside the roof opening, wherein the frame mounting bracket and the frame are mounted in advance. a second step of inserting the frame into the roof opening of the roof panel placed on the steel beam at the construction site; and inserting the frame into the roof opening a third step of fixing a portion of the frame mounting bracket placed on the roof surface member corresponding to the outside of the roof opening in the roof mounting wall portion to the roof surface member by inserting the bracket into the roof surface member; , top light construction method.

According to a first aspect, a skylight structure has a steel beam, a roof panel, a refractory cladding, and a furring board. Steel beams form part of the frame of the building. The roof surface material is made of fireproof material and supported by steel beams, and is partially provided with a roof opening that communicates the inside and outside of the building. The fireproof coating material covers the steel beams from the indoor side. The base board is formed in a plate shape and formed to be larger than the roof opening of the roof panel when viewed in the vertical direction, and is placed from the outdoor side at a position corresponding to the roof opening of the roof panel. . In addition, a plate opening is formed in the base plate material at a position corresponding to the roof opening and is penetrated in the thickness direction and has a window member attached thereto. In other words, the skylight is provided not by steel beams, but by base plate materials placed on the roof surface material, and the steel beams are provided by the roof surface material made of fireproof material, the fireproof coating material from the indoor side, Because it is surrounded by , it is possible to suppress the transfer of heat to the steel beams in the event of a fire.

According to the second aspect, a frame is provided on the indoor side of the base board, and the frame is configured to fit within the roof opening of the roof panel. Therefore, it is possible to improve the flexural rigidity of the base plate while suppressing the amount of protrusion of the base plate from the roof panel. As a result, deformation of the base plate material can be suppressed.

According to a third aspect, a skylight structure includes a steel beam, a roof panel, a fire-resistant cladding, a frame, and a frame mounting bracket. Steel beams form part of the frame of the building. The roof surface material is made of fireproof material and supported by steel beams, and is partially provided with a roof opening that communicates the inside and outside of the building. The fireproof coating material covers the steel beams from the indoor side. The frame body is formed in a frame-like shape that fits within the roof opening of the roof panel, and has a window member attached thereto. The frame mounting bracket is formed including a frame mounting wall portion and a roof mounting wall portion, of which the frame mounting wall portion is mounted to the outer frame of the frame. On the other hand, the roof mounting wall portion is mounted and fixed to at least a portion of the roof surface material outside the roof opening portion from the outdoor side. Therefore, the frame is fixed to the roof panel via the frame mounting bracket. In other words, the skylight is provided by a frame fixed to the roof surface material instead of the steel beam, and the steel beam is provided by the roof surface material made of fireproof material and the fireproof coating material from the indoor side. Because it is surrounded, it is possible to suppress the transfer of heat to the steel beams in the event of a fire.

According to a fourth aspect, the frame is provided with an opening edge member made of channel steel. The outer surface of the web of the opening edge member faces the inside of the roof opening when viewed in the perpendicular direction of the roof panel. Therefore, when attaching the interior material to the roof opening, the web of the opening edge member can be used as a substrate for attaching the interior material. In other words, a base material for separately providing an interior material inside the skylight is not required. Thereby, cost can be reduced.

According to the fifth aspect, the steel beams are made of H-section steel, and the thickness direction of the web of the H-section steel is arranged in a substantially horizontal direction. In addition, the steel frame beam supports the roof panel on a portion of the upper surface of the upper flange, and the remaining portion of the upper surface of the upper flange is covered with a fireproof covering material. Therefore, when the edge of the roof opening of the roof panel is supported by a steel beam, the part where the roof panel is not placed is covered with a fireproof coating material, so the heat to the steel beam in the event of a fire can suppress the transmission of Thereby, fireproof performance can be improved more.

According to the sixth aspect, in the first step, the frame body is joined to the indoor side surface of the base plate material, and in the second step, the roof opening in the roof surface material placed on the steel beam at the construction site A frame is inserted into the part. In other words, there is no need to connect the base plate and the frame on the building site. In addition, by inserting the frame into the roof opening, the base plate can be placed on the roof panel at the same time. In other words, the base plate can be placed on the roof panel using the frame as positioning. Then, in a third step, the portion of the base plate material outside the roof opening is fixed to the roof surface material. That is, the frame can be fixed to the roof surface material via the base plate material. Therefore, it is not necessary to fix the frame and the base plate separately. As a result, the construction period at the building site can be shortened.

According to the seventh aspect, in the first step, the frame body mounting bracket is coupled to the frame body, and in the second step, the roof surface material placed on the steel beam at the construction site is installed in the roof opening. A frame is inserted. Therefore, the roof mounting wall portion of the frame mounting bracket mounted on the frame is mounted on the roof panel. Then, in the third step, a portion of the roof mounting wall portion of the frame mounting bracket placed on the roof surface material, corresponding to the outside of the roof opening, is fixed to the roof surface material. In other words, there is no need to join the frame body and the frame body mounting brackets at the building site, and the frame body to be housed in the roof opening is fixed via the frame body mounting brackets substantially perpendicular to the surface of the roof panel. Since work can be performed, workability can be improved. As a result, the construction period at the building site can be shortened.

INDUSTRIAL APPLICABILITY As described above, the skylight structure and skylight construction method according to the present invention have the excellent effect of facilitating construction and improving fire resistance performance.

1 is a schematic perspective view showing a building having a skylight structure according to a first embodiment; FIG. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1; FIG. 3 is an enlarged cross-sectional view showing an enlarged Z portion of FIG. 2; FIG. 2 is a cross-sectional view taken along line BB of FIG. 1; FIG. 2 is an exploded perspective view showing the essential parts of the top light structure according to the first embodiment; (A) is a plan view showing a state in which the frame and frame mounting bracket of the top light structure according to the second embodiment are viewed in the direction perpendicular to the surface of the roof panel, and (B) is C of (A). It is a cross-sectional view showing a state cut along the -C line. FIG. 5 is a cross-sectional view corresponding to FIG. 4 showing the main part of the top light structure according to the second embodiment;

(First embodiment)
An embodiment of a top light structure according to the present invention will be described below with reference to FIGS. 1 to 5. FIG.

(overall structure)
As shown in FIG. 1, a building 10 having a skylight structure 11 has a living room section 12 provided on a foundation (not shown) and a roof section 14 provided above the living room section 12 in the vertical direction of the building. there is The living room section 12 has a structure in which an outer wall panel 16 is attached from the outside of the building to a framework formed in a substantially box shape by steel beams 13 (see FIG. 2) and columns (not shown). In the following description, the beam direction of the building is called the X direction, the gable direction of the building is called the Y direction, and the vertical direction (height direction) is called the Z direction. The X, Y and Z directions are orthogonal to each other. The X direction and the Y direction are examples of horizontal directions intersecting the vertical direction.

(roof configuration)
The roof portion 14 is a so-called cut roof in which a portion of a flat roof is formed into a shed roof shape, and has a flat roof portion 15 and a cut roof portion 17 . The cut roof section 17 is provided with a skylight (skylight) 18, and as shown in FIG. .

The roof structure frame 20 includes a cut roof girder beam 24 and cut roof beams 26 and 28 as steel beams, cut roof columns 30 and 32 (see FIG. 2), and a cut roof intermediate beam 36. there is The cut roof girder beams 24 extend along the X direction of the building 10 on the upper side in the Z direction and the lower side in the Z direction of the cut roof portion 17, and as shown in FIG. The beam 24 is made of H-shaped steel. Each of the cut roof girder beams 24 is arranged such that the thickness direction of the web 24A is substantially horizontal.

The cut roof girder 24 provided below the cut roof section 17 in the Z direction is attached to the upper part of the cut roof column 30 attached to the steel beam 13 of the living room section 12 on the outside of the building. On the other hand, the cut roof girder 24 provided on the upper side of the cut roof section 17 in the Z direction is attached to the upper part of the cut roof column 32 attached to the steel beam 13 of the living room section 12 inside the building.

As shown in FIG. 1, a plurality of cut roof beams 26 are provided, and cut roof girder beams 24 provided below the cut roof portion 17 in the Z direction and cut roof beams 24 provided above the cut roof portion 17 in the Z direction. It extends so as to connect with the roof girder beam 24, and each cut roof beam 26 is provided so as to be spaced apart from each other in the X direction. Specifically, the cut roof beam 26 is made of H-shaped steel, and is arranged so that the thickness direction of the web is substantially horizontal. 17 is connected to a cut roof girder 24 provided on the lower side in the Z direction of the cut roof portion 17, and the other end in the longitudinal direction is connected to a cut roof girder 24 provided on the upper side of the cut roof portion 17 in the Z direction. In other words, the cut roof beam 26 extends in a state of being inclined upward in the Z direction toward the inside of the building.

The cut roof beam 28 basically has the same structure as the cut roof beam 26, is provided at a position corresponding to the skylight 18 in the cut roof portion 17, and has a substantially middle portion cut away in the longitudinal direction. It is characterized by points. That is, as shown in FIG. 2, the cut roof beam 28, like the adjacent cut roof beam 26, is made of H-section steel and is oriented so that the thickness direction of the web 28A is substantially horizontal. It extends while being inclined upward in the Z direction as it goes inward. In addition, a portion corresponding to the skylight 18 is notched in the cut-roof beam 28 at a substantially intermediate portion in the longitudinal direction, and is connected to the cut-roof girder beam 24 provided on the lower side of the cut-roof portion 17 in the Z direction. and a portion coupled to the cut roof girder 24 provided on the upper side of the cut roof portion 17 in the Z direction.

The cut roof beams 26 and 28 are connected to each other by a plurality of intermediate cut roof beams 36 as steel beams. The cut roof intermediate beams 36 are made of H-shaped steel extending along the X direction of the building 10, and the thickness direction of the web 36A is substantially the same as the longitudinal direction of the cut roof beams 26, 28. placed in the same direction. A pair of cut roof intermediate beams 36 are provided with the top light 18 interposed therebetween, and the upper surface of the upper flange 36B is substantially the same as the upper surface of the upper flanges 26B (see FIG. 1) and 28B of the cut roof beams 26 and 28. placed on the surface.

(Roof surface)
The roof surface portion 22 is provided on the roof structural frame 20 and has an ALC panel 38 as a roof surface material, crosspieces 40 , sheathing boards 42 , and roof materials 44 . The ALC panel 38 is made of plate-shaped lightweight cellular concrete. That is, the ALC panel 38 is made of fireproof material. This ALC panel 38 is mounted and fixed on the upper surfaces of the upper flanges 26B, 28B, 36B of the cut roof beams 26, 28 and the intermediate cut roof beam 36 over the entire range of the roof surface portion 22. As shown in FIG. A roof opening 38A penetrating in the plate thickness direction is formed at a portion of the ALC panel 38 corresponding to the top light 18 (see FIG. 5).

The crosspieces 40 are formed in a prism shape, and are placed on the ALC panel 38 along the X direction and the Y direction in a plan view of the building, and are spaced apart from each other. At a position corresponding to the skylight 18 on the roof surface portion 22, a base board 46, which will be described later, is placed (see FIGS. 3 and 4). is not provided.

The sheathing board 42 is made of plywood and placed on the plurality of crosspieces 40 over the entire range of the roof surface portion 22 . A through hole 42A is formed through the roof board 42 in the plate thickness direction at a portion corresponding to the top light 18 (see FIG. 3).

The roof material 44 is placed on the sheathing board 42 . A roofing (not shown) is laid between the sheathing board 42 and the roof material 44 . Moreover, the roof material 44 is placed avoiding the portion corresponding to the skylight 18 on the roof surface portion 22 .

(top light)
As shown in FIG. 3 , the skylight 18 includes a base board 46 , a frame 50 , a window member 52 and an interior material 54 . That is, as shown in FIG. 5, the base plate material 46 is made of a steel plate as an example, and is formed in a rectangular shape having a size larger than the roof opening 38A of the ALC panel 38 when viewed in the plate thickness direction. . A plate opening 46A is formed through the base plate 46 in the plate thickness direction. The plate opening 46A is formed at a portion corresponding to the roof opening 38A, that is, at a position overlapping the roof opening 38A when viewed perpendicular to the base plate 46, and has a rectangular shape smaller than the roof opening 38A. is formed in

The frame body 50 is formed in a rectangular frame shape smaller than the roof opening 38A. Specifically, the frame 50 has an outer frame 50A and an inner frame 50B as an opening edge member. The outer frame 50A is formed in a rectangular frame shape by an upper outer frame member 50AA, a lower outer frame member 50AB, and side outer frame members 50AC and 50AD. The upper outer frame member 50AA is made of channel steel extending in the X direction and having a dimension in the height direction less than half the thickness of the ALC panel 38 (see FIG. 3). It is arranged so as to open toward the outer frame member 50AB.

Similarly to the upper outer frame member 50AA, the lower outer frame member 50AB extends in the X direction and has a height dimension set to be half or less of the thickness of the ALC panel 38 (see FIG. 3) channel steel. , and the groove is arranged in the direction of opening toward the upper outer frame member 50AA. That is, the upper outer frame member 50AA and the lower outer frame member 50AB are provided facing each other.

Both longitudinal ends of the upper outer frame member 50AA and both longitudinal ends of the lower outer frame member 50AB are arranged in the extending direction of the cut roof beam 28 (see FIG. 2) by the side outer frame members 50AC and 50AD, respectively. connected along. The side outer frame members 50AC and 50AD are each made of channel steel whose height dimension is set to be less than half the thickness of the ALC panel 38 (see FIG. 4), and the openings of the grooves face each other. is placed in

The inner frame 50B is provided inside the outer frame 50A and is formed in a rectangular frame shape by an upper inner frame member 50BA, a lower inner frame member 50BB, and side inner frame members 50BC and 50BD. The upper inner frame member 50BA is made of channel steel extending in the X direction and having a dimension in the height direction less than half the thickness of the ALC panel 38 (see FIG. 3). It is arranged so as to open toward the upper outer frame member 50AA side of the frame 50A. That is, the upper inner frame member 50BA is arranged such that the outer surface of the web 50BE of the upper inner frame member 50BA faces the inside of the roof opening 38A when viewed in the perpendicular direction of the ALC panel 38 . Both longitudinal ends of the upper inner frame member 50BA are inserted into grooves of the side outer frame members 50AC and 50AD of the outer frame 50A and joined together.

Similarly to the upper inner frame member 50BA, the lower inner frame member 50BB extends in the X direction and has a height dimension set to less than half the thickness of the ALC panel 38 (see FIG. 3) channel steel. , and the groove is arranged so as to open to the side opposite to the upper inner frame member 50BA. That is, the lower inner frame member 50BB is arranged such that the outer surface of the web 50BF (see FIG. 3) of the lower inner frame member 50BB faces the inside of the roof opening 38A when viewed in the perpendicular direction of the ALC panel 38. ing. Both ends of the lower inner frame member 50BB in the longitudinal direction are inserted into grooves of the side outer frame members 50AC and 50AD of the outer frame 50A and joined together.

A portion inside the side outer frame members 50AC and 50AD of the outer frame 50A at both ends in the longitudinal direction of the upper inner frame member 50BA, and an outer frame member 50AC on the side of the outer frame 50A at both ends in the longitudinal direction of the lower inner frame member 50BB. , 50AD are connected by side inner frame members 50BC and 50BD, respectively. The side inner frame members 50BC and 50BD are each made of channel steel whose height dimension is set to be less than half the thickness of the ALC panel 38 (see FIG. 4), and the side inner frame member 50BC is The opening of the groove portion is arranged so as to face the side of the outer frame member 50AC on the side of the outer frame 50A. In addition, the side inner frame member 50BD is arranged such that the opening of the groove faces the side outer frame member 50AD of the outer frame 50A. In other words, the side inner frame members 50BC and 50BD are such that the outer surfaces of the webs 50BG and 50BH (see FIG. 4) of the side inner frame members 50BC and 50BD are positioned inside the roof opening 38A when viewed perpendicular to the plane of the ALC panel 38. placed facing each other.

With the above configuration, the outer frame 50A and the inner frame 50B are configured integrally, and the frame body 50 is welded to the indoor side surface of the base plate member 46. As shown in FIG. The base plate 46 integrated with the frame 50 is placed on the ALC panel 38 from the outside while the frame 50 is inserted into the roof opening 38A. By inserting a fastener (not shown) into a plurality of through-holes 46B formed in an outer portion and fastening holes 38B formed in the ALC panel 38 corresponding to the through-holes 46B, the base plate material is fastened. 46 and frame 50 are fixed to ALC panel 38 .

As shown in FIG. 3, the window member 52 is provided at a position corresponding to the plate opening 46A of the base plate 46. As shown in FIG. The window member 52 has a glass 58, a window frame portion 60, and a window frame mounting portion 62. The window frame mounting portion 62 is provided between the roof material 44 and the roofing board 42 and It is fixed to the roof surface portion 22 by being fastened to the base plate material 46 and the frame body 50 via fasteners 42 and crosspieces 40 by fasteners (not shown).

The interior material 54 is composed of a plate member extending from the window frame portion 60 of the window member 52 toward the end portion of the ceiling material 64 on the indoor side. They are fixed via spacers 55 that are in contact with 50BG and 50BH, respectively. The interior material 54 is provided over the entire circumference of the plate opening 46A, so that the cut roof beam 28, the frame 50 and the like are not directly visible from inside and outside.

(Fireproof covering material)
As shown in FIG. 4, the cut roof beam 28 is covered with a fireproof covering material 66 from the indoor side. As an example, the fireproof covering material 66 includes heat-resistant rock wool. Here, the cut roof beam 28 has an ALC at a part of the upper surface of the upper flange 28B (in this embodiment, the range from approximately the center of the width of the upper surface of the upper flange 28B to the end 28BA in the direction away from the top light 18). While supporting the panel 38, the remaining portion of the upper surface of the upper flange 28B (in this embodiment, the range from the approximate center of the width of the upper surface of the upper flange 28B to the end portion 28BB in the direction approaching the skylight 18) is the ALC panel. 38 is located inside the roof opening 38A. One end 66A in the X direction of the fireproof covering material 66 is attached to the indoor side surface of the ALC panel 38, and the other end 66B in the X direction is attached to the remaining upper surface of the upper flange 28B of the cut roof beam 28. attached to the The one end portion 66A is attached to the ALC panel 38 with screws (not shown) without any gaps, and the other end portion 66B is pressed against the end face 38C of the roof opening 38A of the ALC panel 38 without any gaps (not shown). It is stud welded to the cut roof beam 28 by welding pins.

Although not shown, the fireproof covering material 66 is also provided so as to cover the cut roof intermediate beam 36 and the cut roof beam 26 from the indoor side, as shown in FIG. In the case of the cut roof beam 26, since it is not provided at a position corresponding to the top light 18, the ALC panel 38 is supported by the entire upper flange 26B. In this case, the fireproof covering 66 is attached to the indoor side of the ALC panel 38 at both one end 66A and the other end 66B in the X direction.

Next, a construction method for the above-described top light 18 will be described.

As shown in FIG. 5, the base plate material 46 is previously welded to the frame 50 at the factory. The base board 46 is shipped from the factory in a state in which the frame 50 is coupled to the indoor side surface. This step corresponds to the "first step" described in claim 1.

Next, the ALC panel 38 is placed and fixed on the roof structural frame 20 constructed by the cut roof beams 26, 28, the cut roof intermediate beam 36, etc. constructed at the construction site of the building 10 (see FIG. 1). be done. A roof opening 38A is formed in advance in the ALC panel 38, and the base plate material is removed from the outdoor side so that the frame 50 coupled to the base plate material 46 in the first step is inserted into the roof opening 38A. 46 is placed on the ALC panel 38 . This step corresponds to the "second step" described in claim 1.

Next, the portion of the base plate material 46 placed on the ALC panel 38 outside the roof opening 38A is fixed to the ALC panel 38 with fasteners 45 (see FIG. 3). Thereby, the skylight 18 can be provided by the base plate 46 and the frame 50 supported by the ALC panel 38 . This step corresponds to the "third step" described in claim 1.

(Action and effect of the first embodiment)
Next, the operation and effects of this embodiment will be described.

According to this embodiment, as shown in FIG. 1, the skylight structure 11 includes the cut roof beams 26, 28 and cut roof intermediate beam 36, the ALC panel 38, the refractory cladding 66, and the base plate 46. have. The cut-roof beams 26 , 28 and the cut-roof intermediate beam 36 form part of the skeleton of the building 10 . The ALC panel 38 is made of fireproof material and supported by the cut roof beams 26, 28 and the cut roof intermediate beam 36, and as shown in FIG. A communicating roof opening 38A is provided. As shown in FIG. 4, the fireproof covering material 66 covers the cut roof beams 26, 28 and the cut roof intermediate beam 36 from the indoor side. The base plate material 46 is formed in a plate shape and formed to be larger than the roof opening 38A of the ALC panel 38 when viewed in the vertical direction, and is placed from the outdoor side at a position corresponding to the roof opening 38A of the ALC panel 38. It is A plate opening 46A is formed in the base plate 46 at a position corresponding to the roof opening 38A so as to penetrate in the thickness direction and to which the window member 52 is attached. That is, the skylight 18 is provided by the base plate 46 resting on the ALC panel 38 rather than the cut roof beams 26, 28 and the cut roof intermediate beam 36, and the cut roof beams 26, 28 and the cut roof intermediate beam 36 are provided. is surrounded by the ALC panel 38 made of fire-resistant material and the fire-resistant covering material 66 from the indoor side, thereby suppressing heat transfer to the cut roof beams 26, 28 and the cut roof intermediate beam 36 in the event of a fire. can do. As a result, construction can be facilitated and fire resistance can be improved.

A frame body 50 is provided on the indoor side of the base plate material 46 , and the frame body 50 is configured to fit within the roof opening 38</b>A of the ALC panel 38 . Therefore, it is possible to improve the flexural rigidity of the base plate material 46 while suppressing the amount of the base plate material 46 protruding from the ALC panel 38 . As a result, deformation of the base plate material 46 can be suppressed.

Further, the frame body 50 is provided with an inner frame 50B made of channel steel. The inner frame 50B extends at a position corresponding to the outer edge of the plate opening 46A of the base plate 46, and webs 50BE, 50BF, 50BG are provided inside the plate opening 46A when viewed in the perpendicular direction of the ALC panel 38. , 50BH are facing. Therefore, when attaching the interior material 54 corresponding to the window member 52 attached to the plate opening 46A of the base plate 46, the webs 50BE, 50BF, 50BG, and 50BH of the inner frame 50B are used for attachment of the interior material 54. can be used as a base for In other words, a base material for separately providing the interior material 54 inside the skylight 18 is not required. Thereby, cost can be reduced.

Furthermore, the cut roof beams 26, 28 and the cut roof intermediate beam 36 are made of H-section steel, and the thickness of the H-section steel webs 28A, 36A, etc. (the web of the cut roof beam 26 is not shown) It is arranged in an orientation in which the direction is substantially horizontal. Also, the cut roof beams 26, 28 and the cut roof intermediate beam 36 support the ALC panel 38 on a portion of the upper surface of the upper flanges 26B, 28B, 36B, and the rest of the upper surface of the upper flanges 26B, 28B, 36B. The part is covered with a refractory coating. Therefore, when the edge of the roof opening 38A of the ALC panel 38 is supported by the cut roof beams 26, 28 and the cut roof intermediate beam 36, the portion where the ALC panel 38 is not placed is covered with a fireproof covering material. Therefore, heat transfer to the cut roof beams 26, 28 and the intermediate cut roof beam 36 in case of fire can be suppressed. Thereby, fireproof performance can be improved more.

In addition, in the first step in the skylight construction method of the present embodiment, the frame body 50 is joined to the indoor side surface of the base plate material 46, and in the second step, the cut roof beams 26, 28 and the cut roof beams 26, 28 and the cut roof beams 26, 28 are mounted on the building site. A frame 50 is inserted into the roof opening 38A in the ALC panel 38 placed on the intermediate roof beam 36. As shown in FIG. In other words, it is not necessary to connect the base board 46 and the frame 50 at the building site. By inserting the frame 50 into the roof opening 38A, the base plate 46 can also be placed on the ALC panel 38 at the same time. In other words, the base plate member 46 can be placed on the ALC panel 38 using the frame 50 as positioning. Then, in a third step, the portion of the base plate material 46 outside the roof opening 38A is fixed to the ALC panel 38 . That is, the frame body 50 can be fixed to the ALC panel 38 via the base plate material 46 . Therefore, it is not necessary to fix the frame 50 and the base plate 46 separately. As a result, the construction period at the building site can be shortened.

Furthermore, since the top light 18 is provided by the base plate material 46 placed on the ALC panel 38 instead of the cut roof beams 26, 28 and the cut roof intermediate beam 36, the placement of the base plate material 46 on the ALC panel 38 By changing the position, the position of the top light 18 can be adjusted or changed. In other words, it becomes easy to adjust or change the position of the top light 18 .

Furthermore, the part where the cut roof beams 26, 28 and the cut roof intermediate beam 36 are covered with the fireproof covering material 66, and the base plate material 46, the frame body 50, etc. on which the window member 52 is provided are each divided into separate areas. Therefore, it becomes easier to adopt a configuration that satisfies the performance (fire resistance, watertightness, etc.) required in each area, and the quality can be improved.

In this embodiment, the frame body 50 is connected to the base plate member 46. However, the present invention is not limited to this. The base plate member 46 and the frame body 50 may be integrally formed by forming them into a frame shape.

(Second embodiment)
Next, a top light structure according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. FIG. In addition, about the same component part as 1st Embodiment etc. which were mentioned above, the same number is attached and the description is abbreviate|omitted.

The basic configuration of the top light structure 80 according to the second embodiment is the same as that of the first embodiment. It is characterized by the fact that

That is, as shown in FIG. 6A, a plurality of frame body mounting brackets 84 are attached to the frame body 50 . The frame mounting bracket 84 is formed to have an L-shaped cross section by a frame mounting wall portion 84A (see FIG. 6B) made of steel and a roof mounting wall portion 84B made of steel. ing.

The frame mounting wall portion 84A has a plate thickness direction that is the same as the plate thickness direction of the web 24A of the outer frame 50A of the frame 50, and is attached to the outer surface of the web 24A of the outer frame 50A via fasteners (not shown). are tied together.

The plate thickness direction of the roof mounting wall portion 84B is the same as the plate thickness direction of the upper flange 50F of the outer frame 50A of the frame 50, and the upper surface of the roof mounting wall portion 84B is the upper flange 50F of the outer frame 50A. (see FIG. 6B). The frame mounting brackets 84 configured as described above are mounted on the web outer surfaces of the upper outer frame member 50AA, the lower outer frame member 50AB, the side outer frame members 50AC and 50AD in the longitudinal direction of the outer frame 50A of the frame 50, respectively. It is That is, two are provided on each side of the frame 50 .

As shown in FIG. 7, when the frame 50 is inserted into the roof opening 38A, the roof mounting wall portion 84B of the frame mounting bracket 84 is mounted on the ALC panel 38, and the roof mounting wall portion 84B is mounted on the ALC panel 38. It is fastened to a plurality of through holes (not shown) formed in a portion of the mounting wall portion 84B outside the roof opening 38A and to fastening holes 38B (see FIG. 5) formed in the ALC panel 38 corresponding to the through holes. The frame 50 is fixed to the ALC panel 38 via the frame mounting bracket 84 by inserting and tightening the tool 45 .

Next, a method for constructing the above-described skylight 82 will be described.

The frame 50 shown in FIG. 6 is pre-assembled with a plurality of frame mounting brackets 84 at the factory. The frame body 50 is shipped from the factory with the frame body mounting bracket 84 coupled thereto. This step corresponds to the "first step" described in claim 7.

Next, the ALC panel 38 is placed and fixed on the roof structural frame 20 constructed by the cut roof beams 26, 28, the cut roof intermediate beam 36, etc. constructed at the construction site of the building 10 (FIG. 1). reference). As shown in FIG. 7, the ALC panel 38 has a roof opening 38A formed in advance. The mounting wall portion 84B is mounted on the ALC panel 38 . This step corresponds to the "second step" described in claim 7.

Next, the portion outside the roof opening 38A of the roof mounting wall portion 84B of the frame mounting bracket 84 mounted on the ALC panel 38 is fixed to the ALC panel 38 with the fasteners 45 . Accordingly, by attaching the window member 52 to the frame 50 supported by the ALC panel 38, the skylight 82 can be provided. This step corresponds to the "third step" described in claim 7.

(Action and effect of the second embodiment)
Next, the operation and effects of the second embodiment will be described.

Even with the above configuration, the top light structure 11 is configured in the same manner as the top light structure 11 of the first embodiment except that the frame 50 of the top light 82 is fixed to the ALC panel 38 via the frame mounting bracket 84. Effects similar to those of the first embodiment can be obtained. The skylight structure 80 also includes cut roof beams 26 , 28 and intermediate cut roof beam 36 , ALC panel 38 , fireproof cladding 66 , frame 50 , and frame mounting brackets 84 . The cut-roof beams 26 , 28 and the cut-roof intermediate beam 36 form part of the skeleton of the building 10 . The ALC panel 38 is made of a refractory material and supported by the cut roof beams 26, 28 and the cut roof intermediate beam 36, and is partially provided with a roof opening 38A that communicates the inside and outside of the building 10. It is The fireproof covering material 66 covers the cut roof beams 26, 28 and the cut roof intermediate beam 36 from the indoor side. The frame body 50 is formed in a frame shape that fits within the roof opening 38A of the ALC panel 38, and has a window member 52 attached thereto. The frame mounting bracket 84 is formed to have an L-shaped cross section by a frame mounting wall portion 84A and a roof mounting wall portion 84B. attached to the On the other hand, the roof mounting wall portion 84B is mounted and fixed to a portion of the ALC panel 38 outside the roof opening 38A from the outside. Therefore, the frame 50 is fixed to the ALC panel 38 via the frame mounting bracket 84 . That is, the skylight 18 is provided by the frame body 50 fixed to the ALC panel 38 instead of the cut roof beams 26, 28 and the cut roof intermediate beam 36, and the cut roof beams 26, 28 and the cut roof intermediate beam 36 are provided. , the ALC panel 38 made of fire-resistant material and the fire-resistant covering material 66 from the indoor side suppress heat transfer to the cut roof beams 26, 28 and the cut roof intermediate beam 36 in case of fire. be able to. As a result, construction can be facilitated and fire resistance can be improved.

Two frame mounting brackets 84 for fixing the frame 50 to the ALC panel 38 are provided on each side of the frame 50 . That is, compared to the base plate material 46 of the first embodiment provided over the entire circumference of the frame 50, the weight and cost can be reduced.

The above-described frame mounting bracket 84 has an L-shaped cross section formed by the frame mounting wall portion 84A and the roof mounting wall portion 84B. By being provided from the upper surface of the ALC panel 38 to the upper surface of the frame 50, the cross-sectional shape of the frame mounting bracket may be formed in a substantially T shape, or may be formed in another shape.

Moreover, although the inner frame 50B is formed in a rectangular frame shape, it is not limited to this, and may be formed in a so-called ladder shape by connecting a pair of H-shaped steels to the outer frame 50A.

Furthermore, although the outer frame 50A of the frame body 50 is made of channel steel, it is not limited to this, and may be made of an angle member or other elongated member.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and it is possible to implement various modifications other than the above without departing from the spirit of the present invention. Of course.

11 Top light structure 26 Cut roof beam (steel beam)
26B Upper flange 28 Cut roof beam (steel beam)
28A Web 28B Upper flange 36 Cut roof intermediate beam (steel frame beam)
36A web 36B upper flange 38 ALC panel (roof panel)
38A Roof opening 46 Backing plate 46A Plate opening 50 Frame 50A Outer frame 50B Inner frame 50BE Web 50BF Web 50BG Web 50BH Web 52 Window member 66 Fireproof covering material 80 Top light structure 84 Frame mounting bracket 84A Frame mounting wall Part 84B Roof mounting wall part

Claims (7)

Steel beams that form part of the frame of the building,
a roof panel supported by the steel beams, made of a fireproof material, and partially having a roof opening communicating between the inside and the outside of the building;
a fireproof covering material surrounding the steel beam together with the roof surface material by covering the steel beam from the indoor side;
It is formed in a plate-like shape and is formed to be larger than the roof opening of the roof panel when viewed in the vertical direction, and is placed from the outdoor side at a position corresponding to the roof opening of the roof panel. a base plate member having a plate opening penetrating in the thickness direction at a position corresponding to the opening and provided with a window member;
A top light structure with A frame that fits inside the roof opening of the roof panel is attached to the base plate from the indoor side,
The skylight structure according to claim 1. Steel beams that form part of the frame of the building,
a roof panel supported by the steel beams, made of a fireproof material, and partially having a roof opening communicating between the inside and the outside of the building;
a fireproof covering material surrounding the steel beam together with the roof surface material by covering the steel beam from the indoor side;
a frame fitted in the roof opening of the roof surface material and formed in a frame shape and having a window member attached thereto;
It is formed including a frame mounting wall portion and a roof mounting wall portion, wherein the frame mounting wall portion is mounted on the outer frame of the frame body, and the roof mounting wall portion is at least the roof surface member. a frame mounting bracket placed and fixed to a portion outside the roof opening from the outside;
A top light structure with The frame is provided with an opening edge member made of channel steel and having an outer surface of the web facing the inside of the roof opening when viewed in the perpendicular direction of the roof panel.
The skylight structure according to claim 2 or 3. The steel beam is made of H-shaped steel with a web thickness direction that is substantially horizontal. the remaining portion of the top surface of the flange is covered by the refractory cladding;
The skylight structure according to any one of claims 1-4. Steel beams that form part of the frame of the building,
a roof panel supported by the steel beams, made of a fireproof material, and partially having a roof opening communicating between the inside and the outside of the building;
a fireproof covering material surrounding the steel beam together with the roof surface material by covering the steel beam from the indoor side;
It is formed in a plate-like shape and is formed to be larger than the roof opening of the roof panel when viewed in the vertical direction, and is placed from the outdoor side at a position corresponding to the roof opening of the roof panel. a base plate member having a plate opening penetrating in the thickness direction at a position corresponding to the opening and provided with a window member;
a frame that fits inside the roof opening of the roof panel and is attached to the base board from the indoor side;
Applied to a skylight structure with
a first step of preliminarily joining the base plate and the frame;
a second step of inserting the frame into the roof opening of the roof panel placed on the steel beam at the building site;
a third step of inserting the frame into the roof opening to fix a portion of the base plate placed on the roof surface material outside the roof opening to the roof surface material;
A top light construction method having. Steel beams that form part of the frame of the building,
a roof panel supported by the steel beams, made of a fireproof material, and partially having a roof opening communicating between the inside and the outside of the building;
a fireproof covering material surrounding the steel beam together with the roof surface material by covering the steel beam from the indoor side;
a frame fitted in the roof opening of the roof surface material and formed in a frame shape and having a window member attached thereto;
It is formed including a frame mounting wall portion and a roof mounting wall portion, wherein the frame mounting wall portion is mounted on the outer frame of the frame body, and the roof mounting wall portion is at least the roof surface member. a frame mounting bracket placed and fixed to a portion outside the roof opening from the outside;
Applied to a skylight structure with
a first step of coupling the frame mounting bracket and the frame in advance;
a second step of inserting the frame into the roof opening of the roof panel placed on the steel beam at the building site;
By inserting the frame into the roof opening, the portion of the roof mounting wall portion of the frame mounting bracket mounted on the roof surface material corresponding to the outside of the roof opening is moved to the roof surface material. A third step of fixing to
Top light construction method with.

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