JP2021155964A - Reinforcement structure of shutter - Google Patents

Abstract

To reinforce a shutter with an inexpensive structure.SOLUTION: A reinforcement structure of a shutter (10) for dividing an indoor space of a building into two spaces, includes: a reinforcing column (25) erected in one of the two spaces so as to face a shutter slat (21) and extended upward from a floor surface (15) of the space; and a fastening member used to fasten the reinforcing column (25) to the shutter slat (21) at a predetermined fastening point (P).SELECTED DRAWING: Figure 2

Description

The present invention relates to a shutter reinforcing structure, and more particularly to a shutter reinforcing structure that partitions an indoor space of a building such as a warehouse.

Shutters are often installed at the entrances and exits of warehouses and garages facing the outdoors. Since the shutter provided facing the outdoors is required to have strength, a technique for reinforcing the shutter has been conventionally proposed.

For example, Japanese Patent Application Laid-Open No. 9-60451 (Patent Document 1) discloses that a wire for preventing bending deformation of the shutter slat inward is stretched so as to extend over both guide rails of the shutter slat. Has been done. Further, Japanese Patent No. 4820457 (Patent Document 2) proposes a technique in which a reinforcing pillar for reinforcing a shutter is provided so that the reinforcing pillar can be horizontally displaced to a stored state when the reinforcing pillar is unnecessary.

Japanese Unexamined Patent Publication No. 9-60451 Japanese Patent No. 4820457

In a large distribution warehouse or the like, the entry and exit of tenants is fluid, so there are cases where the partition between tenants is composed of shutters. Such shutters that partition the indoor space of a building are generally less strong than shutters that face the outdoors because they are not directly exposed to wind pressure from typhoons or strong winds.

When the shutter is used as a partition, if the strength of the shutter slats themselves is increased, the cost will increase in a large distribution warehouse that requires a large number of shutters. Therefore, a technique capable of reinforcing the shutter with an inexpensive configuration has been desired.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a shutter reinforcing structure capable of reinforcing a shutter with an inexpensive configuration.

The shutter reinforcement structure according to an aspect of the present invention relates to the shutter reinforcement structure that divides the indoor space of the building into two spaces, and is erected in one of the two spaces so as to face the shutter columns. A reinforcing column extending upward from the floor surface of the space and a fastening member for fastening the reinforcing column and the shutter slat are provided.

It is desirable that the reinforcing columns are erected on the surface side of the shutter slats.

The shutter case containing the shutter slats winding device is fixed to the upper wall located between the two spaces. The shutter case is arranged so as to project to the other space side of the two spaces, for example. In this case, the reinforcing column is erected in the space opposite to the space in which the shutter case is arranged.

Preferably, the upper end portion of the reinforcing column is fixed to the skeleton portion of the upper wall portion via the mounting member.

The mounting member includes a top plate portion that is fixed to the horizontal bar member constituting the skeleton portion via the base member, and a hanging portion that hangs downward from the top plate portion and the upper end portion of the reinforcing column is fixed. Is desirable.

Preferably, the reinforcing column is an H-section steel having a pair of flanges and a web connecting the pair of flanges. In this case, it is desirable that the droop is fixed to the web.

Preferably, an elastic member is interposed at the fastening portion between the reinforcing column and the shutter slat.

It is desirable that a plurality of reinforcing columns are erected at a pitch of 2000 mm or more and 3000 mm or less.

According to the present invention, the shutter can be reinforced with an inexpensive configuration.

It is a schematic plan view of the distribution warehouse to which the reinforced structure of the shutter which concerns on embodiment of this invention is applied. It is a front view which shows typically the reinforcing structure of the shutter which concerns on embodiment of this invention. It is sectional drawing which shows typically the attachment structure of the upper end part of the reinforcing column in embodiment of this invention. FIG. 2 is a cross-sectional view of a portion III shown in FIG. 2, and FIG. 4 is a cross-sectional view of a portion IV shown in FIG. It is sectional drawing which shows typically the attachment structure of the lower end part of the reinforcing column in Embodiment of this invention, and the fixed structure of a shutter slat and a reinforcing column. It is a figure which shows the structural example of the attachment member in embodiment of this invention. It is a figure which shows the structural example of the base member in embodiment of this invention. It is a front view which shows typically the structure of the existing shutter.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

(About the outline)
First, the outline of the shutter reinforcement structure according to the present embodiment will be described with reference to FIGS. 1, 2, and 7. FIG. 1 is a schematic plan view of a large distribution warehouse 1. FIG. 2 is a front view schematically showing the reinforcing structure of the shutter. FIG. 7 is a front view schematically showing the structure of an existing shutter.

With reference to FIG. 1, the distribution warehouse 1 is constructed facing the roadway, and a plurality of shutters 90 are provided at locations serving as entrances and exits. In the large distribution warehouse 1, the shutter 10 is used as a partition between tenants because the tenants are fluidly replaced. In the example shown in FIG. 1, the indoor space of the distribution warehouse 1 can be divided into a plurality of areas at the positions of a plurality of lane markings D1 to D5 extending along the direction intersecting the road, and each lane marking D1 to D1. A plurality of shutters 10 are arranged along D5.

In the distribution warehouse 1, as an example, only the shutter 10 at the position of the lane marking D1 is in the fully closed state, and the shutter 10 at the other lane markings D2 to D5 is in the fully open state. In FIG. 1, only the shutters 10 and 90 in the fully closed state are hatched for easy understanding. In this case, since the indoor space is divided into two spaces S1 and S2 via the lane marking D1, a plurality of shutters 10 on the lane marking D1 function as a partition wall between the tenants A and B. Here, it is assumed that the smaller space S1 is the area of tenant A and the larger space S2 is the area of tenant B. The space S1 of the tenant A is one-third or less the size of the space S2 of the tenant B (about one-fifth the size in the example of FIG. 1).

A plurality of pillars 11 are erected on the lane marking D1 at intervals from each other, and one shutter 10 is arranged between the adjacent pillars 11. As shown in FIG. 7, each shutter 10 includes a shutter slat 21 that is bridged between the pillars 11 in a fully closed state, a winding device 22 that winds up the shutter slat 21, and a pair that guides the vertical movement of the shutter slat 21. Includes a guide rail 23. The front view of FIG. 7 is, for example, a view seen from the space S1 side of the tenant A. In FIG. 7, the width direction of the shutter 10 is indicated by an arrow A1.

The winding device 22 is built in the shutter case 24. The shutter case 24 is fixed to the upper wall portion 13 located between the spaces S1 and S2 and above the opening 12 between the pillars 11. The shutter case 24 is arranged, for example, facing the space S2. The guide rail 23 may be embedded in the pillar 11.

The width (opening width) W1 of the opening 12 between the columns 11 is larger than the height H of the opening 12, for example, twice or more. The height H of the opening 12 is equal to the movable range of the shutter slat 21. When the shutter slats 21 are bridged between the pillars 11, the width of the shutter slats 21 corresponds to the opening width W1 and is therefore more than twice the opening height H. As shown, the shutter between the pillar 14 and the other pillar 11 even when the opening 12 is divided by a pillar 14 for holding the door 16 arranged in the vicinity of one pillar 11. The width W2 of the slat 21 is at least twice the opening height H. The opening height H is 3000 mm to 4500 mm, for example, about 4000 mm. The width W1 of the shutter slats 21 is 8000 mm to 11000 mm, for example, about 9000 mm.

In the distribution warehouse 1 as shown in FIG. 1, when all the shutters 90 provided at the entrance / exit of tenant B having a larger area are fully closed, they are provided at the entrance / exit of tenant A having a smaller area. When the shutter 90 is opened, a gust of wind may blow from the doorway of tenant A. In this case, wind pressure is applied to the shutter 10 as a partition from the tenant B. That is, the shutter slats 21 receive wind pressure. Especially when the shutter slats 21 are wide as described above, they cannot withstand the wind pressure and may be damaged.

On the other hand, in the present embodiment, as shown in FIG. 2, a plurality of (for example, three) reinforcing columns 25 for reinforcing the shutter slats 21 are provided between the columns 11. The reinforcing columns 25 extend vertically from the floor surface 15 of the distribution warehouse 1 to the upper wall portion 13 and are fixed to the shutter slats 21.

That is, the reinforcing structure of the shutter 10 according to the present embodiment is erected in one of the spaces S1 and S2 so as to face the shutter slat 21, and is reinforced so as to extend upward from the floor surface 15 of the space. The column 25 and a fastening member (screw 84 described later) for fastening the reinforcing column 25 and the shutter slat 21 at a predetermined fastening portion P are provided.

It is desirable that the reinforcing column 25 is erected on the surface side of the shutter slat 21. In this case, it is desirable that the screw 84 as the fastening member is fixed from the back surface side of the shutter slat 21. The surface side of the shutter slat 21 represents a convex (substantially flat surface) side of the slat material 210 (FIG. 4) constituting the shutter slat 21.

The reinforcing column 25 is made of metal and is typically made of H-shaped steel. In this case, the reinforcing column 25 is composed of a pair of flanges 251,252 and a web 253 connecting the central portions of the flanges 251,252, as shown in FIG. 3 and the like. The reinforcing columns 25 are arranged so that the web 253 is along the direction (front and back directions) orthogonal to the shutter slats 21. The reinforcing column 25 made of H-shaped steel has higher strength than U-shaped (U-shaped) channel steel, and can simplify the installation work described later and reduce costs compared to square steel. There is a merit that can be done.

In the present embodiment, a plurality of reinforcing columns 25 are erected at a constant pitch (for example, 2300 mm pitch). The number and pitch of the reinforcing columns 25 are determined according to the width of the shutter slats 21 to be reinforced and the required strength (wind pressure resistance). The pitch of the reinforcing columns 25 is preferably 2000 mm or more and 3000 mm or less. From the viewpoint of wind pressure resistance only, only one reinforcing column 25 may be arranged in the center of the shutter slat 21.

(About the mounting structure of reinforcing columns)
The mounting structure of the reinforcing column 25 will be described with reference to FIGS. 3 and 4. FIG. 3 is a cross-sectional view of a portion III shown in FIG. 2, and FIG. 4 is a cross-sectional view of a portion IV shown in FIG. Arrows A2 in FIGS. 3 and 4 represent the surface side of the shutter slat 21, and the same direction is also referred to as forward.

As shown in FIG. 3, the reinforcing column 25 is typically arranged in the space S1 opposite to the space S2 in which the shutter case 24 is arranged. In the present embodiment, the shutter case 24 is arranged so as to project into the space S2 on the back surface side of the shutter slats 21. The shutter case 24 is attached and fixed to the vertical bar timber 132 of the upper wall portion 13 via the bracket 241.

The upper wall portion 13 has a horizontal crosspiece 131 that intersects the lower end of the vertical crosspiece 132 and extends in the lateral direction, a decorative surface material 133 that is fixed to the vertical crosspiece 132 and is exposed to the space S1, and a horizontal crosspiece 131. And a decorative frame 134 located below the decorative surface material 133 and extending laterally. The horizontal crosspiece 131 and the vertical crosspiece 132 constitute the skeleton 130 of the upper wall portion 13. The decorative surface material 133 may be a single layer or a plurality of layers.

As shown in FIG. 3, the upper end portion of the reinforcing column 25 is fixed to the skeleton portion 130 of the upper wall portion 13 via the mounting member 31. The mounting member 31 is typically made of metal. In the present embodiment, it is fixed to the base member 39 welded and fixed to the cross rail member 131 via the mounting member 31. The base member 39 is arranged inside, for example, the hollow decorative frame 134. The base member 39 is made of, for example, a steel material having a U-shaped cross section, and the tip of an upward flange portion is welded and fixed to the lower surface of the cross rail member 131.

As shown in FIG. 4, the lower end portion of the reinforcing column 25 is fixed to the floor surface 15 via a base member 41 integrally provided at the lower end of the reinforcing column 25. Specifically, the base member 41 is a metal base plate formed in a flat plate shape, and is fixed to the concrete floor by anchor bolts 86 penetrating in the plate thickness direction. Anchor bolt 86 is, for example, a chemical anchor (registered trademark).

Configuration examples of the mounting member 31 and the base member 41 will be described with reference to FIGS. 5 and 6.

(Structure example of mounting member)
A configuration example of the mounting member 31 will be described with reference to FIGS. 3 and 5. FIG. 5 corresponds to a cross-sectional view (look-up view) along the VV line of FIG.

The mounting member 31 has a top plate portion 32 fixed to the horizontal bar member 131 via the base member 39, and a plate-shaped hanging portion that hangs downward from the top plate portion 32 and the upper end portion of the reinforcing column 25 is fixed. Includes 33 and. In the mounted state, there may be a gap between the top plate portion 32 and the upper end of the reinforcing column 25. Both the top plate portion 32 and the hanging portion 33 typically have a substantially rectangular (square or rectangular) shape in a plan view.

The top plate portion 32 is screwed to the base member 39 from below by screws 81 penetrating in the plate thickness direction. As shown in FIG. 5, the lateral length L4 of the top plate portion 32 is longer than the width dimension (the length of the flanges 251,252) L2 of the reinforcing column 25. Further, in the present embodiment, since a part of the base member 39 is located in front of the reinforcing column 25, the length L3 in the front-rear direction of the top plate portion 32 is longer than the depth dimension L1 of the reinforcing column 25. .. For example, a plurality of (for example, two) screws 81 are driven into the left and right sides of the top plate portion 32.

The depth dimension L1 and the width dimension L2 of the reinforcing column 25 are defined in the range of, for example, 100 mm to 150 mm in consideration of the load capacity. In the present embodiment, these dimensions L1 and L2 are 125 mm as an example. The thickness T1 of the flanges 251,252 of the reinforcing column 25 is 8 mm to 13 mm, for example, 10 mm.

In this case, the front-rear length L3 of the top plate portion 32 is, for example, 180 mm, and the lateral length L4 of the top plate portion 32 is, for example, 230 mm. The thickness of the top plate portion 32 is, for example, 9 mm, and the thickness of the hanging portion 33 is smaller than the thickness of the top plate portion 32, for example, 6 mm. It is desirable that the thickness of the top plate portion 32 is equal to or greater than the thickness of the hanging portion 33.

As shown in FIG. 3, the hanging portion 33 has a rectangular shape that is long in the vertical direction in a plan view. That is, the vertical length of the hanging portion 33 is longer than the width dimension (length in the front-rear direction). The width of the hanging portion 33 is ½ or more and preferably 2/3 or more of the width (length in the front-rear direction) of the web 253 in order to secure the contact area of the reinforcing column 25 with the web 253. ..

The hanging portion 33 is provided with a plurality (for example, two) through holes 33h penetrating in the plate thickness direction in the vertical direction. The web 253 of the reinforcing column 25 is also provided with a through hole 253h penetrating in the plate thickness direction at a position corresponding to the through hole 33h. The hanging portion 33 is arranged on one side of the web 253 in a surface contact state, a bolt 82 is passed through the through holes 33h and 253h, and the hanging portion 33 is fastened and fixed to the web 253 by a nut 83.

(Structure example of base member)
A configuration example of the base member 41 will be described with reference to FIGS. 4 and 6. FIG. 6 corresponds to a cross-sectional view taken along the VI-VI line of FIG.

The base member 41 extends in the horizontal direction and is connected to the lower end surface of the reinforcing column 25 so as to be orthogonal to the reinforcing column 25. That is, the upper surface of the base member 41 is previously connected to the lower end surface of the reinforcing column 25 by welding or the like. The base member 41 is also typically formed in a substantially rectangular shape in a plan view. The thickness of the base member 41 may be the same as the thickness of the top plate portion 32 of the mounting member 31, for example, 9 mm.

As shown in FIG. 6, the base member 41 is provided with through holes 41h penetrating in the plate thickness direction on both sides of the web 253, and anchor bolts 86 are inserted through the through holes 41h at the time of fixing.

It is desirable that the lateral length L6 of the base member 41 is larger than the width dimension L2 (FIG. 5) of the reinforcing column 25 and projects in the left-right direction from the reinforcing column 25. The lateral length L6 may be the same as the lateral length L4 of the top plate portion 32 of the mounting member 31, for example, 230 mm. As a result, the reinforcing columns 25 can be erected on the floor surface 15 in a stable state.

On the other hand, it is desirable that the length L5 of the base member 41 in the front-rear direction is the same as the depth dimension L1 (FIG. 5) of the reinforcing column 25. As a result, it is possible to prevent interference with the lower end member 211 of the shutter slat 21 located on the back side while fulfilling the function as a base plate, and prevent the operator of tenant A from tripping over the base member 41.

(Fixed structure of reinforcing columns and shutter slats)
The fixed structure of the reinforcing column 25 and the shutter slat 21 will be described with reference to FIG. As shown in FIG. 4, the flange 251 of the reinforcing column 25 and the shutter slat 21 are tightened and fixed by a screw 84 as a fastening member. It is desirable that there are a plurality of fastening points with the screws 84 to one reinforcing column 25. FIG. 2 schematically shows a fastening portion P with a screw 84 to one reinforcing column 25. The mounting pitch of the screws 84 is preferably 1000 mm or less. In this embodiment, four fastening points P are shown.

The screw 84 is screwed from the back surface side (space S2 side) of the shutter slat 21 into the slat material 210 constituting the shutter slat 21 and the flange 251 of the reinforcing column 25. More specifically, the screw 84 is installed from the back surface side so as to penetrate the vertical central portion 210c of the slat material 210. A washer 85 may be interposed between the back surface of the slat material 210 and the head of the screw 84.

Each slat material 210 of the shutter slat 21 is connected to another slat material 210 adjacent in the vertical direction at the upper and lower end portions 210a and 210b, and the central portion 210c in the vertical direction is formed in a dish shape so that the back surface side is slightly recessed. Has been done.

It is desirable that a plate-shaped elastic member 51 made of rubber or the like is interposed between the flange 251 of the reinforcing column 25 and the surface of the slat material 210 at the fastening portion by the screw 84. The thickness T2 of the elastic member 51 is equal to or greater than the minimum gap L7 between the flange 252 and the vertical central portion 210c (the surface of the shutter slat 21) of the slat material 210, and is, for example, 10 mm. The vertical dimension L8 of the elastic member 51 is preferably 80 mm or more, and is preferably 80 mm or more in the vertical length L9 or more of the vertical central portion 210c of the slat material 210. As shown in FIG. 6, the width dimension L10 of the elastic member 51 may be equal to or less than the width dimension L2 (FIG. 5) of the reinforcing column 25, but is preferably 50 mm or more, for example.

(About construction procedure)
A construction procedure for reinforcing the shutter 10 will be described with reference to FIGS. 3 to 6.

First, the operator fixes the mounting member 31 to the base member 39 welded and fixed to the cross rail member 131 of the upper wall portion 13 with screws 81. That is, the top plate portion 32 of the mounting member 31 is fixed to the base member 39 from below with a screw 81. The mounting member 31 is fixed in a state of being positioned so as to form a gap corresponding to the thickness of the elastic member 51 between the surface position of the shutter slat 21 and the top plate portion 32.

The base member 39 is provided only at the erection location of the reinforcing column 25. Therefore, by fixing the mounting member 31 to the base member 39, the mounting member 31 can be arranged at the upright position of the reinforcing column 25.

Next, the reinforcing column 25 is prepared. It is desirable that the elastic member 51 is adhesively fixed to the flange 252 of the reinforcing column 25 in advance at a portion corresponding to the fastening portion P shown in FIG.

The operator positions the upper end of the web 253 of the reinforcing column 25 so as to abut the hanging portion 33 of the mounting member 31 to erect the reinforcing column 25. Since the base member 41 is integrally connected to the lower end of the reinforcing column 25, the reinforcing column 25 is temporarily supported on the floor surface 15 by the base member 41.

In that state, both are tightened and fixed by the bolt 82 penetrating the hanging portion 33 of the mounting member 31 and the web 253 of the reinforcing column 25. As a result, the upper end portion of the reinforcing column 25 is fixed to the skeleton portion 130 of the upper wall portion 13 via the mounting member 31. It is desirable that the through hole 33h provided in the hanging portion 33 is an elongated hole having a length in the vertical direction. As a result, some misalignment with the through hole 253h provided in the web 253 can be tolerated.

When the upper end of the reinforcing column 25 is fixed, the base member 41 provided at the lower end of the reinforcing column 25 is fixed to the floor with anchor bolts 86. As a result, the fixing of the reinforcing column 25 is completed.

After the fixing of the reinforcing column 25 is completed, the operator performs the fixing work of the shutter slat 21 and the reinforcing column 25. Elastic members 51 are adhesively fixed to the flange 252 of the reinforcing column 25 at intervals in the vertical direction. The operator drives the screw 84 into the place where the elastic member 51 is located from the back surface side of the shutter slat 21. As a result, the fixing of the shutter slats 21 and the reinforcing columns 25 is completed.

The construction order is not limited to the above-mentioned order. For example, the mounting member 31 is temporarily fixed to the upper end of the reinforcing column 25, and the lower end of the reinforcing column 25 is fixed to the floor surface 15 before mounting. The member 31 may be fixed to the base member 39, and the attachment member 31 and the reinforcing column 25 may be finally fixed.

As described above, according to the present embodiment, the existing shutter 10 can be reinforced inexpensively and easily without replacing the shutter slat 21 with a high-strength one. Therefore, it can withstand sudden wind pressure. That is, since at least one reinforcing column 25 fixed to the shutter slats 21 with screws 84 is erected on the front surface side of the shutter slats 21, sudden wind pressure is applied from the front surface side or the back surface side of the shutter slats 21. Even if it is received, the bending deformation of the shutter slat 21 can be suppressed. As a result, it is possible to prevent the shutter slat 21 from being damaged and the guide rail 23 from being separated from the guide rail 23.

Further, in the present embodiment, since a plurality of reinforcing columns 25 are arranged at a predetermined pitch, the shutter 10 reinforced by the reinforcing columns 25 can be effectively used as a partition wall of a warehouse that requires high load capacity. Can be used. That is, the shutter 10 reinforced by the reinforcing columns 25 can withstand a load specified by the Warehouse Business Law, that is, 2500 N / m ^{2 or more.}

Further, since the elastic member 51 is interposed between the shutter slat 21 and the reinforcing column 25, damage to the shutter slat 21 can be prevented even if the shutter slat 21 is slightly bent.

If it becomes necessary to open the reinforced shutter slats 21 due to the replacement of tenants, the reinforcing columns 25 are removed in the reverse order of the above construction order, and the insertion holes for the screws 84 remaining in the shutter slats 21 are inserted. The reinforcing structure of the shutter 10 according to the present embodiment is suitable for a large distribution warehouse 1 because it only needs to be sealed.

(Modification example)
In the present embodiment, an example in which the shutter case 24 is arranged facing the space (S2) on the back surface side of the shutter slat 21 has been described, but the shutter case 24 is the space (S1) on the front surface side of the shutter slat 21. ) May be arranged. In this case, the decorative surface material 133 of the upper wall portion 13 is arranged so as to face the space (S2) on the back surface side of the shutter slats 21.

In such a case, the reinforcing column 25 may be erected in the space facing the shutter case 24, that is, the space (S1) on the surface side of the shutter slats 21, or on the opposite side of the space facing the shutter case 24. It may be erected in a space, that is, a space (S2) on the back surface side of the shutter slat 21. In any case, it is desirable that the upper end portion of the reinforcing column 25 is fixed to the skeleton portion 130 of the upper wall portion 13.

Further, as described above, the reinforcing column 25 is preferably H-shaped steel, but the reinforcing column 25 is not limited to this, and may be made of square steel or the like.

Further, in the present embodiment, the reinforcing structure of the shutter 10 that partitions the indoor space of the distribution warehouse 1 has been described. However, the above-mentioned reinforcing structure of the shutter 10 partitions the indoor space of a building other than the distribution warehouse 1, such as a factory. It can also be applied to shutters.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Logistics warehouse, 10,90 shutters, 11,14 pillars, 13 upper walls, 15 floors, 21 shutter slats, 22 hoisting devices, 23 guide rails, 24 shutter cases, 25 reinforcing pillars, 31 mounting members, 32 top plates Parts, 33 hangings, 39 base members, 41 base members, 51 elastic members, 81,84 screws, 82 bolts, 83 nuts, 86 anchor bolts, 130 skeletons, 131 horizontal crosspieces, 132 vertical crosspieces, 251,252 Flange, 253 web, D1-D5 marking line, P fastening point.

Claims (8)

Regarding the reinforcement structure of the shutter that divides the indoor space of the building into two spaces
In one of the two spaces, a reinforcing column that is erected so as to face the shutter slats and extends upward from the floor surface of the space,
A shutter reinforcing structure including a fastening member for fastening the reinforcing column and the shutter slats. The reinforcing structure for a shutter according to claim 1, wherein the reinforcing column is erected on the surface side of the shutter slats. The shutter case containing the shutter slats winding device is fixed to the upper wall portion located between the two spaces.
The shutter reinforcing structure according to claim 1 or 2, wherein the shutter case is arranged so as to face the other space of the two spaces. The reinforcing structure for a shutter according to any one of claims 1 to 3, wherein the upper end portion of the reinforcing column is fixed to a skeleton portion of an upper wall portion located between the two spaces via a mounting member. .. The mounting member includes a top plate portion that is fixed to the cross rail material that constitutes the skeleton portion via a base member, and a hanging portion that hangs downward from the top plate portion and the upper end portion of the reinforcing column is fixed. The reinforcing structure of the shutter according to claim 4, including the above. The reinforcing column is an H-section steel having a pair of flanges and a web connecting the pair of flanges.
The shutter reinforcing structure according to claim 5, wherein the hanging portion is fixed to the web. The shutter reinforcing structure according to any one of claims 1 to 6, wherein an elastic member is interposed at the fastening portion between the reinforcing column and the shutter slats. The shutter reinforcing structure according to any one of claims 1 to 7, wherein a plurality of the reinforcing columns are erected at a pitch of 2000 mm or more and 3000 mm or less.

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