JP7545274B2 - Fireproof insulation device, fireproof insulation method, and fireproof insulation structure - Google Patents

Description

The present invention relates to a fireproof insulation device, a fireproof insulation method, and a fireproof insulation structure, and in particular to a fireproof insulation device, a fireproof insulation method, and a fireproof insulation structure that closes gaps formed between the mullions and the end faces of the floor slabs of a building made of metal curtain walls with fireproof panels attached between the mullions.

Traditionally, in high-rise buildings, an exterior wall construction method has been used in which non-load-bearing walls called curtain walls are fitted into the framework of the foundation, columns, etc., to prevent the burden of loads on the building.

Curtain wall exterior construction is made up of several components, and the most typical type of metal curtain wall exterior construction is the mullion type, in which partition materials called mullions are erected between the upper and lower floors and beams, and wall materials such as glass and fireproof panels are fitted into them.

In addition, when a building is divided into specific fire compartments, if the portion that is divided by the fire compartment is made of glass, it is possible that the fire may spread through the exterior wall to adjacent compartments or to the floors above or below. Therefore, fire-resistant floors, walls, or specific fire protection equipment called "spandrels" that separate adjacent fire compartments are provided in the dividing areas.

Specifically, the wall material installed in the spandrel section where the floor slab and exterior wall meet is a fireproof panel that is integrated with a glass surface on the outdoor side and a fireproof board on the indoor side of the glass surface.

This type of mullion-type metal curtain wall is characterized by a design in which wall materials such as glass and fireproof panels are attached to the interior side of the mullion, emphasizing the vertical lines of the mullion from the outside. In recent years, a construction method called back mullion, in which wall materials are attached to the exterior side of the mullion, has become more common.

FIG. 15 is a front view, a top view, and a side cross-sectional view showing an example of a structure of a mullion-type metal curtain wall.
As shown in Figure 15, a post-type metal curtain wall is made up of post 21, which are vertical bar members that are erected across the upper and lower floor slabs 10, and transoms 22, which are interlocking members that connect the post 21 horizontally, assembled in a lattice pattern and fixed to the floor slab 10 with fixing brackets 23.

The floor slab 10 is supported by steel beams 70, and the uprights 21 or the fireproof panels 24 fitted into the uprights 21 are fixed to the floor slab 10 by fastening brackets 23.
Furthermore, wall materials 20 such as fireproof panels 24 and glass windows 25 are fitted between the mullions 21 and transoms 22, which are assembled in a lattice pattern. The mullions 21 and transoms 22 are made of aluminum to improve their light weight, weather resistance, and workability.

FIG. 16 is a plan cross-sectional view showing the details of a spandrel panel portion of a mullion-type metal curtain wall.
As shown in FIG. 16, the gap between the floor slab 10 and wall materials 20 such as fireproof panels 24 and glass windows 25 is blocked by inserting a fireproof interlayer material 30 supported by support brackets 40 (see, for example, Patent Document 1 or Patent Document 2).

As mentioned above, the mullions 21 are usually made of aluminum, which has low fire resistance and melts at around 600°C. For example, as shown in Figure 16, if a fire breaks out outdoors, the mullions 21 exposed to the outdoors may melt and be burned down by the heat of the fire.

If the mullions 21 melt and burn in a fire, they will no longer be able to function as spandrels. For this reason, fire resistance is ensured by increasing the number and thickness of layers of aluminum material that make up the mullions 21.

Specifically, to ensure a 30-minute fire resistance, the mullion 21 is constructed with two or more layers of aluminum plates that are 2 mm or more thick, resulting in a layer thickness of 5 mm, and to ensure a 1-hour fire resistance, the mullion 21 is constructed with four or more layers of aluminum plates that are 2 mm or more thick, resulting in a layer thickness of 10 mm.

However, because the aluminum material that makes up the mullions 21 has a high thermal conductivity, even if the number of layers and thickness of the aluminum material that makes up the mullions 21 are increased as described above, the heat of a fire that breaks out outdoors will be transferred to the interior through the mullions 21, and the exterior wall will not be able to maintain the temperature inside at a certain level.

In response, the Ministry of Land, Infrastructure, Transport and Tourism issued technical advice in 2009, making it mandatory to provide fireproofing on the indoor side of the mullions 21 in the spandrel panel section. Based on this technical advice, currently, methods are used to provide fireproofing on the indoor side of the mullions 21 in the spandrel panel section by spraying rock wool on them.

However, spraying rock wool in a narrow space can result in reduced work efficiency and less stable construction quality.
For example, when spraying rock wool onto the indoor side of the mullions 21 in the spandrel panel section, the rock wool can be easily sprayed above the floor slab 10 because there are no obstacles around the mullions 21 and the space is open. In addition, the rock wool can be pressed against the mullions 21 with a trowel without any problems.

However, below the floor slab 10, the work space is narrow due to the presence of steel beams 70, such as H-beams, arranged on the underside of the floor slab 10. If rock wool is sprayed in such a narrow work space, there is a risk of the rock wool sticking to places where it is not needed, and careful curing is required to prevent unnecessary rock wool from sticking, making the work time and effort-intensive.

In addition, when pressing the rock wool against the uprights 21 with a trowel, problems can arise when working in a narrow space, such as not being able to reach between the steel beams 70 and the uprights 21. In this case, the sprayed rock wool cannot completely fireproof the interior side of the uprights 21, which leads to a decrease in the stability of the construction quality.

As a countermeasure to the wet construction method of spraying rock wool in such narrow spaces, a fireproof board support structure using a dry construction method has been developed in which metal fittings are attached to both sides of a U-shaped fireproof board to fasten the U-shaped fireproof board to the structure with bolts or the like (for example, Patent Document 3).

FIG. 19 is a plan cross-sectional view showing a fireproof board support structure for a metal curtain wall.
As shown in Figure 19, the fireproof board support structure 60 of a metal curtain wall disclosed in Patent Document 3 comprises a fireproof panel 24 arranged on both the left and right sides of an aluminum upright 21, fixing brackets 23 for supporting the fireproof panel 24 to a structural body, a upright fireproof panel 61 that covers the upright 21 from the inside of the room and is structurally separated from the fireproof panel 24, and a pair of upper brackets 62 and a pair of lower brackets 63 that support the upright fireproof panel 61 to a steel beam material 70.

According to the fireproof board support structure 60 for a metal curtain wall disclosed in Patent Document 3, fireproof panels 24 are arranged on both the left and right sides of the mullions 21. The mullions 21 are covered from the inside of the room by fireproof panels 61 for the mullions. This reduces the temperature rise of the mullions 21 in the event of a fire, and thus suppresses melting of the mullions 21.

The fireproof panel 24 is supported on the structure by the fixing brackets 23. On the other hand, the mullion fireproof panel 61 is structurally separated from the fireproof panel 24 and is supported on the structure by a pair of upper brackets 62 and a pair of lower brackets 63 that are separate from the fixing brackets 23.

As a result, even if the fire-resistant panels 24 on both the left and right sides of the mullion 21 exhibit different deformation behaviors, the fire-resistant panels 61 for the mullion are prevented from following the deformation of these fire-resistant metal boards for the curtain wall. Therefore, damage to the fire-resistant panels 61 for the mullion are prevented.

JP 2002-242334 A JP 2010-261232 A

However, in the fireproof board support structure 60 for metal curtain walls disclosed in Patent Document 3, the upright fireproof panel 61 is fixed to the steel beam material 70 via a pair of upper brackets 62 and a pair of lower brackets 63, which requires installation work to be done in a narrow space, resulting in a significant decrease in workability.

Specifically, since the upper bracket 62 is attached to the top of the steel beam 70, if the steel beam 70 and the upright 21 come close to each other, the lower flange of the steel beam 70 becomes a barrier, making it difficult to attach the upper bracket 62 to the top of the steel beam 70 with bolts or the like.

In addition, since the lower bracket 63 is attached to the lower part of the steel beam 70, the lower flange of the steel beam 70 also creates a blind spot for the bolt tightening position, making it difficult to fasten the lower bracket 63.

In addition, not only will the fastening work of the upper bracket 62 and the lower bracket 63 be difficult for the reasons mentioned above, but if the fastening work is incomplete, there is a possibility that the interior side of the mullion 21 will not be completely fireproofed.

If a fire breaks out when the interior side of the mullions 21 in the spandrel panel section is not completely fireproofed, the fire can spread through these gaps to the floors above and below, making the gaps a weak point in terms of fire resistance.

In addition, if a fire breaks out outside and heat is transmitted indoors through the incompletely fire-resistant covered mullions 21, there is a risk that the heat from the fire will be transmitted to the steel beams 70 supporting the floor slab 10. If the heat from the fire is transmitted to the steel beams 70, which are sensitive to heat, the steel beams 70 will easily deform.

The steel beams 70 are structural members that form the framework that supports the structure of the building. If the steel beams 70 are deformed, they will no longer be able to support the floor slabs 10 and the building that together with the steel beams 70 make up the structure, which could lead to the collapse of the entire building, creating great danger.

The present invention was made in consideration of these points, and aims to provide a fireproof insulation device, a fireproof insulation method, and a fireproof insulation structure that can easily provide fireproof coating on the indoor side of the mullions in the spandrel panel section.

In order to solve the above problems, the present invention provides a fireproof insulation device that provides fireproof insulation in the spandrels of a building made of metal curtain walls with fireproof panels attached between the uprights, characterized in that it is equipped with fireproof insulation material that is formed in advance below the floor slab of the building to cover the exposed parts of the uprights on the indoor side of the building, a shape retention part for maintaining the covering shape of the fireproof insulation material, and a support means for supporting the fireproof insulation material while covering the exposed parts to prevent it from falling.

As a result, the fireproof insulation material is formed in a shape that covers the exposed parts of the uprights on the indoor side of the building below the floor slab that the building already has, and the shape retention part maintains the covering shape of the fireproof insulation material, while the support means supports the fireproof insulation material while covering the exposed parts to prevent it from falling.

The present invention also provides a fireproof insulation method for providing fireproof insulation to the spandrels of a building made of a metal curtain wall with fireproof panels attached between the mullions, which comprises the steps of forming a fireproof insulation material in a shape that covers the exposed parts of the mullions on the indoor side of the building below the floor slab of the building, maintaining the covering shape of the fireproof insulation material with a shape-retaining part, and supporting the fireproof insulation material with a supporting means to prevent it from falling while covering the exposed parts.

As a result, the fireproof insulation material is formed in a shape that covers the exposed parts of the uprights on the indoor side of the building below the floor slab that the building already has, and the shape retention part maintains the covering shape of the fireproof insulation material, while the support means supports the fireproof insulation material while covering the exposed parts to prevent it from falling.

The present invention also provides a fireproof and insulated structure that provides fireproof insulation in the spandrels of a building made of a metal curtain wall with fireproof panels attached between the mullions, characterized in that it comprises a fireproof insulation material that is formed in advance below the floor slab of the building to cover the exposed parts of the mullions on the indoor side of the building, a shape retention part for retaining the covering shape of the fireproof insulation material, and a support means for supporting the fireproof insulation material while covering the exposed parts to prevent it from falling.

As a result, the fireproof insulation material is formed in a shape that covers the exposed parts of the uprights on the indoor side of the building below the floor slab that the building already has, and the shape retention part maintains the covering shape of the fireproof insulation material, while the support means supports the fireproof insulation material while covering the exposed parts to prevent it from falling.

According to the fireproof insulation device, fireproof insulation method, and fireproof insulation structure of the present invention, the fireproof insulation material is formed in a shape that covers the exposed parts of the uprights on the indoor side of the building below the floor slab of the building, the shape retention part maintains the covering shape of the fireproof insulation material, and the support means supports the fireproof insulation material while covering the exposed parts to prevent it from falling, so that the indoor side of the uprights in the spandrel panel part can be completely and easily covered, and a fireproof insulation structure can be easily obtained.

1A and 1B are vertical and horizontal cross-sectional views showing a fireproof structure in which a fireproof and insulating device is installed in a knock-down type metal curtain wall structure according to a first embodiment. 1A to 1C are a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing details of a fireproof and insulating device in a knock-down method according to a first embodiment. 1 is a perspective view showing a fireproof structure in which a fireproof and insulating device according to a first embodiment is installed. 13A and 13B are vertical and horizontal cross-sectional views showing a fireproof structure in which a fireproof and insulating device is installed in a knock-down type metal curtain wall structure according to a second embodiment. 13A to 13C are a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing details of a fireproof and insulating device in a knock-down method according to a second embodiment. FIG. 11 is a perspective view showing a fireproof structure in which a fireproof and insulating device according to a second embodiment is installed. 1A to 1C are front, rear, left and right side views, a plan view and a bottom view showing one example of a structure of a fireproof insulation material supported by a support bracket. 1A to 1C are front, rear, left and right side views, a plan view and a bottom view showing one example of a structure of a fireproof insulation material supported by a support bracket. 1A to 1C are front, rear, left and right side views, a plan view and a bottom view showing one example of a structure of a fireproof insulation material supported by a support bracket. 1A to 1C are front, rear, left and right side views, a plan view and a bottom view showing one example of a structure of a fireproof insulation material supported by a support bracket. 1A to 1C are front, rear, left and right side views, a plan view and a bottom view showing one example of a structure of a fireproof insulation material supported by a support bracket. 1A and 1B are a rear view and a plan view showing one example of forming a fireproof insulating material in a U-shape. This is a rear view, a plan view, and a left side view showing one example of installation in which flexible, plate-shaped fire-resistant insulation is installed around the periphery of a mullion. FIG. 13 is a perspective view showing an example of a state in which a shape-retaining portion is fixed to a fireproof material. This is a front view, a top view, and a side cross-sectional view showing an example of the structure of a mullion-type metal curtain wall. This is a plan cross-sectional view showing details of the spandrel panel portion of a mullion-type metal curtain wall.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First Embodiment
FIG. 1 is a vertical sectional view and a horizontal sectional view showing a fireproof structure in which a fireproof and thermal insulating device is installed in a knock-down type metal curtain wall structure according to a first embodiment.

As shown in FIG. 1, the wall material 20, particularly the fireproof panels 24 in the spandrel section, are supported by being fitted into the vertically erected uprights 21, and between the floor slab 10 supported by the steel beams 70 and the fireproof panels 24, the indoor side of the uprights 21 is exposed from the fireproof panels 24 to the indoor side.

The fireproof and insulating device 100 comprises a fireproof and insulating fireproof insulation material 110, and a support bracket 120 for supporting the fireproof insulation material 110 and fixing it to a fireproof panel 24 above the floor slab 10, and the fireproof insulation material 110 is fixed so as to cover the mullion 21 exposed to the indoor side on the underside of the floor slab 10.

The fireproof insulation material 110 is made elastic by bundling or laminating inorganic fibers such as ceramic fibers, rock wool, glass wool, and calcium silicate, and by covering the periphery of the mullions 21 exposed to the indoor side on the underside of the floor slab 10, a complete fireproof compartment can be created.

In addition, the uprights 21 and the steel beams 70 are separated by fireproof insulation 110, so that even if a fire occurs outdoors, the temperature rise caused by the fire outdoors can be prevented from being transmitted indoors, preventing deformation of the steel beams 70 due to heat.

In Figure 1, the fireproof insulation 110 is described as covering the uprights 21 into which a knock-down metal curtain wall is fitted, but the size of the fireproof insulation 110 can be formed in any shape depending on the shape of the uprights 21 as long as it can cover the exposed uprights 21, and the support brackets 120 for supporting the fireproof insulation 110 can also be formed in any shape accordingly.
The fireproof insulation material 110 is formed in a shape that can adequately cover the mullion 21 exposed on the indoor side between the fireproof panel 24 and the steel beam material 70 on the underside of the floor slab 10.

Below, we will explain an example in which a structure in which a vertically-installed (height direction of the wall material 20) mullions 21 are connected to fireproof panels 24 and protrude 40 mm in width (width direction of the wall material 20) and 60 mm in thickness (thickness direction of the wall material 20) on the indoor side is covered with fireproof insulation material 110. Note that the dimensions shown here are merely an example and can be changed as appropriate depending on the design conditions of the building.

As shown in the A-A' cross-sectional view of Figure 1, the fireproof insulation material 110 is formed as a rectangular parallelepiped with a width of 120 mm and a thickness of 100 mm, and a cutout portion K with a width of 40 mm and a thickness of 60 mm into which a mullion 21 is inserted is formed along the height direction on the outdoor side of the width direction side of the fireproof insulation material 110, and the cross section is formed in a U-shape.

The fireproof insulation material 110 is formed between the fireproof panel 24 and a steel beam material 70, such as an H-beam, arranged on the underside of the floor slab 10, at a height that allows it to cover the exposed mullion 21 between the lower end of the fireproof panel 24 and the underside of the floor slab 10.

Specifically, if the steel beam material 70 is an H-beam with a height of 150 mm, the height of the fireproof panel 24 is 835 mm, and the height from the upper end of the fireproof panel 24 to the underside of the floor slab 10 is 337.5 mm, the height of the fireproof insulation material 110 is formed to be 497.5 mm, which is the same height as the height from the underside of the floor slab 10 to the lower end of the fireproof panel 24.

This allows the fireproof insulation material 110 to cover the exposed portion of the mullion 21 on the indoor side. In addition, the fireproof insulation material 110 is interposed between the fireproof panel 24, which is close to the floor slab 10, and the steel beam material 70, so that the fireproof insulation material 110 can completely block the outdoor area from the steel beam material 70.

As a result, even if a fire breaks out outdoors, heat from outdoors will not be directly transferred to the steel beams 70, and even if the temperature rises due to an outdoor fire, deformation of the steel beams 70, which are the structural members supporting the building within the building, can be prevented.

In addition, by setting the height of the fireproof insulation material 110 to the height from the underside of the floor slab 10 of the fireproof panel 24 to the lower end of the fireproof panel 24, the fireproof insulation material 110 will not protrude from the fireproof panel 24.

In other words, even if only the glass window 25 is connected to the underside of the fireproof panel 24, the fireproof insulation material 110 fits within the height of the fireproof panel 24, so the fireproof insulation material 110 is not exposed to the outdoors through the glass window 25 from the surrounding area, which is aesthetically pleasing.

In this embodiment, an example has been described in which the fireproof insulation material 110 is formed into a cube with a cutout portion K, but by combining three plate-shaped bodies, it is also possible to form the horizontal cross section into a U-shape and form the cutout portion K into which the upright 21 is inserted.

In addition, the periphery of the fireproof insulation material 110 can be provided with an outer covering material, for example made of polyethylene film, which completely covers the surface of the fireproof insulation material 110 in a fire-resistant manner, thereby protecting the fireproof insulation material 110 from moisture such as rainwater that may seep in from the outside.

The outer covering material that covers the periphery of the fireproof insulation material 110 can be made of a moisture-proof material such as aluminum sheet material. Providing the outer covering material with moisture-proof properties can block moisture from flowing in from the outside of the building to the inside, thereby preventing condensation and frost from forming on the fireproof insulation material 110.

The support bracket 120 includes a shape retaining portion 121 for covering the fireproof insulation material 110 from the indoor side and clamping the fireproof insulation material 110 to retain the shape of the fireproof insulation material 110, a horizontal support edge 122 extending horizontally from the shape retaining portion 121 and having a surface that contacts the fireproof panel 24, and a vertical support edge 123 extending vertically from the horizontal support edge 122 and having a surface that contacts the fireproof panel 24.

The shape-retaining portion 121 is made by bending a metal plate so that its horizontal cross section is U-shaped. The opening of the shape-retaining portion 121 and the opening of the fireproof insulation material 110 are oriented in the same direction, and the fireproof insulation material 110 is inserted and fixed into place through the opening of the shape-retaining portion 121.

The fireproof insulation material 110 and the shape-retaining part 121 can be fixed in any manner, such as by placing adhesive or double-sided tape between the fireproof insulation material 110 and the shape-retaining part 121, or by drilling a hole in any location in the shape-retaining part 121 and fixing the fireproof insulation material 110 and the shape-retaining part 121 through the hole with a screw or bolt.

By covering and clamping the elastic fireproof insulation material 110 with this shape-retaining portion 121, the shape of the fireproof insulation material 110 can be maintained, so that the upright 21 can be securely covered and clamped with the fireproof insulation material 110 formed to the desired size.

In addition, the shape retention portion 121 retains the fireproof insulation material 110 in a shape that matches the shape of the upright 21, so that the fireproof insulation material 110F can be easily attached to the desired location along the upright 21 from the lower floor even in a small work space.

In addition, in order to prevent deformation of the fireproof insulation material 110, the shape-retaining portion 121A, which is simply the shape-retaining portion 121 formed in an appropriate U-shape according to the height of the fireproof insulation material 110, can be provided at any height position of the fireproof insulation material 110. This makes it possible to prevent deformation such as widening of the opening of the fireproof insulation material 110.

In this example, the shape-retaining portion 121A and the shape-retaining portion 121 are formed separately, but the shape-retaining portion 121 and the shape-retaining portion 121A may be formed from a single piece of metal and connected by a metal edge along the side of the fire-resistant insulation material 110 opposite the opening.

The horizontal support edges 122 are metal edges that extend horizontally from both ends of the opening of the shape-retaining part 121 and are bent at right angles to both sides outward by a predetermined length from both ends of the opening of the shape-retaining part 121.

The horizontal support edge 122 is connected to the fixing brackets 23 that secure the floor slab 10 to the mullions 21 or fireproof panels 24 provided on the top surface of the floor slab 10, and serves to adjust the position horizontally so that it can be fixed to the floor slab 10, which is the structure that supports the building.

The vertical support edge 123 is a metal edge that contacts the fireproof panel 24 that is extended vertically at a position where it can be connected to the fixing bracket 23 by the horizontal support edge 122, and is inserted from the underside of the interlayer gap G1, and is formed to a length that allows the upper end of the vertical support edge 123 to extend sufficiently above the top surface of the floor slab 10.

The upper part of the vertical support edge 123 has a bolt hole, and is fastened by a fastener such as a bolt 124 to a fixing bracket 23 that fixes the upright 21 or the fireproof panel 24 to the floor slab 10. This allows the fireproof insulation material 110 to be fixed in place, covering the upright 21 exposed between the lower end of the fireproof panel 24 and the underside of the floor slab 10, without falling off the floor slab 10, which is the structure that supports the building.

Specifically, the upper part of the vertical support edge 123 is sandwiched between the fixing bracket 23 and the upright 21 or the fireproof panel 24, and is fastened and fixed by a bolt 124 for fixing the fixing bracket 23 to the upright 21 or the fireproof panel 24.

The fixing bracket 23 is fixed to the floor slab 10, which is a structural body that supports the building, so the vertical support edge 123 is fixed to the floor slab 10 via the fixing bracket 23. In other words, the fireproof insulation material 110 is fixed to the structural body, the floor slab 10, by the support bracket 120.

The fixing bracket 23 referred to here is not only for fixing the floor slab 10, which is a structure supporting the building, to the fireproof panel 24, but can also include, for example, auxiliary brackets for fixing the fixing bracket 23 to the fireproof panel 24. In other words, the support bracket 120 can also support the fireproof insulation material 110 by fastening it to the auxiliary bracket for fixing the fixing bracket 23 to the fireproof panel 24 with a fastener such as a bolt 124.

In the above example, the fireproof insulation material 110 is supported by the support bracket 120, and the support bracket 120 is fixed to the fireproof panel 24 with a fastener. In addition to being supported and fixed by the support bracket 120, the fireproof insulation material 110 and the upright 21 can also be securely bonded to each other by using, for example, adhesive or double-sided tape at the contact point between the fireproof insulation material 110 and the upright 21.

In addition, in this embodiment, the horizontal support edge 122 is formed between the shape retention part 121 and the vertical support edge 123, but if the support bracket 120 can be fixed to the fixing bracket 23, the horizontal support edge 122 can be omitted and the vertical support edge 123 can be extended from the shape retention part 121.

In FIG. 1, the fireproof insulation material 110 is described as covering the mullions 21 into which a knock-down type metal curtain wall is fitted, but the shape of the fireproof insulation material 110 can be formed into any desired shape depending on the shape of the mullions 21. For example, when covering the mullions 21 into which a unit type metal curtain wall is fitted, the fireproof insulation material 110 can be formed to match the shape of the unit type mullions 21.

FIG. 2 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing details of the fireproof and insulating device in the knock-down method according to the first embodiment.
As shown in FIG. 2, the fireproof insulation device 100 comprises a fireproof insulation material 110 and a support bracket 120 for supporting the fireproof insulation material 110 and fixing it to the fireproof panel 24, and the support bracket 120 comprises a shape retention portion 121, two horizontal support edges 122, and two vertical support edges 123.

It is desirable to make the length of the two sides in the thickness direction of the shape-retaining portion 121 and the shape-retaining portion 121A shorter than the thickness of the fireproof insulation material 110. If the length of the two sides in the thickness direction of the shape-retaining portion 121 and the shape-retaining portion 121A is equal to the thickness of the fireproof insulation material 110, or if the length of the two sides in the thickness direction of the shape-retaining portion 121 and the shape-retaining portion 121A is greater than or equal to the thickness of the fireproof insulation material 110, when the fireproof insulation device 100 is pressed against the upright 21, the two sides in the thickness direction of the shape-retaining portion 121 and the shape-retaining portion 121A may interfere with the fireproof panel 24 first, resulting in a gap between the fireproof panel 24 and the fireproof insulation device 100.

Therefore, by making the thickness of the two sides of the shape-retaining portion 121 and the shape-retaining portion 121A in the thickness direction shorter than the thickness of the fireproof insulation material 110, a fireproof structure can be formed without creating a gap between the fireproof panel 24 and the fireproof insulation device 100 even when the fireproof insulation device 100 is pressed against the upright 21.

FIG. 3 is a perspective view showing a fireproof structure in which the fireproof and thermal insulation device according to the first embodiment is installed.
As shown in Fig. 3, in the fireproof and thermal insulation device 100, a worker on a lower floor first inserts the fireproof insulation material 110 from the underside of the floor slab 10 along the uprights 21 toward the top of the floor slab 10. Next, the upper end of the vertical support edge 123 is inserted between the fixing bracket 23 and the fireproof panel 24 on the upper surface direction of the floor slab 10 through the interlayer gap G1, and with the fireproof insulation material 110 abutting the underside of the floor slab 10, a worker on an upper floor fixes it to the fixing bracket 23 and the fireproof panel 24 with fasteners such as bolts 124 through bolt holes provided at the top of the vertical support edge 123.

At this time, the bolt holes provided at the top of the vertical support edge 123 are located above the top surface of the floor slab 10 due to the length of the vertical support edge 123, so workers on the upper floor can easily secure the fireproof insulation device 100 to the fixing brackets 23 and the fireproof panel 24.

In addition, since the horizontal support edge 122 is extended horizontally so that the vertical support edge 123 is located at the position of the bolt 124 that fixes the fixing bracket 23 and the fire-resistant panel 24, the fire-resistant insulation device 100 can be fixed to the fixing bracket 23 that connects the floor slab 10 and the fire-resistant panel 24.
Furthermore, since there are no obstacles such as steel beams 70 located above the floor slab 10, fireproofing material such as rock wool can be easily sprayed onto the area to provide a fireproof structure.

When installing the fireproof insulation device 100 with a small number of workers, the workers can first insert the fireproof insulation device 100 on the lower floor, and with the fireproof insulation material 110 in contact with the underside of the floor slab 10, they can temporarily fix the fireproof insulation device 100 in the desired position by driving screws or nails horizontally from the closed side of the fireproof insulation material 110 toward the upright 21, and then, after the workers move to the upper floor, they can fix the support member to the structure supporting the building.

Second Embodiment
Next, a second embodiment of the present invention will be described. The fireproof and heat-insulating device of this embodiment has a configuration similar to that of the first embodiment, except for the shape of the support brackets and the support method. Therefore, the same components as those of the first embodiment are given the same reference numerals and the description thereof will be omitted as appropriate.

FIG. 4 is a vertical sectional view and a horizontal sectional view showing a fireproof structure in which a fireproof and thermal insulating device is installed in a knock-down type metal curtain wall structure according to the second embodiment.
The fireproof insulation device 100 comprises a fireproof insulation material 110 and a support bracket 120 for supporting the fireproof insulation material 110 and fixing it to a fireproof panel 24, and is fixed so as to cover the uprights 21 on the underside of the floor slab 10 between the fireproof panel 24 and the steel beam material 70.

The support bracket 120 includes a shape retention portion 121, a horizontal support edge 122, a vertical support edge 123, and an upper surface support edge 125 that is bent horizontally from the vertical support edge 123 toward the floor slab 10 and is positioned on the upper surface of the floor slab 10.

The upper support edge 125 is formed by bending the vertical support edge 123 horizontally toward the floor slab 10. The vertical support edge 123 is bent at a position where no gap is formed between the fireproof insulation material 110 and the underside of the floor slab 10, with the underside of the previously bent upper support edge 125 in contact with the upper surface of the floor slab 10.

Depending on the thickness of the floor slab 10, the fireproof insulation device 100 can be inserted from under the floor slab 10 on-site, and then the vertical support edge 123 can be bent toward the floor slab 10 at the corner of the upper end of the floor slab 10 with the fireproof insulation material 110 abutting the underside of the floor slab 10 to form the upper support edge 125.

The upper support edge 125 can be securely attached to the floor slab 10 by placing adhesive or double-sided tape between the upper support edge 125 and the upper surface of the floor slab 10, or the upper support edge 125 can be fixed to the floor slab 10 via a fastening bolt or the like in a bolt hole (not shown).

In this embodiment, a fireproof structure in which the fireproof insulation device 100 is installed in a knock-down metal curtain wall structure has been described as an example, but by changing the dimensions of the fireproof insulation material 110 and the support bracket 120 of the fireproof insulation device 100 in this embodiment, the fireproof insulation device 100 can also be installed in a unit-type metal curtain wall structure.

FIG. 5 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing details of a fireproof and insulating device in a knock-down system according to the second embodiment.
5, the fireproof insulation device 100 includes a fireproof insulation material 110 and a support bracket 120 for supporting the fireproof insulation material 110 and fixing it to the fireproof panel 24, and the support bracket 120 includes a shape retaining portion 121, two horizontal support edges 122, two vertical support edges 123, and two upper support edges 125. The length of the upper support edges 125 can be set to a length that is well balanced depending on the weight of the fireproof insulation material 110 to be supported.

FIG. 6 is a perspective view showing a fireproof structure in which a fireproof and thermal insulating device according to the second embodiment is installed.
As shown in Figure 6, the fireproof and insulation device 100 has its vertical support edges 123 bent in advance to form its upper support edges 125. First, a worker on the lower floor inserts the two upper support edges 125 from the underside of the floor slab 10 upward through the interlayer gap G1, with the fixing bracket 23 interposed between them. The rear end of the fireproof and insulation device 100 is then rotated from the floor slab 10 toward the fireproof panel 24, centered on the bent part between the upper support edges 125 and the vertical support edges 123, while inserting the cutout portion K of the fireproof insulation material 110 so that it fits into the upright 21.

In addition, in the fireproof insulation device 100, in which the upper support edge 125 is formed by bending the vertical support edge 123 later, a worker on the lower floor first inserts the fireproof insulation material 110 from the underside of the floor slab 10 along the uprights 21 toward the top of the floor slab 10.

Next, the upper end of the vertical support edge 123 is inserted through the interlayer gap G1 toward the upper surface of the floor slab 10, and with the fireproof insulation material 110 in contact with the underside of the floor slab 10, a worker on the upper floor bends the vertical support edge 123 toward the floor slab 10 at the corner of the upper end of the floor slab 10 to form the upper surface support edge 125 and secure the fireproof insulation device 100.

As described above, the fireproof insulation material 110 is fixed and supported by the support bracket 120 to the framework structure that supports the structure of the building. The shape of the support bracket 120 can be other shapes as long as it is fixed to the structure. Next, the shape and formation method of the fireproof insulation material 110 that is fixed and supported by the support bracket 120 to the framework structure that supports the structure of the building will be described.

FIG. 7 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing one example of a structure of a fireproof insulating material supported by a support bracket.
As shown in Figure 7, the fireproof insulation material 110 is composed of three plate-shaped fireproof materials 111, 112, and 113 assembled in a U-shape by fixing bolts 114 and fixing nuts 115, and has a cutout portion K into which the upright 21 is fitted.

Specifically, plate-shaped fireproof materials 112 and 113 are arranged along the longitudinal direction of plate-shaped fireproof material 111 on both sides of plate-shaped fireproof material 111 that is in contact with the longitudinal direction of upright 21 and the side surface on the floor slab 10 side.

The plate-shaped fire-resistant materials 112 and 113 are arranged so that they are perpendicular to the short side direction of the plate-shaped fire-resistant material 111 from both side surfaces of the plate-shaped fire-resistant material 111. In this way, a U-shaped body is formed by the three plate-shaped fire-resistant materials 111, 112, and 113.

The three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are fixed in the U-shape by fixing bolts 114. Specifically, fixing bolts 114 are inserted into through holes formed in advance from the side of plate-shaped fireproof material 112 or 113 arranged on both sides of plate-shaped fireproof material 111 toward the short side of plate-shaped fireproof material 111 so as to penetrate plate-shaped fireproof materials 111, 112, and 113, and fixing nuts 115 are tightened, so that fireproof materials 111, 112, and 113 are assembled and fixed in the U-shape.

The fixing bolts 114 and fixing nuts 115 are provided at multiple locations at arbitrary intervals depending on the length of the fireproof insulation material 110. Furthermore, by attaching a shape retention portion 121 formed by a support bracket 120 formed in a U-shape to the periphery of the fireproof insulation material 110 with the fixing bolts 114 and fixing nuts 115, the fireproof insulation material 110 can be supported by the support bracket 120 while stabilizing the assembled U-shape. Note that the horizontal support edge 122 and vertical support edge 123 are omitted here and are not shown, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 8 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing one example of a structure of a fireproof insulating material supported by a support bracket.
As shown in FIG. 8, the fireproof insulation material 110 is assembled by bonding three plate-shaped fireproof materials 111, 112, and 113 into a U-shape with adhesive 116, and a cutout portion K is formed into which the upright 21 is fitted.

Specifically, plate-shaped fireproof materials 112 and 113 are arranged along the longitudinal direction of plate-shaped fireproof material 111 on both sides of plate-shaped fireproof material 111 that is in contact with the longitudinal direction of upright 21 and the side surface on the floor slab 10 side.

The plate-shaped fire-resistant materials 112 and 113 are arranged so that they are perpendicular to the short side direction of the plate-shaped fire-resistant material 111 from both side surfaces of the plate-shaped fire-resistant material 111. In this way, a U-shaped body is formed by the three plate-shaped fire-resistant materials 111, 112, and 113.

The three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are bonded and fixed in the U-shape with adhesive 116. For example, an inorganic adhesive whose main ingredient is sodium silicate may be used as adhesive 116. Inorganic adhesives whose main ingredient is sodium silicate have appropriate viscosity and fire resistance, making them a preferred material for bonding the plate-shaped fireproof materials 111, 112, and 113. Alternatively, an organic adhesive or a silicon-based adhesive may be used as adhesive 116.

The shape retention portion 121 of the support bracket 120 formed in a U-shape is attached to the periphery of the fireproof insulation material 110 assembled in a U-shape with a fixing bolt 114 and a fixing nut 115, so that the fireproof insulation material 110 can be supported by the support bracket 120 while stabilizing the assembled U-shape. Note that the horizontal support edge 122 and vertical support edge 123 are omitted and not shown here, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 9 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing one example of a structure of a fireproof insulating material supported by a support bracket.
As shown in Figure 9, the fireproof insulation material 110 is assembled by fixing three plate-shaped fireproof materials 111, 112, and 113 to the outer peripheral surface of a U-shaped plate 117, and a cutout portion K is formed into which the upright 21 is fitted.

Specifically, first, the uprights 21 are formed in a shape that covers the portion of the wall material 20 that protrudes toward the floor slab 10 along the longitudinal direction, and a U-shaped plate 117 is formed by bending, for example, a metal plate into a U-shape.

Three plate-shaped fireproof materials 111, 112, and 113 are combined on the outer peripheral surface of the U-shaped plate 117 and arranged so as to be in close contact with the outer peripheral surface of the U-shaped plate 117.

Specifically, plate-shaped fireproof material 111 is placed on the outside of the side opposite the opening side of U-shaped plate 117, and plate-shaped fireproof materials 112 and 113 are placed so as to sandwich the opening side of U-shaped plate 117 and to be in close contact with both side surfaces and the side of plate-shaped fireproof material 111. In this way, a U-shaped body is formed by the three plate-shaped fireproof materials 111, 112, and 113.

The three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are fixed to the U-shaped plate 117 by a number of welding pins 118. The welding pins 118 are rods welded to the U-shaped plate 117 by welding such as stud welding.

Specifically, the welding pin 118 is inserted from any position on the outside of the three plate-shaped fire-resistant materials 111, 112, and 113 toward the U-shaped plate 117, and stud-welded with the welding pin 118 and the U-shaped plate 117 in contact.

By forming one end of the welding pin 118 into a flat head, the plate-shaped fireproof materials 111, 112, and 113 fit between the flat head and the tip of the welding pin 118 welded to the U-shaped plate 117, and the plate-shaped fireproof materials 111, 112, and 113 are fixed to the U-shaped plate 117.

The periphery of the fireproof insulation material 110 assembled in a U-shape can be attached to the fireproof insulation material 110 by a welding pin 118 using a support bracket 120 formed in a U-shape to form a shape retention portion 121 (not shown here), so that the fireproof insulation material 110 can be supported by the support bracket 120 while stabilizing the assembled U-shape. Note that the shape retention portion 121, horizontal support edge 122, vertical support edge 123, etc. are omitted here and are not shown, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 10 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing one example of a structure of a fireproof insulating material supported by a support bracket.
As shown in Figure 10, the fireproof insulation material 110 is assembled by fixing three plate-shaped fireproof materials 111, 112, and 113 to the inner peripheral surface of a U-shaped plate 119, and a cutout portion K is formed into which the upright 21 is fitted.

Specifically, plate-shaped fireproof materials 112 and 113 are arranged along the longitudinal direction of plate-shaped fireproof material 111 on both sides of plate-shaped fireproof material 111 that is in contact with the longitudinal direction of upright 21 and the side surface on the floor slab 10 side.

The plate-shaped fire-resistant materials 112 and 113 are arranged so that they are perpendicular to the short side direction of the plate-shaped fire-resistant material 111 from both side surfaces of the plate-shaped fire-resistant material 111. In this way, a U-shaped body is formed by the three plate-shaped fire-resistant materials 111, 112, and 113.

A U-shaped plate 119, for example a metal plate bent into a U-shape, is arranged on the outside of the three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape so as to cover and adhere closely to the three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape.

The three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are fixed to the U-shaped plate 119 by a number of welding pins 118. The welding pins 118 are rods welded to the U-shaped plate 117 by welding such as stud welding.

Specifically, the welding pin 118 is inserted from any position on the inside of the three plate-shaped fire-resistant materials 111, 112, and 113 toward the U-shaped plate 119, and the welding pin 118 and the U-shaped plate 119 are stud-welded in a state of contact.

By forming one end of the welding pin 118 into a flat head, the plate-shaped fireproof materials 111, 112, and 113 fit between the flat head and the tip of the welding pin 118 welded to the U-shaped plate 119, and the plate-shaped fireproof materials 111, 112, and 113 are fixed to the U-shaped plate 119.

By fixing a U-shaped plate 119 to the periphery of the fireproof insulation material 110 assembled in a U-shape, the U-shaped plate 119 can act as a shape retaining portion 121, and the fireproof insulation material 110 can be supported by the support bracket 120 while stabilizing the assembled U-shape. Note that the shape retaining portion 121, horizontal support edge 122, vertical support edge 123, etc. are omitted here and are not shown, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 11 is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view showing one example of a structure of a fireproof insulating material supported by a support bracket.
As shown in Figure 11, the fire-resistant insulation material 110 is assembled by fixing three plate-shaped fire-resistant materials 111, 112, and 113 to the inner peripheral surface of a U-shaped board assembled using gypsum boards 110A, 110B, and 110C, and a cutout portion K is formed into which the upright 21 is fitted.

Specifically, plate-shaped fireproof materials 112 and 113 are arranged along the longitudinal direction of plate-shaped fireproof material 111 on both sides of plate-shaped fireproof material 111 that is in contact with the longitudinal direction of upright 21 and the side surface on the floor slab 10 side.

The plate-shaped fire-resistant materials 112 and 113 are arranged so that they are perpendicular to the short side direction of the plate-shaped fire-resistant material 111 from both side surfaces of the plate-shaped fire-resistant material 111. In this way, a U-shaped body is formed by the three plate-shaped fire-resistant materials 111, 112, and 113.

The three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are covered from the outside by gypsum boards 110A, 110B, and 110C arranged in a U-shape so as to closely cover the three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape.

Three plate-shaped fireproof materials 111, 112, and 113 arranged in a U-shape are fixed to gypsum boards 110A, 110B, and 110C assembled in a U-shape with multiple screws 110D.

Specifically, the three plate-shaped fireproof materials 111, 112, and 113 are fixed in place by screwing screws 110D into the gypsum boards 110A, 110B, and 110C assembled in a U-shape from any position on the inside.

The gypsum boards 110A, 110B, and 110C, which are also assembled in a U-shape, are fixed to the periphery of the fireproof insulation material 110, which is assembled in a U-shape, so that the U-shaped plate 119 can act as a shape retaining part 121, and the support bracket 120 can support the fireproof insulation material 110 while stabilizing the assembled U-shape.

Furthermore, by fixing fire-resistant gypsum boards 110A, 110B, and 110C to the peripheral surface of the fire-resistant insulation material 110, the fire resistance of the fire-resistant insulation device 100 can be further improved. Note that the shape retention portion 121, horizontal support edge 122, vertical support edge 123, etc. are omitted and not shown here, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 12 is a rear view and a plan view showing one example of a fireproof insulating material formed in a U-shape.
Figures 7 to 11 show an example of forming a U-shape by assembling plate-shaped fire-resistant material, while Figure 12 describes an example of forming a U-shape by bending a flexible plate-shaped fire-resistant insulation material 110E.

The fireproof insulation material 110E is a fireproof material that is flexible enough to withstand bending. A V-shaped groove is formed along the longitudinal direction of the fireproof insulation material 110E in the portion that comes into contact with the inner corner when the fireproof insulation material 110E is bent into a U-shape.

As a result, even if the fireproof insulation material 110E is bent into a U-shape, the inner corners do not become overcrowded, and the inner corners are formed at right angles. As a result, the fireproof insulation material 110E forms a U-shape without deformation, and the upright 21 can be fitted correctly inside.

In this way, by forming the fireproof insulation material 110 by bending one flexible plate-shaped fireproof insulation material 110E into a U-shape, the process of assembling and fixing each plate-shaped fireproof material is omitted compared to the process of assembling three plates-shaped fireproof materials, and therefore the manufacturing process can be shortened.

A single flexible plate-shaped fireproof insulation material 110E may be formed in combination with fixing bolts 114, U-shaped plates 117, 119, gypsum boards 110A, 110B, or 110C, as described in Figures 7 to 11, and the shape-retaining portion 121 may also be positioned in any desired location.

FIG. 13 is a rear view, a plan view, and a left side view showing one example of installation in which flexible, plate-shaped fireproof insulation material is installed on the peripheral surface of a mullion.
As shown in Figure 13, the fireproof insulation material 110F is a fireproof material that is flexible and pliable enough to withstand bending processing, and is wrapped around the periphery of the mullion 21 to cover it.

At both ends of the fireproof insulation material 110F, a tapered portion T is formed so that when the fireproof insulation material 110F is wrapped around the upright 21, both ends of the fireproof insulation material 110F are in close contact with the wall material 20.
When the fireproof insulation material 110F is wrapped around the mullion 21, the fireproof insulation material 110E shrinks on the inside surface of the fireproof insulation material 110F and expands on the outside surface of the fireproof insulation material 110E. This causes a difference in the expansion and contraction between the inside surface and the outside surface of the fireproof insulation material 110F, and the end portion of the fireproof insulation material 110F cannot be in close contact with the wall material 20.

Therefore, tapered portions T are formed at both ends of the fireproof insulation material 110F so that the width of the inner side of the fireproof insulation material 110F is shortened. This shortens the inner side of the bent fireproof insulation material 110F, and when the fireproof insulation material 110F is wrapped around the mullion 21, both ends of the fireproof insulation material 110F can be tightly attached to the wall material 20.

The outer surface of the fireproof insulation material 110F is provided with a shape-retaining portion 121B. The shape-retaining portion 121B is formed with a main trunk portion 121C that is arranged in the center of the fireproof insulation material 110F along the longitudinal direction of the fireproof insulation material 110F, and multiple branch portions 121D that branch out in a rib-like shape to the left and right from the main trunk portion 121C.

The shape-retaining portion 121B is made of a metal plate or the like that can be bent and is strong enough to be fixed in the folded state, and the shape-retaining portion 121B and the fire-resistant insulation material 110F are fixed together with an adhesive.

The lower end of the shape-retaining portion 121B is provided with a folded portion 121F to prevent the fireproof insulation material 110F from falling out of the shape-retaining portion 121B, and the lower end of the main trunk portion 121C is folded upward in advance.

In this way, the shape of the fireproof insulation material 110F can be maintained by bending the shape-retaining portion 121B on-site to match the shape of the upright 21, so that the fireproof insulation material 110F can be easily attached to the desired location along the upright 21 from the lower floor even in a small work space.

When installing the fireproof insulation material 110F by wrapping it around the upright 21, the shape-retaining portion 121B is adhered to the plate-shaped fireproof insulation material 110F, and then the fireproof insulation material 110F and the shape-retaining portion 121B are folded and wrapped around the upright 21 and fixed in place. Note that the shape-retaining portion 121, horizontal support edge 122, vertical support edge 123, etc. are omitted and not shown here, but the support bracket 120 can be fixed to the structure in any shape.

FIG. 14 is a perspective view showing an example of a state in which the shape-retaining portion is fixed to a fireproof material.
As shown in FIG. 14, any number of shape-retaining portions 121A can be disposed and fixed at any positions on the fireproof insulating material 110.

In addition, multiple shape-retaining parts 121A can be connected with a main member 121G. By connecting multiple shape-retaining parts 121A with a main member 121G in this way, the fireproof insulation material 110 can be easily fitted into the upright 21 while maintaining its vertical position even in places with a small working space.

REFERENCE SIGNS LIST 10 Floor slab 20 Wall material 21 Mullion 24 Spandrel panel 30 Fireproof interlayer material 70 Steel beam material 100 Fireproof insulation device 110 Fireproof insulation material 120 Support metal fitting 121 Shape retention part 121A Shape retention part 122 Horizontal support edge 123 Vertical support edge 124 Bolt G Interlayer gap K Notch part

Claims (8)

In a fireproof insulation device for providing fireproof insulation to the spandrels of a metal curtain wall structure with fireproof panels attached between the mullions,
A fireproof insulation material previously formed below a floor slab of the building and shaped to cover a portion of the upright exposed on the indoor side of the building;
A shape retaining portion for retaining the covering shape of the fireproof insulating material;
a support means for supporting the fireproof insulation material while covering the exposed portion to prevent the fireproof insulation material from falling;
Equipped with
The fireproof insulation material is
A plate-shaped fireproof insulation material for both sides that covers the exposed portion from both sides along the longitudinal direction of the upright;
a plate-shaped one-sided fireproof insulation material covering the exposed portion from the indoor side of the building along the longitudinal direction of the upright;
Equipped with
The shape retention portion is
A U-shaped fixing means for fixing the both side refractory insulation material and the one side refractory insulation material in a U-shaped shape,
The U-shaped fixing means is
A U-shaped plate formed in advance into a U-shape,
The two side fireproof insulation material and one side fireproof insulation material,
The plate is fixed to the inside or outside of the U-shaped plate.
The U-shaped plate is
It is formed of a plate-shaped gypsum board,
A fireproof and heat-insulating device characterized by : In a fireproof insulation device for providing fireproof insulation to the spandrels of a metal curtain wall structure with fireproof panels attached between the mullions,
A fireproof insulation material previously formed below a floor slab of the building and shaped to cover a portion of the upright exposed on the indoor side of the building;
A shape retaining portion for retaining the covering shape of the fireproof insulating material;
a support means for supporting the fireproof insulation material while covering the exposed portion to prevent the fireproof insulation material from falling;
Equipped with
The fireproof insulation material is
A flexible fireproof insulation material having flexibility and having a tapered portion in which both ends are inclined from the outer surface to the inner surface when the material is folded over the mullion,
The shape retention portion is
A bent shape retaining metal fitting that bends the flexible fireproof insulation material and maintains the shape.
A fireproof and insulating device characterized by : The bent shape retaining metal fittings are
A main part provided along the longitudinal direction of the flexible fireproof insulation material and the upright;
A plurality of branches branched on both sides from the main trunk;
3. The fireproof and insulating device according to claim 2 , further comprising: a folded-back portion in which a lower end of the main portion is folded upward while sandwiching the flexible fireproof insulation material, thereby preventing the flexible fireproof insulation material from falling;
4. The fireproof and insulating device according to claim 3 , further comprising: A method of fireproof insulation for the spandrels of a metal curtain wall structure with fireproof panels attached between the mullions, comprising:
A process of forming a fireproof insulation material in a shape that covers a portion of the upright that is exposed on the indoor side of the building below a floor slab of the building;
A step of maintaining the covering shape of the fireproof insulation material by a shape maintaining portion;
a step of supporting the refractory insulation material with a supporting means to prevent the refractory insulation material from falling while covering the exposed portion;
Equipped with
The fireproof insulation material is
A plate-shaped fireproof insulation material for both sides that covers the exposed portion from both sides along the longitudinal direction of the upright;
a plate-shaped one-sided fireproof insulation material covering the exposed portion from the indoor side of the building along the longitudinal direction of the upright;
Equipped with
The shape retention portion is
A U-shaped fixing means for fixing the both side refractory insulation material and the one side refractory insulation material in a U-shaped shape,
The U-shaped fixing means is
A U-shaped plate formed in advance into a U-shape,
The two side fireproof insulation material and one side fireproof insulation material,
The plate is fixed to the inside or outside of the U-shaped plate.
The U-shaped plate is
It is formed of a plate-shaped gypsum board,
A fire-resistant insulation method comprising : A method of fireproof insulation for the spandrels of a metal curtain wall structure with fireproof panels attached between the mullions, comprising:
A process of forming a fireproof insulation material in a shape that covers a portion of the upright that is exposed on the indoor side of the building below a floor slab of the building;
A step of maintaining the covering shape of the fireproof insulation material by a shape maintaining portion;
a step of supporting the refractory insulation material with a supporting means to prevent the refractory insulation material from falling while covering the exposed portion;
Equipped with
The fireproof insulation material is
A flexible fireproof insulation material having flexibility and having a tapered portion in which both ends are inclined from the outer surface to the inner surface when the material is folded over the mullion,
The shape retention portion is
A bent shape retaining metal fitting that bends the flexible fireproof insulation material and maintains the shape.
A fire-resistant insulation method comprising : In a fireproof and insulated structure, the spandrels of a metal curtain wall structure are insulated against fire with fireproof panels between the mullions.
A fireproof insulation material previously formed below a floor slab of the building and shaped to cover a portion of the upright exposed on the indoor side of the building;
A shape retaining portion for retaining the covering shape of the fireproof insulating material;
a support means for supporting the fireproof insulation material while covering the exposed portion to prevent the fireproof insulation material from falling;
Equipped with
The fireproof insulation material is
A plate-shaped fireproof insulation material for both sides that covers the exposed portion from both sides along the longitudinal direction of the upright;
a plate-shaped one-sided fireproof insulation material covering the exposed portion from the indoor side of the building along the longitudinal direction of the upright;
Equipped with
The shape retention portion is
A U-shaped fixing means for fixing the both side refractory insulation material and the one side refractory insulation material in a U-shaped shape,
The U-shaped fixing means is
A U-shaped plate formed in advance into a U-shape,
The two side fireproof insulation material and one side fireproof insulation material,
The plate is fixed to the inside or outside of the U-shaped plate.
The U-shaped plate is
It is formed of a plate-shaped gypsum board,
A fire - resistant and insulated structure. In a fireproof and insulated structure, the spandrels of a metal curtain wall structure are insulated against fire with fireproof panels between the mullions.
A fireproof insulation material previously formed below a floor slab of the building and shaped to cover a portion of the upright exposed on the indoor side of the building;
A shape retaining portion for retaining the covering shape of the fireproof insulating material;
a support means for supporting the fireproof insulation material while covering the exposed portion to prevent the fireproof insulation material from falling;
Equipped with
The fireproof insulation material is
A flexible fireproof insulation material having flexibility and having a tapered portion in which both ends are inclined from the outer surface to the inner surface when the material is folded over the mullion,
The shape retention portion is
A bent shape retaining metal fitting that bends the flexible fireproof insulation material and maintains the shape.
A fire - resistant and insulated structure.