JP2022050971A - Fireproof insulation arrangement, fireproof insulation method, and fireproof insulation structure - Google Patents

Abstract

To provide a fireproof insulation arrangement capable of easily fireproof coating at the indoor side of a mullion in a spandrel panel, a fireproof insulation method, and a fireproof insulation structure.SOLUTION: A fireproof insulation 110 is formed covering an exposed part of a mullion at the indoor side of a building below a floor slab 10 that the building has in advance. A shape-retaining part 121 holds the covering shape of the fireproof insulation 110. A support means 120 supports and covers an exposed portion of the fireproof insulation 110 to prevent the same from falling.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fire-resistant insulation device, a fire-resistant heat insulating method, and a fire-resistant heat insulating structure. The present invention relates to a fire-resistant heat insulating device for closing a gap formed between them, a fire-resistant heat insulating method, and a fire-resistant heat insulating structure.

Conventionally, in high-rise buildings, an outer wall construction method has been adopted in which a non-bearing wall called a curtain wall is fitted into a frame such as a base or a pillar so as not to impose a load on the building.

The outer wall construction method using a curtain wall is composed of several members, and the most typical outer wall construction method using a metal curtain wall is to install a partition material called a mullion between the upper and lower floors and beams. A mullion-type outer wall construction method is known in which glass or a fireproof panel, which is a wall material, is fitted therein.

In addition, in a predetermined fire protection section divided by a building, if the part divided by the fire protection section is covered with glass, it is conceivable that the fire will spread to the adjacent section or the upper and lower floors via the outer wall in the event of a fire. Therefore, a floor, a wall, or a specific fire-prevention facility having a fire-resistant structure for partitioning a fire-prevention section called "spadrel" is to be provided in the section with the adjacent fire-prevention section.

Specifically, the wall material provided in the spandrel portion where the floor slab and the outer wall are in contact is a fireproof panel in which a glass surface provided on the outdoor side and a fireproof board provided on the indoor side of the glass surface are integrated. is set up.

Such a mullion-type metal curtain wall is characterized by a design in which wall materials such as glass and fireproof panels are attached to the indoor side rather than the mullion, and the vertical lines of the mullion are emphasized from the outside. Also, in recent years, there is an increasing number of construction methods called back mullion, in which wall materials are attached to the outdoor side of a mullion.

FIG. 15 is a front view, a top view, and a side sectional view showing a structural example of a mullion type metal curtain wall.
As shown in FIG. 15, the mullion type metal curtain wall is composed of a mullion 21 which is a vertical rail member erected on the upper and lower floor slabs 10 and a transom member which connects the mullion 21 in the lateral direction. A certain transam 22 is assembled in a grid pattern and fixed to the floor slab 10 by a fixing bracket 23.

Further, the floor slab 10 is supported by the steel beam member 70, and the mullion 21 or the refractory panel 24 fitted in the mullion 21 is fixed to the floor slab 10 by the fixing bracket 23.
Further, a wall material 20 such as a fireproof panel 24 and a glass window 25 is fitted between the mullion 21 and the transam 22 assembled in a grid pattern. Further, the mullion 21 and the transam 22 are made of an aluminum material in order to improve lightness, weather resistance and workability.

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

As described above, since the mullion 21 is usually made of an aluminum material, it has low fire resistance and melts at about 600 ° C. For example, when a fire breaks out outdoors as shown in FIG. 16, the mullion 21 exposed on the outdoor side may be melted and burned down by the heat generated by the fire.

If the mullion 21 is melted and burned down by a fire, it cannot function as a spandrel. Therefore, the fire resistance is ensured by increasing the number and thickness of the aluminum materials constituting the mullion 21.

Specifically, in order to secure the fire resistance for 30 minutes, the mullion 21 is formed by laminating two or more layers of aluminum plates of 2 mm or more with a laminated thickness of 5 mm, and the fire resistance for 1 hour is secured. In this case, it is operated by laminating four or more layers of aluminum plates having a thickness of 2 mm or more to form a mullion 21 with a laminated thickness of 10 mm.

However, since the aluminum material constituting the mullion 21 has high thermal conductivity, even if the number and thickness of the aluminum materials constituting the mullion 21 are increased as described above, the heat of the fire generated outdoors is still higher. Since it is transmitted indoors via the stand 21, the performance as an outer wall that controls the indoor side to a certain temperature or less is not satisfied.

Therefore, technical advice was notified by the Ministry of Land, Infrastructure, Transport and Tourism in 2009, and it is obligatory to cover the indoor side of the mullion 21 in the spandrel panel section with fireproof coating. In response to this technical advice, a method of spraying rock wool on the indoor side of the mullion 21 in the spandrel panel portion to provide a fireproof coating is currently used.

However, the spraying work of rock wool in a narrow place has a problem that the work efficiency is lowered and the stability of the construction quality is lowered.
For example, when spraying rock wool on the indoor side of the mullion 21 in the spandrel panel portion, rock wool is easily sprayed on the upper part of the floor slab 10 because there are no obstacles around the mullion 21 and the space is open. be able to. Further, the work of pressing the rock wool against the mullion 21 with a trowel can be performed without any problem.

However, with respect to the lower part of the floor slab 10, the work space is narrow because there is a steel beam member 70 such as H steel arranged on the lower side surface of the floor slab 10. When spraying rock wool in a place where the work space is narrow like this, there is a problem that rock wool adheres to unnecessary places, and it is necessary to carefully cure it so that unnecessary rock wool does not adhere. , It takes a lot of time and effort for construction.

Further, the work of pressing the rock wool against the mullion 21 with a trowel also causes a problem that the steel beam member 70 and the mullion 21 cannot be reached when the work is performed in a narrow place. In this case, the sprayed rock wool cannot be completely fire-resistant coated on the indoor side of the mullion 21, which leads to a decrease in the stability of construction quality.

As a countermeasure for the wet method by spraying rock wool in such a narrow space, a U-shaped refractory board is attached to the structure on both sides of the U-shaped refractory board, such as bolts. A refractory board support structure by a dry method having a metal fitting to be fastened with is developed (for example, Patent Document 3).

FIG. 19 is a plan sectional view showing a fireproof board support structure of a metal curtain wall.
As shown in FIG. 19, the refractory board support structure 60 of the metal curtain wall disclosed in Patent Document 3 consists of a refractory panel 24 arranged on both left and right sides of an aluminum mullion 21 and a refractory panel 24. The fixing bracket 23 and the mullion 21 are covered from the indoor side, and the mullion fireproof panel 61 structurally separated from the fireproof panel 24 and the mullion fireproof panel 61 are supported by the steel beam material 70. It includes a pair of upper brackets 62 and a pair of lower brackets 63.

According to the fireproof board support structure 60 of the metal curtain wall disclosed in Patent Document 3, the fireproof panels 24 are arranged on the left and right sides of the mullion 21. The mullion 21 is covered from the indoor side by the mullion fireproof panel 61. Therefore, since the temperature rise of the mullion 21 at the time of fire is reduced, melting of the mullion 21 and the like are suppressed.

Further, the refractory panel 24 is supported by the structure by the fixing metal fitting 23. On the other hand, the mullion refractory panel 61 is structurally separated from the fireproof panel 24, and is supported by the structure by a pair of upper brackets 62 and a pair of lower brackets 63, which are separate from the fixing bracket 23.

As a result, even if the refractory panels 24 on the left and right sides of the mullion 21 show different deformation behaviors, the mullion fireproof panel 61 is suppressed from following the deformation of these metal curtain wall refractory boards. To. Therefore, damage to the mullion refractory panel 61 is suppressed.

Japanese Unexamined Patent Publication No. 2002-242334 Japanese Unexamined Patent Publication No. 2010-261232

However, in the fireproof board support structure 60 of the metal curtain wall disclosed in Patent Document 3, the mullion fireproof panel 61 is fixed to the steel beam member 70 via the pair of upper brackets 62 and the pair of lower brackets 63. Therefore, there is a problem that the installation work in a narrow place is forced and the workability is remarkably lowered.

Specifically, since the upper bracket 62 is attached to the upper part of the steel frame beam material 70, when the steel frame beam material 70 and the square 21 come close to each other, the lower flange of the steel frame beam material 70 becomes a barrier, and the upper side is provided with a bolt or the like. The work of attaching the bracket 62 to the upper part of the steel beam member 70 becomes difficult.

Further, since the lower bracket 63 is attached to the lower part of the steel frame beam material 70, the bolt tightening position becomes a blind spot due to the lower flange of the steel frame beam material 70, which makes it difficult to fasten the lower bracket 63.

Further, not only the fastening work of the upper bracket 62 and the lower bracket 63 becomes difficult for the above reason, but also the indoor side of the mullion 21 cannot be completely fireproofed due to the incomplete fastening work. There is a possibility.

If a fire occurs in a state where the indoor side of the mullion 21 in the spandrel panel portion is not completely covered with fire resistance, the fire spreads from this gap to the upper and lower floors, and the gap becomes a weak point in terms of fire resistance.

Further, when heat is transferred indoors from the incompletely fireproof coated mullion 21 due to a fire generated outside, there is a risk that the heat due to the fire will be transferred to the steel beam member 70 supporting the floor slab 10. When the heat generated by the fire is transferred to the steel frame beam material 70, which is sensitive to heat, the steel frame beam material 70 is easily deformed.

The steel beam material 70 is a structure that becomes a framework that supports the structure of the building, and when the steel beam material 70 is deformed, it eventually supports the floor slab 10 and the building that form the structure together with the steel beam material 70. It is very dangerous because it may not be possible and it may lead to the collapse of the entire building.

The present invention has been made in view of these respects, and an object of the present invention is to provide a fire-resistant heat insulating device, a fire-resistant heat insulating method, and a fire-resistant heat insulating structure capable of easily performing a fire-resistant coating on the indoor side of a mullion in a spandrel panel portion. do.

In the present invention, in order to solve the above problem, in a fire-resistant heat insulating device that is fire-resistant and heat-insulated at a spandrel portion of a building by a metal curtain wall having a fire-resistant panel attached between squares, it is below the floor slab of the building in advance. The refractory heat insulating material formed in a shape covering the exposed part of the building on the indoor side of the square, the shape holding portion for holding the covering shape of the fireproof heat insulating material, and the exposed part. Provided is a refractory heat insulating device comprising a supporting means for supporting the refractory heat insulating material in a covered state in order to prevent the fire resistant heat insulating material from falling.

As a result, the refractory heat insulating material is formed in a shape that covers the exposed part of the mullion on the indoor side of the building below the floor slab of the building in advance, and the shape holding portion holds the covering shape of the refractory heat insulating material. Supporting means support to prevent the refractory insulation from falling while covering the exposed area.

Further, in the present invention, in a fireproof heat insulating method in which fireproof insulation is performed at a spandrel portion of a building by a metal curtain wall in which a fireproof panel is attached between the squares, the square is located below the floor slab of the building in advance. Among them, a step of forming a refractory heat insulating material in a shape covering an exposed part on the indoor side of the building, a step of holding a covering shape of the refractory heat insulating material by a shape holding portion, and a state of covering the exposed part. Provided is a refractory heat insulating method comprising a step supported by a supporting means in order to prevent the refractory heat insulating material from falling.

As a result, the refractory heat insulating material is formed in a shape that covers the exposed part of the mullion on the indoor side of the building below the floor slab of the building in advance, and the shape holding portion holds the covering shape of the refractory heat insulating material. Supporting means support to prevent the refractory insulation from falling while covering the exposed area.

Further, in the present invention, in a fire-resistant heat insulating structure in which fire-resistant heat insulation is performed at a spandrel portion of a building by a metal curtain wall in which a fire-resistant panel is attached between the squares, the square is located below the floor slab of the building in advance. Among them, the fire-resistant heat insulating material formed in a shape covering the exposed portion on the indoor side of the building, the shape-retaining portion for holding the coating shape of the fire-resistant heat insulating material, and the exposed portion covered. Provided is a fireproof insulation structure characterized by comprising supporting means for supporting the fireproof insulation to prevent it from falling.

As a result, the refractory heat insulating material is formed in a shape that covers the exposed part of the mullion on the indoor side of the building below the floor slab of the building in advance, and the shape holding portion holds the covering shape of the refractory heat insulating material. Supporting means support to prevent the refractory insulation from falling while covering the exposed area.

According to the fire-resistant heat insulating device, the fire-resistant heat insulating method, and the fire-resistant heat insulating structure of the present invention, the fire-resistant heat insulating material is formed in a shape that covers the exposed part of the slab below the floor slab of the building in advance on the indoor side of the building. The shape-retaining part holds the covering shape of the fire-resistant insulation that is formed, and the support means supports it to prevent the fire-resistant insulation from falling while covering the exposed part. The side can be completely and easily covered, and a fireproof insulation structure can be easily obtained.

It is a vertical sectional view and a horizontal sectional view which shows the fireproof structure which installed the fireproof insulation device in the metal curtain wall structure of the knockdown type which concerns on 1st Embodiment. It is a front view, the rear view, the left side view, the right side view, the plan view, and the bottom view which show the detail of the refractory insulation device in the knockdown system which concerns on 1st Embodiment. It is a perspective view which shows the refractory structure which installed the refractory insulation device which concerns on 1st Embodiment. 2 is a vertical sectional view and a horizontal sectional view showing a fireproof structure in which a fireproof heat insulating device is installed in a knockdown type metal curtain wall structure according to a second embodiment. It is a front view, the rear view, the left side view, the right side view, the plan view, and the bottom view which show the detail of the refractory insulation device in the knockdown system which concerns on 2nd Embodiment. It is a perspective view which shows the refractory structure which installed the refractory insulation device which concerns on 2nd Embodiment. It is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view which show one of the structural examples of a refractory heat insulating material supported by a support metal fitting. It is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view which show one of the structural examples of a refractory heat insulating material supported by a support metal fitting. It is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view which show one of the structural examples of a refractory heat insulating material supported by a support metal fitting. It is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view which show one of the structural examples of a refractory heat insulating material supported by a support metal fitting. It is a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view which show one of the structural examples of a refractory heat insulating material supported by a support metal fitting. It is a back view and a plan view which shows one of the formation examples which form the refractory heat insulating material in a U shape. It is a rear view, a plan view, and a left side view which shows one of the installation examples which install the plate-shaped refractory heat insulating material with flexibility on the peripheral surface of a mullion. It is a perspective view which shows an example of the state which the shape holding part is fixed to the refractory material. It is a front view, the top view and the side sectional view which show the structural example of a mullion type metal curtain wall. It is a top view which shows the detail of the spandrel panel part of the metal curtain wall of a mullion type.

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 heat insulating device is installed in a knockdown type metal curtain wall structure according to the first embodiment.

As shown in FIG. 1, the wall material 20, particularly the refractory panel 24 in the spandrel portion, is supported by being fitted into a mullion 21 erected in the vertical direction, and the floor slab 10 supported by the steel beam material 70. The indoor side of the mullion 21 is exposed from the fireproof panel 24 to the indoor side between the fireproof panel 24 and the fireproof panel 24.

The refractory heat insulating device 100 includes a refractory heat insulating material 110 having fire resistance and heat insulating properties, and a support metal fitting 120 for supporting the refractory heat insulating material 110 and fixing the refractory heat insulating material 110 to the fireproof panel 24 above the floor slab 10. The refractory heat insulating material 110 is fixed so as to cover the cubic plate 21 exposed to the indoor side under the floor slab 10.

The fireproof heat insulating material 110 is made elastic by bundling or laminating inorganic fibers such as ceramic fibers, rock wool, glass wool, and calcium silicate, and is a square exposed indoors under the floor slab 10. By covering 21 from the peripheral surface, a complete fire protection section can be provided.

Further, since the square 21 and the steel beam member 70 are separated by the fireproof heat insulating material 110, even if an outdoor fire occurs, it is possible to prevent the temperature rise from being transmitted indoors due to the outdoor fire. , It is possible to prevent the steel frame beam material 70 from being deformed by light heat.

In FIG. 1, the refractory heat insulating material 110 for covering the mullion 21 for fitting the knockdown type metal curtain wall is described, but the size of the refractory heat insulating material 110 is exposed according to the shape of the mullion 21. If the mullion 21 can be covered, it can be formed in any shape, and the support metal fitting 120 for supporting the refractory heat insulating material 110 can also be formed in any shape accordingly.
The refractory heat insulating material 110 is formed in a shape that can sufficiently cover the mullion 21 exposed on the indoor side between the refractory panel 24 and the steel beam member 70 under the floor slab 10.

Hereinafter, with the mullion 21 erected in the vertical direction (height direction of the wall material 20) connected to the refractory panels 24, the width (width direction of the wall material 20) 40 mm × thickness (wall material 20) on the indoor side. A case where a structure in which 60 mm (in the thickness direction of 20) protrudes is covered with a refractory heat insulating material 110 will be described as an example. The dimensions shown here are just examples and can be changed as appropriate according to the design conditions of the building.

As shown in the cross-sectional view taken along the line AA of FIG. 1, the refractory heat insulating material 110 is formed of a rectangular parallelepiped having a width of 120 mm and a thickness of 100 mm, and the mullion 21 is inserted on the outdoor side of the widthwise side surface of the refractory heat insulating material 110. A notch K having a width of 40 mm and a thickness of 60 mm is formed along the height direction, and the cross section is formed in a U shape.

The fireproof heat insulating material 110 is placed between the steel frame beam material 70 such as H steel and the fireproof panel 24 arranged on the lower side surface of the floor slab 10, and between the lower end portion of the fireproof panel 24 and the lower side surface of the floor slab 10. It is formed at a height capable of covering the exposed square 21 in.

Specifically, the steel beam material 70 is H-steel having a height of 150 mm, the height of the fireproof panel 24 is 835 mm, and the height of the fireproof panel 24 from the upper end of the fireproof panel 24 to the lower surface of the floor slab 10 is In the case of 337.5 mm, the height of the fireproof heat insulating material 110 is formed at 497.5 mm, which is the same height as the height from the lower surface of the floor slab 10 to the lower end of the fireproof panel 24 in the fireproof panel 24.

As a result, the refractory heat insulating material 110 can cover the exposed portion of the mullion 21 on the indoor side. Further, the fireproof heat insulating material 110 is interposed between the fireproof panel 24 and the steel frame beam material 70 that are close to the floor slab 10, and the fireproof heat insulating material 110 can completely shield the outdoors from the steel frame beam material 70.

Therefore, even if a fire occurs outdoors, the heat from the outside is not directly transferred to the steel beam material 70, and even if the temperature rises due to the outdoor fire, the structure supports the building inside the building. It is possible to prevent the steel beam member 70 from being deformed.

Further, by setting the height of the refractory heat insulating material 110 to the height from the lower surface of the floor slab 10 to the lower end of the refractory panel 24 in the refractory panel 24, the refractory heat insulating material 110 does not protrude from the refractory panel 24.

That is, even if only the glass window 25 is connected to the lower surface of the fireproof panel 24, the fireproof heat insulating material 110 fits within the height of the fireproof panel 24, so that the fireproof heat insulating material 110 is outdoors from the surroundings via the glass window 25. The aesthetics are good because it is not exposed.

In the present embodiment, the example in which the refractory heat insulating material 110 is formed in a cube to form a notch portion K has been described, but by combining three plate-shaped bodies, a horizontal cross section is formed in a U shape. It is also possible to form a notch K into which the mullion 21 is inserted.

Further, the peripheral surface of the fireproof heat insulating material 110 may be provided with an outer cover material made of, for example, a polyethylene film that completely covers the surface of the fireproof heat insulating material 110 with fireproof coating, and the fireproof heat insulating material 110 can be provided from moisture such as rainwater infiltrated from the outside. Can be protected.

Further, as the outer cover material that covers the peripheral surface of the refractory heat insulating material 110, a material having moisture-proof performance such as an aluminum sheet material can be installed on the surface. By providing the outer cover material with moisture-proof performance, it is possible to block the moisture flowing inward from the outside of the building, so that it is possible to prevent dew condensation and frost generated on the refractory heat insulating material 110.

The support metal fitting 120 has a shape holding portion 121 for covering the fireproof heat insulating material 110 from the indoor side and sandwiching the fireproof heat insulating material 110 to hold the shape of the fireproof heat insulating material 110, and extending horizontally from the shape holding portion 121. It is provided with a horizontal support side 122 having a surface in contact with the fireproof panel 24, and a vertical support side 123 having a surface extending in the vertical direction from the horizontal support side 122 and in contact with the fireproof panel 24.

The shape holding portion 121 is formed by bending a metal plate so that the horizontal cross section has a U shape, so that the opening of the shape holding portion 121 and the opening of the fireproof heat insulating material 110 are in the same direction. Then, the fireproof heat insulating material 110 is inserted and fixed from the opening of the shape holding portion 121.

The method of fixing the refractory heat insulating material 110 and the shape holding portion 121 is, for example, a method of interposing an adhesive or double-sided tape between the refractory heat insulating material 110 and the shape holding portion 121 to fix the shape holding portion 121, or any method of fixing the shape holding portion 121. There is a method of making a hole in a place and fixing the refractory heat insulating material 110 and the shape holding portion 121 with screws or bolts from the hole, and the refractory heat insulating material 110 can be fixed by any method.

By covering and sandwiching the elastic fire-resistant heat insulating material 110 with the shape-retaining portion 121, the shape of the fire-resistant heat insulating material 110 can be maintained. The stand 21 can be securely covered and sandwiched.

Further, since the refractory heat insulating material 110 is held by the shape holding portion 121 in a shape that matches the shape of the mullion 21, the refractory heat insulating material 110F is desired to be easily along the mullion 21 from the lower floor even in a narrow work space. It can be attached to a place.

Further, the shape holding portion 121 is only a shape holding portion 121 formed in a U shape as appropriate according to the height of the fire resistant heat insulating material 110 in order to prevent deformation of the fire resistant heat insulating material 110. Can be provided at an arbitrary height position of the refractory heat insulating material 110. This makes it possible to prevent deformation such as expansion of the opening of the refractory heat insulating material 110.

Although the example in which the shape-retaining portion 121A and the shape-retaining portion 121 are separately formed is shown here, the shape-retaining portion 121 and the shape-retaining portion 121A are formed of a series of metals to open the refractory heat insulating material 110. It may be connected by a metal side along the side surface opposite to the portion.

The horizontal support side 122 is a metal that extends in the horizontal direction from both ends of the opening of the shape holding portion 121 and is bent at a right angle from both ends of the shape holding portion 121 in the opening direction to both outer sides at a predetermined length. It is a side.

The horizontal support side 122 is fixed to the floor slab 10, which is a structure that supports the building, by being connected to a fixing bracket 23 for fixing the vertical 21 or the fireproof panel 24 and the floor slab 10 provided on the upper surface of the floor slab 10. It is responsible for adjusting the position horizontally as much as possible.

The vertical support side 123 is a metal side that is in contact with the fireproof panel 24 that is vertically extended at a position that can be connected to the fixing bracket 23 by the horizontal support side 122, and is inserted from the lower side of the interlayer gap G1 to support the vertical support. The upper end of the side 123 is formed to be long enough to penetrate above the upper surface of the floor slab 10.

A bolt hole is provided in the upper part of the vertical support side 123, and is fastened to the fixing bracket 23 for fixing the mullion 21 or the refractory panel 24 and the floor slab 10 by a fastener such as a bolt 124. As a result, the fireproof heat insulating material 110 covers the mullion 21 exposed between the lower end of the fireproof panel 24 and the lower side surface of the floor slab 10 without falling from the floor slab 10 which is a structure supporting the building. It is fixed.

Specifically, the upper portion of the vertical support side 123 is sandwiched between the fixing bracket 23 and the mullion 21 or the fireproof panel 24, and the fixing bracket 23 is fixed to the mullion 21 or the fireproof panel 24 by a bolt 124. Fastened and fixed.

Since the fixing bracket 23 is fixed to the floor slab 10 which is a structure that supports the building, the vertical support side 123 is fixed to the floor slab 10 via the fixing bracket 23. That is, the refractory heat insulating material 110 is fixed to the floor slab 10 which is a structure by the support metal fitting 120.

The fixing bracket 23 referred to here is not only for fixing the floor slab 10 which is a structure supporting the building and the fireproof panel 24, but also for example, an auxiliary for fixing the fixing bracket 23 to the fireproof panel 24. Metal fittings can also be included. That is, the support metal fitting 120 can also support the refractory heat insulating material 110 by fastening the fixing metal fitting 23 to the auxiliary metal fitting for fixing the fixing metal fitting 23 to the fireproof panel 24 with a fastener such as a bolt 124.

The fireproof heat insulating material 110 in the above example is supported by the support metal fitting 120, and the support metal fitting 120 is fixed to the fireproof panel 24 with fasteners. For example, an adhesive or double-sided tape may be interposed in the portion where the material 110 and the mullion 21 are in contact with each other to ensure that the refractory heat insulating material 110 and the mullion 21 are adhered to each other.

Further, in the present embodiment, the horizontal support side 122 is formed between the shape holding portion 121 and the vertical support side 123, but if the support metal fitting 120 can be fixed to the fixing metal fitting 23, the horizontal support side 122 It is also possible to extend the vertical support side 123 from the shape holding portion 121 by omitting.

Although FIG. 1 has been described as the refractory heat insulating material 110 for covering the mullion 21 for fitting the knockdown type metal curtain wall, the shape of the refractory heat insulating material 110 is a desired shape depending on the shape of the mullion 21. It can be formed, for example, when covering the mullion 21 for fitting a unit type metal curtain wall, the refractory heat insulating material 110 can be formed according to the shape of the unit type mullion 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 refractory heat insulating device in the knockdown method according to the first embodiment.
As shown in FIG. 2, the refractory heat insulating device 100 includes a refractory heat insulating material 110 and a support metal fitting 120 for supporting and fixing the refractory heat insulating material 110 to the fireproof panel 24, and the support metal fitting 120 retains its shape. A portion 121, two horizontal support sides 122, and two vertical support sides 123 are provided.

It is desirable that the lengths of the two side surfaces of the shape-retaining portion 121 and the shape-retaining portion 121A in the thickness direction be shorter than the thickness of the refractory heat insulating material 110. Equal the length of the two side surfaces of the shape-retaining portion 121 and the shape-retaining portion 121A in the thickness direction to the thickness of the refractory heat insulating material 110, or the length of the two side surfaces of the shape-retaining portion 121 and the shape-retaining portion 121A in the thickness direction. If the thickness is made greater than or equal to the thickness of the fireproof heat insulating material 110, when the fireproof heat insulating device 100 is pressed against the mullion 21, the two side surfaces of the shape holding portion 121 and the shape holding portion 121A in the thickness direction are fireproof first. This is because it may interfere with the panel 24 and a gap may be created between the refractory panel 24 and the refractory heat insulating device 100.

Therefore, the thickness of the two side surfaces of the shape-retaining portion 121 and the shape-retaining portion 121A in the thickness direction is made shorter than the thickness of the refractory heat insulating material 110, thereby pressing the refractory heat insulating device 100 against the mullion 21. However, a fireproof structure can be formed without a gap between the fireproof panel 24 and the fireproof heat insulating device 100.

FIG. 3 is a perspective view showing a fireproof structure in which the fireproof heat insulating device according to the first embodiment is installed.
As shown in FIG. 3, in the fireproof heat insulating device 100, first, a worker on the lower floor inserts the fireproof heat insulating material 110 from the lower side of the floor slab 10 along the mullion 21 toward the upper side of the floor slab 10. go. Next, the upper end of the vertical support side 123 is inserted from the interlayer gap G1 between the fixing bracket 23 in the upper surface direction of the floor slab 10 and the fireproof panel 24, and the fireproof heat insulating material 110 is in contact with the lower surface of the floor slab 10. A worker on the upper floor fixes the fixing bracket 23 and the fireproof panel 24 with fasteners such as bolts 124 from the bolt holes provided in the upper part of the vertical support side 123.

At this time, since the bolt holes provided in the upper part of the vertical support side 123 protrude above the upper surface of the floor slab 10 due to the length of the vertical support side 123, the workers on the upper floor can easily make the fireproof heat insulating device 100. Can be fixed to the fixing bracket 23 and the fireproof panel 24.

Further, since the horizontal support side 122 is extended in the horizontal direction so that the vertical support side 123 comes to the position of the bolt 124 that fixes the fixing bracket 23 and the fireproof panel 24, the floor slab 10 and the fireproof panel 24 are connected. The fireproof heat insulating device 100 can be fixed to the fixing metal fitting 23.
Since no obstacles such as the steel beam member 70 are arranged above the floor slab 10, a refractory material such as rock wool can be easily sprayed to obtain a fireproof structure.

Further, when installing the fireproof heat insulating device 100 with a small number of workers, the worker first inserts the fireproof heat insulating device 100 on the lower floor, and the fireproof heat insulating material 110 is in contact with the lower surface of the floor slab 10. The fireproof heat insulating device 100 is temporarily fixed at a desired position by driving screws or nails horizontally from the closed side surface of the fireproof heat insulating material 110 toward the square 21, and the support member is moved to the upper floor after the worker moves. May be fixed to the structure that supports the building.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The refractory heat insulating device of the present embodiment is substantially the same as the configuration shown in the first embodiment except that the shape of the support metal fitting and the support method are different. Therefore, the same components as those of the first embodiment will be designated by 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 heat insulating device is installed in a knockdown type metal curtain wall structure according to a second embodiment.
The refractory heat insulating device 100 includes a refractory heat insulating material 110 and a support metal fitting 120 for supporting and fixing the refractory heat insulating material 110 to the refractory panel 24, and the refractory panel 24 and the steel beam material are provided under the floor slab 10. It is fixed so as to cover the refractory 21 with the 70.

The support metal fitting 120 is bent horizontally from the shape holding portion 121, the horizontal support side 122, the vertical support side 123, and the vertical support side 123 in the floor slab 10 direction, and is arranged on the upper surface of the floor slab 10. It has sides 125 and.

The upper surface support side 125 is formed by horizontally bending the vertical support side 123 in the floor slab 10 direction. The vertical support side 123 is bent at a position where there is no gap between the refractory heat insulating material 110 and the lower surface of the floor slab 10 with the lower surface of the upper surface support side 125 bent in advance in contact with the upper surface of the floor slab 10. Process.

Further, due to the thickness of the floor slab 10, after the fireproof heat insulating device 100 is inserted from under the floor slab 10 at the site, the vertical support side 123 is provided in a state where the fireproof heat insulating material 110 is in contact with the lower surface of the floor slab 10. It is also possible to form the upper surface support side 125 by bending in the direction of the floor slab 10 at the corner of the upper end of the floor slab 10.

The upper surface support side 125 can be securely adhered to the upper surface support side 125 and the floor slab 10 by interposing an adhesive or double-sided tape between the upper surface support side 125 and the upper surface of the floor slab 10, and is not shown. It is also possible to fix the upper surface support side 125 and the floor slab 10 to the bolt holes via fastening bolts or the like.

In the present embodiment, the fireproof structure in which the fireproof heat insulating device 100 is installed in the knockdown type metal curtain wall structure has been described as an example, but the fireproof heat insulating material 110 and the fireproof heat insulating material 110 of the fireproof heat insulating device 100 of the present embodiment have been described. By deforming the dimensions of the support metal fitting 120, the refractory heat insulating device 100 can be installed in the 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 the refractory heat insulating device in the knockdown method according to the second embodiment.
As shown in FIG. 5, the refractory heat insulating device 100 includes a refractory heat insulating material 110 and a support metal fitting 120 for supporting and fixing the refractory heat insulating material 110 to the fireproof panel 24, and the support metal fitting 120 retains its shape. It includes a portion 121, two horizontal support sides 122, two vertical support sides 123, and two upper surface support sides 125. The length of the upper surface support side 125 can be formed in a well-balanced length depending on the weight of the refractory heat insulating material 110 to be supported.

FIG. 6 is a perspective view showing a fireproof structure in which the fireproof heat insulating device according to the second embodiment is installed.
As shown in FIG. 6, in the fireproof heat insulating device 100 in which the vertical support side 123 is bent in advance to form the upper surface support side 125, the worker on the lower floor first inserts the fixing bracket 23 between the two upper surface support sides 125. The two upper surface support sides 125 are inserted from the lower side of the floor slab 10 upward from the interlayer gap G1 in an intervening state, and the fireproof heat insulating device 100 is centered on the bent portion between the upper surface support side 125 and the vertical support side 123. While rotating the rear end from the floor slab 10 toward the fireproof panel 24, the cutout portion K of the fireproof heat insulating material 110 is inserted so as to be fitted into the square 21.

Further, in the fireproof heat insulating device 100 which later forms the upper surface supporting side 125 by bending the vertical support side 123, the worker on the lower floor first moves the fireproof heat insulating material 110 from the lower side of the floor slab 10 along the mullion 21. Is inserted toward the upper side of the floor slab 10.

Next, the upper end of the vertical support side 123 is inserted from the interlayer gap G1 toward the upper surface of the floor slab 10, and the worker on the upper floor is in contact with the lower surface of the floor slab 10 with the fireproof heat insulating material 110 in contact with the vertical support side. The 123 is bent in the direction of the floor slab 10 at the corner of the upper end of the floor slab 10 to form the upper surface support side 125, and the fireproof heat insulating device 100 is fixed.

As described above, the refractory heat insulating material 110 is fixed and supported by the support metal fitting 120 to the structure that is the framework that supports the structure of the building. The shape of the support metal fitting 120 can take another shape as long as it is fixed to the structure. Next, the shape of the refractory heat insulating material 110 fixed and supported by the support metal fitting 120 to the structure that is the framework that supports the structure of the building, and the forming method 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 of the structural examples of the refractory heat insulating material supported by the support metal fittings.
As shown in FIG. 7, in the refractory heat insulating material 110, three plate-shaped refractory materials 111, 112, and 113 are assembled in a U shape by a fixing bolt 114 and a fixing nut 115, and a mullion 21 is fitted. A notch portion K is formed.

Specifically, on both side surfaces of the plate-shaped refractory material 111 in the longitudinal direction of the mullion 21 and in contact with the side surface on the floor slab 10 side, the plate-shaped refractory material 112 and the plate-shaped refractory material 112 along the longitudinal direction of the plate-shaped refractory material 111. 113 is arranged.

The plate-shaped refractory materials 112 and 113 are arranged so as to be perpendicular to the lateral direction of the plate-shaped refractory material 111 from both side surfaces of the plate-shaped refractory material 111. As a result, a U-shaped body is formed by the three plate-shaped refractory materials 111, 112, and 113.

The three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are fixed in a U-shape by fixing bolts 114. Specifically, a plate is formed in a through hole formed in advance from the side surface of the plate-shaped refractory material 112 or 113 arranged on both side surfaces of the plate-shaped refractory material 111 toward the lateral side of the plate-shaped refractory material 111. A fixing bolt 114 is inserted so as to penetrate the refractory materials 111, 112, and 113, and by tightening the fixing nut 115, the refractory materials 111, 112, and 113 are assembled and fixed in a U shape. ..

The fixing bolts 114 and the fixing nuts 115 are provided at a plurality of locations at arbitrary intervals depending on the length of the refractory heat insulating material 110. Further, on the peripheral surface of the refractory heat insulating material 110, a shape holding portion 121 formed by a support metal fitting 120 formed in a U shape is attached to the refractory heat insulating material 110 by a fixing bolt 114 and a fixing nut 115. It is also possible to support the refractory heat insulating material 110 by the support metal fitting 120 while stabilizing the state of the character. Although the horizontal support side 122 and the vertical support side 123 are not shown here, the support metal fitting 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 of the structural examples of the refractory heat insulating material supported by the support metal fittings.
As shown in FIG. 8, the refractory heat insulating material 110 is assembled by bonding three plate-shaped refractory materials 111, 112, and 113 in a U shape by an adhesive 116, and a mullion 21 is fitted therein. A notch portion K is formed.

Specifically, on both side surfaces of the plate-shaped refractory material 111 in the longitudinal direction of the mullion 21 and in contact with the side surface on the floor slab 10 side, the plate-shaped refractory material 112 and the plate-shaped refractory material 112 along the longitudinal direction of the plate-shaped refractory material 111. 113 is arranged.

The plate-shaped refractory materials 112 and 113 are arranged so as to be perpendicular to the lateral direction of the plate-shaped refractory material 111 from both side surfaces of the plate-shaped refractory material 111. As a result, a U-shaped body is formed by the three plate-shaped refractory materials 111, 112, and 113.

The three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are bonded and fixed in a U-shape by an adhesive 116. As the adhesive 116, for example, an inorganic adhesive containing sodium silicate as a main raw material may be used. Since the inorganic adhesive containing sodium silicate as a main raw material has appropriate viscosity and fire resistance, it is a preferable material for adhering the plate-shaped refractory materials 111, 112, and 113. In addition, as the adhesive 116, an organic adhesive or a silicon-based adhesive can also be used.

On the peripheral surface of the refractory heat insulating material 110 assembled in a U shape, a shape holding portion 121 formed by a support metal fitting 120 formed in a U shape is attached to the refractory heat insulating material 110 by a fixing bolt 114 and a fixing nut 115. Therefore, the refractory heat insulating material 110 can be supported by the support metal fitting 120 while stabilizing the assembled U-shaped state. Although the horizontal support side 122 and the vertical support side 123 are not shown here, the support metal fitting 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 of the structural examples of the refractory heat insulating material supported by the support metal fittings.
As shown in FIG. 9, the refractory heat insulating material 110 is assembled by fixing three plate-shaped refractory materials 111, 112, and 113 to the outer peripheral surface of the U-shaped plate 117, and the mullion 21 is fitted. A notch portion K is formed.

Specifically, first, the mullion 21 is formed in a shape that covers the protruding portion in the floor slab 10 direction from the wall material 20 along the longitudinal direction. For example, a metal plate is bent into a U shape. The character plate 117 is formed.

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

Specifically, the plate-shaped refractory material 111 is arranged on the outside of the side surface opposite to the opening side of the U-shaped plate 117, and the side surfaces on both sides of the U-shaped plate 117 sandwiching the opening side and the plate shape. The plate-shaped refractory materials 112 and 113 are arranged so as to be in close contact with the side surface of the refractory material 111. As a result, a U-shaped body is formed by the three plate-shaped refractory materials 111, 112, and 113.

The three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are fixed to the U-shaped plate 117 by a plurality of welding pins 118. The welding pin 118 is a bar material to be welded to the U-shaped plate 117 by welding such as stud welding.

Specifically, the welding pin 118 is inserted toward the U-shaped plate 117 from an arbitrary position outside the three plate-shaped refractory materials 111, 112, and 113, and the welding pin 118 and the U-shaped plate are inserted. Stud welding is performed in contact with 117.

By forming one end side of the welding pin 118 into a flat head, the plate-shaped refractory materials 111, 112, and 113 can be accommodated between the flat head and the tip of the welding pin 118 welded to the U-shaped plate 117. Plate-shaped refractory materials 111, 112, and 113 are fixed to the U-shaped plate 117.

On the peripheral surface of the refractory heat insulating material 110 assembled in a U shape, a shape holding portion 121 (not shown here) by a support metal fitting 120 formed in a U shape is attached to the refractory heat insulating material 110 by a welding pin 118. Therefore, the refractory heat insulating material 110 can be supported by the support metal fitting 120 while stabilizing the assembled U-shaped state. Although the shape holding portion 121, the horizontal support side 122, the vertical support side 123, and the like are omitted here and are not shown, the support metal fitting 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 of the structural examples of the refractory heat insulating material supported by the support metal fittings.
As shown in FIG. 10, the refractory heat insulating material 110 is assembled by fixing three plate-shaped refractory materials 111, 112, and 113 to the inner peripheral surface of the U-shaped plate 119, and the mullion 21 is fitted. A notch portion K is formed.

Specifically, on both side surfaces of the plate-shaped refractory material 111 in the longitudinal direction of the mullion 21 and in contact with the side surface on the floor slab 10 side, the plate-shaped refractory material 112 and the plate-shaped refractory material 112 along the longitudinal direction of the plate-shaped refractory material 111. 113 is arranged.

The plate-shaped refractory materials 112 and 113 are arranged so as to be perpendicular to the lateral direction of the plate-shaped refractory material 111 from both side surfaces of the plate-shaped refractory material 111. As a result, a U-shaped body is formed by the three plate-shaped refractory materials 111, 112, and 113.

Three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are placed on the outside, and three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are placed on the outside. For example, a U-shaped plate 119 obtained by bending a metal plate into a U-shape is arranged so as to cover and adhere to the metal plate from the outside.

The three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are fixed to the U-shaped plate 119 by a plurality of welding pins 118. The welding pin 118 is a bar material to be welded to the U-shaped plate 117 by welding such as stud welding.

Specifically, the welding pin 118 is inserted toward the U-shaped plate 119 from an arbitrary position inside the three plate-shaped refractory materials 111, 112, and 113, and the welding pin 118 and the U-shaped plate are inserted. Stud welding is performed in contact with 119.

By forming one end side of the welding pin 118 into a flat head, the plate-shaped refractory materials 111, 112, and 113 can be accommodated between the flat head and the tip of the welding pin 118 welded to the U-shaped plate 119. Plate-shaped refractory materials 111, 112, and 113 are fixed to the U-shaped plate 119.

By fixing the U-shaped plate 119 to the peripheral surface of the refractory heat insulating material 110 assembled in a U-shape, the U-shaped plate 119 can play the role of the shape holding portion 121 and is assembled. It is also possible to support the refractory heat insulating material 110 by the support metal fitting 120 while stabilizing the state of the U-shape. Although the shape holding portion 121, the horizontal support side 122, the vertical support side 123, and the like are omitted here and are not shown, the support metal fitting 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 of the structural examples of the refractory heat insulating material supported by the support metal fittings.
As shown in FIG. 11, the refractory heat insulating material 110 is a U-shaped board in which three plate-shaped refractory materials 111, 112, and 113 are assembled in a U shape by gypsum boards 110A, 110B, and 110C. It is fixed to the inner peripheral surface and assembled, and a notch portion K into which the mullion 21 is fitted is formed.

Specifically, on both side surfaces of the plate-shaped refractory material 111 in the longitudinal direction of the mullion 21 and in contact with the side surface on the floor slab 10 side, the plate-shaped refractory material 112 and the plate-shaped refractory material 112 along the longitudinal direction of the plate-shaped refractory material 111. 113 is arranged.

The plate-shaped refractory materials 112 and 113 are arranged so as to be perpendicular to the lateral direction of the plate-shaped refractory material 111 from both side surfaces of the plate-shaped refractory material 111. As a result, a U-shaped body is formed by the three plate-shaped refractory materials 111, 112, and 113.

Three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are placed on the outside, and three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are placed on the outside. The gypsum boards 110A, 110B, and 110C are arranged on a U-shape so as to cover and adhere to each other from the outside.

The three plate-shaped refractory materials 111, 112, and 113 arranged in a U-shape are fixed to the gypsum boards 110A, 110B, and 110C assembled in a U-shape by a plurality of screws 110D.

Specifically, the screw 110D is screwed into the gypsum boards 110A, 110B, and 110C assembled in a U shape from arbitrary positions inside the three plate-shaped refractory materials 111, 112, and 113. It is fixed by.

The gypsum boards 110A, 110B, and 110C assembled in a U-shape are fixed to the peripheral surface of the refractory heat insulating material 110 assembled in a U-shape, so that the U-shaped plate 119 has a shape-retaining portion. It can play the role of 121, and the refractory heat insulating material 110 can be supported by the support metal fitting 120 while stabilizing the assembled U-shaped state.

Further, by fixing the gypsum boards 110A, 110B, and 110C having fire resistance to the peripheral surface of the fire resistant heat insulating material 110, the fire resistance of the fire resistant heat insulating device 100 can be further improved. Although the shape holding portion 121, the horizontal support side 122, the vertical support side 123, and the like are omitted here and are not shown, the support metal fitting 120 can be fixed to the structure in any shape.

FIG. 12 is a rear view and a plan view showing one of the formation examples of forming the refractory heat insulating material in a U shape.
7 to 11 show an example of forming a U-shape by assembling a plate-shaped refractory material, but FIG. 12 shows a flexible plate-shaped refractory heat insulating material 110E bent. An example of forming a U-shape by doing this will be described.

The refractory heat insulating material 110E is a refractory material having sufficient flexibility to withstand bending. The refractory heat insulating material 110E has a V-shaped groove formed along the longitudinal direction of the refractory heat insulating material 110E at a portion corresponding to the inner corner portion when the refractory heat insulating material 110E is bent into a U shape.

As a result, even if the refractory heat insulating material 110E is bent into a U shape, the inner corners are not overcrowded and the inner corners are formed at right angles. As a result, the refractory heat insulating material 110E is formed in a U shape without being deformed, and the mullion 21 can be correctly fitted inside.

In this way, by bending one plate-shaped refractory heat insulating material 110E having flexibility into a U shape to form the fireproof heat insulating material 110, it is compared with the process of assembling three plate-shaped refractory materials. Since the process of assembling and fixing each plate-shaped refractory material is omitted, the manufacturing process can be shortened.

Further, the plate-shaped refractory heat insulating material 110E having one flexibility includes the fixing bolt 114, the U-shaped plate 117, 119, the gypsum board 110A, 110B, 110C, etc. as described with reference to FIGS. 7 to 11. It may be formed in combination, and the shape holding portion 121 can also be arranged at an arbitrary place.

FIG. 13 is a rear view, a plan view, and a left side view showing one of the installation examples in which a flexible plate-shaped refractory heat insulating material is installed on the peripheral surface of a mullion.
As shown in FIG. 13, the refractory heat insulating material 110F is a refractory material having sufficient flexibility and flexibility to withstand bending, and is wound around the peripheral surface of the mullion 21 to form the mullion 21. It covers.

Tapered portions T are formed at both ends of the fireproof heat insulating material 110F so that both ends of the fireproof heat insulating material 110F are in close contact with the wall material 20 when the fireproof heat insulating material 110F is wound around the mullion 21.
When the refractory heat insulating material 110F is wound around the mullion 21, the refractory heat insulating material 110E shrinks on the inner surface of the refractory heat insulating material 110F, and the refractory heat insulating material 110F extends on the outer surface of the refractory heat insulating material 110E. For this reason, there is a difference in expansion and contraction between the inner surface and the outer surface of the refractory heat insulating material 110F, so that the end portion of the refractory heat insulating material 110F cannot be in close contact with the wall material 20.

Therefore, tapered portions T are formed at both ends of the refractory heat insulating material 110F so that the width of the inner surface of the refractory heat insulating material 110F is shortened. As a result, the inner surface of the bent fireproof heat insulating material 110F is shortened, and when the fireproof heat insulating material 110F is wound around the mullion 21, both ends of the fireproof heat insulating material 110F can be brought into close contact with the wall material 20.

Further, a shape retaining portion 121B is provided on the outer surface of the refractory heat insulating material 110F. The shape-retaining portion 121B is formed by a main trunk portion 121C arranged at the center of the fireproof heat insulating material 110F along the longitudinal direction of the fireproof heat insulating material 110F, and a plurality of branch portions 121D branched to the left and right from the main trunk portion 121C. Has been done.

The shape-retaining portion 121B is formed of a metal plate or the like formed with a strength that allows it to be bent and fixed in a bent state, and the shape-retaining portion 121B and the refractory heat insulating material 110F are fixed with an adhesive. There is.

The lower end of the shape holding portion 121B is provided with a folded portion 121F for preventing the refractory heat insulating material 110F from falling from the shape holding portion 121B, and the lower end of the main trunk portion 121C is folded upward in advance. It has been.

In this way, the refractory heat insulating material 110F can hold the shape of the shape-retaining portion 121B in a state of being bent according to the shape of the mullion 21 at the site, so that it can be easily placed along the mullion 21 from the lower floor even in a narrow work space. The refractory heat insulating material 110F can be attached to a desired location.

When the fireproof heat insulating material 110F is wound around the mullion 21 and installed, the shape holding portion 121B is adhered to the plate-shaped fireproof heat insulating material 110F, and then the fireproof heat insulating material 110F and the shape holding portion 121B are bent. Wrap it around the stand 21 and fix it. Although the shape holding portion 121, the horizontal support side 122, the vertical support side 123, and the like are omitted here and are not shown, the support metal fitting 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 holding portion is fixed to the refractory material.
As shown in FIG. 14, an arbitrary number of shape holding portions 121A can be arranged and fixed at an arbitrary position of the refractory heat insulating material 110.

Further, a plurality of shape holding portions 121A can be connected by the main trunk material 121G. By connecting the plurality of shape holding portions 121A with the main trunk material 121G in this way, the refractory heat insulating material 110 can be easily fitted into the mullion 21 while maintaining the vertical state even in a place where the work space is narrow.

10 Floor slab 20 Wall material 21 Square 24 Spandrel panel 30 Fire-resistant interlayer material 70 Steel beam material 100 Fire-resistant heat insulating material 110 Fire-resistant heat insulating material 120 Support bracket 121 Shape holding part 121A Shape holding part 122 Horizontal support side 123 Vertical support side 124 Bolt G Inter-layer gap K Notch

Claims (13)

In a fireproof insulation device that insulates fireproofly at the spandrel part of a building with a metal curtain wall with a fireproof panel installed between the mullion.
A refractory heat insulating material formed in advance below the floor slab of the building to cover the exposed part of the mullion on the indoor side of the building.
A shape-retaining portion for maintaining the coating shape of the refractory heat insulating material, and
A support means for supporting the refractory heat insulating material in a state of covering the exposed portion and preventing the fireproof heat insulating material from falling.
A refractory insulation device characterized by being equipped with. The refractory heat insulating material is
A plate-shaped refractory heat insulating material on both sides that covers the exposed portion by sandwiching it from both sides along the longitudinal direction of the mullion.
It is provided with a plate-shaped one-sided refractory heat insulating material that covers the exposed portion from the indoor side of the building along the longitudinal direction of the mullion.
The shape holding portion is
It is a U-shaped fixing means for fixing the two-sided fire-resistant heat insulating material and the one-sided fire-resistant heat insulating material in a U-shape.
The fireproof heat insulating device according to claim 1. The U-shaped fixing means is
A fixing bolt that is inserted and fastened into a through hole provided by communicating the refractory heat insulating material on both sides and the refractory heat insulating material on one side.
2. The refractory heat insulating device according to claim 2. The U-shaped fixing means is
An adhesive member provided at a portion where the fire-resistant heat insulating material on both sides and the fire-resistant heat insulating material on one side are in contact with each other.
2. The refractory heat insulating device according to claim 2. The adhesive member is
Being an inorganic adhesive made from sodium silicate,
4. The refractory heat insulating device according to claim 4. The U-shaped fixing means is
It is a U-shaped plate that is formed in a U-shape in advance.
The two-sided fire-resistant heat insulating material and the one-sided fire-resistant heat insulating material are
Being in close contact with the inside or outside of the U-shaped plate,
2. The refractory heat insulating device according to claim 2. The U-shaped plate is
Being formed of plate-shaped gypsum board,
The fireproof heat insulating device according to claim 6. The refractory heat insulating material is
Instead of the two-sided refractory insulation and the one-sided refractory insulation,
It is a planar refractory heat insulating material that has flexibility and has grooves along the longitudinal direction formed in the inner corners when it is bent into a U shape over the mullion.
2. The refractory heat insulating device according to claim 2. The refractory heat insulating material is
A flexible refractory heat insulating material having flexibility and having tapered portions whose both ends are inclined from the outer surface to the inner surface when the mullion is bent over the mullion.
The shape holding portion is
Being a bent shape holding metal fitting that maintains the shape by bending the flexible fireproof heat insulating material.
The fireproof heat insulating device according to claim 1. The bent shape holding metal fitting is
The flexible refractory heat insulating material and the main trunk provided along the longitudinal direction of the mullion,
A plurality of branches branched from the main trunk to both sides,
9. The refractory heat insulating device according to claim 9. A folded portion in which the lower end of the main trunk portion is bent upward with the flexible fireproof heat insulating material sandwiched between them to prevent the flexible fireproof heat insulating material from falling.
10. The refractory heat insulating device according to claim 10. In the fireproof insulation method of fireproof insulation at the spandrel part of the building by the metal curtain wall with the fireproof panel installed between the mullion.
A process in which a refractory heat insulating material is formed in a shape that covers an exposed portion of the mullion on the indoor side of the building in advance below the floor slab of the building.
The step of holding the coating shape of the refractory heat insulating material by the shape holding portion, and
A step of supporting by a support means to prevent the refractory heat insulating material from falling while covering the exposed portion, and a step of supporting the fireproof heat insulating material.
A refractory insulation method characterized by providing. In a fire-resistant insulation structure that insulates fire-resistantly at the spandrel part of a building with a metal curtain wall with a fire-resistant panel installed between the mullion.
A refractory heat insulating material formed in advance below the floor slab of the building to cover the exposed part of the mullion on the indoor side of the building.
A shape-retaining portion for maintaining the coating shape of the refractory heat insulating material, and
A support means for supporting the refractory heat insulating material in a state of covering the exposed portion and preventing the fireproof heat insulating material from falling.
A fireproof insulation structure characterized by being equipped with.

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