JPH10185012A - Fire proof mounting fixture for integrally forming building frame part built by wet construction method and fire proof cylindrical body, and integral forming method employing aforesaid fire resistance mounting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire resistance cylindrical body mounting fixture for integrally forming a fire proof cylindrical body and a building frame part in a wet construction method, and an integral forming method employing the aforesaid fire resistance cylindrical body mounting fixture. SOLUTION: A fire proof cylindrical body mounting fixture and the integral forming method are provided, where the former is formed out of a core part 32 fitted and inserted in the inside of a fire resistance cylindrical body 38, and of one or two lid covering parts 34 that are set so as to be continuous to both the end surfaces or one end surface of the core part 32, and the latter indicates processes where the fire resistance cylindrical body 38 is fitted and inserted in the core part 32, lid covering parts 34 are fixed to forms 35, and the forms 35 and the mounting fixture 30 are removed out of a building frame part after placed concrete has been cured. By this constitution, the fire resistance cylindrical body 38 is surely assembled in the building frame part, and the fire resistance cylindrical body 38 is thereby prevented from being damaged and/or is prevented from being bonded to concrete. The mounting fixture 30, which is removed after concrete has been cured, causes no problem with fire protection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for piping a building body formed by a wet construction method, in which a fireproof cylinder disposed between the building body and the pipe is preliminarily installed in the building body. In order to bury it in, that is, to integrally form a fire-resistant cylinder with a building body of a wet construction method such as concrete, a fixture for attaching a fire-resistant cylinder to a formwork prior to placing concrete or the like, and The present invention relates to a forming method for integrally forming a building frame and a fire-resistant cylinder using the attachment.

[0002]

2. Description of the Related Art Generally, as shown in Article 112, paragraph 15 of the Enforcement Ordinance of the Building Standards Act in a building skeleton, equipment pipes must first be pierced through a floor or wall of a concrete skeleton, etc., which is a fireproof section of a fireproof structure. Holes are opened in the concrete body in advance, and the gap between the through hole and the pipe is filled with mortar or other non-combustible material and closed to prevent the spread of fire when a fire occurs after the pipe is laid.

For example, fireproof double-layer pipes conventionally used are used as water supply pipes, drainage pipes, ventilation pipes for ventilation, and power distribution pipes of buildings.

According to the prior art for piping this fire-resistant double-layer pipe to a floor or wall made of concrete or the like of a fire-prevention compartment in a building, that is, to a fire-prevention compartment, first, a through-hole is provided in the fire-prevention compartment, and the fire-resistant double-wall is provided in the through-hole. After disposing the layered pipe, a method has been adopted in which a gap around the refractory double-layered pipe in the through hole is filled with mortar or the like to block the spread of fire due to a fire.

When the gap is closed with a mortar or the like, it is necessary to apply a backing material to the wall and a fall prevention material to the back of the floor, which requires considerable labor. Need to be removed. Therefore, a cylinder made of non-combustible inorganic heat-insulating fiber described in JP-A-7-301373, that is, a fire-resistant cylinder is previously installed before concrete is cast, and then concrete is cast to form a fire-resistant cylinder. A method of burying in concrete has been proposed. According to this method, it is not necessary to close the gap with a mortar or the like at the time of new pipe installation, and at the time of pipe renewal, the old pipe can be removed and a new pipe can be installed simply by pulling and pulling the pipe from the fireproof cylinder. The operation of closing the gap and removing the mortar and the like is not required, and the construction period can be shortened and labor can be saved.

Referring to FIGS. 11 and 12, steps of a method of integrally forming a building body and a fire-resistant cylinder by a wet method using concrete or the like will be described as an example of conventional piping.

FIG. 11 is a process flow diagram showing the application of a fire-resistant cylinder to a concrete floor portion as an existing fire protection compartment. First, a through hole 10a penetrating the upper and lower surfaces of the concrete floor 10 is provided in the step a, and the bottom of the through hole 10a is closed with the fall prevention plate 12 as a step b. Next, as shown in step c, the fireproof cylinder 14 is installed on the fall prevention plate 12 at the bottom of the through hole 10a, and finally, in step d, the gap around the fireproof cylinder 14 is filled with mortar 16, and the building frame Then, the integral formation of the refractory cylinder is completed. Although not shown here, the fall prevention plate is later removed and a pipe is inserted inside the fireproof cylinder.

In the case where the building frame and the fire-resistant cylinder are integrally formed when a fire-prevention compartment is newly installed, the fire-resistant cylinder 14 is attached to the floor form 18 in step a, as shown in the process flow diagram of FIG.
Is fixed, and then concrete is poured in step b. When a fire-resistant cylinder is installed in the existing building frame (fireproof compartment) shown in FIG. 11, fixing of the fire-resistant cylinder 14 is not particularly required, but as shown in FIG.
4 is buried at the time of new construction of a fire protection compartment,
Need to be fixed.

The fixing of the fireproof cylinder to the mold is shown in FIG.
For example, as shown in FIG. 3, a wire 20 is circulated around the refractory cylinder 14, and three or four additional wires 20 each having a nail 22 at each end are connected to the circulating wire. A method is employed in which the fire-resistant cylinder 14 is fixed to the formwork, or is tied and fixed to the reinforcing bars with wires. Alternatively, as shown in FIG. 13B, the bottom of the fire-resistant cylinder 14 is fixed to the formwork with nails 24.

[0010]

However, FIG.
When the fire-resistant cylinder is fixed to the mold by the method (A), the fire-resistant cylinder is not firmly fixed to the mold, but is indirectly supported via a wire. Only. In other words, according to this method, the fire-resistant cylinder tends to easily fall over due to vibration during concrete placement or inadvertent stepping or kicking of the worker. FIG.
When performing the method (B), if the nail protrudes into the inner surface of the fire-resistant cylinder, there is a risk of damaging the pipe to be introduced later. Therefore, delicate work must be performed to prevent the nail from protruding into the inner surface. Must be difficult. Further, since the fire-resistant cylinder made of ceramic fiber as a main component is brittle and soft, a portion tied with a wire or a portion hit with a nail as shown in FIG. 13 is easily damaged.

Further, since piping is performed later so that no gap is formed in the hollow portion of the fire-resistant cylinder, it is necessary to protect the inner surface of the fire-resistant cylinder before the pipe is inserted. That is, in the method of FIG. 13, means for avoiding concrete from adhering to and solidifying on the inner surface and the end surface of the fire-resistant cylinder must also be given at the same time. However, the surface of the fire-resistant cylinder is brittle and soft, so that it is directly applied to the fire-resistant cylinder. It is difficult to protect by attaching a seal or the like.

Further, when a non-removable fixture is used after the concrete is cast, the fire prevention performance may be reduced depending on the material.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to easily and quickly attach a fire-resistant cylinder to a mold without damaging the fire-resistant cylinder body, and to provide a fire-resistant cylinder for casting concrete or the like. Buildings with wet construction methods, such as concrete, that prevent the cylinder from moving and falling, protect the inside and end surfaces of the fire-resistant cylinder, make it easy to remove fixtures after casting concrete, etc., and do not have fire protection problems It is an object of the present invention to provide a fire-resistant cylinder attachment for integrally forming a skeleton and a fire-resistant cylinder, and an integral forming method using the same.

[0014]

According to a first aspect of the present invention, there is provided a fireproof cylinder fitting for integrally forming a building frame and a fireproof cylinder by a wet method according to the first aspect of the present invention. A core part which is inserted into the inside of the hollow part and which is in whole or partial close contact with the inner wall thereof, is connected to both end faces or one end face of this core part, and is in close contact with the end face of the fireproof cylinder and the formwork. Since the core part constrains the fire-resistant cylinder around the core part and the lid part connected to this core part is fixed to the formwork, the fire resistance is maintained without shifting or loosening in the outer peripheral direction. While the cylinder and the formwork are fixed indirectly and securely,
After the concrete is cast, it can be pulled out of the fireproof cylinder together with the formwork. In addition, the end surface and the inner surface of the fire-resistant cylinder can be protected from concrete adhesion during concrete casting.

According to the second aspect of the present invention, there is provided a fire-resistant cylinder attachment for integrally forming a building frame and a fire-resistant cylinder by a wet construction method, wherein the core has a rod shape and the lid cover has a plate shape. Since it is formed, the outer periphery of the corresponding core part is in close contact with the inner wall of the hollow part of the fire-resistant cylinder, and the plate-shaped lid cover is in close contact with both end surfaces or one end surface of the mold and the fire-resistant cylinder. Body attachment and protection can be performed smoothly.

According to a third aspect of the present invention, there is provided a fire-resistant cylinder fitting for integrally forming a building frame and a fire-resistant cylinder by a wet construction method, wherein an end face of the core connected to a lid cover is provided; A concave portion or a convex portion that fits with each other is formed in the lid cover, and the lid cover can be easily attached to and detached from the core.

According to a fourth aspect of the present invention, there is provided a fire-resistant cylinder fitting for integrally forming a building frame and a fire-resistant cylinder by a wet construction method, wherein the core is formed in a hollow rod shape, and the lid cover is formed. Since the convex portion that fits into the hollow portion of the core portion is formed, the core portion is configured to be long in advance, and if the length is adjusted by cutting as necessary, the lid cover portion is It can be fitted to the core. In this case, use the same pipe as the pipe to be inserted into the fire-resistant cylinder or a general-purpose pipe with the same outer diameter,
It can be used as the above-mentioned core, and cost reduction becomes possible.

According to a fifth aspect of the present invention, there is provided a fire-resistant cylinder fitting for integrally forming a building frame portion and a fire-resistant cylinder of a wet construction method, the fitting being inserted into a hollow portion of the fire-resistant cylinder and having an inner wall. A pair of lid covering portions having a convex portion having a shape that is in whole or partial close contact with the periphery and having a shape that is in close contact with the end face and the formwork of the refractory cylinder, and connecting the lid covering portions to each other; And a shaft portion not in contact with the inner wall of the hollow portion. According to the fixture having this configuration, the fireproof cylinder is restrained without causing displacement or loosening in the axial direction and the outer peripheral direction, and the mold and the fireproof cylinder can be indirectly fixed. When the concrete is cast, the fittings protect the both end surfaces and the inner surface of the refractory cylinder from the adhesion of concrete in the same manner as described above, and are pulled out of the building frame after the concrete is cast. Further, the axial core resists external forces such as compression, tension, shear, and bending acting between the lid covers.

According to a sixth aspect of the present invention, there is provided a fire-resistant cylinder attachment for integrally forming a building frame and a fire-resistant cylinder by a wet construction method, wherein one end of a core and one lid cover are formed continuously and integrally. As a result, the core portion and the lid cover portion can be used immediately for mounting the fire-resistant cylinder, and the removal after casting the concrete can be easily performed integrally.

According to the fire-resistant cylinder fitting for integrally forming the building frame part and the fire-resistant cylinder of the wet construction method according to claim 7, since the lid-covering part is an integrally molded product, a plurality of lid covers are connected.
When arranging a plurality of fireproof cylinders side by side, it is possible to easily and collectively fix the fixture to the mold.

Further, according to the present invention, there is provided a fire-resistant cylinder fitting for integrally forming a building frame part and a fire-resistant cylinder of a wet construction method, wherein the fire-resistant cylinder body is provided on a surface of the lid cover part which is in close contact with the formwork. Since the building has a detaching means for removing the fixture, the building skeleton and the fireproof cylinder can be integrally formed, and the fixture can be easily taken out from the building skeleton using the clue as a clue.

According to a ninth aspect of the present invention, there is provided a method for integrally forming a building frame portion and a fireproof cylinder by a wet construction method, wherein the whole body is partially or entirely inserted into the hollow interior of the fireproof cylinder. Core part of the shape that is closely in contact with, and a lid cover that is connected to at least one end surface of the core portion and that is in close contact with the end surface of the refractory cylinder and the formwork, By using a fireproof cylinder fitting for integrally forming the building body and the fireproof cylinder, inserting the core into the hollow part of the fireproof cylinder, and connecting the lid cover to the core end face A step of restraining and protecting the fire-resistant cylinder with the fixture, and a step of indirectly fixing the fire-resistant cylinder to the form by fixing the lid cover of the fixture to the form, and a building body part. After integrally forming the refractory cylinder, a step of removing the fixture is performed. Thus, the work of attaching the fireproof cylinder using the fixture to the building frame and the removal of the fixture from the building frame are performed quickly.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the drawings, a fire-resistant cylinder fitting for integrally forming a building frame and a fire-resistant cylinder of a wet construction method according to the present invention and a method for integrally forming the same using the same will be described. An embodiment of the present invention will be described in detail.

The fire-resistant cylinder according to the present invention is made of non-combustible inorganic heat insulating fibers, and has a substantially circular inner cross section and a circular outer cross section as shown in FIG. Various types of cylindrical bodies such as polygons are used.

FIG. 1 shows an example of the construction of a fire-resistant cylinder fitting 30 for integrally forming a building frame and a fire-resistant cylinder of the wet construction method according to the present embodiment.

The attachment 30 mainly comprises a core portion 32 and a lid cover portion 34 connected to both end surfaces thereof. The core portion 32 is inserted into the hollow portion of the fire-resistant cylinder 38, and the core portion 32 is disposed in a state of being in close contact with the inner wall thereof. A lid cover 34 is provided to cover.

The core 3 inserted into the hollow portion of the fire-resistant cylinder 38
2 is formed in a rod shape having a cross-sectional shape corresponding to the hollow portion, and a lid cover portion 34 provided so as to be in close contact with the end surface of the fire-resistant cylinder 38 and the surface of the formwork 35 is formed in a flat plate shape. Is preferred. However, the cross section of the core part 32 may be formed in a polygonal shape or the like, and the annular inner surface of the refractory cylinder 38 may be mainly in contact with the corner part. Further, the lid cover 34 can be provided only on one end surface of the core. In addition, 35 is a formwork for the building frame.

FIG. 2 shows another example of the configuration of the fixture 30. The attachment 30 includes a cylindrical core 32 inserted into the hollow portion 38 a of the fire-resistant cylinder 38, and a disc-shaped lid cover 34 connected to both ends or one end of the core 32. The core 32 has a hollow rod shape, that is, a cylindrical shape, and the lid cover 34 has a projection 33. The cylindrical core portion 32 is made longer in advance, and can be cut in accordance with the thickness of the building frame. In this case, the cylindrical shape facilitates cutting, and the cut portion can be easily cut. The lid cover 34 having the convex portion can be fitted and used without being bound.
The lid cover portion 34 may or may not cover the end surface itself of the core portion 32 as long as it extends outwardly of the core portion 32. The shape of the lid cover 34 can be variously configured such as a circle and a square as shown in FIG. In addition, the form 3
It is desirable to provide a hole for inserting a nail or a screw 36 for fixing the screw 5.

FIG. 3 is a process flow chart for explaining each process of forming the fire-resistant cylinder 38 integrally with the building frame using the fixture 30 shown in FIG. For example, when construction is performed on the floor, first, as shown in step a, the lid cover 3
4 is fixed to a building frame 35 using nails or screws 36 at several places, and a projection 33 of a lid cover 34 is provided with a core 32.
Is fitted. At this time, the core 32 may be fitted to the lid cover and then fixed to the formwork 35.

Next, as shown in step b, the hollow portion 38a of the fire-resistant cylinder 38 is inserted into the core portion 32 of the fixture 30 fixed to the mold 35, and the other end of the core portion 32 is also inserted. Using a further lid cover 34, the projection 33 is fitted into the core 32.
At this time, if it is not necessary to support the fire-resistant cylinder 38 at both ends, it is possible to omit the further lid cover 34 described above.

Concrete is cast around the fireproof cylinder fixed as described above as shown in step c.
After the concrete is solidified and the embedding of the fire-resistant cylinder is completed, as shown in step d, the fixture 30 and the formwork 35 integrated therewith are separated from the building frame. Thus, the building skeleton in the state of FIG. D is completed.

Further, a fire-resistant cylinder 38 is attached to a building frame such as a wall.
Is applied to both ends of the lid cover 34 fire-resistant cylinder 38, for example, only the core 32 and one lid cover 34 are fixed to the mold 35, and the other lid cover 34 is attached to the mold 35. It is also possible to use it simply without being fixed. In this case, since the mounting fixture 30 is arranged substantially horizontally with respect to the floor surface, the fire-resistant cylinder 38 is mainly subjected to an external force in the vertical direction when the concrete is in a flowing state. And the refractory cylinder 38 are substantially in close contact with each other, so that the soft refractory cylinder 38 is protected from external force by the strength of the fixture 30.

In some cases, one lid cover 34 is fixed to a mold 35 for obtaining one surface of the wall, and the core 32 is fitted to the fixed lid cover. It is also possible to insert the fire-resistant cylinder body 38 into the core portion 32, fix the further lid cover portion 34 to another mold for obtaining the other wall surface, and fit the convex portion 33 into the core portion 32. is there. When the fireproof cylinder 38 is supported by using the lid cover 34 on both end surfaces of the core 32 in this manner,
As described above, the entire fire-resistant cylinder body is supported, and the inner surface of the fire-resistant cylinder body 38 is in close contact with the core portion 32, and both end surfaces that are easily damaged are in close contact with the lid cover portion 34. Be avoided. Furthermore, the fireproof cylinder 3
Since the inflow of concrete into the inside of the core 8 and the outside of the core portion 32 and the fixation thereof are avoided, the attachment 30 is smoothly removed, and the piping is damaged when the piping is inserted into the fire-resistant cylinder 38. Adverse effects can be avoided.

After the embedding of the refractory cylinder 38 is completed as described above, piping is performed through the hollow portion 38a of the refractory cylinder 38.

In the fixture 30 shown in FIG. 5, concave portions are provided at both ends of a solid rod-shaped core portion 32, and both lid cover portions 34 connected to both end surfaces of the core portion 32 have convex portions. Each part is provided. The core part 32 and the lid cover part 34 having this shape are fitted to each other, and the fireproof cylinder 38 is
Attach to Even with this configuration, the end face and the inner face of the fire-resistant cylinder 38 can be protected from concrete adhesion and the like. Also, steps may be provided on both end surfaces of the core portion 32 so that the end portion of the core portion 32 itself is formed in a protruding shape, and the end portion of the core portion 32 may be used by being fitted to a lid cover portion 34 having a concave portion having a shape to be fitted thereto. It is possible. With the fixture 30 having such a configuration, the lid cover 34 can be easily removed after the concrete is cast. Further, if the fitting between the core 32 and the cover is a screw type, the entire length of the fixture 30 can be finely adjusted according to the thickness of the building frame.

As shown in FIG. 6, it is also possible to use a fixture in which the core part 32 and one lid cover part 34 are integrally formed. According to this, when the fire-resistant cylinder 38 is attached, there is no need for a combination, and when the fire-resistant cylinder 38 is detached, it can be removed integrally, so that the labor of the construction can be saved. In addition, the fixture formed by integral molding is superior in strength in comparison with the fixture used in combination.

According to a further embodiment of the present invention, each of the refractory cylinder fittings 30 has a projection 33 having a shape which is in whole or partial close contact with the periphery of the inner wall of the refractory cylinder as shown in FIG.
And a pair of lid cover portions 34 having a shape close to the end face of the fire-resistant cylinder, the formwork, and a shaft portion 50 that connects these and does not contact the inner wall of the hollow portion 38a of the fire-resistant cylinder 38.
According to this configuration, the projections 33 of both lid cover portions 34 enter the inside from the end surfaces of the fire-resistant cylinder 38, and restrain the fire-resistant cylinder 38 without shifting or loosening in the axial and outer circumferential directions. Further, since the end surface of the fire-resistant cylinder 38 is completely covered by the lid cover 34, it is possible to prevent the concrete from adhering to the inner surface and the end surface of the fire-resistant cylinder 38 when the concrete is poured. The surface of the cover cover 34 opposite to the protrusion 33 is flat, and can be smoothly fixed to the mold.

A shaft 50 connects the two lids 34 and protects the refractory cylinder 38 from external forces such as compression, tension, shearing, bending and the like acting between the two lids 34. After the fire-resistant cylinder 38 is held by the fixture 30 and buried in the building skeleton, the entire fitting 30 is removed in the same manner as described above, so that the fire resistance of the building skeleton is maintained in its original state. Needless to say.

FIG. 8A shows an example of an integrally molded product in which a plurality of lid covers 34 are connected to each other, as shown in FIG.
4 shows a perspective view in the case where 4 is configured. In the case where a plurality of pipes need to be simultaneously formed at a predetermined location, using the plurality of lid covers 34 connected in this manner not only facilitates fixing to the formwork but also reduces the interval between the fireproof cylinder and the pipes. Since it can be set to a fixed value in advance, it is useful for labor saving in construction. It is effective to make a cut as shown in FIG. 8 (B) in the connection portion of each lid cover, because it is easy to cut when the lid cover 34 needs to be cut and used. Here, the lid cover 3
4 shows the connected state in parallel, but in addition to this, FIG.
The combination of the arrangement and size, such as one in which the lid covers 34 in the parallel state shown in FIG.

FIG. 9 is a sectional view showing the shape of the outer peripheral portion of the cover 34 of the fixture 30 according to the present embodiment. That is, as shown in an enlarged manner in FIG.
The radius from the center of the core 32 on the surface 34a facing the core 32 is formed shorter than the radius from the center of the core 32 on the bottom surface 34b.

According to the process described with reference to FIG.
The fire-resistant cylinder 38 is buried in the building frame using the method. When the fixture 30 is detached from the building frame after the concrete is hardened, the use of the detaching means A provides a clue to the detachment of the fixture, so that the work can be performed quickly.

Although it is possible to form a substantially horizontal outer periphery on the fire-resistant cylinder without giving an inclination to the outer periphery of the lid cover portion 34,
If the radius of the front surface 34a is longer than the radius of the bottom surface 34b, the casting of the concrete results in the lid cover portion 34 being embedded in the concrete, and the fixture 30 cannot be removed, which is disadvantageous.

FIG. 10 is a perspective view showing another embodiment of the removing means.

For example, as shown in FIG. 10, two adjacent depressions C are formed in a predetermined portion of the surface of the lid cover 34 having a plate shape or the like, which is not in contact with the core portion 32, so that the depressions C, C Is obtained, and this is used as a knob-shaped removing means B. For example, when the fire-resistant cylinder 38 is attached to the floor portion, one lid cover 34 covers the upper end surface of the fire-resistant cylinder 38 in a lid shape, and is not fixed to the formwork. Such detaching means B can be gripped with pliers or the like and pulled out. It is also possible to use the knob-shaped detaching means B and the detaching means A described in FIG. 9 by the inclination around the lid cover at the same time. Since the removing means B is obtained by forming the depression C in the flat plate, it is possible to use such a lid cover 34 so as to be in contact with the mold.

Next, the method of forming the building frame part and the refractory cylinder body integrally by the wet construction method can be carried out as described above with reference to FIG. 3, but first, one end described in FIG. The refractory cylinder 38 is fitted into the core 32 in a state of being connected to the lid cover 34, and a separate lid cover 34 is closely attached to the end surfaces of the refractory cylinder 38 and the core 32 which do not have the lid. Then, the fire-resistant cylinder 38 is restrained by the fixture 30 to protect the end surface and the inner surface thereof. Then, one lid cover 34 is fixed to the formwork 35 and, if necessary, the other lid cover 34 is provided. Can be performed in the order in which they are fixed to the mold 35. When this is performed on the floor, one lid cover 34 is fixed to the mold 35 serving as the bottom surface, and only the lid cover 34 is applied to the upper surface of the fireproof cylinder 38. Not required.

In this state, concrete is poured in such a manner that the building frame and the fire-resistant cylinder 38 are integrally formed, and after the concrete is solidified, the fixture 30 is removed.

The method for integrally forming the building frame of the wet construction method and the refractory cylinder using the fitting 30 of the present invention includes a fitting of another form as described in the above embodiment. It is also possible to use 30.

As is clear from the above description, the fixture 30 according to the present embodiment is removed after placing concrete. Therefore, even when the fixture 30 is made of a metal having high thermal conductivity, the fixture 30 does not remain inside the obtained building frame, so that it is not possible to form a heat transfer path in the event of a fire. Also, in the case of manufacturing with a synthetic resin, there is no fear of melting of the resin, generation of gaps in the melted portion, and formation of a fire path as a result. That is, the use of the attachment 30 does not reduce the fire resistance of the building frame.

In the above-described embodiment, only an example in which a fire-resistant cylinder is supported by using the fixture of the present invention when a new building skeleton is provided, but this can be used for an existing building skeleton. It is. At this time, the process a described in FIG.
Thereafter, the fixture 30 of the present invention is attached to the fall prevention plate, and the fire-resistant cylinder can be integrated in the same manner as in the above-described new construction of the building body. That is, it is possible to fill the gap with mortar or the like, remove the fall prevention plate and the fixture after solidification, and perform piping.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the invention. For example, it is conceivable that an adhesive is applied to the back surface of the lid cover portion 34 without using nails or screws 36 to fix the lid cover portion 34 to the formwork 35, and the cover cover portion 34 is fixed to the formwork 35 by adhesion. It is also advantageous to apply a release agent such as grease in advance to the contact surface between the concrete and the fixture 30 so that the fixture 30 can be easily removed from the building frame after the concrete is hardened.

The attachment 30 in this embodiment is made of metal,
It is composed of synthetic resin, rubber, wood or paper, or a combination thereof. If metal, synthetic resin or rubber is used, it is easy to mold the fitting 30 having a desired shape by a conventional molding technique, and because of its rigidity, the fireproof cylinder 38 disposed on the outer periphery of the core portion 32 must be securely formed. Can be supported. When paper is used, it is necessary to reduce the absorptivity of the paper and improve the strength of the paper in consideration of the fact that the fitting 30 is exposed to water during concrete casting. For this reason, it is also possible to use a paper material impregnated with a synthetic resin or the like. The attachment 30 made of wood or paper is easily and effectively disposed of by incineration when it becomes waste.

Further, the core 32 of the various attachments 30 is configured to have a length exceeding the thickness of a building frame such as any wall or floor that is expected in advance, and a length suitable for applying to each building frame. It is possible to cut into pieces.

In the above embodiment, the attachment 30 having the cover portions 34 on both end surfaces of the core portion 32 has been mainly described. However, the cover portion 34 may be provided only on one end surface of the core portion 32 as occasion demands. It is also possible to use a mounting tool 30 having.

The fixture 30 of the present invention and the method of integrally forming the building frame and the fire-resistant cylinder using the same are not limited to the case where the building frame is formed at a construction site, but also include a precast concrete plate and an ALC plate. It is also used when it is composed of building frame members, and can be formed in a factory or the like.

Further, the mounting tool 30 of the present invention and the integral forming method using the same are mainly intended to be applied to a fire protection compartment in a wet construction method. It is also applicable to the building frame.

[0056]

As described above, according to the fire-resistant cylinder fitting for integrally forming the building frame of the wet construction method and the fire-resistant cylinder according to the present invention and the integral forming method using the same, A fixture comprising a core portion and a lid covering portion connected to both end surfaces or one end surface of the core portion, and a fireproof cylinder body is inserted into the core portion by using the fixture, and the lid covering portion is fixed to the formwork. A method that consists of removing the lid cover after concrete casting, ensuring that the fire-resistant cylinder is integrated into the building skeleton and that the fixture can be easily removed after concrete casting Therefore, it does not have any problem in fire protection and can protect the inner surface and both end surfaces of the fire-resistant cylinder from damage and adhesion of concrete, thereby facilitating piping.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a configuration example of a fireproof cylinder fitting for integrally forming a building frame portion and a fireproof cylinder of the wet construction method of the present invention.

FIG. 2 is a perspective view showing an embodiment of a fire-resistant cylinder fitting for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method of the present invention.

FIG. 3 is a cross-sectional view showing each step of embedding a fire-resistant cylinder in a building frame using a fire-resistant cylinder fitting for integrally forming the building frame and a fire-resistant cylinder of the wet construction method of the present invention. It is a process system diagram.

FIGS. 4A and 4B show the shape of a lid cover as an embodiment of a fitting for integrally forming a building frame and a fire-resistant cylinder of a wet construction method according to the present invention, respectively. FIG.

FIG. 5 is a perspective view showing an embodiment of a fitting for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method according to the present invention.

FIG. 6 is a perspective view showing an embodiment of a fitting for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method of the present invention.

FIG. 7 is a schematic cross-sectional view showing another configuration example of a fixture for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method of the present invention.

FIG. 8A is a perspective view showing a lid cover configured as an integrally molded product in which a plurality of connectors are connected in the fixture of the present invention, and FIG. 8B is a cutaway view of a connecting portion of the lid cover. It is a partial view showing an example.

FIG. 9 shows the relationship between the formation of a recessed portion on the surface of a building frame when the fixture of the present invention is used, the shape of the end of each lid cover of the fixture, and the removal means A (b). (A) and (c) are cross-sectional views for explaining (c).

FIG. 10 is a perspective view showing one embodiment of a fixture having a detaching means B according to the present invention.

FIG. 11 is a process system diagram showing each process of installing a fire-resistant cylinder in an existing building frame by a conventional technique.

FIG. 12 is a process flow diagram showing each process of installing a fire-resistant cylinder by a conventional technique when a building frame is newly installed.

FIGS. 13A and 13B are perspective views showing a method for fixing a fireproof cylinder according to a conventional technique.

FIG. 14 is a perspective view showing an embodiment of a fireproof cylinder.

[Explanation of symbols]

 REFERENCE SIGNS LIST 30 mounting fixture 32 core part 34 lid cover part 35 formwork 38 fireproof cylinder 50 shaft

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shingo Naraoka 1043-1, Shimoyama, Onigatake-ku, Tsukuba-shi, Ibaraki Pref. Inside the Kumagaya Gumi Technical Research Institute Co., Ltd. No. 1 Inside Kumagaya Gumi Technical Research Institute Co., Ltd. (72) Inventor Kazuaki Morita 2nd Daifuku Kuwana-shi, Mie Hitachi Metals Co., Ltd.Kawana Plant (72) Inventor Kazumasa Onda 2nd Daifuku Kuwana-shi Mie Hitachi Metals Inside the Kuwana Plant of the Company (72) Inventor Keimichi Maeda Asano Slate Co., Ltd. 2--12-10 Shiba Daimon, Minato-ku, Tokyo

Claims (9)

[Claims] 1. A core part which is inserted into a hollow part of a fire-resistant cylinder body and which is in whole or partial close contact with an inner wall thereof, and which is connected to both end faces or one end face of said core part, And a lid cover that is in close contact with the end face and the mold. A fire-resistant cylinder fitting for integrally forming a building frame of a wet construction method and a fire-resistant cylinder. 2. The wet building method according to claim 1, wherein the core portion is formed in a rod shape, and the lid cover portion is formed in a plate shape. A fire-resistant cylinder body attachment for forming the target. 3. The method according to claim 1, wherein a concave portion or a convex portion to be fitted to each other is formed on an end face of the core portion connected to the lid cover portion and the lid cover portion. A fire-resistant cylinder fitting for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method according to the above description. 4. The core according to claim 1, wherein the core is formed in a hollow rod shape, and a convex portion is formed on the lid cover so as to fit into a hollow portion of the core. A fire-resistant cylinder fitting for integrally forming a building frame portion and a fire-resistant cylinder of the wet construction method according to claim 1. 5. A refractory cylinder having a convex portion which is inserted into a hollow portion of the refractory cylinder and which is in full or partial close contact with the periphery of an inner wall thereof, and which is in close contact with an end surface of the refractory cylinder and a mold. And a shaft part which connects the lid cover parts and has a shape which is not in contact with the inner wall of the hollow part of the fire-resistant cylinder body. And a fire-resistant cylinder fitting for integrally forming 6. The building frame of a wet construction method according to claim 1, wherein one end of the core portion or the shaft portion and one lid cover portion are formed continuously and integrally. A fire-resistant cylinder attachment for integrally forming the part and the fire-resistant cylinder. 7. The wet building method according to claim 1, wherein the lid cover is an integrally molded product in which a plurality of the lid covers are connected to each other. A fire-resistant cylinder body attachment for forming the target. 8. A removing means for removing the fire-resistant cylinder attachment after the building frame and the fire-resistant cylinder are integrally formed on the surface of the lid cover which is in close contact with the formwork. A fire-resistant cylinder attachment for integrally forming a building frame part and a fire-resistant cylinder of the wet construction method according to any one of claims 1 to 7. 9. A core part which is inserted into the hollow part of the fire-resistant cylinder body and which is in full or partial close contact with the inner wall thereof, is connected to both end faces or one end face of the core part, and And a lid cover portion in close contact with the end face and the formwork, and a fire-resistant cylinder fitting for integrally forming the building frame of the wet construction method and the fire-resistant cylinder body. A step of fitting and inserting the core into the hollow portion of the fire-resistant cylinder and connecting the lid cover to the end face of the core to restrain and protect the fire-resistant cylinder with a fixture; By fixing the cover to the formwork,
A step of indirectly fixing the fire-resistant cylinder to the formwork, and a step of removing the fixture after integrally forming the building frame and the fire-resistant cylinder, A forming method for integrally forming a skeleton and a fire-resistant cylinder.