JP3190262B2 - Fireproof construction method for unit building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof construction method for fireproofing a frame of a unit building.

[0002]

BACKGROUND ART When a unit-type building constructed by combining a plurality of building units exceeds a certain height or is used for an apartment, etc., the framework of the unit-type building is legally required to be a fireproof covering material. And must be fire-resistant. A conventional structure in which a frame of a unit-type building is covered with a fire-resistant coating material is disclosed in, for example, Japanese Patent Publication No. Sho 51-14.
806 and JP-A-64-39447.
In these conventional fire-resistant structures, the fire-resistant coating is made of a hard surface material such as a silica (calcium silicate) plate, and the fire-resistant coating made of the hard surface material is applied to the outer surfaces of beams, columns, etc., which are the framework of the unit-type building. I was attached.

[0003]

In the beam of the unit building, a connecting member such as a small beam for attaching a ceiling material, a joist for attaching a floor material, and a brace for reinforcement, for example, is formed at an angle with the beam. Somehow joined. If the beam is coated with a fire-resistant coating to make it a fire-resistant structure, the beam must be coated with a fire-resistant coating so that no gap is created at the joint end of the joining member joined to the beam. However, when a conventional hard face material such as a scalp board is used as the refractory coating material, the hard face material is cut and formed into a shape and size that exactly match the dimensions of the joining end of the joining member. Must be attached to the beam, or a plurality of hard face materials divided and formed as small pieces must be attached to the beam, and the work of coating the refractory coating material requires much labor and time.

SUMMARY OF THE INVENTION An object of the present invention is to facilitate the operation of coating a frame of a unit building to which a joining member is joined at an angle with a fire-resistant coating material, thereby achieving a simplification of the operation. An object of the present invention is to provide a fireproof construction method for a unit building.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a unit building having a skeleton of a unit building which is covered with a fireproof covering material around a joint end of a joining member joined at an angle to the skeleton. A fireproof construction method, in which a notch that penetrates the fireproof covering material in a flexible fireproof covering material in an arrangement corresponding to the joint end and is smaller than the joint end is formed in this notch. The present invention is characterized in that the joint end of the joint member is penetrated, and the refractory coating material is stretched along the framework.

The joining end is a bracket for receiving a joining member. The bracket is attached to the skeleton in advance, the bracket is passed through the notch, and the refractory coating material is attached to the skeleton. The joining member can be joined. The joining end is an end of the joining member, the end of the joining member is passed through the notch, and then the end of the joining member is joined to the skeleton, and then the refractory coating material is attached to the skeleton. It may be stretched.

[0007] In the above, the flexible fire-resistant coating material is made of, for example, rock wool, ceramic fiber or the like. Further, the framework of the unit-type building is, for example, a beam, a pillar, or the like of the building unit constituting the unit-type building.

Further, the joining member is a small beam for attaching a ceiling material, a joist for attaching a floor material, a brace for reinforcement, and a mounting hardware for attaching a shutter case or the like to a building unit. The joining end of the joining member may be the end of the joining member itself, or may be a bracket or the like attached to the end of the joining member to join the joining member to the framework. The notch formed in the refractory coating material may be, for example, a cut or an opening. In short, the joining end of the joining member can be inserted, and the joining end is formed of a flexible refractory covering. Any material can be used as long as it can be surrounded without any gap by the elastic fastening action.

In the present invention, the work of covering the frame of the unit building with the refractory covering material while surrounding the joining end of the joining member is performed by joining the joining member to the notch formed in the refractory covering material. It is only necessary to insert the end portion to cover the skeleton with the refractory covering material, and the covering operation can be easily performed. Further, since the refractory coating material has flexibility, when the joining end portion of the joining member is inserted into the cutout portion, the joining end portion of the joining member is surrounded without any gap by the elastic fastening action of the refractory covering material.

[0010]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a skeleton of a building unit A which is a component of a unit-type building. This skeleton is composed of four pillars 1-4 at four corners, four upper beams 5-8 connecting the upper ends of the columns 1-4, and four lower beams connecting the lower ends of the columns 1-4. The pillars 1 to 4 are made of a metal square tube material, and the upper beams 5 to 8 and the lower beams 9 to 12 are made of a metal channel material. A plurality of small beams 13 are bridged between the two opposing upper beams 5 and 7. The frame of the building unit A is assembled in a factory, and in the factory, a work of attaching a ceiling material to the lower surface of the small beam 13 and a work of attaching facilities such as an outer wall material and a construction material to the building unit A are performed.

A unit building is constructed by combining a plurality of building units A produced in a factory at a construction site as described above, and the pillar 1 which is a framework of the building unit A is constructed.
4, upper beams 5 to 8, and lower beams 9 to 12 form the framework of the unit-type building. Further, the small beam 13 is a joining member in which the ends are joined to the upper beams 5 and 7 at an angle of 90 degrees.

FIG. 2 is an exploded perspective view showing the specific structure of the upper beam 7 to which one end of the small beam 13 is joined, and the upper beam 5 has the same structure. A contact member 14 is attached to the opening side of the upper beam 7, and the contact member 14 forms an inner side surface 7A of the upper beam 7. This inside surface 7
At A, a plurality of brackets 15 made of a plate-like metal material are joined at equal pitches, that is, at the same interval as the small beams 13, and the small beams 13 are connected to the respective brackets 15. A flexible refractory coating 16 is provided between the upper beam 7 and the small beam 13, and the refractory coating 16 is made of, for example, Flex Guard (trade name, manufactured by Nichias Corporation). It is made of a composite material in which wool, ceramic fiber, nonwoven fabric, and turtle net are laminated.

A plurality of cuts 17 in the vertical direction, which are notches, are formed in the refractory coating 16 in the longitudinal direction of the upper beam 7, and these cuts penetrate the refractory coating 16. The vertical dimension of each cut 17 is equal to or smaller than the maximum vertical dimension of the bracket 15, so that the bracket 15 can be inserted into the cut 17 and the refractory coating 16 can be wound around the upper beam 7.

Since a plurality of types of building units having different lengths are produced, and in these building units, the intervals of the small beams are different, a cut 17 is formed in the refractory coating material 16 and each interval of the small beams of these building units is used. The brackets 15 are inserted into the cuts 17 corresponding to the positions of the small beams of the building unit among the cuts 17, so that the same fireproof covering material 16 is commonly used for each building unit. You may make it usable.

When the small beam 13 is joined to the upper beam 7, first, the refractory coating material 16 is applied to the inner surface 7A of the upper beam 7 while inserting the bracket 15 into the cut 17, and then, as shown in FIG. The end of the wooden or metal beam 13 is connected to a bracket 15 projecting from the bracket. Fireproof coating material 1
6 is fixed to the upper beam 7 and the contact member 14 by a pin 18 with a washer 18A driven from the outside of the refractory coating 16, and the lower end 16A of the refractory coating 16 is attached to the lower surface 7B of the upper beam 7. Exterior wall material 19 made of lightweight cellular concrete (ALC) which is applied and has fire resistance of the building unit
Is fixed with a pin 18.

The upper end of the refractory coating material 16 above the cut 17 extends beyond the upper beam 7, and this upper end is an extension 16B.

The above operation is performed in a factory, and FIG.
Shows a state where the building unit A2 is placed on the building unit A1 at the construction site of the unit-type building on which the above operation has been performed in the factory. An external wall material 20 and a floor material 21 made of ALC are attached to the building unit A2. The extending portion 16B of the refractory coating material 16 that has hung downward is extended upward, and this extending portion 16B is attached to the lower beam 1 of the building unit A2.
Along the inner surface 11A by the one contact member 22 and the lower surface of the flooring material 21, it is fixed by the pin 18 with the washer 18A. Between the outer wall material 20 and the floor material 21,
A refractory coating 23 made of the same material as that described above is inserted, and the refractory coating 23 is fixed to the upper surface of the lower beam 11 with the pins 18.

Thus, the upper beam 7 of the building unit A1 and the building unit A2, which are the framework of the unit-type building,
The lower beam 11 is surrounded by the fireproof coating materials 16 and 23, the outer wall materials 19 and 20 having fire resistance, and the floor material 21, and the upper beam 7 and the lower beam 11 have a fireproof structure.

According to the above embodiment, even if the small beam 13 is joined to the upper beam 7 at a right angle, the refractory coating material 16 for covering the upper beam 7 to make the upper beam 7 a fire-resistant structure. In
Since the cut 17 for inserting the bracket 15 which is the joining end 13A of the small beam 13 to be joined to the upper beam 7 is formed, the upper beam 7 is The coating material 16 can be coated, and this coating operation is performed by forming a cut 17 in the refractory coating material 16 and fixing the refractory coating material 16 to the upper beam 7 while inserting the bracket 15 into the cut 17. As a result, work can be simplified. In addition, the refractory coating material 16
Is made of a flexible material, the bracket 15 inserted into the cut 17 is
The upper beam 7 is securely covered with the refractory coating material 16 because the refractory coating material 16 contacts the inner surface of the cut 17 by the elastic tightening action of the bracket 15 and the bracket 15 is surrounded by the refractory coating material 16 without forming a gap around the bracket 15. Can be.

FIGS. 5 and 6 show another embodiment of the present invention.
As shown in FIG. 5, in this embodiment, a plurality of contact members 34 are joined at intervals on the opening side of the upper beam 7, and a plate-shaped bracket is attached to the tip of the wooden or metal beam 33. 35 is attached at right angles to the beam 33. The bracket 35 is inserted into the upper beam 7 from between the contact members 34 and is connected to the inner surface of the upper beam 7 by welding or the like as shown in FIG. The end of the small beam 33 to which the bracket 35 is attached is a joining end 33A to be joined to the upper beam 7.

As shown in FIG. 5, the refractory coating material 3 having flexibility
A plurality of openings 37, which are notches, are formed in 6, and the opening areas of these openings 37 are smaller than the cross-sectional area of the small beam 33. When joining the small beam 33 to the upper beam 7, first, the opening 37 is pushed open, and the bracket 35 is
Then, the joining end 33A of the small beam 33 is inserted, and the bracket 35 is connected to the inner surface of the upper beam 7. Thereafter, as in the case of the above-described embodiment, as shown in FIG. 6, the fireproof covering material 36 is fixed to the upper beam 7 and the outer wall material 19 with the pin 18 with the washer 18A. Beam 1
1. Fix to flooring 21.

Also in this embodiment, even if the small beam 33 as a joining member is joined to the upper beam 7 which is a framework of the unit type building at a right angle, the opening 37 formed in the fireproof covering material 36 is provided.
By inserting the joining end 33A of the small beam 33 into the upper beam 33, the operation of coating the refractory coating material 36 on the upper beam 33 can be easily performed, and this operation can be simplified. Also,
The joining end 33A of the small beam 33 inserted into the opening 37 is
Due to the elasticity of the flexible fire-resistant coating material 36, it comes into contact with the inner surface of the opening 37, and the joint end 33A is surrounded by the fire-resistant coating material 36 without leaving any gap around it. Fire resistance can be reliably obtained.

In order to fix the refractory coating material to the upper beam or the like, a pin is erected in advance on the upper beam or the like by welding, and the refractory coating material is pushed into the pin from the outside so that the tip of the pin is made of the refractory coating material. After projecting from the surface and inserting a washer into the protruding tip of the pin, the washer may be locked by bending the tip of the pin.

In each of the embodiments described above, the case of the upper beam to which the small beam is joined is described. However, the present invention can be applied to the lower beam to which the joist is joined.

Further, the frame covered with the refractory coating material is not limited to the upper beam and the lower beam, but may be, for example, a column, and the joining member which is joined to the frame at an angle may be a reinforcing brace. Further, for example, a bracket for connecting the shutter case to the frame may be used.

[0026]

According to the present invention, the refractory covering material for covering the framework of the unit building is made of a flexible material, and the refractory covering material is provided with cutouts to join the joining members of the joining member to the framework. Since the portion is inserted, even if the joining member is joined to the skeleton at an angle, the work of coating the skeleton with the refractory coating material can be easily performed, and the workability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a framework of a building unit which is a component of a unit-type building according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an upper beam, a small beam, and a refractory coating material shown in FIG. 1 before assembly.

FIG. 3 is a side sectional view showing a state after the assembly in FIG. 2;

FIG. 4 is a side sectional view showing a state after completion of work at a construction site of the unit building.

FIG. 5 is a view similar to FIG. 2 showing another embodiment.

FIG. 6 is a view similar to FIG. 4 in the case of another embodiment of FIG. 5;

[Explanation of symbols]

 5-8 Upper beam 13, 33 as a frame of building unit Small beam 13A, 33A as joint member 15, 35 Bracket 16, 36 Fireproof covering material 17 Notch as cutout 18 Pin 18A Washer 37 At notch An opening

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-57843 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/94 E04B 1/348

Claims (3)

(57) [Claims] 1. A fire-resistant construction method for a unit-type building, wherein a fire-resistant coating material is covered on a frame of the unit-type building by surrounding a joint end of a joint member joined at an angle to the frame. A notch smaller than the joining end is formed through the refractory covering in an arrangement corresponding to the joining end in a fireproof covering having a property, and the joining end of the joining member is formed in the notch. A fireproof construction method for a unit-type building, wherein the fireproof covering material is stretched along the framework while being penetrated. 2. The fireproof construction method for a unit building according to claim 1, wherein the joint end is a bracket for receiving a joint member, and the bracket is attached to the frame in advance, and the joint is formed in the notch. A fireproof construction method for a unit-type building, comprising passing a bracket and attaching the refractory covering material to the skeleton, and thereafter joining the joining member to the bracket. 3. The fireproof construction method for a unit building according to claim 1, wherein the joining end is an end of a joining member, and the notch is passed through an end of the joining member. A method for fire-resistant construction of a unit-type building, comprising joining an end of a joining member to the skeleton, and then stretching the fire-resistant covering material to the skeleton.