JPH0657844A - Fire resistant structure for unit type building - Google Patents

Abstract

PURPOSE:To facilitate the work for covering the framework of a building unit to which a connecting member is connected at an angle with a fire resistant material. CONSTITUTION:A small beam 13 which is a connecting member can be bonded to an upper beam 7 which is the framework of a unit type building through a bracket 15. A slit 17 which is a notched part is formed on a flexible fire resistant cover material 16, the bracket 15 which is the connecting end part of the small beam 13 to the upper beam 7 is inserted to the slit 17 to cover the upper beam 7 with the fire resistant cover material 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure 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 or the like, the frame of the unit-type building is legally covered with a fireproof coating material. Must be covered with a fireproof structure. A conventional structure in which a frame of a unit type building is covered with a fireproof coating material is disclosed in, for example, Japanese Patent Publication No. 51-14.
No. 806 and JP-A-64-39447.
In these conventional fire-resistant structures, the fire-resistant coating material is made of hard face material such as silica (calcium silicate) plate, and the fire-resistant coating material made of this hard face material is applied to the outer surface of beams, columns, etc. that are the frame of a unit-type building. It was attached.

[0003]

The beam of a unit-type building has, for example, a beam for attaching a ceiling material or a joist for attaching a floor material, and a joining member such as a brace for reinforcement forms an angle with the beam. It is joined together. When coating a beam with a fireproof coating to make this beam a fireproof structure, the beam must be coated with a fireproof coating so that no gap is created at the joint end portion of the joint member joined to the beam. However, if a hard face material such as a conventional calcareous plate is used as the fireproof 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, so that the work of coating the fireproof coating material takes a lot of time and labor.

An object of the present invention is to facilitate the work of coating the frame of a unit-type building in which the joining members are joined at an angle with the fireproof coating, and to simplify the work. It is located to provide the fireproof structure of a unit building.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a unit building in which a frame of a unit building is surrounded by a joint end of a joint member joined at an angle to the frame to cover a fireproof coating. A fireproof structure, wherein the fireproof covering material has flexibility, and the joint end portion of the joining member is inserted into the notch formed in the fireproof covering material to cover the frame with the fireproof covering material. To do.

In the above, the flexible fireproof coating material is made of, for example, rock wool or ceramic fiber.

The frame of the unit type building is, for example, a beam, a pillar or the like of a building unit constituting the unit type building.

Further, the joining member is a beam for attaching a ceiling material, a joist for attaching a floor material, a brace for reinforcement, and an attachment metal object 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 a bracket or the like attached to the end of the joining member for joining the joining member to the skeleton. Further, the notch formed in the fireproof coating may be, for example, a cut, or may be an opening. In short, the joint end of the joining member can be inserted, and the joint end can be made of a flexible fireproof covering. Anything can be used as long as it can be surrounded without any gap by the elastic tightening action.

[0009]

[Function] The work of covering the joint end of the joint member on the frame of the unit type building while covering the joint end of the joint member is performed by inserting the joint end of the joint member into the notch formed in the refractory cover material. It is sufficient to cover the frame with the covering material, and the covering work can be easily performed. Further, since the fireproof covering 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 a gap by the elastic tightening action of the fireproof 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 building. This skeleton is composed of four pillars 1 to 4 at four corners, four upper beams 5 to 8 connecting the upper ends of the pillars 1 to 4, and four lower beams connecting the lower ends of the pillars 1 to 4. 9 to 12, the columns 1 to 4 are made of a metal rectangular 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 upper beams 5 and 7 facing each other. The skeleton of building unit A is assembled at the factory, and at the factory, beam 1
The work of attaching the ceiling material to the lower surface of 3 and the work of attaching the equipment such as the outer wall material and the work material to the building unit A are performed.

A unit type building is constructed by combining a plurality of building units A produced in this way at the construction site, and the pillar 1 which is the framework of the building unit A.
The upper beams 5 to 8 and the lower beams 9 to 12 form a frame of a unit-type building. The beam 13 is a joining member in which the ends are joined to the upper beams 5 and 7 at 90 degrees.

FIG. 2 is an exploded perspective view showing a specific structure of the upper beam 7 side to which one end of the beam 13 is joined, and the upper beam 5 side has the same structure. A pad member 14 is attached to the opening side of the upper beam 7, and the pad member 14 forms an inner surface 7A of the upper beam 7. This inner surface 7
A plurality of brackets 15 made of a plate-shaped metal material are joined to A at equal pitches, that is, at the same intervals as the beamlets 13, and the beamlets 13 are coupled to the respective brackets 15. A flexible fireproof coating 16 is provided between the upper beam 7 and the beam 13, and the fireproof coating 16 is made of, for example, Flexguard (trade name, manufactured by Nichias Co., Ltd.), which is locked in order. It is made of a composite material made by laminating wool, ceramic fiber, non-woven fabric, and hexagonal wire mesh.

A plurality of vertical cuts 17, which are notches, are formed in the fire-resistant coating material 16 in the longitudinal direction of the upper beam 7, and the cuts 17 penetrate the fire-resistant coating material 16. The vertical dimension of each cut 17 is equal to or smaller than the maximum vertical dimension of the bracket 15, and the bracket 15 can be inserted into the cut 17 to wind the fireproof coating material 16 around the upper beam 7.

Since a plurality of building units having different lengths are produced, and the intervals between the beam beams are different in these building units, a break 17 is formed in the fireproof coating material 16 at each interval between the beam beams in these building units. A large number of them are formed in correspondence with each other, and the brackets 15 are inserted into the cuts 17 of the cuts 17 that correspond to the positions of the beam of the building unit. You may be able to use it.

When joining the beam 13 to the upper beam 7, first, the bracket 15 is inserted into the cut 17, the fireproof coating material 16 is applied to the inner surface 7A of the upper beam 7, and then the cut 17 is formed as shown in FIG. The ends of the wooden or metal beam 13 are connected to the bracket 15 protruding from the beam 15. Fireproof coating 1
6 is fixed to the upper beam 7 and the abutting member 14 by a pin 18 with a washer 18A that is driven in from the outside of the fireproof coating material 16, and the lower end portion 16A of the fireproof coating material 16 is attached to the lower surface 7B of the upper beam 7. Exterior wall material made of lightweight aerated concrete (ALC) that has fire resistance of the building unit while being applied
It is fixed with a pin 18 to.

The upper end of the refractory covering 16 above the cut 17 extends beyond the upper beam 7, and this upper end serves as an extension 16B.

The above work is carried out in the factory, as shown in FIG.
Shows a state in which the building unit A ₂ is placed at the construction site of a unit-type building on the building unit A _{1 in which} the above work is performed in the factory. An ALC outer wall material 20 and a floor material 21 are attached to the building unit A ₂ . The downward extending portion 16B of the fireproof covering 16 is extended upward, and this extending portion 16B is the lower beam 1 of the building unit A _2.
It is fixed along the inner side surface 11A by the contact member 22 of No. 1 and the lower surface of the floor material 21 by the pin 18 with the washer 18A. A fireproof coating material 16 is provided between the outer wall material 20 and the floor material 21.
A fireproof coating material 23 made of the same material as the above is inserted, and the fireproof coating material 23 is fixed to the upper surface of the lower beam 11 by a pin 18.

As a result, the upper beam 7 of the building unit A ₁ and the building unit A ₂ 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, the upper beam 7 and the beam 1 are attached to the upper beam 7.
Even if 3 is joined at a right angle, the fire-resistant coating material 16 for covering the upper beam 7 to make the upper beam 7 a fire resistant structure has a joining end portion 13A of the beam 13 joined to the upper beam 7. Since the cut 17 for inserting the bracket 15 is formed, it becomes possible to coat the upper beam 7 with the fireproof coating material 16 while surrounding the bracket 15 with the fireproof coating material 16. For the work, it is sufficient to form the cut 17 in the fireproof coating 16 and fix the fireproof coating 16 to the upper beam 7 while inserting the bracket 15 into the cut 17.
The work can be simplified. Further, since the fireproof coating material 16 is formed of a flexible material, the bracket 15 inserted in the cut 17 comes into contact with the inner surface of the cut 17 due to the elastic tightening action of the fireproof coating material 16, and the periphery of the bracket 15 is surrounded. Since the fireproof coating material 16 surrounds the bracket 15 without forming a gap in the upper beam 7, the upper beam 7 can be reliably coated with the fireproof coating material 16.

5 and 6 show another embodiment of the present invention. As shown in FIG. 5, in this embodiment, a plurality of pad members 34 are joined to the opening portion side of the upper beam 7 at intervals, and a plate-shaped bracket is attached to the tip of the wooden or metal beam 33. 35
Are 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 joined to the inner surface of the upper beam 7 by welding or the like as shown in FIG. 6, so that the beam 33 is joined to the upper beam 7. Has become
The end portion of the beam 33 to which the bracket 35 is attached is a joint end portion 33A that is joined to the upper beam 7.

As shown in FIG. 5, the fireproof coating material 3 having flexibility.
A plurality of openings 37, which are notches, are formed in 6 and the opening area of these openings 37 is smaller than the cross-sectional area of the beam 33. When the small beam 33 is joined to the upper beam 7, first, the opening 37 is expanded and the bracket 35 is inserted into the opening 37.
And the joint end 33A of the beam 33 is inserted, and the bracket 35 is coupled to the inner surface of the upper beam 7. Thereafter, as in the case of the embodiment, as FIG. 6, the fireproofing material 36 upper beam 7, fixed with a pin 18 of the washer 18A to the outer wall member 19, further, the construction site of a building unit A ₂ Lower beam 1
1, fixed to the floor material 21.

In this embodiment as well, even if the upper beam 7, which is a frame of a unit-type building, is joined to the upper beam 7 which is a joining member at a right angle, the small beam 33 is formed in the opening 37 formed in the fireproof coating 36. By inserting the joining end portion 33A of the above, the work of covering the upper beam 33 with the fireproof coating material 36 can be easily performed, and the work can be simplified. Further, the joint end 33A of the beam 33 inserted into the opening 37 comes into contact with the inner surface of the opening 37 by the elastic tightening action of the flexible fireproof covering material 36, and the joint end 33A has a gap around it. It is surrounded by the fireproof coating material 36 without being able to do so, and the fireproofness of the upper beam 7 by the fireproof coating material 36 can be reliably obtained.

In order to fix the fire-resistant coating material to the upper beam or the like, a pin is preliminarily set up on the upper beam by welding and the fire-resistant coating material is pushed into the pin from the outside so that the tip of the pin is made of the fire-resistant coating material. Alternatively, the washer may be projected from the surface, the washer may be inserted into the protruding pin tip, and then the washer may be locked by bending the pin tip.

Although each of the embodiments described above is the case of the upper beam to which the small beam is joined, the present invention is also applicable to the lower beam to which the joists are joined.

Further, the frame covered with the fireproof coating is not limited to the upper beam and the lower beam, and may be, for example, a column, and the joint member joined at an angle to the frame may be a brace for reinforcement. Further, it may be a bracket for connecting the shutter case to the frame, for example.

[0026]

According to the present invention, the fireproof covering material for covering the frame of the unit type building is made of a flexible material, and the joint end of the joining member to be joined to the framework by providing the fireproof covering material with a cutout portion. Since the portion is inserted, even if this joining member is joined to the skeleton at an angle, the work of covering the skeleton with the refractory coating material can be easily performed, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a framework of a building unit that is a component of a unit-type building.

FIG. 2 is an exploded perspective view of the upper beam, the beam and the fireproof coating shown in FIG. 1 before assembly.

FIG. 3 is a side sectional view showing a state after assembly of FIG.

FIG. 4 is a side cross-sectional view showing a unit-type building after completion of work at a construction site.

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

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

[Explanation of symbols]

 5-8 Upper beam 13,33 which is the frame of the building unit Small beam 13A, 33A which is a joint member 13A, 33A Joint end part 15,35 Bracket 16,36 Fireproof covering material 17 Notch cut 18 pin 18A Washer 37 Notch part An opening

Claims (1)

[Claims] 1. A fire resistant structure for a unit building, wherein a frame of a unit building is surrounded by a joint end of a joint member joined at an angle to the frame, and a fire resistant covering material is coated on the joint structure. A unit-type building characterized in that the covering material has flexibility, and the joint end portion of the joining member is inserted into a notch formed in the refractory covering material to cover the frame with the refractory covering material. Fireproof structure.