JPH0765341B2 - Fireproof structure of unit building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fire resistant structure of a unit building suitable for use in a three-story or more building, such as an apartment, a hospital, a hotel, a boarding house, etc. Regarding

(Prior Art) Among unit buildings constructed by stacking a box-shaped unit in which a floor plate, a ceiling plate and a wall plate are attached to a skeleton composed of large beams, small beams and columns, apartment buildings, hospitals , Three-story buildings and more for hotels, lodgings, etc., the main structural parts (floor, girder, wall,
The roof and pillars must have a fireproof structure with the specified fireproof performance. Therefore, in general, the floor board, ceiling board and wall board are made of refractory material, and the roof is made of refractory material.
Further, as described in JP-B-51-17218, steel columns and beams are covered with a refractory material and covered with a refractory material to ensure their fire resistant performance. Among them, the structure shown in FIG. 5 is generally known as a conventional fireproof structure for a beam of a steel building.

In this conventional structure, each girder 01 is covered with a fireproof coating material 02, and the girder 01 is covered with a fireproof coating without gaps between the fireproof coating material 02 and a wall plate 03 and a floor plate 04 formed of a fireproof material, Further, each floor beam 05 was covered with a fireproof coating plate 06 such as a calcium silicate plate, and the floor beam 05 was fireproof coated with no gap between the fireproof coating plate 06 and the floor plate 04.

By the way, although FIG. 5 shows an example in which the fireproof covering plates 02 and 06 are attached to the large beam 01 and the floor small beam 05 by the construction,
As shown in FIG. 6, it was also carried out by spraying a fireproof coating 09 such as rock wool. In any case, it was done individually for the girder 01 and the floor girder 05.

Further, the ceiling board 07, which is not included in the main structure part, was formed of gypsum board or the like.

(Problems to be Solved by the Invention) However, as in such a conventional fireproof structure, the fireproof covering plates 02 and 06 are attached to the individual girders 01 and floor girders 05, or the fireproof covering material 09 is used. It was extremely troublesome and troublesome to spray.

In addition, as shown in FIG.
When 06 is attached and covered, the fireproof cover plate 02, 06
Since the floor plate 04 and the wall plate 03 must be closely attached, it was difficult to cover all the large girders 01 and the floor girders 05 without gaps.

Moreover, as shown in FIG. 6, when the beam is covered with the fire-resistant coating material 09 by spraying, if the work is performed at the time of assembling the unit in the factory, the work may be performed during the movement in the factory or to the construction site. The fireproof coating 09 sprayed on the beam sometimes dropped during transportation. If the spraying of the fire-resistant coating material 09 is carried out at the construction site without being carried out in the factory, there is a problem that efficiency is lowered due to poor workability and further labor is required.

Further, the large beam 01 and the floor small beam 05 which are fireproof coated generally have a ceiling space 08 formed by a floor plate 04, a ceiling plate 07 and a wall plate 03.
Since it is installed in the, it cannot be easily seen from the outside,
There was a problem that it was difficult to manage.

(Means for Solving Problems) The present invention has been made for the purpose of solving the above problems, and in order to achieve this object, floor girders and floor girders and ceiling girders and ceilings A plurality of box-shaped units formed by attaching a floor plate, a ceiling plate, and a wall plate to a body composed of beam and pillar are vertically stacked and tightly bonded, and the floor plate of the upper unit is vertically interposed between the adjacent units. And a ceiling plate of the lower unit forms an under-ceiling space, and a floor girder and a floor girder of the upper unit and a ceiling girder and a ceiling girder of the lower unit are arranged in the ceiling girth space, And, the floor plate of the upper unit and the ceiling plate of the lower unit forming the space above the ceiling are made of a fire resistant material having a fire resistance time of 1 hour or more (JIS A1304 fire resistance test method of the building structure part), Fireproof time of 1 hour (JIS A1304 construction) And refractory structure of the unit building, characterized in that a structure having a refractory test method) more refractory performance structural parts.

(Operation) In the fireproof structure for a unit building of the present invention, since the above-mentioned means is adopted, the floor girder and floor girder of the upper unit among the vertically adjacent units and the ceiling girder and ceiling of the lower unit The beam can be fireproofed simultaneously with the floorboard of the upper unit and the ceilingboard of the lower unit.

Moreover, the work of binding the vertically adjacent units to each other is a work of simultaneously performing fireproof coating on the floor girders and floor girders of the upper unit and the ceiling girders and ceiling girders of the lower unit, which is trouble-free.

Also, without directly applying fire resistance to the large and small beams that are placed in the space above the ceiling and cannot be easily seen from the outside,
The floor plate and ceiling plate, which can be easily seen from the outside, are fire-resistant, so management is easy.

(Examples) Examples of the present invention will be described in detail below with reference to the drawings.

In describing this embodiment, the fireproof structure will be described by taking a three-story unit building as an example.

First, the structure of the unit building shown in FIGS. 1 to 4 will be described.

The unit building of the embodiment includes a floor girder 1 and a floor girder 2,
Floor board 6, ceiling board 7 and wall board (outer wall board 8, inner wall board 9, partition board 1) in a frame composed of ceiling girders 3 and ceiling joists 4 and pillars.
0) and a box-shaped unit A formed by attaching
However, as shown in FIG. 1, the upper and lower units A are stacked one on top of the other, and the roof 11 is placed on top of the unit A.

This unit building is composed of vertically adjacent units A, A
A ceiling space 12 formed by the floor plate 6 and the outer wall plate 8 of the upper unit A and the ceiling plate 7 of the lower unit A is provided between the upper and lower units A. The floor girder 1 and the floor girder 2, and the ceiling girder 3 and the ceiling girder 4 of the lower unit A are arranged.

In addition, horizontally adjacent units A, the floor plate 6 and the ceiling plate 7 of A are continuously provided on the same plane, and the partition plate 10 of each unit A has a floor surface (the upper surface of the floor plate 6) and a ceiling. It is erected between the surface (the lower surface of the ceiling plate 7).

Further, among the vertically adjacent units A, the floor girder 1 of the upper unit A and the ceiling girder 3 of the lower unit A are
A partition plate 13 for horizontally partitioning the space 12 above the ceiling is fixed for each unit A. The partition plate 13 is made of a refractory material such as a 25-mm thick asbestos calcium silicate plate.

Further, as shown in FIGS. 2 and 3, the floor girder 1 and the ceiling girder 3 are made of a bar-shaped steel, and the floor girder 2 and the ceiling girder 4 are made of an I-shaped steel. , The ceiling girder 3
A field edge 15 is fixed to the ceiling beam 4 through a field edge fixing tool 14. The ceiling plate 7 is fixed to the field edge 15 with tapping screws 16.

Next, the fireproof structure of this unit building will be described.

First, among the main structural parts required to have fire resistance, the floor and the wall are formed of a floor plate 6 and an outer wall plate 8 made of a fire resistant material, respectively. For example, the floor board 6 is made by stacking four hard wood chip cement boards with a thickness of 18 mm, and has a fire resistance time of 1 hour or more (JI
SA1304 has a fire resistance of (based on the fire resistance test method of the building structure), the outer wall plate 8 is a 100 mm thick ALC plate, etc., and the fire resistance time is 2 hours or more (based on the fire resistance test method of the JIS A1304 building structure part). It has a fire resistance of.

Further, the roof plate 11 has an inorganic heat insulating material attached to the back surface thereof, and has a fire resistance performance of a fire resistance time of 30 minutes or more.

Furthermore, the ceiling board 7 is also made of a fireproof material having a fireproof performance of a fireproof time of 1 hour or more (according to the JISA1304 fireproof test method of the building structure part) such as a 25 mm thick asbestos calcium silicate board. There is. That is, the floor plate 6, the outer wall plate 8 and the ceiling plate 7 which form the space 12 above the ceiling are all made of a refractory material. Floor girder 2, ceiling girder 3 and ceiling girder 4 are simultaneously fireproof coated, and when the whole is considered as a floor, fireproof time of 1 hour or more (according to JIS A 1304 fireproof test method of building structure part) has been obtained. .

Further, as shown in FIG. 4, the pillar 5 is fireproof coated by covering it with a fireproof coating plate 17 such as a 25 mm thick asbestos calcium silicate plate.

Therefore, the unit building of the present embodiment has a fire resistant structure in which the main structural parts such as walls, floors, roofs, beams, and columns have the required fire resistant performance.

The inner wall plate 9 and the partition plate 10 not included in the main structure are
For example, it is made of non-combustible material such as gypsum board and asbestos slate.

Next, the operation of the embodiment will be described.

The unit A of the unit building of the present embodiment is assembled in a box at the factory and then transported to the construction site. Since each unit A assembled in the factory uses the refractory material for the floor plate 6, the ceiling plate 7, the outer wall plate 8 and the roof plate 11,
It has fire resistance on each wall, floor and roof.

At the construction site, first install the unit A on the foundation 18,
The foundation 18 and the unit A and the unit A are bolted together. The floor girders 1 and floor girders 2 of the upper unit A, and the ceiling girders 3 and ceiling girders 4 of the lower unit A, which are arranged in the ceiling space 12 when the units A are fastened together by bolts, At the same time, the floor plate 6 and the outer wall plate 8 of the upper unit A and the ceiling plate 7 and the outer wall plate 8 of the lower unit A are fireproof coated.

The pillars 5 are covered with a fireproof coating plate in the main part in advance in the factory, and after the units A are bolted tightly to each other on the spot, the fireproof coating plates are closed by closing the gaps between the pillars 5 of the units A horizontally adjacent to each other. Cover with 17 and fireproof the whole without any gaps.

Therefore, when the unit A is assembled in the factory, most of the fireproof structure can be completed, and the beams that must be fireproofed on site need to be individually covered without gaps as in the conventional method. Instead, since the floor girders 1 and the floor girders and the ceiling girders 3 and the ceiling girders 4 can be simultaneously fireproof coated, the work at the site becomes easy and the labor is extremely saved.

Further, since the floor plate 6, the ceiling plate and the outer wall plate 8 which can be easily seen from the outside of the ceiling space 12, are fireproofed,
Easy to manage.

Furthermore, since the partition plate 13 for partitioning the above-ceiling space 12 is made of a refractory material, the floor plate 6 or the ceiling plate 7 of the unit A in the event of a fire should be damaged and should be introduced into the above-ceiling space 12 easily. However, the fire is blocked by the partition plate 13, and it is possible to prevent the fire from entering the horizontally adjacent unit A from there.

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to the embodiments, and the present invention can be applied even if there is a design change or the like within a range not departing from the gist of the present invention. included.

For example, in the embodiment, the fire resistant structure is applied to a three-story unit building, but it may be applied to a two-story, four-story or more unit building.

Further, the wall board, floor board and ceiling board may be made of a refractory material other than those of the examples as long as it has a predetermined fire resistance performance, and a sound insulating sheet or a heat insulating material other than the refractory material may be added. Good.

(Effects of the Invention) As described above, in the fireproof structure for a unit building of the present invention, the floor girders and floor girders of the upper unit are connected to each other by performing the binding work of the vertically adjacent units. Since the ceiling girders and ceiling girders of the lower unit can be simultaneously fireproof coated, it is easier and extremely workable compared to individually coating these girders and girders without gaps. The effect of saving labor can be obtained. Further, since the fire resistant structure of the unit building of the present invention has a fire resistance of 1 hour or more (according to JIS A1304 fire resistance test method of building structure), it can be used in apartments, hospitals, hotels, boarding houses, etc. It can be applied to a three-story building.

Moreover, since the units can be mass-produced at the factory, the time required to complete the unit building can be further shortened by simplifying the work at the construction site as much as possible.

Further, since the floor plate and the ceiling plate that can be easily seen from the outside of the ceiling space are provided with fire resistance, an effect that management is easy can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the entire fire resistant structure of a unit building according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view showing a main portion of the embodiment structure, and FIG. 3 is a main portion of the embodiment structure. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 1, FIG. 5 is a vertical cross-sectional view showing the fireproof structure of a conventional unit building, and FIG. 6 is a partial cross-sectional view showing the conventional structure. is there. A: Unit 1 ... Floor girder 2 ... Floor girder 3 ... Ceiling girder 4 ... Ceiling girder 6 ... Floor board 7 ... Ceiling board 8 ... Outer wall board (wall board) 9 ... Inner wall board ( Wall plate) 10 …… Partition plate (wall plate) 12 …… Ceiling space

Claims (1)

[Claims] 1. A plurality of box-shaped units, which are formed by attaching a floor plate, a ceiling plate and a wall plate to a skeleton composed of floor girders and floor girders, ceiling girders, ceiling girders and columns, are vertically stacked. The floor space of the upper unit and the ceiling plate of the lower unit form an inter-ceiling space between vertically adjacent units, and the floor girders and floor girders of the upper unit and the lower girders are formed in the ceiling space. The ceiling girder and the ceiling girder of the lower unit are arranged, and the floor plate of the upper unit and the ceiling plate of the lower unit, which form the space above the ceiling, have a fire resistance time of 1 hour (JISA13
04 Fire resistance test method for building structure parts) A fire resistant material having the above fire resistance performance was used to make the space above the ceiling a fire resistance time of 1 hour (JIS A1304 fire resistance test method for building structure parts) or more. Fireproof structure of unit building.