JPH0754423A - Mounting structure of fire-resisting panel to frame material in fire-resisting building - Google Patents

Abstract

PURPOSE:To prevent the breakdown of fire-resisting floor panels in the case of a fire and to maintain a fire-resisting section. CONSTITUTION:In mounting structure of fire-resisting panels constructing floor panels 55 formed of a fire-resisting material having a coefficient of thermal expansion lower than that of floor beams between the steel floor beams 51 and 53 arranged in parallel, the floor panels are formed in the shape of a rectangle. Short sides are paralleled lengthwise of the floor beams to arrange a plurality of floor panels lengthwise, and only one of both ends of each of the floor panels is fixed to each of the floor beams with a bolt 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a fireproof panel to a frame material in a fireproof building, and is particularly suitable for use in a large building having three or more floors, such as an apartment house, a hospital, a dormitory, etc. is there.

[0002]

2. Description of the Related Art In recent years, unit buildings have become widespread for buildings with three or more stories. In order to increase the industrial production rate of a building, a unit building is manufactured by dividing a building into several units of a size that can be transported in advance and then transporting them to the construction site. It is a building that is built, built, and assembled. By the way, buildings with 3 floors or more that are used for apartments, hospitals, dormitories, etc., have a fire resistant structure in which the main structural parts such as floors, girders, walls, and pillars have a prescribed fire resistance performance in accordance with the Building Standards Act. There must be.

As a unit building having a fireproof structure, the one described in Japanese Patent Laid-Open No. 63-1655630 has been known. As shown in FIG. 5, the unit building described in the above publication has a building unit A (A1, A
2, A3) are vertically stacked in three stages. These building units A (A1, A2, A3)
Is a structural steel floor girder 1 and a floor girder 2 which are fireproof coated with a fireproof coating material, a structural steel ceiling girder 3 and a ceiling girder 4 which are also fireproof coated, and a fireproof coated rectangular type. A box-shaped one in which a frame is made up of columns 5 made of steel pipe, and a floor material 6, a ceiling material 7, and wall materials (outer wall material 8, inner wall material 9, partition wall 10) are attached to this body. The floor unit A1 is installed on the foundation 11, bolted to the foundation 11, and the roofing material 12 is installed on the third floor unit A3.

The first floor unit A1 and the second floor unit A
In the second and second floor units A2 and the third floor unit A3, the lower end surface (column base) of the pillar 5 of the upper building unit A and the upper end surface (post cap) of the pillar 5 of the lower building unit A are fastened with bolts. Are joined to each other. In addition, the building units A and A on the same floor are connected to each other by connecting adjacent columns 5 and 5 with a horizontal joint plate,
They are joined together.

The floor material 6 and the wall material (the outer wall material 8,
The inner wall material 9 and the partition wall 10) are, for example, JIS-1304.
It is made of a refractory material that can withstand a one-hour or two-hour fire resistance test of the building structure specified in 1., and these floors, walls, etc. constitute a fire-resistant section. FIG. 6 shows an example of a floor material mounting structure in a conventional unit building. In this example, a concrete floor panel 14 as a refractory partition material comprises a pair of parallel floor girders 15 and 1 made of H-shaped steel.
Bolts 5 on each floor girder 15 with both ends placed on each floor girder 15.
It is fixed at 6.

[0006]

By the way, since the floor beams (frame members) 15 made of steel material and the floor panels 14 made of concrete greatly differ in coefficient of thermal expansion, the floor panels 14 are the same floor beam as in the conventional example. In the structure in which the steel floor beams 15, 15 are heated to a high temperature during a fire and thermally expand in the direction of the arrow in the structure fixed to 15 at a plurality of points, the floor panel 14 as a refractory partition material is There is a problem of destruction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure for mounting a fireproof panel to a frame member in a fireproof building capable of preventing breakage of the fireproof panel.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is formed by a material having a thermal expansion coefficient smaller than that of the steel frame members arranged in parallel. In the structure for attaching the fire-resistant panel to the frame material in the fire-resistant building in which the fire-resistant panel is supported by the frame member, the number of the connecting points of the frame member and the fire-resistant panel is set to 1 or less. It is characterized by

The invention according to claim 2 is characterized in that a plurality of the fireproof panels are arranged side by side in the longitudinal direction of the frame member, and one end of each fireproof panel is fixed to each frame member by a bolt. is there.

According to the third aspect of the present invention, the refractory panel is formed in a rectangular shape having a short side in the longitudinal direction of the frame member and a long side in the direction orthogonal to the longitudinal direction, and each long side is formed. It is made up of a number of adjacent sheets.

[0011]

In the structure of the invention according to claim 1, since the number of the connecting points of the fireproof panel to the same frame member is one or less,
The fire-resistant panel is not constrained by the frame member except at the joints. Therefore, even if the frame member thermally expands, there is no fear that the frame member will exert a strong tension on the fire-resistant panel, and the breakage of the fire-resistant panel is prevented.

In the structure according to the second aspect of the present invention, a plurality of refractory panels are arranged in the longitudinal direction of the frame member, that is, in the direction in which the frame member expands greatly, and each fire resistant panel is bolted to the same frame member one by one. Therefore, even if the frame material expands thermally,
The positional deviation between the refractory panel and the frame member will be dispersed, and as a result, the gap between the refractory panels will be small.

In the structure of the present invention as defined in claim 3, since the refractory panel is formed in a rectangular shape and the short sides are arranged along the direction in which the frame member greatly expands by heat, the number of refractory panels per unit length of the frame member is reduced. More can be done and the gaps created between the refractory panels can be minimized.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 is an enlarged perspective view showing an essential part of an embodiment of the present invention, FIG. 2 is a perspective view showing a state of the same part at a high temperature, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a perspective view showing an assembled state of a unit building, and FIG. 4 is a perspective view showing a structure of a building unit to which an embodiment of the present invention is applied. First, a unit building to which an embodiment of the present invention is applied and a building unit constituting the unit building will be described with reference to FIGS.

As shown in FIG. 3 (d), this unit building 30 is constructed by stacking building units A in three steps vertically and installing them on a foundation 11 and connecting the building units A to each other. There is. The skeleton of each building unit A is of a frame type as shown in FIG. 4, and four pillars 40 made of square steel pipe are arranged at the four corners, and the four corners of the floor structure 50 are arranged on the lower end side surfaces of the pillars 40. In addition to joining, the four corners of the ceiling structure 60 are joined to the upper end side surface of each pillar 40 to form a box shape having a transportable size.

The ceiling structure 60 includes four ceiling girders 61, 62, 63, 64 made of channel steel welded to the side surfaces of the upper ends of the columns 40 to form a quadrangular outer frame. The ceiling girders 65 made of grooved steel and laid across in parallel between the ceiling girders 61 and 63 facing each other on the long side are roughly configured. Here, both ends of each ceiling girder 65 are fixed to the web inner surface of the ceiling girders 61 and 63 via L-shaped girder mounting hardware.

The floor structure 50 includes four H-section steel floor girders (frame members) 51, 52, 53, 54 which are welded to the side surfaces of the lower ends of the columns 40 to form a rectangular outer frame. , A floor panel (fireproof panel) 55 made of ALC (aerated concrete) plate, which is a fireproof partitioning material, laid in parallel between the floor girders 51, 53 facing each other on the long side of the outer frame. It is roughly configured. Here, the both ends of each floor panel 55 are
The floor girders 51 and 53 are joined to each floor with a bolt.

Next, the mounting structure of the floor girders 51 and 53 and the floor panel 55 will be described in detail with reference to FIG. The floor panel 55 has a rectangular shape and has short sides along the longitudinal direction of the floor girders 51 and 53, long sides along a direction orthogonal to the longitudinal directions of the floor girders 51 and 53, and the long sides are sequentially adjacent to each other. In this state, it is bridged between the floor girders 51 and 53, and is fixed to the floor girders 51 and 53 by a bolt 70 that penetrates through the central portion of the width of its short side.

Next, the operation will be described. First, in a factory, the building unit of the building unit shown in FIG. 4 is manufactured, and outer wall panels, inner wall panels, boundary wall panels, and other refractory partition materials are attached to the body, and further partition wall panels, ceiling materials, and the like are attached. Manufactures various building units A. Then, the building unit A is transported to the construction site, and shown in FIGS.
As shown in (3), the building unit is lifted and installed on the foundation 11, and then the building unit is installed sequentially, horizontally, and on top to complete the three-story unit building 30. Then, the floor panel and the wall panel form a fireproof section which is a space closed above the fire.

When a fire occurs in this building, the floor beams 51, 53 made of steel material thermally expand in the direction of the arrow shown in FIG. 1 under high temperature, and a force also acts on the floor panel 55 accordingly. , Each floor panel 55 has a floor beam 51 with one bolt 70,
Since it is only fixed to 53, each floor panel 55 only moves following the deformation of the floor beam 70, as shown in FIG.
Destruction is prevented. In this case, each floor panel 55
However, by moving following the deformation of the floor beams 51, 53, a gap 80 is created between the floor panels 55.
Since a large number of 5 are arranged in such a manner that the short sides are arranged in the longitudinal direction of the floor beams 51, 53, the floor panel 55 and the floor beams 51, 5 are arranged.
The positional deviation of position 3 is dispersed, and the gap 80 is also reduced. Therefore, if a means for sealing the gap 80 is provided in advance, the floor panel 55 can surely shield the upper floor and the lower floor, and the refractory section can be maintained.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention.

For example, in the above embodiment, both ends of the floor panel 55 are fixed to the floor beams 51 and 53 with bolts 70, but the floor panel 55 is simply placed on the floor beams 51 and 53. You can just do it. Further, it may be fixed only on one side. Alternatively, only the floor panel at an appropriate position may be fixed.

For example, bolts may be alternately fixed to one end side and the other end side of the floor panel. By doing so, the positional deviation in the width direction (short side direction) of the floor panel can be regulated by the adjacent floor panel, and the longitudinal direction (long side direction) position of each floor panel is at one end thereof. It can be regulated by the bolts located.

Further, it may be fixed by using means other than bolts. However, in that case, it is necessary to fix one point of the floor panel to one floor beam and substantially not fix two or more points to one floor beam.

The present invention can be applied not only to floors but also to walls. Further, although the unit building is described in the above-mentioned embodiments, the present invention is not limited to this, and the present invention can be applied to a non-unit building.

[0026]

As described above, according to the first aspect of the present invention, even if the frame member thermally expands during a fire, the fireproof panel can be prevented from being broken.

According to the second aspect of the present invention, it is possible to disperse the positional deviation between the refractory panel and the frame member when the frame member is thermally expanded, and it is possible to reduce the gap between the refractory panels.

According to the third aspect of the invention, it is possible to increase the number of refractory panels per unit length of the frame member, and to minimize the gap generated between the refractory panels. Therefore, a means for sealing the gap can be easily provided, and a reliable refractory compartment can be maintained.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of an essential part of an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of essential parts showing a state at high temperature of the embodiment.

FIG. 3 is a perspective view showing an assembled state of a unit building to which the embodiment is applied.

FIG. 4 is a perspective view of a building structure of a building unit to which an embodiment of the present invention is applied.

FIG. 5 is a cross-sectional view showing a schematic structure of a conventional unit building.

FIG. 6 is a perspective view showing an example of a structure for attaching a floor panel to a floor beam in a conventional unit building.

FIG. 7 is a perspective view showing a problem of the mounting structure at a high temperature.

[Explanation of symbols]

 30 unit building (fireproof building) 40 pillar (framework) 50 floor structure (assembly of fireproof panel) 51,53 floor girder (framework) 55 floor panel (fireproof panel) 70 bolt

Claims (3)

[Claims] 1. A refractory building in which refractory panels made of a refractory material having a coefficient of thermal expansion smaller than that of the frame members are bridged between steel frame members arranged in parallel, and the refractory panels are supported by the frame members. The structure for attaching a fireproof panel to a frame material in a fireproof building, characterized in that the number of joints between the one frame member and one fireproof panel is one or less. 2. The skeleton in a fireproof building according to claim 1, wherein a plurality of the fireproof panels are arranged side by side in the longitudinal direction of the framing member, and one end of each fireproof panel is fixed to each framing member by a bolt. Fireproof panel mounting structure for materials. 3. The fire-resistant panel is formed in a rectangular shape having a short side in a longitudinal direction of the frame member and a long side in a direction orthogonal to the longitudinal direction of the frame member, and the long side is adjacent to the fire-resistant panel. A structure for mounting a fireproof panel to a frame member in a fireproof building according to claim 1, wherein a plurality of sheets are bridged between the frame members.