JPH07145644A - Exterior wall construction for unit building - Google Patents

Abstract

PURPOSE:To obtain exterior wall construction excellent in heat insulating efficiency against the outside of a steel frame such as a horizontal member, etc., eliminate the application of heat insulating materials and a cover to the exterior wall construction, promote execution efficiency and to reduce a construction period. CONSTITUTION:Exterior wall panels 5 having heat insulating materials 11 between an exterior face member 9 and an interior face member 10 are arranged to the outside of a steel frame 1 of unit boxes UF1 and UF2. The exterior wall panels 5 cover the ceiling beam 4 and the outside of a floor beam 3 of the steel frame 1 at part for which the heat insulating materials are used. In the case of a two or more storied building, the outside of a horizontal member section D consisting of the ceiling beam 4 of the lower floor and the floor beam 3 of the upper floor is covered with the exterior wall panels 5 and 5 of the upper and lower floors.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall structure of a unit building such as a steel frame unit house using an outer wall panel containing a heat insulating material.

[0002]

2. Description of the Related Art Conventionally, in a steel frame unit house, there are cases where an ALC plate or a PC plate is used for the outer wall and a case where an outer wall panel containing a heat insulating material such as glass wool is used. Regarding the heat insulation, the outer wall panel containing the above-mentioned heat insulating material is
Outer wall panels containing a heat insulating material are often used because they are several times to dozens times better than ALC plates and the like and can be manufactured at low cost.

When such an outer wall panel containing a heat insulating material is used, conventionally, as shown in FIG. 7, the outer wall panel 51 is replaced by a floor beam 53 and a ceiling beam 5 of a unit box steel frame 52.
It is housed so that it fits inside 4. In the figure, UB1 and UB2 indicate unit boxes on the first and second floors of the unit house constructed as shown in FIG. 6, respectively. For each outer wall panel 51, a wooden panel frame 55 to which an exterior surface material 56 and an interior surface material 57 are attached and which is filled with a heat insulating material 58 such as glass wool is used. A body gap cover 59 is attached to the outside of the body difference portion A formed by the ceiling beam 54 of the first-floor unit box UB1 and the floor beam 53 of the second-floor unit box UB2. I put 60. Also, the base part B
In the above, an exterior surface material 61 upholstered on site is provided, and a heat insulating material 62 is put on the back side thereof.

[0004]

However, in the above-mentioned conventional structure, the gap between the steel frame 52 and the barrel cover 60 is narrow in the barrel difference portion A, and the heat insulating material 60 can be inserted to a sufficient thickness. However, there is a problem that the heat insulating property is insufficient. The body difference portion A is a portion that forms a so-called heat bridge with each part in the building by the steel frame 52 having high thermal conductivity, and is a portion with particularly large heat loss. If the insulation is lower than the other parts, the heat insulation of the building as a whole deteriorates. In the base part B as well as in the case difference part A, there is no room to put the heat insulating material 62 in a sufficient thickness, and there is a problem that the heat insulating property is poor. Moreover, since it is difficult to put the heat insulating material 62 on site, it is necessary to provide the exterior facing material 61 that is upholstered on site as in the example of FIG.

Further, the body cover 59 and the heat insulating material 6 behind it
0 means that it will be constructed on site, but since it is too high for workers to reach from the ground, it is necessary to build a scaffold. In the case of unit housing, construction methods that do not require scaffolding have been developed for joining unit boxes, etc.
It is necessary to construct a scaffold only for construction of the body cover 59 and the heat insulating material 60, and the construction efficiency is remarkably reduced. Therefore, it is an obstacle to shortening the construction period, which is the greatest advantage of the unit construction method. Further, since it is necessary to provide the body gap cover 59, the makeup of the appearance of the building is limited, and for example, it is impossible to form an outer wall having an appearance such that the first and second floors are integrally continuous.

An object of the present invention is to provide an excellent thermal insulation property of a steel frame frame such as a body difference portion to the outside, and to install a unit building which does not need to be provided with a heat insulating material or a cover on site and has a short construction period. It is to provide an outer wall structure.

[0007]

An outer wall structure of a unit building of the present invention is one in which an outer wall panel having a heat insulating material between an exterior surface material and an interior surface material is arranged outside a steel frame of a unit box. is there. The outer wall panel shall cover the outer surface of the ceiling beam and floor beam of the steel frame with the part containing the heat insulating material. In the case of a building with two or more floors, the outer surface of the body difference part consisting of the ceiling beam of the lower unit box and the floor beam of the upper unit box is set to the outer wall panel of the lower unit box and the outer wall panel of the upper unit box, respectively. Cover with.

In the above outer wall structure, in the outer wall panel, a height range portion between the ceiling beam and the floor beam is formed thicker on the indoor side than a portion covering the ceiling beam and the floor beam, and this thickened portion is formed. It may be inserted between the ceiling beam and the floor beam.

[0009]

As described above, since the outer wall panel is arranged outside the steel frame and the portion of the outer wall panel containing the heat insulating material covers the steel frame, the heat insulating material having a sufficient thickness is arranged outside the steel frame. be able to. Therefore, it is possible to improve the heat insulating effect of the outer surface of the steel frame in which heat loss is likely to occur and to improve the heat insulating property of the entire building. Also,
Since the outer wall panel extends to the outside of the steel frame, it is not necessary to put heat insulation material on site. Therefore, it is not necessary to assemble a scaffold on the trunk and other parts to perform heat insulation and to arrange the trunk cover, which facilitates on-site work and greatly contributes to shortening the construction period, which is the greatest advantage of the unit construction method. To be done.

When the height range portion between the ceiling beam and the floor beam of the outer wall panel is formed thicker on the indoor side than the portion covering the ceiling beam and the floor beam, and is inserted between the ceiling beam and the floor beam. Can further improve the heat insulating property of the outer wall while limiting the thickness of the outer wall panel protruding from the steel frame, and can also obtain the effect of improving the site workability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. This outer wall structure is applied to a steel-framed unit building in which a second-floor unit box UF2 is joined to a plurality of first-floor unit boxes UF1, as shown in FIG. 4, for example. FIG. 3 shows the unit boxes UF1,
The steel frame 1 of the UF 2 is shown, and the columns 2 at the four corners, and the floor beam 3 and the ceiling beam 4 in which the lower ends and the upper ends of the adjacent columns 2 are joined to each other have a rigid frame structure. Each column 2 is made of square steel or the like, and each of the floor beam 3 and the ceiling beam 4 is made of inward grooved steel. Each pillar 2,
The floor beam 3 and the ceiling beam 4 are welded or bolted. Outer wall panel 5 on this steel frame 1
Or floor material 6 (Fig. 1), ceiling material 7, partition (not shown)
The unit boxes UF1 and UF2 are configured by performing the above. The unit box UF1 on the first floor is installed on the foundation 15 as shown in FIG.

The outer wall panel 5 of each of the unit boxes UF1 and UF2 has an exterior face material 9 and an interior face material 10 attached to both sides of a panel frame 8 made of lightweight shaped steel or the like, and a heat insulating material 11 such as glass wool or the like is entirely provided inside. It is as packed with. The outer wall panel 5 is arranged on the outer side of the steel frame 1, and the outer peripheral portion thereof extends to a position that covers substantially the entire floor beam 3, ceiling beam 4, and outdoor surface of the pillar 2 of the steel frame 1. The heat insulating material 11 is filled up to the portion covering the floor beam 3, the ceiling beam 4, and the pillar 2. In addition, in the outer wall panel 5,
An air layer may be provided between the heat insulating material 11 and the interior surface material 10, etc., or a plurality of heat insulating materials 11 and air layers may be alternately provided.

Inside the outer wall panel 5, there is provided a middle bar 12 (FIG. 3) made of lightweight shaped steel or wood bars, and a fixing metal fitting 13 made of a section of an angle member provided on the middle bar 12 is used. The outer wall panel 5 is attached to the floor beam 3 and the ceiling beam 4 with fasteners 14 (FIG. 1) such as bolts. In addition, the attachment structure of the outer wall panel 5 to the steel frame 1 can be various structures other than this. For example, an angle member may be used for the middle crosspiece 12, and the middle crosspiece 12 may be directly attached to the floor beam 3 or the ceiling beam 4, or the outer peripheral panel frame 8 may be directly attached to the steel frame 1 by a metal fitting or the like. You can

Since the outer wall panel 5 is provided as described above, the outer surface of the body difference portion D formed by the ceiling beam 4 on the first floor and the floor beam 3 on the second floor has an outer wall panel 5 on the first floor and a second floor, respectively. It is covered with the outer wall panel 5 of. In the joint between the outer wall panels 5 and 5 on the upper and lower floors, joint material 16 such as dry joint material or wet sealing is used.
Is filled. Further, as shown in FIG. 2, between the unit boxes UF1 and UF1 which are adjacent to each other on the left and right, and between UF2 and U
Even between F2, the joint material 16 similar to the above is filled in the joint between the outer wall panels 5 and 5. The outer wall panel 5
May be arranged side by side on one side of the unit boxes UF1 and UF2.
An outer wall panel (not shown) dedicated to the corner portion may be provided in the corner portion of the UF2.

According to the outer wall structure of this structure, the outer wall panel 5 is arranged outside the steel frame 1, and the portion of the outer wall panel 5 containing the heat insulating material 11 covers the steel frame 1. Therefore, the floor beam of the steel frame 1 is covered. The heat insulating material 11 having a sufficient thickness can be arranged on the outside of the ceiling beam 3 and the ceiling beam 4. for that reason,
In particular, the heat insulating effect of the outer surface of the barrel difference portion D of the steel frame 11 where heat loss is likely to occur can be improved, and the heat insulating property of the entire building can be improved.

Further, since the outer wall panel 1 is extended to the outside of the ceiling beam 4 and the floor beam 3 of the steel frame 11, it is not necessary to put a heat insulating material on site. Therefore, it is not necessary to assemble a scaffold to perform heat insulation work or disposition of a body cover on the body difference part D, etc., and the workability on site is good, and the greatest advantage of the unit construction method is shortening of the construction period. Be contributed.
The joint material 16 can be easily constructed. Especially, if dry joint material is used, the construction is very easy. Therefore, it is not necessary to build a scaffold, and the scaffold is not necessary for the joint structure of the unit boxes UF1 and UF2. By adopting, it becomes possible to construct the entire building without scaffolding.

FIG. 5 shows another embodiment. In this example, in the outer wall panel 5, the height range portion 5a between the ceiling beam 4 and the floor beam 3 is formed thicker on the indoor side than the portions 5b and 5c covering the ceiling beam 4 and the floor beam 3, and this thickness is increased. This is the part that has entered between the ceiling beam 4 and the floor beam 3. Regarding the portions 5b and 5c that cover the ceiling beam 4 and the floor beam 3, the interior surface material 1
0 is omitted. Since other configurations are the same as those of the above-mentioned embodiment, the corresponding parts are designated by the same reference numerals and the description thereof will be omitted. In the case of such a configuration, while limiting the thickness of the outer wall panel 5 protruding from the steel frame 1, it is possible to further improve the heat insulating property and soundproofing property of the outer wall, and also to improve the on-site workability. can get.

[0018]

The outer wall structure of the unit building of the present invention is
Since the outer wall panel is placed outside the steel frame, and the part of the outer wall panel that contains the heat insulating material covers the steel frame, a sufficient thickness of heat insulating material can be placed on the outer side of the steel frame. The heat insulation of the outer side of the required steel frame can be greatly improved. Moreover, since the outer wall panel is extended to the outside of the steel frame, it is not necessary to install a heat insulating material or its cover on site, which can greatly contribute to shortening the construction period. For the outer wall panel, if the height range part between the ceiling beam and the floor beam is made thicker on the indoor side than the part that covers the ceiling beam and the floor beam, and enters between the ceiling beam and the floor beam, the outer wall While limiting the thickness of the panel protruding from the steel frame, the heat insulation of the outer wall can be further improved, and the effect of improving the on-site workability can be obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an outer wall structure according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of the outer wall structure.

FIG. 3 is an exploded perspective view of a unit box.

FIG. 4 is a front view of a unit building.

FIG. 5 is a partially cutaway side view of an outer wall structure according to another embodiment of the present invention.

FIG. 6 is a front view of a conventional unit building.

FIG. 7 is a partially cutaway side view of an outer wall portion thereof.

[Explanation of symbols]

1 ... Steel frame, 2 ... Pillars, 3 ... Floor beams, 4 ... Ceiling beams, 5
... Exterior wall panel, 9 ... Exterior surface material, 10 ... Interior surface material, 11 ...
Insulation, D ... Cross section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area E04B 2/90

Claims (3)

[Claims] 1. An outer wall panel having a heat insulating material between an outer surface material and an inner surface material is arranged outside a steel frame of a unit box, and the outer wall panel is a portion containing the heat insulating material. The outer wall structure of the unit building that covers the outer surfaces of the steel frame ceiling beams and floor beams. 2. The outer wall structure for a unit building according to claim 1, wherein the outer surface of the body connecting portion formed by the ceiling beam of the lower floor unit box and the floor beam of the upper floor unit box is the outer wall panel of the lower floor unit box. And the outer wall structure of the unit building covered with the outer wall panel of the upper unit box. 3. The outer wall structure for a unit building according to claim 1, wherein the outer wall panel is formed such that a height range portion between the ceiling beam and the floor beam is thicker on the indoor side than a portion covering the ceiling beam and the floor beam. The outer wall structure of the unit building where this thickened part is inserted between the ceiling beam and floor beam.