JP2002129688A - External heat insulating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external heat insulating structure capable of inexpensively ensuring the superior heat insulation property of an out frame-type building having an exterior slab. SOLUTION: The slab of the out frame-type building wherein the slab is supported by girders 28, 30 connected between poles 16, 22 including the pole 16 stood outside an outer wall 20, is divided into an interior slab 12a and the exterior slab 18a, and a heat insulating material 26 is placed between the slabs 12a and 18a. An outer wall side end part of the interior slab 12a is held by a holding member 32 connected between the girders 30 penetrated through the outer wall 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer heat insulating structure for an out-frame type building, and more particularly to an outer heat insulating structure suitable for a building having a slab outside the outer wall of a building such as a balcony.

[0002]

2. Description of the Related Art Conventionally, as a heat insulating structure of a building, an external heat insulating structure in which a heat insulating layer is provided on an outer wall surface side of a building is known. In this external heat-insulating structure, heat insulation is performed outside the wall, so that a change in temperature inside the building can be suppressed to a small extent due to the heat capacity of the structural material (for example, concrete) constituting the building body of the building. Further, since the temperature change of the skeleton is reduced, it is possible to prevent thermal fatigue of the skeleton and improve its durability.

[0003] Some apartment houses, such as condominiums, having a veranda, a balcony, or a common corridor, adopt an out-frame type structure. In this out-frame type structure, a pillar is provided on an outer end side of a veranda, a balcony, or the like in order to effectively use the indoor space widely. That is, since the pillar is provided outside the room, the floor slab is integrally formed by extending from the indoor side to the outside of the room, and is supported by a girder connected to the pillar provided outside the room.

[0004]

In the case where the out-frame type building is externally insulated, the heat transfer path between the building and the external space, that is, the outside of a floor slab serving as a so-called heat bridge (heat bridge). It is necessary to apply heat insulation reinforcement to the part.

[0005] However, heat insulation reinforcement on the lower surface of the outdoor slab can be performed relatively easily, but when a heat insulation layer is provided on the upper surface, it is necessary to prevent water from entering the heat insulation layer. For this reason, the accommodation of the heat insulating layer is deteriorated, and disadvantages such as an increase in cost are caused. Therefore, it is not practical to provide the heat insulating layer on the upper surface of the outdoor slab.

The present invention has been made in view of the above points, and an object of the present invention is to provide an external heat insulating structure capable of inexpensively securing excellent heat insulating properties of an out-frame type building having an outdoor slab. Aim.

[0007]

According to a first aspect of the present invention, there is provided an outer heat-insulating structure in which at least a part of columns is erected outside an outer wall and a slab is supported by a girder connected between the columns. An outer heat insulating structure for a type building, wherein the slab is divided into an indoor slab inside the outer wall and an outdoor slab outside the outer wall, and a heat insulating material is interposed therebetween. . That is, since the slab is supported by the girder connected between the columns including the column erected outside the outer wall, even if this slab is divided into the indoor slab and the outdoor slab, their structural strength is reduced. Can be secured. Further, since the heat insulating material is interposed between the indoor slab and the outdoor slab, no heat transfer occurs between the indoor slab and the outdoor slab. Therefore, it is not necessary to provide expensive insulation reinforcement on the upper surface of the outdoor slab.

[0008] The end of the indoor side slab on the outer wall side may be
It may be held by a holding member connected between girders penetrating the outer wall. That is, since the indoor slab is supported by the girder via the holding member, a sufficient supporting strength can be ensured even when the indoor slab is divided from the outdoor slab joined to the column.

[0009]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show an out-frame type RC building according to an embodiment of the present invention. FIG. 1 is a plan sectional view showing a schematic structure of the building according to the embodiment. FIG. 1A is a side sectional view, and FIG.
FIG. 3B is a sectional view taken along line BB of FIG. 1 and FIG.
FIG.

The building 10 of this embodiment is, for example, an apartment house having an outer heat insulating layer 26 formed on the side of the outer wall 20 to form an outer heat insulating structure. And a common corridor 14 that connects to.
The dwelling unit has a living room 12 partitioned into a quadrilateral shape in plan view,
Balcony 18 provided on the opposite side of the common hallway 14
It is composed of

At the boundary of each dwelling unit of the building 10,
An outer pillar 16 erected outside the outer wall 20 and arranged on the outer end side of the balcony 18 and an inner pillar 22 arranged on the common corridor 14 side of the living room 12 are provided. A girder 28 in the girder direction is bridged between the inner columns 22 and between the outer columns 16, and a girder 30 in the beam direction is bridged between the inner column 22 and the outer column 16.

The slab of each dwelling unit is divided into an indoor slab 12a forming the living room 12 inside the outer wall 20 and an outdoor slab 18a forming the balcony 18 outside the outer wall 20. The indoor side slab 12a is
A side is supported by a girder 28 in the girder direction between the inner pillars 22 and a girder 30 in the direction between the two beams, and one side of the balcony 18 is held between the girder 30 in the direction between the two beams. Are held by a small beam 32. The outdoor side slab 18 a is supported on three sides thereof by a large beam 30 extending in the interbeam direction and projecting outward through the outer wall 20 and a large beam 28 extending in the row direction between the outer columns 16.

A heat insulating material 26a is interposed between the divided indoor slab 12a and the outdoor slab 18a, and the heat insulating material 26a is connected to the heat insulating layer 26 to be integrated. That is, only the girder 30 in the inter-beam direction projects from the outer wall 20 toward the balcony 18 and penetrates the heat insulating layer 26.

As described above, according to the present embodiment, the indoor slab 12a and the outdoor slab 18a are divided and the heat insulating material 26a is interposed therebetween, so that the indoor slab 12a is separated from the indoor slab 12a. No heat is transferred to the Further, since the heat insulating material 26a is provided integrally with the heat insulating layer 26 provided on the outer wall 20 side of the building 10, heat is not transferred into the living room 12 from around the outdoor slab 18a. Therefore, the heat transferred between the outdoor slab 18a and the external space is not transmitted from any part other than the large beam 30 in the direction between the beams where the outdoor slab 18a is supported. That is, the surface area of the portion where the heat insulating layer 26 is not provided on the surface of the outer wall 20 of the building 10 is only the found area of the large beam 30 in the direction between the beams, and the conventional indoor slab 12a and outdoor slab 18a It is greatly reduced as compared with the case where they are provided integrally.
Therefore, the excellent heat insulating performance of the building 10 can be effectively obtained.

At this time, since the heat insulation reinforcement is not applied to the upper surface of the outdoor slab 18a, complicated work is eliminated and the cost of extra members can be reduced, so that the above-mentioned external heat insulation structure can be realized at low cost.

Further, since one side of the indoor slab 12a is held by the small beam 32 supported by the large beam 30 in the direction between the beams, even if the indoor slab 12a is divided from the outdoor slab 18a, its holding strength is sufficiently ensured. Can be. At this time, if the small beam 32 is a flat beam as shown in FIG.
Since the beams do not protrude into the interior 2, the indoor space can be used more widely. Further, if necessary, a small beam is bridged between the girders 30 between the beams on the outer side of the outer wall.
You may hold | maintain the living room side edge part of a.

In the above-described embodiment, a case has been described in which the present invention is applied in order to ensure heat insulation at the joint portion of the balcony 18, but the present invention is not limited to this. For example, on the corridor side, the common corridor is an outer corridor that is open to the outside, and the partition wall on the corridor side of the living room forms the outer wall,
Even if the common corridor has an out-frame structure in which pillars are provided on the outer end side, the same is done by dividing the slab into the corridor side and the indoor side, and interposing a heat insulating material between them. The operation and effect can be obtained.

[0018]

As described above, according to the present invention,
Since the slab is supported by the girders that are erected outside the outer wall and connected between the columns including the columns, the structural strength can be ensured even if the slab is divided into the indoor slab and the outdoor slab. And since a heat insulating material is interposed between the indoor side slab and the outdoor side slab, there is no heat transfer between them. Therefore, construction is troublesome and expensive,
Good heat insulation of a building can be ensured at low cost without performing insulation reinforcement on the upper surface of the outdoor slab.

Further, when a holding member supported by a girder connected to the column is provided, and the holding member holds the outer wall side end of the indoor slab, even if the indoor slab is divided from the outdoor slab, Sufficient strength can be secured.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing a schematic structure of a building according to an embodiment of the present invention.

FIGS. 2A and 2B are side sectional views of FIG. 1; FIG. 2A is a sectional view taken along line AA; FIG.

FIG. 3 is an enlarged view of a portion C in FIG. 1;

FIG. 4 is a side sectional view showing a modification of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Building 12a Room side slab 16 (outside pillar) Column 18 Outdoor side slab 20 Outer wall 30 Large beam between beams (large beam) 32 Small beam (holding member)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruka Ogawa 4-640 Shimoseito, Kiyose-shi, Tokyo Inside the Obayashi Gumi Technical Research Institute, Inc. F-term in the Technical Research Institute (reference) 2E001 DD01 EA01 FA01 FA02 FA04 FA11 FA18 KA05

Claims (2)

[Claims] 1. An outer heat-insulating structure for an out-frame type building in which at least a part of columns is provided outside an outer wall and a slab is supported by a girder connected between the columns, wherein the slab is located inside the outer wall. The outside heat insulating structure is divided into an indoor side slab and an outdoor side slab outside the outer wall, and a heat insulating material is interposed therebetween. 2. The external heat insulating structure according to claim 1, wherein an outer wall side end of the indoor side slab is held by a holding member connected between girders penetrating the outer wall.