WO2008029462A1

WO2008029462A1 - Exterior wall body

Info

Publication number: WO2008029462A1
Application number: PCT/JP2006/317679
Authority: WO
Inventors: Ryuichi Kudo; Hiroshi Nanaoka; Koki Tsuda; Yosuke Fujiwara; Kiyoshi Tanaka
Original assignee: Daiwa House Industry Co., Ltd.
Priority date: 2006-09-06
Filing date: 2006-09-06
Publication date: 2008-03-13
Also published as: CN101506441B; CN101506441A

Abstract

An exterior wall (W) formed by joining exterior wall panels (A) to both sides of steel beam columns (B). Each exterior wall panel (A) has a heat insulating board (30) as an exterior heat insulating material bonded to a panel frame (10) on its surface on the exterior side, and also has ventilation furring strips (40) fixed to the heat insulating board (30) on its surface on the exterior side. The ventilation furring strips (40) provide a ventilation layer (41) between an exterior wall surface material (50) and the heat insulating board (30). A joint of the heat insulating board (30) is located on a steel beam column (B) on its exterior side. A heat insulating material (31) for the joint is applied to the steel beam column (B) on its exterior side, and this prevents the joint from functioning as a heat bridge. Because of the presence of the ventilation layer (41), moisture entering from the outside can be efficiently discharged. Dew condensation is less likely to occur on the surface of a structure body and as a result the durability of the structure body is enhanced.

Description

Outer wall

Technical field

The present invention relates to an outer wall body that constitutes a wall portion of a building having an outer heat insulating structure.

Background art

[0002] In recent years, in general homes and the like, there are many buildings that are excellent in workability and earthquake resistance! In addition, in a building with a steel structure, the outer wall is constructed by attaching the outer wall that has been pre-assembled to a steel column, etc., reducing the number of on-site construction work and shortening the construction period. ing.

On the other hand, in such buildings, the steel structure frame has good thermal conductivity, so internal condensation occurs in the wall, and the insulation, waterproofing and ventilation measures have a great influence on the durability of the building. Therefore, an outer heat insulating structure in which a heat insulating layer and a ventilation layer are provided on the outdoor side of the structural housing is employed as the heat insulating structure of the outer wall portion (see, for example, Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-348981

Disclosure of the invention

Problems to be solved by the invention

[0004] However, when building a building with an outer heat insulation structure by joining a paneled outer wall to a steel column, the heat insulation and waterproofing are provided at the joint that is the joint between the outer wall panels. The force that needed to be constructed to ensure it was difficult. In other words, there are gaps in the outer heat insulating material built into the outer wall panel at the joint, but in order to prevent this joint from becoming a thermal bridge, a conventional joint sealing material (waterproof packing, etc.) is used. It was necessary to use joint insulation that can ensure the same level of heat insulation as the surrounding outer insulation. In addition, the basic performance of the joints had to be fireproof and waterproof at the same time.

[0005] In the outer heat insulating structure, an outer heat insulating material is interposed between the steel frame and the outer wall surface material. However, in order to attach the outer wall surface material stably without using a hardware such as a spacer, an outer heat insulating material is used. It is preferable that the heat insulating material is hard. While being strong, it is generally used as a hard insulation material. The foamed plastic insulation has a problem that it easily causes internal condensation due to its high moisture resistance. Therefore, Patent Document 1 proposes an outer wall panel using a hard heat insulating material such as foamed plastic partially. However, such an outer wall panel takes time to manufacture and has many seams of the heat insulating material. For this reason, there was a problem that construction defects were likely to occur at the joints.

[0006] Further, in Patent Document 1, a ventilation layer is provided between the outer heat insulating material and the outer wall surface material. However, sufficient waterproof measures are taken when moisture enters the ventilation layer, and the force is sufficient. I got it. Therefore, once rainwater or the like has entered the ventilation layer, there has been a problem that the steel structure housing side is easily flooded.

[0007] The present invention has been made in view of the above-mentioned problems, and the object thereof is to provide an outer wall body formed by joining a paneled outer wall to a steel column, so that the joint portion becomes a thermal bridge portion. Another object of the present invention is to provide an outer wall body having an outer heat insulating structure configured as described above. Another object of the present invention is to provide an outer wall body having an outer heat insulating structure that is easy to apply and hardly causes poor construction. Another object of the present invention is to provide an outer wall body in which heat insulation measures, waterproofing measures, and ventilation measures including joints are sufficiently taken to prevent the occurrence of internal condensation in the wall body. Means for solving the problem

[0008] An outer wall body of the present invention is an outer wall body including a steel column and an outer wall panel attached to a side of the steel column, and the outer wall panel is a panel frame joined to the steel column. A heat insulation board attached to the outdoor side of the panel frame, and an outer wall surface material attached to the outdoor side of the heat insulation board, and the two pieces of the heat insulation disposed with the steel column interposed therebetween A joint between the boards is provided on the outdoor side of the steel column, and a heat insulating material for the joint is attached to the surface on the outdoor side of the steel column corresponding to the joint between the heat insulating boards.

[0009] As described above, in the present invention, since the outer wall formed as a panel can be attached between steel columns to form the outer wall, it is possible to reduce the number of on-site work and shorten the construction period. . In addition, quality control can be performed appropriately and costs can be reduced by pre-standardizing the outer wall panels and producing them at the factory. Therefore, stable quality and cost outside A wall can be formed.

Further, the outer wall panel constituting the outer wall body of the present invention has an outer heat insulating structure in which the ventilation layer and the heat insulating layer are disposed on the outdoor side of the structural housing. In the outer heat insulating structure, the structural housing is not easily cooled by the influence of external temperature changes. Further, by providing the ventilation layer, moisture entering from the outside can be efficiently discharged. Therefore, dew condensation occurs on the surface of the structural body, and the durability of the structural body is improved.

Further, in the outer wall body of the present invention, the joint of the heat insulation board, which is the outer heat insulating material, is located on the outdoor side of the steel column, and the joint heat insulator is attached to the joint portion on the outdoor side of the steel column. Yes. Thus, by protecting the joint portion of the outer heat insulating material so as not to become a thermal bridge, the heat insulating property is improved and internal dew condensation occurs. Therefore, durability is improved.

[0010] More specifically, it is preferable that at least one of the heat insulating board and the joint heat insulating material is configured to have a foamed resin heat insulating material force.

More specifically, at least one of the heat insulating board and the joint heat insulating material has one side of an inorganic fiber heat insulating material having a density of 98 kgZm ³ or more formed of an aluminum layer on the upper surface of the lattice network. It is preferable that the other side is reinforced with glass paper and the other side is reinforced with glass paper.

[0011] Thus, when the surface of the outer heat insulating material is reinforced, the outer heat insulating material can be held in a plate-like form. Therefore, the workability is excellent and the outer wall surface material can be stably attached. In addition, when one side of the high-density inorganic fiber heat insulating material is reinforced with a skin material composed of a lattice network (reinforcing layer) and an aluminum layer, and the other side is reinforced with glass paper, The outdoor side of the steel column or the like can be efficiently insulated by the fibrous heat insulating material and the aluminum layer, and the joint sealing material can be supported.

In addition, since the back side reinforced with glass paper is smooth, it can be easily attached to the outdoor side of steel columns and the like with adhesive tape, and even if it is bent during construction, etc. Since it is held by the (reinforcing layer) and is not separated, it has excellent workability.

[0012] More specifically, the split fiber nonwoven fabric in which the skin material is made of polyolefin resin. It is preferable that the aluminum foil is configured to be crimped to.

More specifically, it is preferable that the inorganic fiber heat insulating material is configured to have a glass wool force.

[0013] Further, in the present invention, the outer wall surface member has a side end portion extending a predetermined dimension from the side end surface of the panel frame toward the steel column side, thereby interposing the steel column. A joint between the two outer wall materials arranged between the outer wall materials is provided on the outdoor side of the steel column, and a joint corresponding to the joint between the outer wall materials is provided on the outdoor side of the joint heat insulating material. It is preferable that a seal member is attached. In this way, the joint heat insulating material can be used as a backup material for the joint seal material attached to the joint of the outer wall surface material, so that the joint seal material can be constructed with high accuracy.

[0014] Further, in the present invention, the heat insulating board and the outer wall surface material are arranged with a predetermined gap therebetween, and a vertical ventilation trunk edge that divides the gap is arranged in the gap, and It is preferable that the gap defined by the trunk edge communicates with the upper space and the lower space of the heat insulating board so as to function as a ventilation layer. In this way, since the ventilation layer is provided on the outdoor side of the structural housing, moisture that has entered from the outside due to ventilation in the wall can be efficiently discharged.

The invention's effect

[0015] According to the present invention, the following effects can be obtained.

In the outer wall body of the present invention, the ventilation layer and the heat insulating layer are disposed on the outdoor side of the structural housing and have an outer heat insulating structure, so that the structural housing is less susceptible to the influence of external temperature changes. It is hard to be done. Further, by providing the ventilation layer, moisture entering from the outside can be efficiently discharged. As a result, the durability of the structural housing, where condensation on the surface of the structural housing is difficult to occur, is improved.

Further, in the outer wall body of the present invention, the joint of the heat insulation board, which is the outer heat insulating material, is located on the outdoor side of the steel column, and the joint heat insulating material is attached to the outdoor side of the steel column and disposed on the joint part. Yes. Accordingly, since the joints of the outer heat insulating material do not become a thermal bridge, the heat insulating property is improved and internal condensation is unlikely to occur. In addition, since the joint heat insulating material can be used as a backup material for the joint sealing material that is attached to the joint of the outer wall material, the joint sealing material can be applied with high accuracy. Togashi.

Since the surface of the heat insulating board, which is the outer heat insulating material, is reinforced, the outer heat insulating material can be held in a plate shape. Therefore, the workability is excellent and the outer wall surface material can be attached stably.

Brief Description of Drawings

FIG. 1 is a cross-sectional view of an outer wall body of the present invention.

FIG. 2 is a longitudinal sectional view (XX sectional view of FIG. 1) of the outer wall body of the present invention.

FIG. 3 is a partially cutaway explanatory view of the outer wall body of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the members, arrangement, configuration, and the like described below can be variously modified within the scope of the present invention, which does not limit the present invention.

1 to 3 show an embodiment of the outer wall body of the present invention. FIG. 1 is a transverse sectional view of the outer wall body, and FIG. 2 is a longitudinal sectional view of the outer wall body (XX sectional view of FIG. 1). FIG. 3 is a partially cutaway explanatory view of the outer wall body.

[0018] An embodiment in which the outer wall body of the present invention is applied to an outer wall W formed by joining an outer wall panel A and a steel column B used for forming an outer wall portion of a building such as a house or various structures. Will be described.

[0019] The outer wall panel A (panelized outer wall body) in this example is installed between the steel column B standing up as a structural frame of the building, so that the outer wall W of the building together with the steel column B Is composed. In this way, if each member constituting the outer wall W of the building is made into a panel in advance, at the construction site, after the steel column B is erected according to the building method, the outer wall panel A unitized into this steel column B The outer wall W can be constructed simply by attaching. Therefore, the number of on-site construction man-hours can be reduced, and the construction period can be shortened. In addition, by producing the outer wall panel A in advance with standard specifications, quality control can be performed appropriately and costs can be reduced. Therefore, the outer wall W can be formed with stable quality and cost.

[0020] The outer wall W formed by joining the outer wall panel A and the steel column B has such a stable quality. Is suitable for buildings that are mass-produced such as houses. In addition, since the constituent members are unitized, it is suitable for system construction configured using parts that have been pre-defined in advance! / Also, the outer wall panel A of the outer wall W of the present invention is provided inside. It has a ventilation layer and a heat insulation layer, and the ventilation layer and the heat insulation layer are disposed on the outdoor side of the structural housing. Therefore, the heat insulation of the place that was formerly the thermal bridge is improved. As a result, the structural housing is cooled by the influence of external temperature changes. In addition, moisture provided from the outside can be efficiently discharged by providing the ventilation layer. As a result, condensation on the surface of the structural body is less likely to occur, and the durability of the structural body is improved.

[0021] The outer wall panel A is attached to the panel frame 10, the heat insulating material 20 loaded on the inner peripheral side of the panel frame 10, and the outdoor surface of the panel frame 10, as shown in FIGS. A plate-like heat insulation board 30, a ventilation trunk edge 40 fixed to the outdoor side surface of the insulation board 30, an outer wall surface material 50 attached to the outdoor side surface of the ventilation trunk edge 40, and a panel frame 10 The main components are a moisture-proof film 60 affixed to the indoor-side surface and a base frame 70 fixed to the indoor side of the moisture-proof film 60.

The panel frame 10 is formed by joining a steel material having a predetermined cross section to a shape (eg, a rectangle) corresponding to the outer shape of the outer wall panel A by welding or the like. In this example, the outer height dimension of the panel frame 10 is a dimension corresponding to the floor height of the building, and the width dimension is a dimension corresponding to the interval between adjacent steel columns. In the case of system construction, since structural members such as pillars are arranged at a constant module interval, the width dimension of the panel frame 10 is usually a dimension corresponding to an integral multiple of the module dimension.

[0023] The panel frame 10 of this example may use a steel material such as a force angle material, a C-shaped cross-section material, and a prismatic material formed using a steel material having a groove-shaped cross section. In addition, instead of steel, aluminum or other alloy may be used, and an anti-fouling treatment or a tacking treatment may be performed as appropriate.

The outer wall panel A is attached between adjacent steel columns B by bringing the vertical frame members on both sides of the panel frame 10 into contact with the side surfaces of the steel columns B and integrally joining them with bolts or the like. In addition, the upper and lower horizontal frame members of the panel frame 10 are joined to the base plate joined to the upper end of the foundation or the upper end face or the lower end face of the beam member. Various joining methods Various known methods can be used, such as using bolts or joint hardware.

In addition, a vertical beam 11 is attached to the center of the panel frame 10. The upper and lower ends of the vertical beam 11 are fixed to the upper and lower horizontal frames of the panel frame 10. Further, a fixing plate 12 for fixing the outer wall surface material 50 to the outdoor side surface is attached to the vertical beam 11. It should be noted that the panel frame 10 can be attached to the outer wall panel A with an opening, a ventilation opening, or the like by appropriately attaching a vertical beam or a horizontal beam at a predetermined position of the panel frame 10 as a base material. In addition, when the outer wall panel A is used as a proof panel, an X-shaped brace material is attached to the panel frame 10. For the brace material, flat steel (flat bar) or turnbuckle is used. If the outer wall panel A is a non-bearing panel, no brace material is required.

The heat insulating material 20 is loaded so as to have a thickness substantially the same as the thickness dimension of the panel frame 10. In this example, since the panel frame 10 is formed with the opening side of the groove-shaped cross section of the vertical and horizontal frame materials facing the inner peripheral side of the panel, the heat insulating material 20 is also disposed in the opening of the groove-shaped cross section. Yes. When braces, vertical bars, and horizontal bars are attached at predetermined positions within the thickness dimension of the panel frame 10, they are embedded in the heat insulating material 20. On the other hand, when braces, vertical bars, horizontal bars, etc. are provided so as to be flush with the surface of the panel frame 10 on the outdoor side or indoor side, they are exposed on the surface of the heat insulating material 20. In this example, glass wool is used as the heat insulating material 20 Other fiber-based heat insulating materials such as rock wool and foamed resin heat insulating materials such as urethane foam may be used.

[0026] The heat insulating board 30 is a plate-like member that abuts on the outdoor side surface of the panel frame 10 and covers the outdoor side of the panel frame 10 without a gap, and the outer shape thereof is substantially the same as the outer shape of the panel frame 10. ing.

The heat insulation board 30 of this example is formed of an inorganic fiber heat insulation material (for example, glass wool) having a predetermined density (for example, 98 kgZm ³ or more) in a plate shape, and one of the front surface and the back surface has a lattice network. The upper surface is reinforced with a skin material formed of an aluminum layer, and the other surface is reinforced with a glass bevel. Thus, the heat insulation board 30 is maintaining the plate-shaped form by having the structure which reinforced the surface. Therefore, the panel frame 10 can be brought into contact with the surface on the outdoor side and joined, and the panel frame 10 can be connected to the outdoor temperature environment. Can be surely insulated. Also, even if the heat insulation board 30 is refracted during construction or the like, the internal inorganic fiber heat insulating material is held and separated by the lattice mesh (reinforcing layer) of the skin material. Therefore, it is excellent in workability. Further, the heat insulating board 30 has both heat insulating properties and fireproofing properties due to such a configuration.

In this example, the surface of the heat insulation board 30 reinforced with glass paper is brought into contact with the panel frame 10. Since the surface reinforced with glass paper is smooth, it can be easily attached to the surface of steel, etc. with double-sided adhesive tape. Also

Alternatively, an adhesive may be applied and adhered.

In addition, as a surface material on the outdoor side of the heat insulation board 30, a skin material formed by forming an aluminum layer on the top surface of the lattice network is provided. It can be well insulated. In addition, the aluminum layer serves as a moisture-proof layer, and the strength of the aluminum layer covers the outside of the panel frame 10 without any gap, so that moisture can be prevented from entering the panel frame 10 from the outside. In addition, if double-sided waterproof tape is continuously applied between the panel frame 10 and the heat insulating board 30, it is possible to prevent moisture from entering the side of the panel frame 10 as much as possible.

[0028] Further, instead of the aluminum layer or the glass paper layer, a moisture permeable waterproof layer may be formed by attaching a moisture permeable waterproof sheet. The moisture permeable waterproof layer allows moisture such as steam to pass through but does not allow moisture such as rainwater to pass through. Accordingly, moisture can be discharged from the panel frame 10 side to the outdoor side (the ventilation layer 41 side described later), while the outdoor side force can also prevent moisture from entering the panel frame 10 side.

It is to be noted that, instead of such a heat insulating board 30, it is possible to obtain an inexpensive structure by using a board of a foamed plastic type heat insulating material (foamed resin heat insulating material) which has been conventionally used. However, in this case, the panel frame 10 side force also has a high resistance to moisture permeation to the outdoor side (the ventilation layer 41 side described later), so when moisture flows from the indoor side to the panel frame 10 side. Increases the possibility of internal condensation.

[0029] Next, the configuration and characteristics of the heat insulating board 30 will be described in more detail.

Examples of the inorganic fiber insulation used for the heat insulation board 30 of this example include heat-resistant ceramic fibers such as glass wool and rock wool. Glass wool (short glass fiber) having excellent heat insulation performance is particularly preferable. As the inorganic fiber heat insulating material, a high density material having a density of 98 kgZm ³ or more, preferably 120 kgZm ³ or more, more preferably 130 kgZm ³ or more is used. The reason for using high-density inorganic fiber heat insulating material in this way is that it has a moderate rigidity and good shape retention, so it can be easily formed into a board shape and has a short shape with a flat cross section. It is because it is obtained. A low density inorganic fiber heat insulating material with a density smaller than 98 kgZm ³ is not preferable because it is easy to break if it is long and thin, which is difficult to form in a board shape, and the workability deteriorates. In addition, the upper limit of the density of the inorganic fiber heat insulating material is not particularly limited, but it becomes heavier and economically disadvantageous as the density increases. Taking these into consideration, the density of the inorganic fiber insulation is preferably 400 kgZm ³ or less.

[0030] Therefore, when the inorganic fiber heat insulating material is glass wool, the density of the glass wool is higher than that of low-density (for example, 80 kgZm ³ or less) glass wool generally used as a heat insulating material. Such high-density glass wool compresses short glass fibers that have been fiberized in the normal glass wool manufacturing process until the desired density and thickness are obtained, and in this state the fibers are fixed together with a binder to form a plate shape. Can be obtained.

[0031] The skin material used for the heat insulating board 30 of this example is a surface reinforcing material of an inorganic fiber heat insulating material, and has a composite structure in which an aluminum layer is formed on a lattice network. This aluminum layer has a function to improve heat insulation performance by heat reflection and fire resistance, and since it can be easily combined with the lattice network, an aluminum foil is usually used. It may be formed as. In the case of aluminum foil, compounding with the lattice network can be performed by pressure bonding or adhesion. In this case, the thickness of the aluminum foil is preferably 7 to 50 / ζ πι. If it has a thickness in this range, there is no problem in strength, and it can be easily combined with a lattice network. Note that the upper limit of the thickness is determined for the sake of convenience, because even if it is thicker than 50 m, the cost increases and the performance is almost unchanged.

[0032] On the other hand, the main role of the lattice network used in the heat insulating board 30 of this example is to reinforce the surface of the inorganic fiber heat insulating material, but at the same time, the aluminum layer is formed by interposing the lattice network as a carrier for the aluminum layer. Can be easily applied to the surface of the inorganic fiber heat insulating material. Specifically, the surface of the inorganic fiber heat insulating material is reinforced with a skin material by attaching a lattice network to the surface of the inorganic fiber heat insulating material, and at the same time, the surface of the inorganic fiber heat insulating material is covered with an aluminum layer. It is. For this reason, examples of the lattice network include a split fiber nonwoven fabric, a net-like material such as polyethylene or polypropylene, an organic fiber nonwoven fabric, a glass scrim cloth, and a glass fiber nonwoven fabric. Preferably, a split fiber nonwoven fabric made of polyolefin resin such as polyethylene resin or polypropylene resin is used. For example, Nisseki Rif (trade name) is suitable as a split fiber nonwoven fabric made of polyolefin resin. It is. This split fiber nonwoven fabric is, for example, a stretched and reinforced multilayer polyolefin split fiber that is continuously laminated vertically and horizontally and heat-sealed into a mesh structure. This mesh structure allows breathability, water permeability, It possesses excellent properties such as lightness, high strength, and light transmission. This mesh structure is also suitable for combining a lattice network and an aluminum layer due to fine irregularities on the surface. The thickness of the lattice network is not limited, but is preferably about 50 to 200 / ζ πι for practical use, and typically about 100 μm.

[0033] Further, the glass paper used for the heat insulating board 30 of this example is made by combining glass fibers with a sizing agent into a paper shape. By attaching this glass paper to the back surface of the inorganic fiber heat insulating material, inorganic glass paper is used. The back side of the fiber insulation can be reinforced. In addition, the surface of the very rough inorganic fiber heat insulating material can be smoothed by covering it with glass paper, and it has excellent fire resistance. In other words, the smooth surface of the glass paper itself can be obtained by covering the outer surface of the inorganic fiber heat insulating material with the force glass paper having irregularities that cannot be adapted to adhesion as it is. As a result, the outer joint heat insulating material can be easily attached to, for example, a double-sided adhesive tape on a steel column. Known glass paper can be used as appropriate, and its thickness and manufacturing method are not specified. However, in order to obtain a desired strength, a weight of about 15 to 60 gZm ² is preferable, and typically about 25 gZm. ² .

[0034] Based on the above-described features, the heat insulating board 30 of the present example more specifically has a polyolefin-based surface on the surface of a long inorganic fiber heat insulating material having a glass wool force with a density of about 140 kgZm ³ , for example. Adhere a surface material made by crimping an aluminum foil with a thickness of about 7 μm on the top surface of a split fiber nonwoven fabric made of coconut resin (Nisseki Rif: trade name), and a glass paper with a weight of about 25 g / m ² on the back surface. It is formed by bonding and reinforcing one.

The ventilator rim 40 is a plate material having a predetermined thickness, and three pieces are vertically attached to the outdoor side surface of the heat insulation board 30. In other words, the ventilator rim 40 is vertically aligned with the left and right ends of the panel frame 10. It is arranged at a position that overlaps the frame material and a position that overlaps the central vertical rail 11. As shown in FIGS. 2 and 3, a ventilation space (ventilation layer 41) is formed between the adjacent ventilation trunk edges 40 so as to communicate the upper end side and the lower end side of the outer wall panel A up and down. . The ventilator rims 40 disposed at the left and right ends of the panel frame 10 are extended by a predetermined dimension from the left and right ends of the heat insulation board 30 to the steel column B side.

The ventilator rim 40 may be arranged at a narrower pitch than in this example. For example, four or more ventilator rims 40 may be disposed on the surface of the heat insulating board 30 on the outdoor side. However, it is necessary to provide a fixing base frame or the like at the position where the ventilator rim 40 is disposed.

[0036] The outer wall surface material 50 is attached to a further outdoor surface of the ventilator rim 40, and is disposed so as to cover the outer surface of the outer wall panel A. In this example, a ceramic siding material such as a fiber reinforced cement board is used as the outer wall surface material 50. Use ALC plates with closed cells or siding materials with tiles or metal plates attached to the surface.

[0037] The outer wall surface member 50 is fixed to the ventilator rim 40 by a fixing screw from the outdoor side.

At the left and right ends of the outer wall panel A, fixing screws pass through the ventilation trunk edge 40 and the heat insulating board 30 to reach the panel frame 10. Accordingly, the three members of the outer wall surface material 50, the ventilating drum edge 40, and the heat insulation board 30 are fixed to the panel frame 10 by the fixing screws. Further, in the center of the outer wall panel A, the fixing screw passes through the outer wall surface material 50 and the ventilation trunk edge 40 and reaches the fixing plate 12 disposed on the outdoor side of the vertical beam 11. As a result, the outer wall surface material 50 and the ventilation trunk edge 40 are fixed to the vertical beam 11 via the fixing plate 12.

[0038] The outer wall surface material 50 is flush with the end surface of the ventilator rim 40 projecting toward the steel column B side at the end surface forces on the left and right ends. In this example, outer wall panels A are attached to both side surfaces of the steel column B. Therefore, the left and right side forces extend to the outdoor side of the steel column B so that the ventilator rim 40 and the outer wall surface material 50 face each other, and their end faces face each other with a predetermined gap therebetween. In other words, joints of the outer wall material 50 are formed on the outdoor side of the steel column B.

At the joint, the primary gasket 51 is installed on the most outdoor side, and the secondary gasket 52 is installed on the inside. Between the secondary gasket 52 and the steel column B, a joint insulation 31 for thermal bridge protection is disposed. In this example, the joint insulation 31 is hard. Quality urethane foam material is used. The same heat insulating material as the heat insulating board 30 may be used as the heat insulating material 31 for joints.

[0039] The joint heat insulating material 31 can be attached to the steel column B by a double-sided adhesive tape in the same manner as the heat insulating board 30. Similarly, the secondary gasket 52 can be attached to the joint insulation 31 using a double-sided adhesive tape.

The thickness and width of the joint heat insulating material 31 are appropriately determined according to the location where the joint heat insulating material 31 is applied. For example, the thickness is set to be equal to or smaller than the depth dimension of the gap between the ventilator edge 40 and the steel column B. In this example, since the secondary gasket 52 is installed outside the joint heat insulating material 31, the thickness obtained by taking the thickness of the secondary gasket 52 into consideration is set to be approximately equal to the depth dimension. It is preferable. In addition, if the length of the joint insulation 31 is too short, a large number of joint insulations 31 must be attached along the steel columns, etc. In addition, the production is also complicated, which is not preferable. On the other hand, if the length is too long, it will be easy to break and handleability and workability will deteriorate.

[0040] A moisture-proof film 60 is attached to the surface of the panel frame 10 on the indoor side. In this example, an aluminum vapor-deposited film is used as the moisture-proof film 60! /. When the moisture-proof film 60 is attached to the indoor side in this way, moisture can be prevented from entering the panel frame 10 from the indoor side. Further, a base frame 70 such as a wooden frame is fixed to a predetermined position on the indoor side of the moisture-proof film 60 with a screw or the like. A base board 71 such as a gypsum board is fixed to the base bar 70 and becomes a base for the interior finishing material on the indoor side. In this example, the base beam 70 is included in the component parts of the outer wall panel A and unitized, but it may be constructed on the site after the outer wall panel A and the steel column B are joined. The base board 71 is constructed on site.

[0041] When installing the outer wall panel A on both sides of the steel column B, first attach the joint insulation 31 and the secondary gasket 52 to the steel column B, then use the panel frame 10 to move the steel column B left and right. Fix with bolts and screws so that they are pinched from both sides. Then, a heat insulating material 20 (for example, glass wool) is appropriately loaded into the steel column B with the opening force on the indoor side. Then, the base board 71 is attached to the base bar 70 with nails or the like on the indoor side of the outer wall panel A.

[0042] In the state where the outer wall panel A is attached to the steel column B, the outdoor of the steel column B is The joint portion of the outer wall panel A is formed on the side. The joint insulation 31 and the secondary gasket 52, which are attached to the outdoor side of the steel column B in advance with double-sided adhesive tape, are accommodated in this gap. The joint portion of the outer wall panel A is formed along the steel column B outside the joint heat insulating material 31 and the secondary gasket 52 accommodated in the gap portion, and the joint portion is sealed by the primary gasket 51.

[0043] As described above, in this example, the heat insulating board 30 as an external heat insulating material is provided on the outdoor side of the steel column B and the panel frame 10, and the heat insulating material 31 for the joint is provided at the joint between the outer wall panels A. By providing it, the heat insulation is improved and the structural frame of the outer wall W is difficult to be cooled. In particular, the joints of the outer wall W are protected so as not to become thermal bridges, so that the heat insulation is improved and internal condensation occurs. Therefore, durability is improved.

[0044] Further, in this example, by installing the ventilation trunk edge 40 between the heat insulation board 30 and the outer wall material 50, the upper end side and the lower end side of the outer wall panel A are turned up and down on the outdoor side of the heat insulation board 30. A communicating ventilation space is formed. Thereby, ventilation in the wall can be performed, and moisture in the wall can be discharged to the outside.

In addition, the use of the heat insulating board 30 that has both heat insulation and fire resistance and has a reinforced surface as the outer heat insulating material enables stable installation of an outer wall material with good workability.

Claims

The scope of the claims

[1] An outer wall body comprising a steel column and an outer wall panel attached to a side of the steel column,

The outer wall panel includes a panel frame joined to the steel column, a heat insulating board attached to the outdoor side of the panel frame, and an outer wall surface material attached to the outdoor side of the heat insulating board,

A joint between the two heat insulating boards arranged with the steel column in between is provided on the outdoor side of the steel column,

An outer wall body characterized in that a joint heat insulating material is attached to a surface on the outdoor side of the steel column corresponding to the joint between the heat insulating boards.

[2] The outer wall body according to [1], wherein at least one of the heat insulating board and the joint heat insulating material is made of a foamed resin heat insulating material.

[3] At least one of the heat insulating board and the joint heat insulating material has a density of 98 kgZm.

^One- sided force of ^three or more inorganic fiber heat insulating materials Reinforced with a skin material formed by laminating an aluminum layer on the upper surface of the lattice network, and the other side surface is reinforced with glass paper Item 2. The outer wall body according to item 1.

[4] The outer wall body according to [3], wherein the skin material is formed by pressure-bonding an aluminum foil to a split fiber nonwoven fabric made of polyolefin resin.

5. The outer wall body according to claim 3, wherein the inorganic fiber heat insulating material has a glass wool force.

[6] The outer wall surface material is arranged in such a manner that the side end portion thereof is extended to the steel column side by a predetermined dimension from the side end surface of the panel frame, so that the two outer wall materials are disposed with the steel column interposed therebetween. A joint between the outer wall materials is provided on the outdoor side of the steel column;

2. The outer wall body according to claim 1, wherein a joint sealing member is attached to the outdoor side of the joint heat insulating material so as to correspond to the joint between the outer wall surface materials.

[7] The heat insulating board and the outer wall surface material are disposed with a predetermined gap therebetween, and a vertical ventilation trunk edge that divides the gap is disposed in the gap, and is partitioned by the ventilation trunk edge. In addition, since the gap communicated with the upper space and the lower space of the heat insulation board, it functions as a ventilation layer. The outer wall body according to claim 1, wherein the outer wall body is f ”.