JPS6375240A - Construction method for connecting building exterior material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for joining architectural exterior materials such as architectural panels and sashes (hereinafter referred to as exterior materials).

(B) Prior Art Conventional architectural panels generally include metal panels and ordoclaved lightweight foamed concrete panels (hereinafter referred to as ALC panels), and their planar shapes are rectangular and square. A typical triangular shape is a hexagon.

Conventionally, the most common method for assembling this type of panel wall is to attach the panels at the construction site and then seal the joints on site.

Therefore, an external scaffold, or at least a hanging cage device (gondola) that can be moved horizontally and vertically for work purposes! e is essential.

When applying joint sealant, check the joint width, clean the joint,
A professional sealer will perform the installation process, including applying primer, inserting back-up material, applying curing tape, kneading the seal, or setting the cartridge in the seal gun, injecting the seal, smoothing with a spatula, and removing the curing tape. z・It was important. Furthermore, the weather at the time of construction can easily affect the results of the work. As a result, peeling defects in the seals are possible, and in the long term, the low deformability of viscoelastic cold vulcanized rubber against joint movement due to thermal expansion or otherwise, the loss of plasticizers in the rubber, The sealing material often breaks due to deterioration of the sealing material due to volatilization, decomposition and hardening due to ultraviolet rays, heat, etc. The only way to use this method at a low cost is to use a material with low performance for the sealing material.

On the other hand, using a so-called isobaric drainage system, external air pressure is introduced into the joint by using a rain barrier on the outside of the joint, a splash barrier inside, and an airtight (packing) material inside the joint. The so-called open joint construction method, which prevents water from entering due to pressure differences and minimizes the need for on-site sealant construction, and can be constructed without scaffolding, has become popular. However, since this construction method requires relatively sophisticated design, manufacturing, construction, and management, it is difficult to make it cheaper than the seal construction method described above.

For the joints of inexpensive panel walls, after impregnating the open-cell urethane foam material with unvulcanized butyl gonolyte or soft asphalt compound, the joints are pre-filled at the factory by 1/1/2 of the width of the pond.
1. After being compressed to a width of 1.5 mm, it is attached to the joints on site, and then gradually restored viscoelastically, and finally adheres (adhesively) to both sides of the panel joints in a compressed state of about 1/3. There is also. Although this joint material is relatively inexpensive, it is time-consuming and time-consuming.
Once the compressed joint material is restored, it is very troublesome to recompact the entire long length, and once the joint material has been restored, it will quickly restore itself even if it is recompacted. There are construction problems such as being very difficult to compact. Furthermore, due to the nature of the viscoelastic material, it is difficult to follow the deformation due to sudden and large movements of the panel joints that have already been constructed, and the unvulcanized rubber may peel off at the adhesive surface or become mushy over the long term. There are defects such as dust (= F adhesion) due to the stickiness of the soft compound and hardening due to volatilization of the thermoplastic agent.

In particular, in the case of joint joints of ALC panels, the tensile strength is low, so there is a risk that the surface side of the panel may break off and peel off at the adhesive interface. In steel structures, there are particular problems when using joints of metal panels that are subject to large deformation during earthquakes or wind pressure, or where metal panels undergo large and rapid thermal expansion and contraction.

(c) Problems to be solved by the invention The problems to be solved by the invention are as follows: When assembling architectural exterior materials, preparation for sealing the joints during construction work should be as simple as possible, and the sealing effect should be improved. Another object of the present invention is to obtain a method for joining exterior materials that can ensure drainage effects.

(d) Means for Solving Problems The joining method for architectural exterior materials of the present invention is applicable to exterior work in which a plurality of exterior materials of a predetermined shape are successively attached adjacent to each other on the exterior wall of a building. The joint material between the fin member and the packing member is attached in advance to a part of the joint part, and sometimes the exterior material is attached while adhering the packing material of the joint material of the adjacent exterior material and the side surface of the adjacent exterior material. The above-mentioned problems are solved by joining the materials together and adhering cross joint materials of a predetermined shape to the corners of each exterior material adjacent to the joint intersections.

The joint material is composed of a fin member and an airtight packing member, the fin member is arranged outside the joint, and the airtight packing member is arranged inside the joint, and an equal pressure space is created between the two members and the side surface of the adjacent exterior material. It is preferable to form a fin member and drain the water from the gap between the fin member and the sheathing material unit by unit using a drainage gradient in the center of the cross joint material and the upper part of the sheathing material.

(P) Example 1 [K is a plan view of an exterior material to which the construction method of the present invention is applied. Joint material 2 is adhered in advance to the long and short sides of exterior material 1 such as metal panels (A> and sash (B)) at a panel manufacturing factory.

The joint material 2 is made of an elastic foam material such as heat-vulcanized rubber. As best shown in FIG. 3, the joint material 2 is made up of a fin member 21 and an airtight packing member 22, which serve as a decorative cover and rain shield.

FIG. 3 shows a cross-sectional view of horizontal joints in a metal panel where the exterior material 1 is a metal panel. It is fixed to a reinforcing material 11 to form a metal panel 1.

The fin member 21 has a U-shape, as best shown in FIG. It is fixed to the metal plate 12 using an adhesive and an auxiliary member 4 preferably having an angular cross section on the inside thereof.

As shown in FIG. 3, the airtight packing member 22 is hollow in the center. This is the airtight packing part 2
2. It is provided to provide an appropriate repulsion elastic force and appropriate construction dimensions. Further, the airtight packing member 22 is provided with a notch 221 to facilitate adhesion.

The gas-tight packing member 22 is bonded to the metal plate 12 with the notched side of the member 22 located inside the joint, as best shown in FIG. These fin members 2
1 is attached to the exterior material 1, and the packing member 22 is attached to the exterior material 1' in advance.

On the other hand, as will be described later, when the next exterior material 1' is attached adjacent to the previously attached exterior material 1, the fin member 21 and packing Equal pressure spaces 211 and 222 are defined by the member 22 and the next exterior material 1'. Equal pressure space 211, 22
2 has the same pressure as the outside air and seals out wind and rain.

FIG. 2 is a front view showing a state in which the joints between the exterior members 11 are sealed with the joint material 2.3 by the method of the present invention. The above-mentioned joint material 2 is attached to the long side and the pheasant side of the exterior material 1, but at the corner of the exterior material 1, that is, at the intersection of the joints, there is a cross joint made of the same material as the joint material 2. Material 3 is installed.

FIG. 6 shows the cross joint material 3, and FIG. 7 shows the state in which it is attached to the cross joint portion. FIG. 8 is a longitudinal cross-sectional view taken along the line ■-■ in FIG. 7. The cross joint material 3 is made up of a bottom plate 31, vertical partition plates 32, 33, 34, and horizontal partition plates 35. A drainage port 3 is located in the center of the vertical partition plate 32 facing the outside of the joint.
6 is provided. Projections 321 and 331 are provided above the rain center portions of the outer vertical partition plate 32 and the middle vertical partition plate 33.
are provided for each.

As shown in FIG. 8, the bottom plate 31 is slightly sloped so as to descend toward the outside of the joint in order to facilitate drainage of infiltrated rainwater. Bottom plate 31 and vertical partition plate 32.3
3 to form a first groove, and the joint assembly sometimes communicates with the equal pressure space 211 of the fin member 21 described above. Bottom plate 31
A second groove is formed by the vertical partition plates 33 and 34, and the joint set f dimension sometimes communicates with the equal pressure space 222 between the fin member 21 and the packing member 22 described above.

The protrusions 321 and 331 act as a plow to block rain and wind from entering from the drain 36. The aforementioned second groove is provided for double safety; water that has entered the second groove flows into the vertical joint, falls down, and is discharged from the bottom of the joint.

The horizontal partition plate 35 partitions adjacent horizontal joints to ensure joint drainage for each section.

In the construction method of the present invention, a joint material 2 made of a foamed material or the like that has been preformed at a rubber factory or the like is attached in advance to an exterior material that has been preformed at a panel/sash factory or the like.

At a construction site, the exterior material 1 is installed from the indoor side without scaffolding. Adhesive is applied to the side surface without the joint material 2 of the previously attached exterior material 1, or the adhesive is sealed to the upper metal plate 12 of the packing part 22 of another exterior material 1 that can be accommodated. In this case, the filling 221 of the packing part 22 is glued in advance at the factory (FIGS. 3 and 4).

Furthermore, during installation, the cross joint material 3 is adhered and installed at the joint intersection (FIGS. 2 and 7). When installing the cross joint material 3, as shown in Figure 8, it is necessary to install the partition plate on the back side to form an equal pressure air layer that is effective in preventing rainwater that has entered the joint from entering the indoor side. It is preferable that the packing member 34 is not brought into contact with the packing member 22 but is attached with a slight gap.

When attaching the exterior material 1, the airtight packing member 22 of the joint material 2 is pressed with an appropriate compressive force so as to tightly adhere to the joint surface of another exterior material 1. Even if the adhesive protrudes into the airtight space 222 between the fin member 21 and the airtight packing member 22, it is hidden by the fin member 21 from the outside and is not visible, so there is no need for curing tape or spatula finishing, and anyone can easily remove the adhesive. It can be easily sealed and no gaps are created.

Even if there is a small part where the adhesive does not stick, the joint material 2.3
A minimum airtight effect can be ensured by the adhesive pressure.

Since the fin member 21 has a shape that is easily deformed,
It follows the deformation of the joint dimensions and fits nicely.

The outer fin element 21 protects the inner gas-tight packing element 22, the adhesive and the interface from rainwater and in particular from solar radiation.

Due to the synergistic effect of the deformation action of the airtight packing member 22 and the adhesive action of the adhesive, the joint material 2 is able to prevent any thermal expansion/contraction deformation of the exterior material 1, drying shrinkage, long-term seasonal deformation, wind or earthquake. It can easily withstand movement, including changes in the width direction of the joint, as well as in-plane and out-of-plane warming deformations parallel to the joint length direction, and can maintain the joint's watertight, airtight, sound insulation, and fireproof performance for a long period of time. .

The joint materials 2 and 3 can be made of materials with low compression reaction force during joint sealing work, such as foamed elastic materials, and they maintain airtightness not only by their own contact pressure but also by a low deformation rate due to adhesive force, making it easier to perform the joint sealing work. It is easy to follow changes in joint width. There is also less deterioration of airtightness due to compression fatigue.

If a defect in the airtight part or adhesive part is suspected, the interior can be inspected by simply turning over the fin member 21 from the outside, and it is also easy to repair it with a sealing material or the like. The repaired area is not visible from the outside.

If the joint material 2.3 is made of a material with a considerable degree of heat resistance and fire resistance, the fin member 21 will turn into ashes due to heat and protect the internal airtight area, which will also be advantageous in terms of the fire resistance of the joint material 2.3. .

Also, even if rainwater infiltrates inside the joint, the horizontal joint (Fig. 3)
In this case, rainwater is drained to the fin member 2 due to the drainage slope at the top of the exterior material 1.
tJF water is applied to each compartment from the gap between the lower side of the exterior material 1 and the exterior material 1. In the case of vertical joints (FIG. 4), the cross-joint material 3 is used to discharge rainwater from each section through the drainage port 36, so that infiltrated rainwater can be reliably treated and prevented from entering the room.

FIG. 5 shows an example of side joint sealing when the exterior material 1 is sash.

In the illustrated example, due to the structure of the sash, the adapter 6 is
It's on.

(to) effect According to the construction method of the present invention, the following effects can be obtained.

■Enables reliable joint construction.

■Can be reliably protected from rain.

■Since the dry joint material is pre-applied to the exterior material at the factory, it is possible to simplify the construction process and shorten the construction period by omitting the complicated work of filling the joint material on site.

■There is little deterioration in watertightness, airtightness, sound insulation, fire resistance, etc. of the joint material due to aging.

■Dry joint material can be repaired easily and easily.

■Easy construction and good appearance.

■It can also be applied to commercially available satsushi.

[Brief explanation of the drawing]

FIG. 1 is a front view of an exterior material to which the construction method of the present invention is applied. Second
The figure shows how the exterior material is assembled using the construction method of the present invention. Figure 3 is a cross-sectional view taken along the line ■-■ in Figure 2. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a cross-sectional view showing an example of a sash seal. FIG. 6 is a perspective view of the cross joint material. FIG. 7 is a front view showing a state in which the cross joint material is attached to the cross joint portion. No. 812ff is a vertical cross-sectional view taken from ■--■ in FIG. 7. 1: Exterior material 2: Joint material 3: Cross joint material 6: Adapter 21: Fin member 22: Airtight packing member Patent applicant Sumitomo Metal Industries, Ltd. (5 others) Figure 1 (A) (B
)Figure 2Figure 4Figure 5

Claims (2)

[Claims] (1) In exterior work in which a plurality of exterior cladding materials of a predetermined shape are sequentially attached adjacent to each other on the exterior wall of a building, joint material between fin members and packing members is applied in advance to some of the joints on the sides of the exterior cladding materials. When installing the exterior material, the packing member of the joint material of the adjacent exterior material and the side surface of the adjacent exterior material are bonded together, and the exterior materials are joined to each other, and at the corner of each exterior material adjacent to the joint intersection. A joining method for architectural exterior materials that consists of gluing cross-shaped joint materials. (2) The joint material is composed of a fin member and an airtight packing member, the fin member is arranged on the outside of the joint, and the airtight packing member is arranged on the inside of the joint, and the space between the two members and the side surface of the adjacent exterior material is Forming an equal pressure space,
2. The construction method according to claim 1, wherein water is drained unit by unit from the gap between the fin member and the exterior material using a drainage gradient in the center of the cross joint material and the upper part of the exterior material.