JPS628272Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a corner member used around a corner between a roof base made of concrete or the like and a rising wall on the periphery thereof in a roof structure of a building using the insulation waterproofing method or other waterproofing method.

The roofs of concrete buildings, etc. usually have rising walls around the edges, and conventionally, as shown in Figure 1, the waterproofing method for such roofs is as follows:
A waterproof layer 4 made of asphalt roofing paper or the like is provided on the upper side of the concrete roof base 1 and the inside of the rising wall 2, which are part of the building frame, with a leveled mortar layer 3 interposed therebetween, and a pressure and protection layer is provided on top of the layer 4 of asphalt roofing paper. There is a structure in which a concrete layer 5 which also serves as a concrete layer 5 is provided, and a holding protection layer 6 made of brickwork is provided inside the rising wall 2. Furthermore, a so-called heat insulation waterproofing method is also practiced in which a layer of heat insulating material such as a synthetic resin foam is provided either above or below the above-mentioned waterproof layer or between two waterproof layers. Furthermore, instead of the concrete layer that serves both to hold down and protect the waterproof layer or the heat insulating layer, a concrete block or the like is sometimes laid down. In both construction methods, the corners of the roof base and rising walls are formed in a diagonal shape using leveled mortar to facilitate the installation of a waterproof layer such as asphalt roofing paper and to prevent damage to it. .

However, in the roof structure of the above-mentioned construction method, the upper concrete layer, etc., which is the protective layer, is directly heated by sunlight, etc., so the thermal expansion is larger than that of the lower layer of the roof base, especially in the summer. expansion becomes large. Nevertheless, as shown in Figure 1, the concrete layer etc. is provided with the side end surface facing the rising wall, so the expansion presses the rising wall outward, which causes Rips and cracks are relatively likely to occur in the building frame itself near the corners of the roof base and rising walls.

In view of the above, the present invention was devised to eliminate the drawbacks of roof structures using waterproofing methods.
A corner member interposed between a rising wall and a holding concrete layer, etc. around the corner of a roof base and a rising wall, especially a corner member having elasticity that can tolerate expansion and contraction of the concrete layer, etc. It is an object of the present invention to provide a corner member that has good integrity with the concrete layer and is capable of effectively absorbing the expansion action of the concrete layer even at the upper end of the corner member.

That is, the present invention is a synthetic resin foam molded body having elasticity and having a required length, and is formed by forming a horizontal wall portion and a vertical wall portion extending in the longitudinal direction, and a diagonal wall portion between these two wall portions. , groove-shaped recesses are formed on the inner surface of at least one of the horizontal wall portion and the vertical wall portion at required intervals in the longitudinal direction from the bending boundary with the inclined wall portion, gradually sloping toward the outer surface side and reaching the end surface. It is characterized by

Next, embodiments of the present invention will be described based on the drawings.
In FIGS. 2 to 6, reference numeral 10 indicates a corner member according to the present invention, which is made of a synthetic resin foam molded body having a required length and having appropriate elasticity, and is particularly suitable for the horizontal surface on the roof base side in a waterproof roof structure. A horizontal wall portion 11 and a vertical wall portion 12 extending in the longitudinal direction and between the two wall portions 11 and 12 are formed so as to substantially correspond to the vertical surface on the rising wall side and the sloped portion formed by leveling mortar of the corner portion on both sides. A slanted wall portion 13 is integrally formed. The height of this corner member 10, that is, the height from the lower surface of the horizontal wall portion 11 to the upper end surface of the vertical wall portion 12, is formed so as to be approximately equal to the thickness of the concrete layer or the like serving as the presser protection layer. Further, the thickness of the corner member 10 may be set by considering the elasticity and shape-retaining strength of the material, but at least the thickness of the vertical wall portion 10
2 is set to allow expansion and contraction of the concrete layer etc. due to its elasticity.

Then, the horizontal wall portion 11 of the corner member 10
The inner surface of the vertical wall portion 12 is formed with groove-shaped recesses 14 that gradually incline toward the outer surface from the bending boundary with the inclined wall portion 13 and reach the end surface at required intervals in the longitudinal direction. It has an uneven shape with the convex remaining part between, which improves the adhesion (biting) with the concrete layer etc. in contact with this. Further, the unevenness may be provided on one of the horizontal wall portion 11 and the vertical wall portion 12.

Furthermore, in the embodiments of FIGS. 2 to 4,
Convex portions 15a, 16a and concave portions 15b, 16b are alternately formed at both ends in the longitudinal direction of the corner member 10.
A joining means with a mutually opposite shape is provided to facilitate connection using an adhesive means or the like. Further, in the embodiment shown in FIG. 5, a dovetail-shaped protrusion 17 is provided at one end in the longitudinal direction of the corner member 10, and the width becomes wider toward the tip, and a groove 18 into which the protrusion 17 fits is provided at the other end. This makes it possible to connect and use without requiring any adhesive means.

As the constituent material of the corner member 10, polyolefin resin foams such as polyethylene, polypropylene, and copolymers mainly composed of these, styrene resin foams, and other synthetic resin foams having appropriate elasticity are preferably used. used.

The present invention is constructed as described above, and is used around the corner between the roof base 1 and the rising wall 2 in the roof structure of concrete building waterproofing method. A leveled mortar layer 3 is laminated on the upper surface and the inner surface of the rising wall 2, and the corner portion where the two surfaces intersect is formed obliquely, and an adhesive layer is applied on this leveled mortar layer 3 as necessary. A waterproof layer 4 made of asphalt-based waterproofing, sheet waterproofing, urethane waterproofing, paint film waterproofing, etc. is installed through the
In particular, the roof base 1 side and the rising wall 2 side are leveled and installed in a continuous curved manner along the slanted part 7 made of a mortar layer. And the corner member 10 according to the present invention,
It is sufficient to set it on the waterproof layer 4 around the corner of the roof base 1 and the rising wall 2, and this corner member 10 consists of a horizontal wall part 11, a vertical wall part 12, and a diagonal wall part 13 between the two walls. Therefore, these outer surfaces can be attached and set in a stable manner without gaps in correspondence with the horizontal plane on the roof base 1 side, the vertical plane on the rising wall 2 side, and the slope formed by the sloped portion 7. In this way, a concrete layer 5 serving as a holding protection layer is laminated on the waterproof layer 4 on the inner surface side of the corner member 10, and a corner member 10 is interposed between this concrete layer 5 and the waterproof layer 4 on the rising wall 2 side, Further, a finishing mortar layer 8 is provided as necessary, and a protective layer 6 made of brickwork or the like is provided inside the waterproof layer of the rising wall 2. In addition, in the heat insulation waterproofing method, the corner member 1 of the present invention is laminated with a heat insulating material layer such as synthetic resin foam together with the waterproof layer 4.
It is sufficient to set the value to 0, and the construction can be carried out in the same manner as described above by providing a concrete layer to serve as a presser protection layer. In addition, when a concrete block or the like is laid as the presser protection layer, the end portion of the block or the like used in the peripheral portion may be formed to correspond to the shape of the inner surface of the corner member 10.

As described above, in the present invention, the horizontal wall section 11, the vertical wall section 12, and the inclined wall section 13 between these two wall sections are integrally formed, so that the roof base 1 and the rising wall 2 in the waterproof roof structure are connected. Around the corner,
It can be made to correspond to the horizontal plane on the roof base side, the vertical plane on the rising wall side, and the sloped part made of leveled mortar. It can be used by interposing it between the two. Further, on the inner surface of at least one of the horizontal wall section 11 and the vertical wall section 12, inclined groove-shaped recesses 1 are formed at required intervals in the longitudinal direction from the bending boundary with the oblique wall section 13 to the end surface.
4 is formed, and the inner surface has an uneven shape of the concave portion 14 and the convex residual portion, so the bonding strength with the concrete layer is high, and peeling etc. will occur due to expansion and contraction of the concrete layer. There is no fear. Moreover, since the corner member 10 of the present invention is made of a synthetic resin foam molding having elasticity, the corner member 10 can prevent the expansion and contraction of the upper concrete layer, etc., which is the protective layer of the waterproof roof structure. This is permissible, and even if the upper concrete layer, etc. has a larger thermal expansion than the roof base in the summer, and extends in the surface direction, the corner member 10 can absorb the extension and press the rising wall 2 outward. You can prevent it from happening.

In particular, since the material is made of synthetic resin foam and has a solid internal shape, the entire corner member including the end has a substantially uniform elasticity, and the elasticity of the concrete layer due to expansion, i.e., the rising wall. In contrast, the force in the pressing direction can be reliably absorbed and dispersed even at the upper end where the upper part of the concrete layer comes into contact, and it is advantageous to provide the groove-shaped recess 14 on the inner surface that becomes deeper toward the end as described above. Not only can this be done without any problem, but also the recesses 14 can reliably absorb and disperse the stress caused by the expansion of the concrete layer. Furthermore, by forming the recess 14 in a shape that gradually slopes outward from the bending boundary with the slanted wall 13 and reaches the end surface, the roof base and the riser where the stress exerted by the expansion of the concrete layer is greatest. The wall thickness of the corner member is larger near the corner with the wall, which not only improves the integrity with the concrete layer, but also improves the thickness of the corner member 1.
In addition to being excellent in maintaining its strength, it also has a good effect on absorbing expansion of the concrete layer.

Therefore, according to the corner member of the present invention, it has good integrity with the concrete layer, and the expansion of the concrete layer can be reliably absorbed even at the upper end of the corner member, thereby preventing cracks near the corner between the roof base and the rising wall. This can effectively prevent the occurrence of cracks and cracks.

In this way, the present invention greatly contributes to the improvement of roof structures using waterproofing methods.

[Brief explanation of the drawing]

Fig. 1 is a sectional view illustrating a conventional waterproof roof structure, Fig. 2 is a perspective view showing an embodiment of the present invention, and Fig. 3 is a sectional view illustrating a conventional waterproof roof structure.
Figures 4 and 4 are enlarged cross-sectional views taken along lines - and -, respectively, Figure 5 is a perspective view showing another embodiment, and Figure 6 is a cross-sectional view showing a waterproof roof structure using the corner member of the present invention. It is a diagram. 1...Roof base, 2...Rising wall, 3...Leveling mortar layer, 4...Waterproof layer, 5...Concrete layer, 10...Corner member, 11...Horizontal wall part, 12...Vertical wall Section 13...Slanted wall section.

Claims (1)

[Claims for Utility Model Registration] 1. A synthetic resin foam molded product having a required length and having elasticity, forming a horizontal wall portion and a vertical wall portion extending in the longitudinal direction, and a diagonal wall portion between these two wall portions. Groove-shaped recesses are formed on the inner surface of at least one of the horizontal wall portion and the vertical wall portion at required intervals in the longitudinal direction from the bending boundary with the inclined wall portion, gradually sloping toward the outer surface side and reaching the end surface. A corner member used in a roof structure characterized by being made of 2. A corner member for use in a roof structure as claimed in claim 1 of the Utility Model Registration Claim, which comprises a synthetic resin foam molded product and a joining means formed by mutually opposing convex portions and concave portions at both ends thereof. 3. The synthetic resin foam molding is a polyolefin resin foam such as polyethylene, polypropylene, or a copolymer mainly composed of these. A corner member for use in a roof structure according to claim 1 or 2, which is made of polyvinyl chloride resin foam or other synthetic resin foam.