JPH11222988A - Waterproof structure having drainage ditch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by supporting a floor material laid on a drainage ditch by arranging a support member in the drainage ditch composed of a drainage slope inclined face of a steep slope arranged on a backing layer. SOLUTION: A flat roof F of a concrete structure is constituted by laying a walking floor material 5 on the upper surface of a waterproof backing layer 1 formed on a building frame C so that a drainage ditch 7 is arranged on the backing layer 1 in the vicinity of a parapet P. In this case, a steep slope-shaped drainage slope inclined face of a downward slope is formed toward the parapet P on a heat insulating material 2a of the bottom part of the drainage ditch 7. Next, a panel-like walking floor material 5a is horizontally supported in a flush shape with an adjacent walking floor material 5b on the upper surface by arranging a cross-sectional L-shaped floor support member 8 in the drainage ditch 7. Water flowing along the reverse of the floor material 5 is flowed down in the drainage ditch 7 by arranging plural water passing holes in a support member 8 when necessary. Therefore, a cost can be reduced by efficiently/easily performing execution work without requiring a complicated-shaped gutter member and complicated connecting work as usual.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure having a drainage groove formed by a steep water slope on a waterproof base layer on which a walking floor material such as a flat roof of a concrete building is laid. .

[0002]

2. Description of the Related Art Conventionally, in various work sites using a large amount of water, such as a flat roof of a concrete building, a floor of a balcony or a veranda, a poolside, a kitchen of a cafeteria or a food factory, heat insulating materials, rigidity, etc. A waterproof structure as a waterproof base layer composed of a holding panel material and a waterproof sheet is often used, and a drain groove is provided so that water flowing in the flat part is collected at a predetermined part and drained. On the waterproof base layer having such a structure, a walking floor material made of, for example, a panel-like synthetic resin is laid as a surface floor material.

For example, in a flat roof of a concrete building, as shown in FIG. 10 (a), an undercoat layer (21) having a waterproof function is provided on an upper surface of a frame (c) made of ALC by, for example, an insulating method. It is formed by sequentially laminating a heat insulating material (22) made of a foamed resin, a rigidity retaining plate (23) made of calcium silicate, and a waterproof sheet (24) made of a soft synthetic resin by a mechanical fixing method referred to as "mechanical fixing method". At this time, the underlayer (21) near the parapet (p) on the side of the flat roof (f)
And a trough-like member (g) made of a resin steel plate is fitted into the defect (u) and fixed to the frame (c) via the base layer (21). Drain (27)
And then forming the underlayer (2) including the gutter-like member (g).
1) Panel-shaped hard resin walking floor material (25) on the entire surface
And the flat roof (f) is completed. (26a) holds down the rigidity holding plate (23),
Further, a fixing device for joining the waterproof sheet (24) to the upper surface, (26b) is a fixing device for fixing the waterproof sheet (24) to the side surface of the parapet (p).
c) (26d) is a fixture for fixing the gutter-like member (g).

However, in a conventional waterproof structure having a drain groove (27) such as a flat roof having the above structure, as shown in FIG. 10 (b), in many cases, the gutter-like member (g) has a complicated shape. The manufacturing often requires work on site because of the above-mentioned shape, and welding or sealing is performed so that water leakage due to poor connection or the like does not occur in the connection of the upper gutter-shaped members (g) with each other. There is a problem that high precision is required for the above work, and the work itself is not only complicated but also costly.

[0005] The present invention solves the above problems.
Using known means for a part of the structure of the waterproof underlayer of the drainage ditch, forming a portion of the underlayer where the installation of the drainage ditch is to be formed into a specific shape, and further forming a portion inside the formed drainage ditch. , Installing a member of a specific shape to support the flooring,
If the walking floor material is supported by the member, the production and waterproofing work of the member can be easily performed, and furthermore, the laying state of the walking floor material laid on the upper surface of the waterproof base material of the flat roof, especially the entire surface thereof. The present invention has been completed with a view to obtaining a waterproof structure having a drainage groove for maintaining a safe laying state without impairing the flatness of the slab.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention utilizes a waterproof underlayer in a waterproof structure in which a walking floor is laid, and uses a waterproof base layer to lay a flat portion where a walking floor is laid. Irrespective of the above, the formation of the drainage ditch can be easily and easily formed, and the floor material for walking is provided on the upper surface of the waterproof base layer to improve its flatness and walking safety, and also to make the construction work simple and easy, It is an object of the present invention to provide a waterproof structure having a drain groove that can be laid at low cost.

[0007]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, the present invention provides a method for draining water from a flat portion such as a flat roof on which a floor material for walking is laid. In a waterproof structure having a drain formed by forming a slope, a floor material supporting member is installed inside the drain groove, and the floor material for walking is laid on the upper part of the drain groove by the floor material supporting member. The gist of the present invention is a waterproof structure having a drainage groove, characterized in that it is horizontally supported so as to be flush with another walking floor material adjacent to the walking floor material.

[0008] A preferred embodiment of the present invention is claim 2.
As described in the above, the cross-sectional shape of the floor material supporting member is substantially L-shaped, and is a waterproof structure having a drainage groove and formed of a long body. In addition, the length of the long body is set to a length that exceeds the width of the walking floor material laid on the upper surface.

In another preferred embodiment of the present invention, the floor member supporting member has a substantially L-shaped cross section and is formed of a short body. , A waterproof structure having a drain groove. The length of the short body is equal to or less than the width of the walking floor material laid on the upper surface,
The length should be at least sufficient to simultaneously support at least the corners of adjacent walking floor materials.

Further, in another preferred embodiment of the present invention, as described in claim 4, one or more water passage holes are provided on the upper surface of the floor material supporting member. It is a waterproof structure having a drain groove.

Still another preferred embodiment of the present invention is a waterproof structure having a drain groove, wherein the cross section of the floor member supporting member is substantially prismatic, as described in claim 5. is there.

As the construction of the waterproof underlayer in the waterproof structure of the present invention, a construction using a mechanical fixing method is applied, and other methods such as an adhesive method and an asphalt method are also applicable. In the present invention, description will be made mainly based on a waterproof underlayer of a construction structure by a mechanical fixing method.

In this type of waterproof structure, generally, the target portion where the drain is installed is often a portion near a rising wall such as a parapet on a land roof of a concrete structure. However, in the case of the present invention, it is possible to cover not only the above-described target portion but also a drain ditch installed near the center of a flat land roof which is always subjected to a walking load.

The floor material for walking used in the present invention is generally laid on a walking surface such as a conventional flat roof.
A rigid panel-like floor material is mainly used. The floor material is a material serving as a base material thereof, for example, cement mortar,
It is a panel-shaped block body in which various surface geometric members whose surface heights are flush with each other are provided on the upper surface of a panel made of a hard material such as wood or hard synthetic resin. The surface material is made of wood, tile, rubber, synthetic resin or the like, and the floor material used in the present invention may be any of them.

As described above, a part of the structure of the waterproof underlayer according to the present invention includes, as described above, a steep slope toward the parapet and a downward slope toward the parapet on the flat roof. An underlayer structure based on a known means, which is a structure of an underlayer constituting a drainage groove, is used. An example of the structure of the underlayer is disclosed in JP-A-4-52.
358 (known example 1) and JP-A-5-31819 (known example 2).

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
The embodiment will be described with reference to the drawings.

FIG. 1 is a sectional view showing a typical embodiment of the present invention. (F) is a flat roof of a concrete building, in which a waterproof underlayer (1) is formed on the upper surface of a frame (C) made of ALC by a mechanical fixing method, and a panel-like walking surface is further formed on the upper surface. The floor material (5) is constructed by being spread. Reference numeral (7) denotes a drain ditch, which is provided on the upper surface of the waterproof underlayer (1) near the plastic (P) provided on the side of the flat roof (F).

In this case, the heat insulating material (2) made of a foamed resin disposed at the bottom of the drain groove (7) installed on the upper surface of the frame (C) is the same as that of the above-mentioned known examples 1 or 2. A resin foam having a steep water gradient and substantially the same shape and substantially the same material as the foamed resin material can be used, and the surface thereof faces toward the plastic (P) or What is formed in a shape having a downward slope in both directions between the pet (P) and the downstream of the drain (7) is used.

The waterproof underlayer (1) comprises a foamed resin insulation material (2) on the upper surface of the frame (C) and a rigidity retaining plate (3) made of, for example, calcium silicate on the upper surface.
Are laminated, and a waterproof sheet (4) made of a soft synthetic resin is further placed thereon by a fixing tool (6a) via a fixing plate (6) and in accordance with an ordinary method of a mechanical fixing method.
′) And is fixed to the skeleton (C) and the parapet (P) by a fixture (6b).

As shown in FIGS. 1 and 2, the cross-sectional shape of the fixing plate (6 ') is parallel to the slope (n) of the heat insulating material (2a) having a steep water slope. For example, a resin steel plate bent at an inner angle (θ) along the inner surface of the parapet (P) is applied.

Next, a floor material support is provided inside the drain groove (7) of the waterproof base layer (1) formed by the heat insulating material (2a), the rigidity retaining plate (3) and the waterproof sheet (4). And a panel-like walking floor member (5a) is laid on the upper surface thereof so as to be level with at least the adjacent walking floor member (5b) so as to be leveled and supported. Then, the construction of the waterproof structure having the drain groove (7) is completed.

In the present invention, as shown in FIG. 1, the floor member supporting member (8) has a substantially L-shaped cross section, and is a walking floor member supported by its upper surface (m). (5a) is formed so as to be flush with the adjacent walking floor material (5b), and then installed in the drainage groove (7). As the material of the flooring supporting member (8), for example, a hard thermoplastic resin molded body that is extrusion-molded into a predetermined shape or bent from a plate is preferably used. Usually, a thickness of about 5 mm is applied, but it is possible to appropriately change the thickness in consideration of a walking load or the like.

Further, the floor material supporting member (8) is adjusted in accordance with the downward inclination of the drain groove (7) within a range not to impair the flatness of the walking floor material (5) laid on the upper part. Needless to say, the height can be adjusted. As the means for such adjustment, any means such as a change in the shape of the floor material supporting member (8) itself or the use of a height adjusting compensation plate (not shown) can be applied.

Next, the member (8) for supporting a flooring material of the present invention.
An embodiment according to a modification of the embodiment will be described below. 3 to 5 show a case where the cross-sectional shape is substantially L-shaped, and FIG. 6 shows a case where the cross-sectional shape of the floor material supporting member is a substantially prismatic shape.

First, FIG. 3 (a) is a cross section of a waterproof structure constructed using a floor material supporting member (8a) according to a first modified example, and shows a cross section of the floor material supporting member (8a). As shown in FIG. 3 (b), the shape is a short folded side (v) on the upper side of a steep water gradient slope toward the parapet (P).
And a substantially L-shaped elongated body having a long folded side (w) on the lower side. In this embodiment, the positioning on the upper and lower sides of the water slope is particularly clear. Further, if the material is selected from synthetic resin, the bonding with the waterproof layer (4) on the surface of the base layer (1) can be easily and reliably performed by, for example, an adhesion method, and the upper surface of the floor material supporting member (8a) can be bonded. Since the width can be made smaller than that of the floor material supporting member (8), the bulk is reduced.

FIG. 4 shows a second modification, which is a floor material supporting member (8b) which is exactly the same as the floor material supporting member (8a) except that the length is short. The length is at least enough to simultaneously support the corners (s) (s ′) of the adjacent walking floor materials (5) (5 ′), for example, the upper surface of the floor material supporting member (8b). The width is preferably about 2 to 3 times the width. This embodiment is the same as the first modification in that the surface of the underlayer (1) can be easily and reliably joined to the waterproof layer (4) as in the first modification, but in addition, the length is short. Because of this, the bulk is smaller, the portability and installation work are further facilitated, and the installation according to the length of the walking floor material (5) can be particularly easily performed.

FIG. 5 shows a third modification, in which the floor material supporting members (8), (8a) shown in FIGS. 1, 3 and 4 have a substantially L-shaped cross section. And (8b) the floor member supporting member (8c) similar to (8b), the upper surface (m) thereof.
Are provided with a plurality of water holes (h). In this embodiment, the water flowing on the back surface of the walking floor (5) has a role of flowing down into the drain (7).

FIG. 6A is a cross-sectional view of a waterproof structure constructed by using a floor member supporting member (8d) according to a fourth modification, wherein the floor member supporting member (8d) is shown. As shown in FIG. 4 (b), the cross-sectional shape is substantially prismatic, but strictly speaking, the angle (α) adjusted to the inclination of the bottom of the drain groove (7) to be installed. It is possible to increase the supporting contact surface of the walking flooring (5) so that the surface (m ') maintains flatness when installed in the drainage groove (7). desirable.

Also in the embodiment according to the fourth modification, similarly to the embodiment according to the first and second modifications, the floor material supporting member (8d) has a length in the direction of the drain groove (7). It is possible to arbitrarily determine whether the length is long or short. Further, the material of the floor material supporting member (8d) in this embodiment is most preferably a synthetic resin material, particularly a hard synthetic resin material, in applying the bonding method when it is installed in the drain groove (7). In addition, a metal material such as stainless steel, aluminum, rust-proof or plated iron, or a wooden material is also applicable.

FIG. 7 shows a fifth modification, in which at least one of the floor member supporting member (8a) of the first modification and the supporting member (8d) of the fourth modification. One end has a shape in which the cross section in the width direction is cut inward at an angle (β) of about 45 degrees downward and inward. FIG.
FIG. 7A shows the floor material supporting member (8a), and FIG. 7B shows the floor material supporting member (8d) in the shape. The floor material supporting member having such an end shape serves to improve the flow of drainage in the drainage groove (7).

According to the present invention, as described above, the target area for the installation of the drainage ditch is not only near the wall of the parapet (P) or the like, but also near the center of a flat land roof which is always subjected to a walking load. It is possible. An embodiment of a waterproof structure having a drainage groove in a flat roof with a flat portion which is always subjected to a walking load will be described below with reference to the drawings showing examples.

FIG. 8 is a sectional view showing a waterproof structure having a drainage groove near the center of a flat flat roof. (F ')
Is a flat roof of a concrete building, a waterproof base layer (1) is formed on the upper surface of an ALC frame (C) by a mechanical fixing method, and a panel-like walking floor material ( 5) is constructed by being laid.
(17) is a drainage ditch, and in the central part (A),
After the left and right heat insulators (2a) and (2a) are arranged with the lower ends of the steeply inclined surface (n) abutting each other, a rigid holding plate (3) is further provided on the upper surface thereof, and further a mechanical fixing method. The waterproof sheet (4) is sequentially laminated via the fixing plate (16) according to the conventional method, and is fixed to the upper surface of the frame (C) to form a drain groove (17).

Next, the two floor material supporting members (8a) and (8a) of the first modified example are back-to-back on the inner surface of the drain groove (17) so that the cross-section becomes inverted palm-shape. The pedestrian flooring (5) is placed on the upper surface, and the pedestrian flooring (5) and the adjacent pedestrian flooring (5) are flush with each other. The construction of the waterproof structure having the drain groove (17) is completed.

In this case, the floor material supporting members (8), (8b), (8) are not limited to the floor material supporting members (8a).
c) may be installed back to back in the same state as shown in FIG.

Further, the member for supporting a flooring material of this embodiment comprises:
As shown in FIGS. 9A to 9C, the cross section is
In the fifth modified example, a substantially one-character flooring supporting member (8
e) In the sixth modification, a substantially T-shaped flooring supporting member (8)
f) In the seventh modified example, like a floor member supporting member (8g) having a substantially square shape, the member is integrally formed in a symmetrical shape that crosses the central portion (A) of the drain groove (17). It may be something. Then, the walking floor material (5) supported by the upper surface (m) (m ′) is adjacent to the walking floor material (5).
It is installed in the drain groove (17) so as to be flush with (5) and supported horizontally. The shape, material, molding method, etc., of the flooring supporting member in this embodiment are as follows:
It is needless to say that, similarly to the floor material supporting members (8) to (8d), it can be appropriately changed in consideration of a walking load or the like.

[0036]

FIG. 3 shows a waterproof structure having a target drainage groove.
The waterproof structure by the mechanical fixing method shown in (a) was adopted. The floor member supporting member (8a) of the first modified example having the shape shown in FIG. 3B was applied as the floor member supporting member.
The downward slope of the drainage ditch (7) is 10 degrees at the deepest part.
It was 6/00.

The floor member supporting member (8a) has a length of 1 m, a thickness (r1) of 4.0 mm, and an upper surface (m ') width (r2).
50 mm, and the folding side (v) width (r3) is 14 at the upstream end.
mm, 18 mm at the downstream end, and the folded side (w) width (r
4) is set at 18 mm at the upstream end, 21 mm at the upstream end, and 27 mm at the downstream end, extruding a hard vinyl chloride resin and cutting it from a long body to a length of 1 m. Corrected to shape.

The floor member supporting member (8
a) The floor material supporting members installed adjacent to the upstream and downstream sides include a walking floor material laid on the upper surface thereof and a walking floor material (5) laid on the upper surface of the floor material supporting member (8a). ) Were formed by setting the height dimension according to the shape of the drain groove (7) by the same procedure as described above so that they were flush with each other and supported horizontally.

Further, as shown in FIG. 7 (a), both ends of the floor material supporting member (8a) are cut so that the cross section in the width direction is downwardly inward at an angle (β) of 45 degrees. did.

Next, the floor material supporting member (8a) obtained as described above, together with the adjacently installed floor material supporting member, is placed along the drain groove (7) as shown in FIG. And a panel-like walking floor material (5) was laid thereon to complete construction of a waterproof structure having a drainage ditch. In the construction work, the construction member can be more easily produced than in the case where the conventional gutter-like member is installed, and the construction work is easy.

In the obtained waterproof structure, the walking floor material (5) laid on the upper part of the drainage groove (7) is surely flush with the other walking floor material adjacent thereto and is supported. It was done. Moreover, the laid walking floor material (5) was laid reliably without moving unnecessarily even when walking on it.

[0042]

As described above, the waterproof structure having the drainage groove according to the present invention has a structure in which a part of the underlayer is steeply inclined in order to drain water from a flat portion such as a flat roof on which a walking floor material is laid. In a waterproof structure having a drain groove formed by forming a water gradient slope, a floor member supporting member is installed inside the drain groove, and a walk is laid by the floor member supporting member above the drain groove. Since the floor material for flooring is horizontally compensated and supported so as to be flush with other walking floor materials adjacent to the walking floor material, any structure in the waterproof structure in which the walking floor material is laid is used. The drainage ditch can be easily formed using the waterproof base layer on the walking floor, and the flooring support member installed on the inner surface of the drainage ditch can be used to lay the drainage ditch on the upper surface of the drainage ditch. Make sure the flooring is flush with the adjacent walking flooring Flat shape to be able to compensate support,
There is an effect that the flatness of the entire floor surface of the walking floor material can be ensured with high precision, and a waterproof structure having a drainage groove with improved walking safety of the walking floor material can be constructed.

In particular, in the present invention, it is not necessary to use a specific member having a complicated shape such as a gutter-like member for the drainage as in the prior art, and it is not necessary to perform complicated and highly accurate construction work for connection. Therefore, there is a great advantage that the construction work can be performed very efficiently, the construction of the waterproof structure having the drainage groove can be made extremely easy, and the cost can be reduced.

Further, since the floor material supporting member according to the present invention can be made of a synthetic resin, when the waterproof sheet on the inner surface of the drain is made of a synthetic resin, it is easily fixed and installed by the bonding method. This makes it possible to perform the construction work extremely easily.

Further, in the present invention, the cross-sectional shape of the member for supporting a floor material is substantially L-shaped as in the member for supporting a floor material according to the second and third aspects, or the member for supporting the floor material according to the fifth aspect is provided. The shape of the cross section can be made into a substantially prismatic shape like a member for use, but any shape is extremely simple, not only is it easy to manufacture, but also it is easy to fix and install it in a drain. There is an advantage. In addition, since the length of the molded body can be freely selected to be long or short, there is also an advantage that production suitable for the site is easy.

Further, as in the floor member supporting member according to claim 4, a plurality of water holes are provided on the upper surface of the floor member supporting member having a substantially L-shaped cross section. Water that flows down the back of the walking flooring,
There is an effect that the water can be quickly flowed down into the drain.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a typical embodiment of a waterproof structure having a drain groove according to the present invention.

FIG. 2 is a partial perspective view showing an arrangement state of a fixing plate shown in FIG.

3A and 3B are diagrams showing a first modification of the floor material supporting member according to the present invention. FIG. 3A shows an arrangement state of the floor material supporting member, and FIG. It is a partial perspective view of the member for use.

FIG. 4 is a partial perspective view showing a second modification of the floor member supporting member of the present invention.

FIG. 5 is a partial perspective view showing a third modified example of the floor material supporting member.

FIG. 6 is a view showing a fourth modification of the floor material supporting member according to the present invention, wherein FIG. 6A shows the arrangement of the floor material supporting member, and FIG. It is a partial perspective view of the member for use.

FIG. 7 is a view showing a fifth modification of the flooring support member. FIG. 7A shows a modification of the flooring support member shown in FIG. 3B, and FIG. It is each partial perspective view which shows the modification of the member for supporting floor materials shown in FIG. 6 (b).

FIG. 8 is a cross-sectional view showing another embodiment of the waterproof structure having a drain groove of the present invention.

9 is a view showing an arrangement state of a modified example of the floor member supporting member shown in FIG. 8, in which FIG. 8A shows a sixth modified example, and FIG. 8B shows a seventh modified example. FIG. 8C is a cross-sectional view showing an eighth modified example and showing respective arrangement states.

FIG. 10 is a cross-sectional view for explaining a conventional example of a waterproof structure having a drain groove. FIG. 10A is a cross-sectional view of the waterproof structure having a drain groove, and FIG. It is a partial perspective view which shows the form of the gutter-shaped member shown.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Waterproof base layer 2, 2a ... Heat insulation material 3 ... Rigid holding plate 4 ... Waterproof sheet 5 ... Walking floor material 6, 6 ', 16 ... Fixed plate 7, 17 ... Drainage groove 8, 8a-g ... Floor material Supporting members A: Central part C: Frame F, F ': Flat roof P: Parapet

Claims (5)

[Claims] 1. A waterproof structure having a drainage groove formed by forming a part of an underlayer into a steep water slope in order to drain water from a flat portion such as a flat roof on which a floor material for walking is laid. In the above, a floor material supporting member is installed inside the drainage groove, and a walking floor material laid on the upper part of the drainage groove by the floor material supporting member is used for another walking adjacent to the walking floor material. A waterproof structure having a drainage groove, which is horizontally supported so as to be flush with a floor material. 2. The waterproof structure having a drain groove according to claim 1, wherein the floor material supporting member has a substantially L-shaped cross section and is formed of an elongated body. 3. The floor material supporting member has a substantially L-shaped cross section and is formed of a short body, and the length of the floor material supporting member is at least the corner of the adjacent floor material. The waterproof structure having a drainage groove according to claim 2, which has a length sufficient to support at the same time. 4. The waterproof structure having a drain groove according to claim 1, wherein a plurality of water holes are provided on an upper surface of the floor member supporting member. 5. The waterproof structure having a drainage groove according to claim 1, wherein the cross section of the floor material supporting member has a substantially prismatic shape.