JP6008586B2 - Drainage structure built on slab - Google Patents

Description

  The present invention relates to a drainage groove structure that is constructed on a slab that constitutes a rooftop of a building, a floor of a basement, and the like, and a formwork fixing member that supports a driving formwork material used in the construction of the drainage groove structure. Is.

  Conventionally, in a drainage structure constructed on a slab constituting a rooftop of a building, a floor of a basement, etc., as shown in FIG. 7, a predetermined on a waterproof layer 2 provided on the slab 1 Although not shown in the figure, two concrete panels and other molds are placed facing each other with an interval corresponding to the groove width, and protective concrete 4 is placed outside the two molds to protect the concrete. When 4 is solidified, the formwork is dismantled to form a groove forming portion 3, and a drain mortar structure A is constructed by placing a finishing mortar 5 on the bottom of the groove forming portion 3 (for example, a patent) Reference 1).

Japanese Patent Laid-Open No. 10-317610

The drainage groove structure A having the above-described structure is obtained by repeating expansion and contraction of the protective concrete 4 and the bottom finish mortar 5 that form the wall of the drainage groove structure A over time. As a result, the interface was peeled off, a gap S was formed between the protective concrete 4 and the finished mortar 5, and the finished mortar 5 was also cracked.
In such a state, as shown in FIG. 7, rainwater enters the gap S at the interface between the protective concrete 4 and the finished mortar 5 or cracks in the finished mortar 5 and enters the interface between the finished mortar 5 and the waterproof layer 2. As a result, the lifting phenomenon of the finishing mortar 5 due to the wrapping around and lifting the finishing mortar 5 was observed, which caused a problem of deteriorating the aesthetic appearance. In addition, there is a problem that dust, earth and sand accumulate in the gaps S and cracks and plants grow. And since the thickness of the finishing mortar 5 is generally thin, when the roots of the plant that has grown in the gap S or cracks extend, the roots may penetrate the waterproof layer 2 beyond the finishing mortar 5, There was a problem that led to a water leakage accident.

Such a problem is caused by the rising of the finished mortar 5 due to the rainwater entering the gap S at the interface between the protective concrete 4 and the finished mortar 5 or cracks in the finished mortar 5 due to penetration. It can be solved by preventing it.
As a result of research, the inventor has found that the finishing mortar from the bottom of the drainage groove structure can be prevented from being lifted, and has completed the present invention.

  An object of the present invention is to provide a drainage groove structure constructed on a slab that can easily and reliably prevent the finishing mortar from floating at the bottom of the drainage groove structure.

In order to achieve the above object, according to the first aspect of the present invention, protective concrete is placed on a waterproof layer provided on a slab so that a groove forming portion is formed at a predetermined location. A drainage groove structure constructed by placing finish mortar or concrete on the bottom of the groove forming portion, wherein the groove forming portion formed on the waterproof layer is integrated with the protective concrete. A driving mold frame material is formed to form both side walls of the groove forming portion and prevent the protective concrete from entering the groove forming portion, and the driving mold frame material is supported below the driving mold frame material. A support portion, an anchor-forming convex portion formed by folding from the support portion to the protective concrete side and folding back to the groove forming portion side with a predetermined space, and the folded piece formed The finish mortar or concrete placed in the bottom of the groove forming portion formed by the placement mold material and the mold fixing member, wherein a mold fixing member having a bottom plate portion fixed to the water layer is disposed Is characterized in that it enters the internal space of the anchor forming convex part of the mold fixing member and bites into the protective concrete.

According to the drainage groove structure constructed on the slab according to claim 1 , in the groove forming part formed on the waterproof layer, both side walls of the groove forming part are integrated with the protective concrete. A driving mold frame material that is formed and prevents the protective concrete from entering the groove forming portion is disposed, and a support portion that supports the driving mold frame material is provided below the driving mold frame material, and a support portion. An anchor-forming convex part formed by folding from the protective concrete side to the groove-forming part side with a predetermined space and a bottom plate part fixed to the waterproof layer formed by the folded piece Since the formwork fixing member is arranged, the finished mortar or concrete placed at the bottom of the groove forming part enters the interior space of the anchor forming convex part and forms the protective concrete. The elaborate have drainage ditch structure can be easily formed.
Further, the finished mortar or concrete placed at the bottom of the groove forming portion formed by the driving mold material and the mold fixing member enters the internal space of the anchor forming convex portion of the mold fixing member. Since it bites into the protective concrete, the bite portion of the finish mortar or concrete that bites into the protective concrete serves as an anchor, and the gap formed between the casting mold material and the mold fixing member and the finished mortar or concrete. Even if rainwater permeates through and enters the interface between the finished mortar or concrete and the waterproof layer, it is possible to prevent the finished mortar or concrete from being lifted.
In addition, even when dust, earth or sand accumulates in the gap between the driving formwork material or formwork fixing member and the finished mortar or concrete, and the plant grows, the finished mortar or concrete is an anchor of the formwork fixing member. The gap between the mold fixing member and the finished mortar or concrete is increased due to the presence of the biting part that enters the forming convex part and bites into the protective concrete, so even if the root of the plant is elongated, the elongated root is Reaching the waterproof layer can be prevented, and a water leakage accident due to the root of the plant penetrating the waterproof layer can be prevented.

It is sectional drawing which shows the 1st example of embodiment of the drainage groove structure constructed | assembled on the slab which concerns on this invention. It is explanatory drawing which shows an example which builds the drain groove structure shown in FIG. It is sectional drawing which shows the 2nd example of embodiment of the drainage groove structure constructed | assembled on the slab which concerns on this invention. It is a perspective view showing an example of an embodiment of a formwork fixing member concerning the present invention. FIG. 5 is a cross-sectional view illustrating a state in which a driving mold material is supported on the mold fixing member illustrated in FIG. 4. FIG. 5 is a partially enlarged cross-sectional view of the driving form material shown in FIG. 4. It is sectional drawing which shows the drainage groove structure constructed | assembled on the conventional slab.

Hereinafter, embodiments of a drainage groove structure constructed on a slab according to the present invention and a mold fixing member used for construction of the drainage groove structure will be described in detail with reference to the examples shown in the drawings.
First, the first example of the embodiment of the drainage groove structure constructed on the slab will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view of the drainage groove structure constructed on the slab of this example, FIG. 2 is an explanatory view showing an example of constructing the drainage groove structure shown in FIG.

  As shown in FIG. 1, the drainage groove structure A of this example has protective concrete 4 formed on a waterproof layer 2 provided on a slab 1 so that a groove forming portion 3 is formed at a predetermined location. The finished mortar or concrete 5 is cast on the bottom of the groove forming portion 3 and constructed. Then, the finished mortar or concrete 5 placed at the bottom of the groove forming portion 3 bites into the protective concrete 4 on both sides.

  In the amount of biting into the finished mortar or concrete 5, the length of the interface between the protective concrete 4 and the finished mortar or concrete 5 toward the waterproof layer 2 is accumulated in the gap between the protective concrete 4 and the finished mortar or concrete 5. Even when the roots of plants grown on the earth and sand are elongated, the amount is preferably such that the elongated roots do not reach the waterproof layer.

  In the construction of such a drainage groove structure A, for example, as shown in FIG. 2, a mold 6 such as a concrete panel having a projecting portion 6a projecting along the longitudinal direction at the lower end is prepared. The two mold frames 6 are arranged opposite to each other on the waterproof layer 2 provided on the slab 1 so that the protruding portions 6a face outward, and the protective concrete 4 is applied to the outer sides of the two mold frames 6. When the protective concrete 4 is solidified, the mold 6 is disassembled and removed to form the groove forming portion 3. The protective concrete 4 that forms both walls of the formed groove forming portion 3 has a recess 4 a formed by the protruding portion 6 a of the mold 6. By draining the finished mortar or concrete 5 into the recess 4a of the protective concrete 4 by placing the finished mortar or concrete 5 on the bottom of the groove forming part 3, the finished mortar or concrete 5 has penetrated into the protective concrete 4 A groove structure A is constructed.

According to the drainage groove structure A of this example configured as described above, the finished mortar or concrete 5 placed at the bottom of the groove forming portion 3 bites into the protective concrete 4 on both sides. The biting portion 5a that bites into the protective concrete 4 of 5 becomes an anchor, and rainwater enters from the gap between the protective concrete 4 and the finished mortar or concrete 5 and wraps around the interface between the finished mortar or concrete 5 and the waterproof layer 2 However, it prevents the finished mortar or concrete 5 from floating.
In addition, even if dust or earth and sand accumulates in the gap between the protective concrete and the finished mortar or concrete, and the plant grows, the presence of the portion that bites into the finished concrete or the protected concrete causes the protective concrete and the finished mortar to finish. Since the gap between the mortar and concrete becomes long, even if the roots of the plant grow, it can prevent the stretched roots from reaching the waterproof layer, and prevent water leakage accidents due to the plant roots penetrating the waterproof layer. Can do.

Next, a second example of the embodiment of the drainage groove structure constructed on the slab will be described with reference to FIG. 3, and the formwork fixing member used for the construction of the drainage groove structure will be described with reference to FIGS. 4 to 6. An example of the embodiment will be described.
3 is a sectional view of a drainage groove structure constructed on the slab of the second example, FIG. 4 is a perspective view showing an example of an embodiment of a mold fixing member, and FIG. 5 is a mold fixing shown in FIG. FIG. 6 is a partially enlarged cross-sectional view of the driving mold material shown in FIG. 4.

  As shown in FIG. 3, the drainage groove structure A of this example has protective concrete 4 formed on the waterproof layer 2 provided on the slab 1 so that the groove forming portion 3 is formed at a predetermined location. The finished mortar or concrete 5 is cast on the bottom of the groove forming portion 3 and constructed.

  In the groove forming part 3 formed on the waterproof layer 2, driving is performed integrally with the protective concrete 4 to form both side walls of the groove forming part 3 and prevent the protective concrete 4 from entering the groove forming part 3. Formwork materials 7 are respectively arranged. Examples of the material of the driving mold material 7 include a resin foam, a ceramic panel, and a resin plate. Further, a biting groove 8 into which the protective concrete 4 bites is formed on the surface of the casting mold material 7 that contacts the protective concrete 4.

At the lower part of the casting mold frame material 7, a support part 9 for supporting the casting mold frame material 7, and bent from the support part 9 to the protective concrete 4 side to form a predetermined space and folded back to the groove forming part 3 side. The formwork shown in FIG. 4 has the anchor forming convex portion 10 formed, the bottom plate portion 11 fixed to the waterproof layer 2 formed by the folded piece, and the rising portion 12 that bites into the finished mortar or concrete 5 at the tip of the bottom plate portion 11. A fixing member 13 is arranged.
Finished mortar or concrete 5 placed at the bottom of the groove forming portion 3 formed by the casting mold material 7 and the mold fixing member 13 enters the internal space 10 a of the anchor forming convex portion 10 of the mold fixing member 13. Biting into protective concrete 5.

Next, the formwork fixing member 13 used in the drainage groove structure A of this example will be described in detail.
The mold fixing member 13 of this example is for fixing the driving mold member 7 on the waterproof layer 2 and is made of a plate material. The supporting member 9 is a cross-sectional shape and supports the driving mold member 7 on the upper side. The support portion 9 is composed of two opposing support pieces 9a and 9b, and the driving mold frame material 7 is inserted and supported between the support pieces 9a and 9b. And it bends from the support part 9 to the protective concrete 4 side, leaves a predetermined space and is folded back to the groove forming part 3 side to form the anchor forming convex part 10, and the folded piece is bonded and fixed to the waterproof layer 2. A bottom plate portion 11 is formed, and a rising portion 12 that bites into the finished mortar or concrete 5 is formed at the tip of the bottom plate portion 11.

The shape of the anchor forming convex portion 10 is not particularly limited, but the finished mortar or concrete 5 is applied to the bottom of the groove forming portion 3 formed by the driving mold material 7 and the mold fixing member 13. It is preferable that the finished mortar or the concrete 5 has a shape in which the anchor forming convex portion 10 of the formwork fixing member 13 can easily enter and no air pockets are generated when it is provided.
Moreover, in the amount of protrusion of the anchor forming convex portion 10 toward the protective concrete 4, the length of the interface between the driven mold material 7 and the mold fixing member 13 facing the waterproof layer 2 and the finished mortar or concrete 5 is Even when the roots of plants grown on the earth and sand accumulated in the gap between the placement mold material 7 or the mold fixing member 13 and the finished mortar or concrete 5 are elongated, the length that the extended roots do not reach the waterproof layer It is preferable that

  The thus configured mold fixing member 13 is driven in the same manner as the driving mold member 7, and in that material, supports the driving mold member 7 and is fixed on the waterproof layer 2. Although it will not specifically limit if the intensity | strength which can be obtained is obtained, In this example, hard vinyl chloride is used and it manufactures by extrusion molding.

  In the construction of such a drainage groove structure A, first, the mold fixing member 13 is placed on the waterproof layer 2 provided on the slab 1 so that the anchor forming convex portion 10 faces outward. The bottom plate 11 is bonded and fixed to the waterproof layer 2 with an adhesive. Then, the mold frame material 7 is inserted into and supported by the support portion 9 of the mold fixing member 13 fixed to the waterproof layer 2 so that the biting groove 8 faces outward.

  In this way, when the driving mold member 7 is fixed to the waterproof layer 2 via the mold fixing member 13, the protective concrete 4 is placed on the outside of the driving mold member 7 supported by the mold fixing member 13. The groove forming part 3 is formed, and finishing mortar or concrete 5 is placed on the bottom of the groove forming part 3. The finishing mortar or concrete 5 may be placed on the bottom of the groove forming portion 3 simultaneously with the placement of the protective concrete 4 or after the protective concrete 4 has been placed. The finished mortar or concrete 5 placed on the bottom of the groove forming portion 3 enters the internal space 10a of the anchor forming convex portion 10 of the mold fixing member 13 and the finished mortar or concrete 5 bites into the protective concrete 4 Body A is constructed.

  In the drainage groove structure A constructed in this way, the finished mortar or concrete 5 enters the internal space 10a of the anchor forming convex portion 10 of the formwork fixing member 13 and bites into the protective concrete 4, so that it bites into the protective concrete 4. The bite portion 5a serves as an anchor, and rainwater enters from a gap formed between the casting mold member 7 and the mold fixing member 13 and the finished mortar or concrete 5, and enters the interface between the finished mortar or concrete 5 and the waterproof layer 2. Even if it goes around, the floating phenomenon of the finished mortar or concrete 5 can be prevented.

  Moreover, even if dust, earth and sand, etc. accumulate in the gaps between the casting mold material 7 or the mold fixing member 13 and the finished mortar or concrete 5 and the plant grows, the finished mortar or concrete 5 remains the mold fixing member. Since the gap between the mold fixing member 13 and the finished mortar or the concrete 5 becomes longer due to the presence of the biting portion 5a that enters the internal space 10a of the anchor forming convex portion 13 and bites into the protective concrete, the roots of the plant extend. Even in this case, it is possible to prevent the extended roots from reaching the waterproof layer 2, and it is possible to prevent a water leakage accident due to the plant roots penetrating the waterproof layer.

  In this example, since the rising part 12 which bites into the finishing mortar or the concrete 5 is formed at the tip of the bottom plate part 11 of the mold fixing member 13, the mold fixing member 13 and the finishing mortar in the constructed drainage groove structure are formed. Alternatively, the gap with the concrete 5 is further increased, and the roots of the plant can be prevented from extending to reach the waterproof layer 2, thereby preventing the water leakage accident more effectively.

  Moreover, in this example, since the biting groove 8 into which the protective concrete 4 bites is formed on the surface of the driving mold material 7 that contacts the protective concrete 4, peeling between the driving mold material 7 and the protective concrete 4 is prevented. Unity can be maintained.

A drainage groove structure 1 slab 2 waterproof layer 3 groove forming part 4 protective concrete 4a recessed part 5 finished mortar or concrete 5a biting part 6 mold frame 6a projecting part 7 driving type frame material 8 biting groove 9 support part 9a, 9b support piece 10 Anchor forming convex part 10a Internal space 11 Bottom plate part 12 Standing part 13 Formwork fixing member

Claims (1)

Protective concrete is cast on the waterproof layer provided on the slab so that a groove forming part is formed at a predetermined location, and finished mortar or concrete is cast on the bottom of the groove forming part. A drainage groove structure,
  In the groove forming portion formed on the waterproof layer, a driving form that forms both side walls of the groove forming portion integrally with the protective concrete and prevents the protective concrete from entering the groove forming portion. Each of the materials is arranged, and at the lower part of the driving mold frame material, a support part for supporting the driving mold frame material, and a bent space from the support part to the protective concrete side to leave a predetermined space, the groove forming part side A mold fixing member having an anchor forming convex portion formed by folding back and a bottom plate portion fixed to the waterproof layer formed by the folded piece is disposed,
  The finished mortar or concrete placed at the bottom of the groove forming portion formed by the driving mold material and the mold fixing member enters the internal space of the anchor forming convex portion of the mold fixing member and forms the protective concrete. Drainage structure built on a slab characterized by biting.

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