JP2015154619A - Water stopping structure and water stopping construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water stopping structure that prevents water leakage from a space between a floor through which a cable tray vertically extended is penetrated and the cable tray to a floor below.SOLUTION: On a floor 7 in a water stopping structure 1 that prevents water leakage from a space between the floor 7 through which a cable tray 5, which stores a cable therein and is vertically extended, is penetrated and the cable tray 5 to a floor below, a curve 9 is arranged around the cable tray 5 separately from the cable tray 5; a first board 17 is arranged above the curve 9 so as to cover the periphery of the cable tray 5 separately from the curve 9; a first sheet metal 19 is arranged so as to cover the periphery of the first board 17; a back up material 21 is arranged between a lower end of the first board 17 and the curve 9; a polyurea 23 is sprayed to cover the first sheet metal 19, the backup material 21, the curve 9 and the floor 7; and a second board 25 is arranged to cover the polyurea 23 and a second sheet metal 27 is arranged.

Description

  The present invention relates to a water stop structure and a water stop construction method for preventing water leakage to a lower floor from between a floor through which a cable tray extending in a vertical direction passes and a cable tray.

  Conventionally, even when a water leakage accident occurs in the pipe shaft from the equipment piping, the water penetration device for the floor penetration part of the electric cable in the pipe shaft that can prevent water leakage to the lower floor has been proposed (patent) Reference 1).

  In this patent document 1, a steel pipe sleeve is installed by placing a floor slab concrete in a place that becomes a floor penetration portion of an electric cable in a pipe shaft, and the length of the steel pipe sleeve is made larger than the thickness of the floor slab, An electric cable floor penetration water stop device is disclosed for a pipe shaft that is installed with its upper end protruding upward from the floor slab surface.

JP-A-9-215155

  However, in the electrical cable floor penetration water stop device disclosed in Patent Document 1, when water leaks from the piping equipment arranged in the pipe shaft, water leaks to the electrical board on the lower floor through the electrical cable floor slab penetration. The purpose is to prevent a power supply ground short circuit accident.

  For this reason, water immersion from the outside of the pipe shaft into the pipe shaft is basically not considered. Therefore, when water enters the pipe shaft from the outside of the pipe shaft, there is a risk of water leaking to the lower floor through the floor slab penetrating portion of the piping facility. That is, in the electric cable floor penetration water stop device of Patent Document 1, there is a problem that water leakage prevention to the lower floor in such a situation is not considered.

  Then, this invention provides the water stop structure and water stop construction method which prevent the water leak to the lower floor from between the floor and the cable tray which the cable tray extended in the vertical direction has penetrated. Objective.

In order to solve the above-described problem, the invention according to claim 1
In the water stop structure that prevents the leakage of water from the floor between the cable tray and the floor through which the cable tray that stores the cable inside and extends in the vertical direction passes,
In order to prevent water from entering between the floor and the cable tray, the spray resin having water-stopping property in an elevational view extends upward from the floor surface and is arranged around the cable tray.

  According to the invention relating to the water stop structure according to claim 1, for example, as shown in FIGS. 2 and 11, the spray resin having water stop in the elevation view extends upward from the floor surface to surround the cable tray. Therefore, it is possible to prevent water from entering between the floor through which the cable tray extending in the vertical direction passes and the cable tray, and to prevent water leakage to the lower floor. Further, even when there are obstacles on the floor surface or the surroundings, since the spray material is used, the degree of freedom of the shape is high, and the shape can be made according to the application location, so that the construction efficiency is improved.

In order to solve the above-mentioned problem, the invention according to claim 2 according to claim 2, for example, as shown in FIGS.
In the water stop structure that prevents the leakage of water from the floor between the cable tray and the floor through which the cable tray that stores the cable inside and extends in the vertical direction passes,
A curve is arranged around the cable tray on the floor so as to be separated from the cable tray, and a first board is arranged above the curve so as to cover the cable tray so as to be separated from the curve. The first sheet metal is disposed so as to cover the periphery of the sheet, the backup material is disposed between the lower end of the first board and the curve, and the polyurea is disposed so as to cover the first sheet metal, the backup material, the curve, and the floor. The second board for protecting the polyurea is disposed so as to cover the polyurea, and the second sheet metal is disposed so as to cover the polyurea and the second board.

According to the invention relating to the water-stop structure according to claim 2, the polyurea, which is a resin having a water-stopping property so as to cover the first sheet metal, the backup material, the curve, and the floor disposed around the cable tray, The second board that is sprayed and protects the polyurea is disposed so as to cover the polyurea, and the second sheet metal is disposed so as to cover the polyurea and the second board, so that the cable is extended in the vertical direction. Infiltration between the floor through which the tray passes and the cable tray can be prevented, and water leakage to the lower floor can be prevented. In addition, even when there are obstacles on the floor or surroundings, because polyurea is used as a spraying material, the degree of freedom of shape is high, and the shape can be made to match the application location, and the efficiency of construction is high. Become.
Furthermore, since polyurea is excellent in stretchability, it has an advantage of high followability to displacement due to shaking and the like and hardly damaged.
In addition, polyurea is covered with non-combustible materials such as rock wool and fireproof board, so it is excellent in terms of heat resistance and fire resistance.

  In the invention according to claim 3, for example, as shown in FIGS. 1 to 11, a plurality of cable trays are arranged separately in the horizontal direction so as to cover the plurality of cable trays in a columnar shape. Further, the first board, the first sheet metal, the backup material, the polyurea, the second board, and the second sheet metal are arranged.

  According to the invention relating to the water stop structure according to claim 3, the first board, the first sheet metal, the backup material, and the polyurea so as to cover the plurality of cable trays spaced apart in the horizontal direction in a columnar shape. Since the second board and the second sheet metal are arranged, water leakage from between the cable trays to the lower floor can be prevented.

  The invention relating to the water stop structure according to claim 4 is characterized in that the second sheet metal is composed of one sheet metal.

  According to the invention relating to the water stop structure according to the fourth aspect, since the second sheet metal is composed of one sheet metal, the joining process can be reduced.

As shown in FIGS. 3 to 11, for example, the invention related to the water stop construction method according to claim 5 is as follows.
In the water stop construction method that prevents leakage of water from the floor between the cable tray and the floor through which the cable tray that extends in the vertical direction and stores the cable,
Place the first board above the curve so as to cover the circumference of the cable tray spaced apart from the cable tray on the floor and away from the curve placed around the cable tray;
Arrange the first sheet metal so as to cover the periphery of the first board,
Place backup material between the lower edge of the first board and the curve,
Spray polyurea over the first sheet metal, backup material, curve and floor,
The second board is disposed so as to cover the polyurea, and the second sheet metal is disposed on the floor so as to cover the second board.

  According to the water stop construction method according to the fifth aspect of the present invention, a curve is provided so as to cover the periphery of the cable tray while being spaced apart from the curve disposed on the floor and spaced from the cable tray. The first board is disposed above the first board, the first sheet metal is disposed so as to cover the periphery of the first board, the backup material is disposed between the lower end of the first board and the curve, Polyurea is sprayed to cover the sheet metal, back-up material, curve, and floor, the second board is placed to cover the polyurea, and the second sheet metal is placed on the floor, so that polyurea can be sprayed easily Further, a strong waterproof structure with a plurality of layers can be provided to prevent water from entering between the cable tray and the floor through which the cable tray extending in the vertical direction passes.

  According to the present invention, it is possible to provide a water stop structure and a water stop construction method for preventing water leakage to a lower floor from between a floor through which a cable tray extending in a vertical direction passes and a cable tray. it can.

It is a perspective view which shows an example of the water stop structure which concerns on this invention. It is II sectional drawing of FIG. It is a perspective view which shows an example in which the cable tray extended in the vertical direction has penetrated the floor. It is a perspective view showing an example in which a plurality of long materials having an L-shaped cross section according to the present invention are attached so as to sandwich a cable tray. It is a perspective view showing an example in which a plurality of long materials having an L-shaped cross section according to the present invention are attached so as to sandwich a cable tray. It is a perspective view which shows an example which attaches the several board which concerns on this invention, and several 1st sheet metal so that a cable tray may be enclosed. It is a perspective view which shows an example which inserts the backup material which concerns on this invention between a board and a curve. It is a perspective view which shows an example which inserted the backup material which concerns on this invention between the board and the curve. It is a perspective view which shows an example which sprays the polyurea which concerns on this invention to a 1st sheet metal, a backup material, a curve, and a floor. It is a perspective view which shows an example which sprayed the polyurea which concerns on this invention on the 1st sheet metal, a backup material, a curve, a floor | bed, etc. FIG. It is a perspective view which shows an example which attaches the 2nd sheet metal which concerns on this invention so that polyurea may be covered.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.

<Embodiment>
1 and 2 show an embodiment of a water stop structure according to the present invention. The water stop structure 1 according to the present invention is provided around the cable tray 5 on the floor 7 through which the cable tray 5 that extends in the vertical direction and houses a plurality of power cables 3 is passed. . And the water stop structure 1 prevents the water leak from between the floor 7 and the cable tray 5 to a lower floor.

  As shown in FIGS. 2 and 3, a curve 9 is disposed around the cable tray 5 on the floor 7 so as to be separated from the cable tray 5. In addition, as shown in FIG. 2, a long material 13 having an L-shaped cross section closes between the curve 9 and the cable tray 5 so as to connect the curve 9 and the cable tray 5 to each of the curve 9 and the cable tray 5. It is placed in surface contact. Further, as shown in FIG. 3, the cable tray 5 has a U-shaped cross section, and a plurality of power supply cables 3 are housed inside the U-shaped opening, and a plurality of horizontal plate members 15 arranged in the vertical direction. The power cable 3 is held down. The openings of the plurality of cable trays 5 face each other and are spaced apart in the horizontal direction.

  As shown in FIGS. 2 to 11, the water stop structure 1 includes a plurality of first boards above the curve 9 so as to cover the periphery of the plurality of cable trays 5 separated from the curve 9 in a single column shape. 17 is arranged, a plurality of first sheet metals 19 are arranged so as to cover the periphery of the plurality of first boards 17, and a backup material 21 is provided between the lower ends of the plurality of first boards 17 and the curve 9. A polyurea 23 is sprayed so as to cover the first sheet metal 19, the backup material 21, the curve 9, and the floor 7. The second sheet metal 27 is disposed on the floor 7 so as to cover the polyurea 23 and the second board. A fireproof board having a height of 1200 mm is used for the plurality of first boards 17.

  As shown in FIGS. 1 and 2, the second sheet metal 27 is disposed on the polyurea 23 whose lower part is sprayed on the floor 7. The polyurea 23 is an inexpensive material excellent in heat insulation and waterproofness, and the polyurea 23 is sprayed by mixing two kinds of solvents. Since the polyurea 23 has a fast curing speed and dries and cures in a very short time, the joint is seamless and thick coating is possible without dripping.

  As shown in FIGS. 1 and 11, the second sheet metal 27 has a columnar shape at the top and a divergent shape so that the bottom does not interfere with the curve 9. The lower end portion of the second metal plate 27 has a width and is in contact with the polyurea 23.

  Next, with reference to FIGS. 1-11, the water stop construction method concerning this invention is demonstrated.

  3-11 shows embodiment of the water stop construction method based on this invention. The water stop construction method according to the present invention is performed around the cable tray 5 on the floor 7 through which the cable tray 5 extending in the vertical direction and containing the power cable 3 is passed. And by this water stop construction method, the polyurea 23 can be easily sprayed, and a durable waterproof structure with a plurality of layers can be provided to prevent water leakage from between the floor 7 and the cable tray 5 to the lower floor. .

  As shown in FIG. 3, a curve 9 is arranged on the floor 7 so as to be separated from the cable tray 5 and around the cable tray 5.

  First, as shown in FIGS. 4 and 5, a plurality of long members 13 having an L-shaped cross section are arranged so that each cable tray 5 is sandwiched in the horizontal direction, and bolts and nuts are attached to the curve 9 and the cable tray 5. Fix it. As shown in FIG. 2, the long material 13 having an L-shaped cross section disposed outside the cable tray 5 is in surface contact with each of the curve 9 and the cable tray 5 so as to connect the curve 9 and the cable tray 5. Then placed. The cable tray 5 has a U-shaped cross section, and a plurality of power cables 3 are accommodated inside the U-shaped opening, and the power cables 3 are pressed by a plurality of horizontal plate members 15 arranged in the vertical direction.

  Next, as shown in FIG. 5, the cable tray 5 is separated from the cable tray 5 on the floor 7 and is spaced above the curve 9 disposed around the cable tray 5 so as to cover the cable tray 5. A plurality of rectangular first boards 17 are placed in a rectangular shape in plan view on the upper end of the long member 13 having an L-shaped cross section. Then, the first board 17 is appropriately fixed to the cable tray 5 with screws and bonds or double-sided tape.

  Next, as shown in FIG. 6, a first sheet metal 19 having a U-shaped cross section that is substantially the same size as the first board 17 in an elevational view is disposed so as to cover each first board 17. Then, the first sheet metal 19 is appropriately fixed to the first board 17 with screws and bonds or double-sided tape. Since the primer for adhering the polyurea resin sprayed in the subsequent process is difficult to adhere to the fireproof board, the first sheet metal 19 is fixed to the first board 17.

  Next, as shown in FIGS. 7 and 8, the lower end of the first board 17 and the lower end of the first board 17 are arranged so that there is no gap between the lower end of the first board 17 and the L-shaped long material 13 or the curve 9. The backup material 21 is arranged between the curve 9 and the four sides. As the backup material 21, a glass wool heat insulating material is used.

  Next, as shown in FIGS. 9 and 10, the polyurea 23 is sprayed without gaps so as to cover the first sheet metal 19, the backup material 21, the curve 9, and the floor 7. The polyurea 23 is sprayed onto the floor 7 wider than the shape of the lower portion of the second sheet metal in a plan view.

  After the polyurea 23 is dried, as shown in FIG. 11, the second board 25 is arranged so as to cover the polyurea 23, and the second sheet metal 27 is placed on the floor 7 so as to cover the polyurea 23 and the second board 25. Place on top.

<Modification 1>
In the said embodiment, the cable tray 5 demonstrated two examples. However, the present invention is not limited to this, and even when the cable tray 5 is 1 or 3 or more, the cable tray is provided with one columnar shape as in the above embodiment, thereby providing the water stop structure according to the present invention. Construction method can be implemented.

<Modification 2>
In the said embodiment, the example which uses the heat insulating material of glass wool as the backup material 21 was demonstrated. However, the present invention is not limited to this, and as the backup material 21, a heat insulating material such as rock wool or a fireproof board may be used. Even in this case, the water stop structure according to the present invention can be provided and the water stop construction method can be carried out by spraying the polyurea 23 as in the above embodiment.

<Modification 3>
In the said embodiment, the example which uses the some 1st sheet metal 19 was demonstrated. However, the present invention is not limited to this, and a single sheet metal having a rectangular shape in plan view may be used. Although it becomes difficult to carry compared with the case where the some 1st sheet metal 19 is used, an attachment process can be simplified.

<Modification 4>
In the said embodiment, the example which uses the 2nd sheet metal 27 was demonstrated. However, the present invention is not limited to this, and a second sheet metal made of three or more divided sheet metals may be used. The joining process is increased as compared with the case of using two divided sheet metal second sheet metals, but transportation is facilitated. Further, a second sheet metal made of one sheet metal may be used. A joining process can be reduced by using one sheet metal. In addition, joining is performed by a helical fold.

<Modification 5>
In the said embodiment, the example which sprayed polyurea to the upper end of the fireproof board was demonstrated. However, the present invention is not limited to this, and polyurea may not be sprayed to the upper end of the fireproof board. Even in this case, water leakage to the lower floor can be prevented.

DESCRIPTION OF SYMBOLS 1 Water stop structure 3 Power cable 5 Cable tray 7 Floor 9 Curve 13 Long material 15 Horizontal plate material 17 1st board 19 1st sheet metal 21 Backup material 23 Polyurea 25 2nd board 27 2nd sheet metal

Claims (5)

In the water stop structure that prevents the leakage of water from the floor between the cable tray and the floor through which the cable tray that stores the cable inside and extends in the vertical direction passes,
In order to prevent water from entering between the floor and the cable tray, a water-stopping structure is characterized in that a spray resin having water-stopping properties when viewed from an elevation extends upward from the floor surface and is arranged around the cable tray. . In the water stop structure that prevents the leakage of water from the floor between the cable tray and the floor through which the cable tray that stores the cable inside and extends in the vertical direction passes,
A curve is arranged around the cable tray on the floor so as to be separated from the cable tray, and a first board is arranged above the curve so as to cover the cable tray so as to be separated from the curve. The first sheet metal is disposed so as to cover the periphery of the sheet, the backup material is disposed between the lower end of the first board and the curve, and the polyurea is disposed so as to cover the first sheet metal, the backup material, the curve, and the floor. The water stop structure is characterized in that the second board for protecting the polyurea is disposed so as to cover the polyurea and the second sheet metal is disposed so as to cover the polyurea and the second board.   A plurality of cable trays are arranged in the horizontal direction so as to cover the plurality of cable trays, the first board, the first sheet metal, the backup material, the polyurea, the second board, and the second sheet metal. The water stop structure according to claim 2, wherein:   The water stop structure according to claim 2 or 3, wherein the second sheet metal is composed of one sheet metal. In the water stop construction method that prevents leakage of water from the floor between the cable tray and the floor through which the cable tray that extends in the vertical direction and stores the cable,
Place the first board above the curve so as to cover the circumference of the cable tray spaced apart from the cable tray on the floor and away from the curve placed around the cable tray;
Arrange the first sheet metal so as to cover the periphery of the first board,
Place backup material between the lower edge of the first board and the curve,
Spray polyurea over the first sheet metal, backup material, curve and floor,
A water stoppage construction method characterized in that a second board is disposed so as to cover polyurea, and a plurality of sheet metals constituting the second sheet metal are disposed on the floor so as to cover the second board.

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