JP6410975B1 - Floor slab drainage pipe and bridge surface drainage system construction method using the slab drainage pipe - Google Patents

Abstract

A floor slab drainage pipe that can be easily and reliably installed. A saucer (12) having a substantially disc-shaped upper portion (12a) having a through hole (12a1) provided in the center and a substantially cylindrical lower portion (12b) disposed below the upper portion. And a drain pipe (14) disposed below the tray, and an installation spring (20) disposed below the upper portion and around the lower portion, and by extending and retracting the installation spring, A floor slab drainage pipe (10) is provided which is configured to adjust the installation height of the floor slab. [Selection] Figure 1

Description

  The present invention relates to a floor slab drain pipe and a bridge surface drainage system construction method using the floor slab drain pipe.

  Conventionally, the drainage of the bridge surface of the bridge is guided to a desired location by installing a floor drainage pipe at a predetermined location on the bridge surface and connecting a flexible pipe or the like to the lower end of the floor drainage pipe. It is configured. In the construction of such a bridge drainage system, in the new construction work, it is necessary to install the floor slab drain pipe by fixing it to the surrounding reinforcing bars, and to fix the concrete by placing concrete, and in the repair work, It was necessary to make a hole in the concrete floor slab, insert a drain pipe for the floor slab, and fix it with an adhesive. In such a case, particularly in the repair work, it was necessary to temporarily fix the drainage pipe to the concrete frame so that the drainage pipe does not fall until the filled adhesive is cured.

  Under such circumstances, the present inventor proposed a floor slab drainage pipe that can be installed without the need for a dedicated lifting tool (see Patent Document 1).

Japanese Patent No. 6067425

  Fortunately, the floor drainage pipe of Patent Document 1 has been well received, but there is a demand for easier and more reliable construction.

  The present invention has been developed in view of such a situation, and can be installed more easily and reliably. A slab drainage pipe and a bridge surface drainage system construction using the slab drainage pipe It aims to provide a method.

  A floor slab drain pipe according to claim 1 of the present invention includes a substantially disk-shaped upper portion provided with a through hole in the center, and a saucer that is disposed below the upper portion and has a substantially cylindrical lower portion. A drainage pipe disposed below the saucer; and an installation spring disposed below the upper portion and around the lower portion, and the installation spring is expanded and contracted to extend and retract the saucer. It is characterized by being configured to adjust the height.

  The floor slab drain pipe according to claim 2 of the present application is the floor slab drain pipe according to claim 1, wherein each of the trays has a predetermined shape by inserting pins into a plurality of holes provided in the upper portion. It is constituted so that it may be fixed to an installation position.

  The floor slab drain pipe according to claim 3 of the present application is the floor slab drain pipe according to claim 1 or 2, wherein the liquid adhesive is placed at a position spaced apart from each other in the diametrical direction of the peripheral portion of the upper portion. An opening serving as an inlet and an observation port is provided, respectively.

  The floor slab drain pipe according to claim 4 of the present application is the floor slab drain pipe according to claims 1 to 3, wherein the tray is made of stainless steel or a synthetic resin material. It is.

  A method for constructing a bridge surface drainage system using the floor slab drainage pipe according to any one of claims 1 to 4 according to claim 5 is the floor slab. Drilling a hole having a diameter slightly larger than the outside diameter of the floor slab drainage pipe at the location of the concrete frame where the drainage pipe is to be installed, and drilling a counterbore hole at the upper end of the hole And, when the floor slab drain pipe is inserted into the hole, after sticking a seal tape at a position located at the lower end of the hole, inserting the floor slab drain pipe into the hole; Adjusting the height of the tray by expanding and contracting the mounting spring, and filling the gap between the hole and the floor drainage pipe with a liquid adhesive. To do.

  A method for constructing a bridge surface drainage system below the curb using the floor slab drainage pipe according to any one of claims 1 to 4 according to claim 6 of the present application is as follows. Drilling a hole having a diameter slightly larger than the outer diameter of the floor slab drainage pipe at a location of the concrete frame where the floor slab drainage pipe is to be installed; A step of drilling a hole, and when the floor slab drain pipe is inserted into the hole, a seal tape is applied to a position located at the lower end of the hole, and then the floor slab drain pipe is inserted into the hole. Adjusting the height of the tray by expanding and contracting the installation spring, filling the gap between the hole and the floor slab drain pipe with a liquid adhesive, and Installing a hemispherical cup with a drain hole above the saucer. It is intended to.

  According to the present invention, since the installation spring is provided, the height of the tray can be easily adjusted during construction. Moreover, a saucer can be reliably fixed to a predetermined location with a pin. Moreover, by providing the opening in the tray, the liquid adhesive can be easily injected and over-injection can be prevented. Moreover, favorable corrosion resistance can be obtained by forming a saucer with stainless steel or a synthetic resin material. Furthermore, a suitable drainage system can be easily constructed by using a cup also below the curb.

It is the exploded view which showed each component of the floor slab drain pipe which concerns on preferable embodiment of this invention. 2A is a view taken along line 2a-2a in FIG. 1, and FIG. 2B is a view seen along line 2b-2b in FIG. It is sectional drawing which united each component of FIG. It is the schematic which showed the whole bridge surface drainage system. It is an enlarged view of the part 5 of FIG. 6 (a) to 6 (f) are diagrams showing a series of procedures for constructing the bridge drainage system, FIG. 6 (g) is an enlarged view of a portion 6g of FIG. 6 (f), and FIG. h) is a view taken along line 6h-6h in FIG. 6 (g). It is the figure which showed construction of the bridge surface drainage system under the curb, and Fig.7 (a) is a mimetic diagram showing the state where the floor slab drainage pipe of Drawing 1 was installed under the curb, 7B is a perspective view of the hemispherical cup, FIG. 7C is a plan view of the hemispherical cup installed under the curb, and FIG. 7D is a line of FIG. 7C. It is sectional drawing seen along 7d-7d.

  Next, a floor slab drain pipe according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded view of each component of a floor slab drain pipe according to a preferred embodiment of the present invention. A floor slab drain pipe according to a preferred embodiment of the present invention, generally indicated by reference numeral 10 in FIG.

  The saucer 12 has a substantially disk-shaped upper portion 12a and a lower portion 12b that is substantially cylindrical and is disposed below the upper portion 12a. Preferably, the tray 12 is made of stainless steel or a synthetic resin material in consideration of corrosion resistance.

  As shown in FIG. 2 (b), a through hole 12a1 is provided in the center of the upper portion 12a of the tray 12, and the peripheral portion of the upper portion 12a is spaced apart from each other in the diametrical direction. A substantially rectangular opening 12a2 is provided. The through-hole 12a1 serves as a drainage channel to a drain pipe, which will be described later, and the opening 12a2 serves as a liquid adhesive injection port and an observation port. The upper portion 12a is provided with a plurality of holes 12a3 (three are shown in FIG. 2B but not limited thereto) for inserting pins to be described later.

  Preferably, the upper portion 12a is shaped to be slightly inclined downward from the peripheral edge toward the central through hole 12a1 so that drainage can be easily performed.

The lower end 12b1 of the lower portion 12b of the tray 12 is provided with a step on the outer surface so that a water draining pipe to be described later can be easily inserted. Preferably, the lower portion 12b, as shown in FIG. 3, the inner diameter is shaped to become gradually smaller toward the lower end D ₂ from the top D _1. This is expected to improve drainage capacity.

  The upper portion 12a and the lower portion 12b of the tray 12 may be formed integrally, or may be formed separately and integrated using an adhesive or the like.

  The floor slab drain pipe 10 is also provided with a drain pipe 14 disposed below the tray 12. The drain pipe 14 is formed of a cylindrical stainless steel pipe. A female screw 14 a is cut at the lower end of the drain pipe 14, and a nipple 14 b is screwed into the lower end of the drain pipe 14.

  A water guide flexible pipe 16 is connected to the nipple 14b of the drain pipe 14 (see FIG. 4). The water guide flexible tube 16 itself is a known one.

  The floor slab drain pipe 10 is also provided with an eye plate 18 that covers the through hole 12a1 of the tray 12. The eye plate 18 has a plurality of drain holes 18a. The eye plate 18 is preferably made of stainless steel in consideration of corrosion resistance.

  Preferably, a concave portion 12a4 for disposing the eye plate 18 is provided on the upper surface of the upper portion 12a of the tray 12, and the outer diameter and depth of the concave portion 12a4 are substantially the same as the outer diameter and thickness of the eye plate 18. Shaped to be equivalent. The eye plate 18 may be firmly fixed to the recess 12a4 with an adhesive, or may only be fitted into the recess 12a4. In addition, you may make it not arrange | position the eye plate 18 by inserting a water conduit in the through-hole 12a1.

  The floor slab drain pipe 10 further includes an installation spring 20 disposed below the upper portion 12a of the tray 12 and around the lower portion 12b, and a pin 22 inserted into the hole 12a3 of the upper portion 12a of the tray 12. ing. The installation spring 20 is used to adjust the installation height of the tray 12, for example, the wire is larger than the required outer diameter of the lower portion 12 b of the tray 12 and smaller than the diameter of a counterbore hole described later. ) You may use what was wound to the diameter. The pin 22 is for fixing the tray 12 in a predetermined installation position, and a known snap pin that is inexpensive and easy to handle is preferably used. By fixing the tray 12 with the pins 22, the connection between the floor slab drain pipe 10 and the water guide pipe is secured, and good drainage of the bridge surface becomes possible.

  FIG. 3 is a cross-sectional view showing a state in which the tray 12, the drain pipe 14 and the eye plate 18 are combined. An installation spring 20 is positioned below the upper portion 12a of the tray 12, that is, around the lower portion 12b. The pin 22 is inserted into the hole 12a3 of the upper portion 12a of the tray 12 and the tip is expanded.

  Next, a method of constructing a bridge surface drainage system using the floor slab drainage pipe 10 configured as described above will be described. FIG. 4 is a schematic view showing the entire bridge surface drainage system, and FIG. 5 is an enlarged view of a portion 5 of FIG. The bridge surface drainage system shown in FIG. 4 includes a floor slab drain pipe 10 installed so as to penetrate the bridge in a substantially vertical direction at a location adjacent to the bridge cover, and a lower end of the floor slab drain pipe 10. And a water guide flexible pipe 16 fixed to the housing with a fixture.

  FIG. 6 is a series of diagrams illustrating a procedure for installing the floor slab drain pipe 10. First, a hole having a diameter slightly larger than the outer diameter of the floor slab drain pipe 10 is drilled in a place where the floor slab drain pipe 10 is to be installed (see FIG. 6A). A counterbore hole is drilled at the upper end (see FIG. 6B). Next, when the floor slab drain pipe 10 is inserted into the hole, a seal tape is applied to a position located at the lower end of the hole, and the floor slab drain pipe 10 is inserted into the hole. The inserted floor slab drain pipe 10 is supported by a counterbore through the installation spring 20 (see FIG. 6C). The reason why the seal tape is affixed to the floor slab drain pipe 10 is to prevent the adhesive injected into the gap from flowing down. As the sealing tape, usually, a foamed material with one surface (the surface contacting the floor slab drainage pipe 10) being subjected to adhesive processing is used.

  If the upper surface of the upper portion 12a of the tray 12 is positioned below the upper surface of the concrete surface of the bridge with the floor slab drainage pipe 10 supported by the counterbore, the installation spring 20 is stretched. Then, the height of the installation spring 20 is increased and adjusted so that the upper surface of the upper portion 12a of the tray 12 is flush with the upper surface of the concrete surface of the bridge. On the other hand, when the upper surface of the upper portion 12a of the receiving tray 12 is located above the upper surface of the concrete surface of the bridge, the mounting spring 20 is compressed to reduce the height of the mounting spring 20, and the receiving tray 12 is lowered. It adjusts so that the upper surface of the upper part 12a may be flush with the upper surface of the concrete surface of the bridge. In this way, the height of the tray 12 (and hence the floor slab drainage pipe 10) can be easily adjusted by extending or contracting the installation spring 20.

  Next, the liquid adhesive is filled into the gap between the drilling hole and the floor slab drain pipe 10 from the opening 12a2 of the upper portion 12a of the tray 12 (see FIG. 6D). In addition, when injecting the liquid adhesive, observing the inside of the gap from the opening 12a2 and taking care not to overinject. In addition, when the liquid adhesive is cured, the tray 12 (and hence the floor slab drain pipe 10) is securely fixed at a predetermined position via the pin 22. Next, the eye plate 18 is installed at the upper end of the floor slab drain pipe 10, and the water guide flexible pipe 16 and the like are attached to the lower end of the floor slab drain pipe 10 (see FIG. 6 (e)). Finally, a floor slab waterproof layer is installed (see FIG. 6 (f)). Note that the order of the steps shown in FIG. 6E and the steps shown in FIG. 6F may be reversed.

  FIG. 6G is an enlarged view of the portion 6g in FIG. 6F, and FIG. 6H is a plan view taken along line 6h-6h in FIG. 6G. In addition, the construction method which does not provide a floor slab waterproof layer to the upper surface of the saucer 12 is also employable.

  The construction method described above is a method for installing the floor slab drainage pipe 10 on the roadway or sidewalk of the bridge, but the floor slab drainage pipe 10 is installed below the curb installed at the boundary between the roadway and the sidewalk. The construction method in this case will be described below with reference to FIG. When the curb is installed, mortar (cement: sand = 1: 3) is spread on the installation site, and the curb is determined on the position and height. Below the curb is the lowest position where water congestion is concentrated on the bridge, and mortar is spread all the time, so it is constantly in water. In addition, the recessed part is provided in the lower part of the curbstone (refer Fig.7 (a)).

  First, the floor slab drainage pipe 10 is installed below the curb in the same procedure as that described above when installed on a roadway or sidewalk. Next, the hemispherical cup 24 is installed above the saucer 12 (in other words, the saucer 12 is covered with the hemispherical cup 24). As shown in FIG. 7B, the hemispherical cup 24 is provided with a notch 24a for connecting a water conduit and a drain hole 24b. The size of the hemispherical cup 24 is such that it can completely cover the saucer 12 and is accommodated in the recess at the bottom of the curb. The hemispherical cup 24 is preferably formed of a material having both corrosion resistance and strength (for example, stainless steel or a synthetic resin material). It is preferable that a water guide pipe is connected to the notch 24a of the hemispherical cup 24 so that the stagnant water around the curb is guided to the floor slab drain pipe 10 (see FIGS. 7 (c) and 7 (d)).

  The reason why the hemispherical cup 24 is installed is that a mortar covers the top of the tray 12, so that a space is secured above the tray 12 and good drainage is possible.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, the detailed shape and dimensions of the illustrated components (the pan 12, the drain pipe 14, the water guide flexible tube 16, the eye plate 18, the spring for installation, the pin 22, and the cup 24) are merely illustrative. Instead, shapes and dimensions other than those illustrated may be employed.

DESCRIPTION OF SYMBOLS 10 Floor drain pipe 12 Receptacle 12a Upper part 12a1 Through-hole 12a2 Opening 12a3 Hole 12a4 Recessed part 12b Lower part 12b1 Lower end 14 Drain pipe 14a Female thread 14b Nipple 16 Water guide flexible pipe 18 Eye dish 18a Drain hole 20 Pin 24 Spring 24 Hemispherical cup 24a Notch for water pipe 24b Drain hole

Claims (6)

A substantially disc-shaped upper portion provided with a through-hole in the center, and a saucer disposed below the upper portion and having a substantially cylindrical lower portion;
A drain pipe arranged below the saucer;
An installation spring disposed below the upper portion and around the lower portion;
The floor slab drainage pipe is configured to adjust the installation height of the tray by expanding and contracting the installation spring.   2. The floor slab according to claim 1, wherein the tray is fixed at a predetermined installation position by inserting pins into a plurality of holes provided in the upper portion. Drain pipe.   3. The liquid adhesive injection port and an opening serving as an observation port are respectively provided at positions spaced apart from each other in the diametrical direction in the peripheral portion of the upper portion, respectively. Floor drainage pipe.   The floor slab drainage pipe according to any one of claims 1 to 3, wherein the tray is made of stainless steel or a synthetic resin material. A method for constructing a bridge surface drainage system using the floor slab drainage pipe according to any one of claims 1 to 4,
Drilling a hole having a diameter slightly larger than the outer diameter of the floor slab drainage pipe at the location of the concrete frame where the floor slab drainage pipe is to be installed, and a counterbore hole at the upper end of the hole And when a floor tape drain pipe is inserted into the hole, a seal tape is applied to a position located at a lower end of the hole, and then the floor drain pipe is inserted into the hole. Adjusting the height of the saucer by expanding and contracting the installation spring, and filling a gap between the hole and the floor slab drain pipe with a liquid adhesive. A method characterized by. A method for constructing a bridge drainage system below a curb using the floor slab drainage pipe described in any one of claims 1 to 4,
Drilling a hole having a diameter slightly larger than the outer diameter of the floor slab drainage pipe at the location of the concrete frame where the floor slab drainage pipe is to be installed, and a counterbore hole at the upper end of the hole And when a floor tape drain pipe is inserted into the hole, a seal tape is applied to a position located at a lower end of the hole, and then the floor drain pipe is inserted into the hole. Adjusting the height of the tray by expanding and contracting the installation spring; filling a gap between the hole and the floor drainage pipe with a liquid adhesive; and the tray Placing a hemispherical cup with drainage holes above the top.

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