JPH0782993A - Hanging reinforcement metal fixture - Google Patents

Abstract

PURPOSE:To prevent water leakage by making a heat adherence synthetic resin flange provided to a metal fixture basic end section thermally adhere to a waterproof sheet after a metal fixture having a reinforcement holding section on the front end thereof passes through the waterproof sheet spread over a waterproofed wall and is driven. CONSTITUTION:A waterproof sheet 9 of heat adherence synthetic resin is spread on a waterproofed wall 8. After that, the basic end section of a metal fixture main body 2 passes through the sheet 9 and is driven in the wall 8, and a screw section 5 is screwed to a nut 10 buried in the wall 8 in advance. Then, the bottom of a flange-shaped section 7 is made to thermally adhere to the sheet 9 to seal, and the leakage of spring water from the wall 8 side is prevented. Even if there is slippage in the sheet 9 by pulling it with some sort of force, the sheet 9 is combined with a cover 3, so that no water leakage occurs. In addition, if necessary, in the case the upper part of the cover 3 is contracted with a contraction band 13, even if the adherence between the main body 2 and cover 3 is deteriorated, water leakage can be prevented. According to the constitution, water leakage can be completely prevented and, at the same time, execution can be very simply made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging rebar metal fitting which is placed on a waterproof wall such as the ground of a tunnel or a primary lining concrete. More specifically, it is waterproof to prevent water leakage from the waterproof wall. The present invention relates to a waterproof type reinforcing bar metal fitting which can prevent water from leaking from a penetrating part formed in a waterproof sheet by a hanging bar metal fitting which is pierced through a waterproof sheet stretched over a construction wall.

[0002]

2. Description of the Related Art Conventionally, in order to prevent the spring water from the ground of the tunnel or the primary lining concrete from leaking to the side of the secondary lining concrete, the ground and the primary lining concrete are protected. It has been practiced to put a waterproof sheet on the construction wall such as. Since this waterproof sheet is functionally water-tight, the waterproof sheets are connected to each other in a liquid-tight manner, and the nails that secure the waterproof sheet to the wall are also designed to prevent water leakage. .

However, in the case where the secondary lining concrete has a reinforced concrete structure, when the spine is assembled, the suspending reinforcing bar metal fittings are pierced through the waterproof sheet and driven into the primary lining concrete through concrete anchors, etc. It is installed, but at this time, a hole is made in the waterproof sheet by driving the suspension bar metal fittings, and water leaks from this.

Therefore, in order to prevent water from leaking from the penetrating portion, various rubber sheets, rubber asphalt adhesive sheets, soft resin sheets, etc. are used as packing materials or sealing materials, and washers are applied to the waterproof sheet from the top to the natural ground ( Tighten the sprayed concrete part, etc.) via concrete anchors, etc.
The holding method is used.

However, the ground portion (such as sprayed concrete portion) to be tightened and pressed is not smooth but has a lot of remarkable unevenness. Therefore, the packing material or the sealing material is pressed uniformly until it has a waterproof function. It is difficult to do so, and even if the packing material or the sealing material is tightened and pressed down, there is a problem that the waterproofness is not maintained.

A method of using water-expanded rubber as a packing material or a sealing material is also known, but the penetrating part of the waterproof sheet is contacted only by pressing the packing material or the sealing material of the waterproof sheet and pressing it. When the waterproof sheet is pulled or displaced, only the sheet stretches and the through hole is exposed by shifting from the holding part such as the packing of the through hole,
In many cases, the waterproof property is lost. As described above, the use of the water-expandable rubber packing material or the sealing material causes a high cost, and the concern about water leakage cannot be eliminated.

Further, it is also practiced to prevent water leakage by spraying resin powder on the penetrating portion and melting it or supplying molten synthetic resin to repair the damaged portion.

However, the method of supplying and melting the resin powder or supplying the molten synthetic resin is complicated, and the above-mentioned damaged portion is caused by spring water from the natural side when the metal fitting is driven. If is wetted with water before the supply and melting of the resin powder or the supply of the molten resin, the adhesion between the molten resin and the waterproof sheet or the metal fitting deteriorates, which may cause water leakage.

The present invention has been made in view of the above circumstances.
An object of the present invention is to provide a hanging rebar metal fitting that can reliably prevent water leakage from the penetrating portion of the waterproof sheet that occurs when the waterproof sheet is penetrated and driven, and that is also easy to perform such water leakage prevention construction.

[0010]

In order to achieve the above-mentioned object, the present invention has the above-mentioned construction wall in which the surface whose base end is stretched over the waterproof construction wall penetrates a waterproof sheet made of a heat-adhesive synthetic resin. Suspended rebar metal fittings main body that is driven into
While covering a part or all of the outer peripheral portion of the metal fitting body leaving the base end portion, the base end portion of the covering portion spreads laterally and the bottom surface has a flange-like portion that can be heat-welded to the surface of the waterproof sheet. Provided is a suspending bar metal fitting, which is provided with a water leakage prevention cover made of a heat-adhesive synthetic resin. In this case, it is possible to further provide an elastic band for pressing the fitting main body covering portion of the water leakage prevention cover.

[0011]

In the hanging rebar bracket of the present invention, a waterproof sheet whose surface is made of a heat-adhesive synthetic resin is stretched on a waterproof construction wall such as the ground of a tunnel or a primary lining concrete. While driving the base end into the waterproof construction wall,
It is used by attaching and holding a reinforcing bar at its tip.In this case, the waterproof sheet is damaged by the penetration of the waterproof sheet. By adhering and sealing, it will be integrated with the waterproof sheet, and as a result, water leakage from the above-mentioned penetrating portion will not further penetrate to the outside, and water leakage from this penetrating portion can be reliably prevented and waterproof. Even if the sheet is pulled, the through hole due to the suspension reinforcing bar metal fitting is not exposed due to the displacement of the waterproof sheet, and the water leakage prevention can be reliably maintained. In this case, attach the elastic band from above the cover,
If pressure is applied, even if the adhesion between the metal fitting body and the cover deteriorates, there is no risk of water leakage.

Further, in the hanging rebar fitting of the present invention, water leakage from the penetrating portion can be prevented only by thermally adhering the bottom surface of the flange portion of the cover to the surface of the waterproof sheet. Is very easy.

[0013]

An embodiment of the present invention will be described below with reference to FIGS. In the drawings, reference numeral 1 denotes a hanging rebar metal fitting according to an embodiment of the present invention, which is a round bar-shaped hanging rebar metal fitting body 2
And a water leakage prevention cover 3 provided so as to cover a part of the outer peripheral portion thereof.

The metal fitting body 2 is made of a metal such as steel, and its tip portion is bent in a U shape so that the U-shaped tip portion 4 holds the reinforcing bar. Further, on the outer peripheral portion of the base end portion of the metal fitting body 2, a screw portion 5 that is screwed with an embedded nut described later is formed.

The cover 3 is made of a heat-adhesive synthetic resin, and is provided from a point in front of the threaded portion 5 of the metal fitting body 2 to a substantially central portion of the metal fitting body 2 in the axial direction. The outer peripheral portion is covered and integrally bonded to the outer peripheral portion, and the base end side of the cover portion 6 of the cover 3 laterally spreads like a disc, and the flange portion 7 is integrally formed. The bottom surface of the shaped portion 7 is formed in a flat shape so that the outer peripheral edge side thereof can be heat-bonded to the surface of the waterproof sheet.

As shown in FIG. 2, the suspension bar metal fittings are
A waterproof sheet 9 whose surface is formed of a synthetic resin that can be heat-bonded is stretched on a waterproof construction wall 8 such as a ground or a primary lining concrete, and then the waterproof sheet 9 penetrates through the waterproof sheet 9 to attach the waterproof construction wall 8 to the metal fitting. It is used by driving the base end of the main body 2 and screwing the threaded portion 5 into an embedded nut 10 which is embedded in the construction wall 8 in advance, and fixing the same. In this case, the metal fitting body 2 is used. After driving into the
The bottom surface of the waterproof sheet 9 to the heat-bondable surface of the waterproof sheet 9
By doing so, it seals. In this case, as the method for heat-bonding the flange portion 7 and the waterproof sheet 9, hot-air welding, hot-plate welding, ultrasonic welding, high-frequency or low-frequency welding,
Dielectric heating welding or the like can be adopted. The waterproof sheet 9 is broken by driving the metal fitting body 2, and the spring water on the construction wall 8 side leaks from the penetrating portion 12, but as described above, the cover 3 is bonded and integrated to cover the outer peripheral portion of the metal fitting body 2. At the same time, the bottom surface of the flange-like portion 7 of the cover 3 is heat-bonded and sealed to the surface of the waterproof sheet 9, and the waterproof sheet 9 and the cover 3 are integrated, so that the leakage of water cannot penetrate further outside. In addition, even if the waterproof sheet 9 is pulled by some force and the waterproof sheet 9 is displaced, the waterproof sheet 9 and the cover 3 are integrated, so that external leakage from the penetrating portion 12 can be ensured. That is being prevented. In the figure, 14 is a washer made of an elastic material.

In this case, as shown in the figure, if the upper part of the cover 3 is tightly pressed by the elastic band 13, the metal fitting body 2 should be pressed.
Even if the adhesion between the cover 3 and the cover 3 deteriorates, water leakage is prevented from occurring.

After the above construction, as shown in FIG. 2, the reinforcing bar 15 is attached to the U-shaped tip 4 of the metal fitting body 2.

Further, as shown in FIG. 3, a disc-shaped pad 16 having substantially the same size as the flange 7 and having a hole at the center is interposed between the waterproof sheet 9 and the waterproof construction wall 8. Therefore, the flange-shaped portion 7 can be thermally bonded to the waterproof sheet 9 without being affected by the unevenness of the waterproof construction wall 8. The thickness of the contact plate 16 is preferably about 0.3 to 5 mm, and may be made of not only metal but also plastic.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the water leakage prevention cover 3 covers the entire outer peripheral portion of the suspension rebar metal fitting 2 other than the base end side, including the tip thereof. Since the other configurations and effects are the same as those of the embodiment of FIGS. 1 and 2, the same reference numerals are given and the description thereof is omitted.

The present invention is not limited to the above-described embodiment. For example, the metal fitting body 2 may be not only rod-shaped but also plate-shaped, and its tip shape is not limited to U-shape. Furthermore, the planar shape of the flange portion 7 is also a triangle, a quadrangle,
Various modifications such as polygonal shape, elliptical shape, etc.
Can be formed into a skirt or the like, and other configurations can be variously modified within the scope of the invention. In addition, the hanging rebar bracket of the present invention is used for waterproofing tunnels,
It is used for various civil engineering works and construction works.

[0022]

EFFECTS OF THE INVENTION When the hanging rebar fitting of the present invention is used by penetrating a waterproof sheet and driving it into a waterproof construction wall, the above-mentioned driving does not cause water leakage from the penetrating part of the waterproof sheet to further penetrate to the outside. The water leakage from the portion can be surely prevented, and the water leakage prevention work is very simple because the bottom surface of the flange-shaped portion is simply heat-bonded to the surface of the waterproof sheet.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a usage state of the same example.

FIG. 3 is a cross-sectional view illustrating another usage state of the same example.

FIG. 4 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Suspended rebar bracket 2 Suspended rebar bracket main body 3 Leakage prevention cover 6 Cover part 7 Flange part 8 Preventive construction wall 9 Waterproof sheet 11 Thermal bonding 13 Thermal banding

Claims (2)

[Claims] 1. A main body of a suspended reinforcing bar metal fitting, the base end of which is stretched over a waterproof construction wall, penetrates a waterproof sheet made of a heat-adhesive synthetic resin and is driven into the construction wall, and the tip portion of which holds a reinforcing bar. And a part or all of the outer peripheral portion of the metal fitting body is covered while leaving the base end portion, and the base end portion of the cover portion spreads laterally so that the bottom surface is a flange shape that can be heat-welded to the surface of the waterproof sheet. And a water leakage prevention cover made of a heat-adhesive synthetic resin in which a portion is formed. 2. The hanging rebar metal fitting according to claim 1, further comprising a tightening band for tightly pressing the metal fitting body covering portion of the water leakage prevention cover.