JPH0626638Y2 - Tunnel hanging rebar bracket - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use In reinforcing bars for concrete lining of tunnels, in order to arrange reinforcing bars at required places, it is called a metal fitting for supporting the reinforcing bars, that is, a hanging reinforcing bar metal fitting. It is necessary to attach things to the primary lining of the tunnel.

The present invention relates to a suspension rebar fitting of this kind, and in particular, a primary lining side welding disc, which is attached to the tunnel primary lining surface by anchoring the rod to the tunnel primary lining with an anchor rod, and the primary lining side welding disc. Of the heat-welding waterproof sheet stretched from the top to the tunnel primary lining surface, the secondary lining-side welding disc to be heat-welded to the corresponding portion of the disc, and the rebar support frame having the secondary lining-side welding disc at the upper end. TECHNICAL FIELD The present invention relates to a tunnel suspension reinforcing bar metal fitting including a rod.

Under the waterproof sheet construction of such specifications, in the tunnel where the primary lining surface was secondarily covered with concrete, since the primary lining is insulated by the interposition of the waterproof sheet for the connection with the secondary lining concrete, When an earthquake occurs, slide against the secondary lining concrete.

On the other hand, the primary lining side welding disc in the above-mentioned type of hanging reinforcing bar metal fittings is attached to the primary lining surface of the tunnel, and the surface opposite to the primary lining surface and the waterproof sheet of the corresponding part are attached. It is melted by hot air, and a waterproof sheet is pressed against the disc to be welded.

Then, the secondary-side welding discs are melted with hot air and pressed against the waterproof sheet thus applied to the primary lining surface to attach the reinforcing bar support rod to the primary lining. That is, the hanging rebar metal fitting is attached to the primary lining.

The waterproof sheet constructed with such specifications is preferably soft in terms of workability. However, a soft waterproof sheet is generally easily melted by heat, and there is a high possibility that hot air will cause a melted hole during welding.

Thus, it is required that the welding lining on the primary lining side of the above-mentioned type of hanging reinforcing bar metal fitting be as easily heat-melted as a soft waterproof sheet. In order to satisfy this demand, it is necessary to solve the problem that the welding disc is likely to be melted and collapsed by hot air at the time of welding because it is easily melted by heat.

2. Description of the Related Art Conventionally, the anchor rods of the above-described tunnel suspension rebar fittings have a structure that is the same as that of the lock bolt. When the primary lining slides against the secondary lining concrete when an earthquake occurs in the conventional lining, the movement of the welding lining on the primary lining side causes the movement of the welding lining on the primary lining side.
There is a problem that the welded portion of the waterproof sheet to the disc is damaged and the sealing function of the waterproof sheet in this portion is impaired.

Further, conventionally, there has been no solution to the problem of overcoming the problem of being easily melted and collapsed by hot air and embodying the application of the welding lining on the primary lining side that is easy to heat-melt and suitable for the construction of a soft waterproof sheet. By the way, in the past, when using a waterproof tarpaulin that employs the above-mentioned type of hanging rebar bracket, when using a soft tarpaulin, the welding lining on the primary lining side is generally used without being changed to the one that is easier to heat melt than the tarpaulin. We take measures to prevent the hot air from hitting the waterproof sheet too much by applying what is difficult to melt and collapse. Even so, it is not uncommon for the waterproof sheet to be melted by hot air.

That is, in the conventional technology, there is a problem in adopting a soft waterproof sheet in the waterproof sheet construction according to the above specification.

The problem to be solved by the invention The problem to be solved is the above-mentioned problem in the prior art.

Means for Solving the Problems To solve the above problems, the present invention has the following configuration.

That is, the present invention relates to [1] a primary lining side welding disc attached to a tunnel primary lining surface by anchoring the rod to the primary lining side of the tunnel with an anchor rod, and the tunnel from the primary lining side welding disc. A heat-welding waterproof sheet stretched over the primary lining surface includes a secondary lining-side welding disc heat-welded to a corresponding portion of the disc, and a reinforcing bar support rod having the secondary lining-side welding disc at the upper end. A tunnel hanging rebar metal fitting, wherein the anchor rod has a cut on the peripheral surface corresponding to the tunnel primary lining surface,
Tunnel hanging rebar fitting [2] An anchor in which the welding lining on the primary lining side is joined to the surface of a hard plate with perforations fixed to the lower end of the anchor rod in such a manner that a part of the disc is filled in the perforations of the plate. Welding disc on the primary lining side, which is attached to the primary lining surface of the tunnel by anchoring the rod to the primary lining surface of the tunnel with a rod, thermal welding on the primary lining surface of the tunnel from above the welding disc on the primary lining side Of a waterproof waterproof sheet, a secondary lining side welding disc heat-welded to a corresponding portion of the disc, and a tunnel suspension rebar metal fitting including a rebar supporting rod having the secondary lining side welding disc at the upper end, The anchor rod has a part corresponding to the tunnel primary lining surface made of synthetic resin, and the welding lining on the primary lining side is attached to the surface of the perforated hard plate fixed to the lower end of the anchor rod. Tunnel hanging rebar fitting part disuccinimidyl is coupled under aspects filling the perforations of the plate,
[3] In the structure [1] above, a tunnel suspension reinforcing bar metal fitting, which is filled with an adhesive in a cut made in the peripheral surface of the anchor rod, [4] with an anchor rod, for the primary lining of the tunnel. The primary lining side welding disc that is anchored to the tunnel primary lining surface and the heat welding waterproof sheet stretched from the primary lining side welding disc to the tunnel primary lining surface is heated to the corresponding portion of the disc. A secondary suspension side welding disc to be welded, and a tunnel suspension reinforcing bar metal fitting including a reinforcing rod supporting rod having the secondary coating side welding disc at the upper end, wherein the anchor rod is a circumference of a portion corresponding to a primary tunnel surface. The surface of the hard disk with perforations is fixed to the lower end of the anchor rod, and the part of the disk is filled with the perforations of the plate. The secondary lining side welding disc is bonded to the surface of the hard plate with perforations fixed to the upper end of the reinforcing rod support rod, and the disc part is filled in the perforations of the plate. Tunnel hanging rebar fittings,
[5] Primary welding lining side welding disc with anchor rod attached to the primary lining surface of the tunnel by anchoring the rod to the primary lining surface of the tunnel; A secondary lining side welding disc heat-welded to the corresponding disc corresponding part of the heat-welding waterproof sheet, and a tunnel suspension reinforcing bar metal fitting including a reinforcing rod supporting rod having the secondary lining side welding disc at the upper end. There, the anchor rod is a part of the tunnel primary lining surface corresponding part made of synthetic resin, the primary lining side welding disc, on the surface of the perforated hard plate fixed to the lower end of the anchor rod, a part of the disc The secondary lining-side welding disc, which is connected under the mode of being filled in the perforations of the plate, is a surface of the perforated hard plate fixed to the upper end of the rebar support rod, and a part of the disc is of the plate. Tunnel hanging rebar fitting coupled under aspects filled in the hole, and [6] above configuration (4)
In the above, the present invention relates to a tunnel suspension rebar metal fitting in which an adhesive is filled in a cut made in the peripheral surface of the anchor rod.

EXAMPLE Next, referring to the attached drawings showing an example of an embodiment of the present invention,
The present invention will be described.

In the figure, (1) is a tunnel hanging reinforcing bar metal fitting, and the hanging reinforcing bar metal fitting (1) is a welding wire disc (3) on the primary lining side with an anchor rod (2) on one surface side, and a reinforcing bar support rod (4) on one surface side.
The secondary lining side welding disc (5) with a
I have the ingredients. As shown in FIG. 1, the anchor rod (2) has a cut (7) in the peripheral surface corresponding to the surface of the primary tunnel lining (6). The rod (2) of the welding disc (3) on the primary lining side has a part of the peripheral surface corresponding to the surface of the primary lining (6) of the tunnel made of synthetic resin (21) (Fig. 2), or a cut. (7) Filled with adhesive (22) FIG. 3 may be used. Attach the required part of the anchor rod (2) to the synthetic resin (2
To achieve 1), the anchor rod (2) should be divided into the front and back from the required part, and the divided pieces should be joined together with a synthetic resin adhesive to integrate them. You can Of these three types of rods (2), the type with adhesive (22) -filled cuts (7) at a predetermined site is the largest type in terms of resistance to the reinforcing bar load, and the type with no adhesive-filled cuts (7) is the largest. Next to that is the second type (where the cuts (7) have the same depth, the same width, the rod (2) has the same diameter) and the predetermined portions are made of synthetic resin.

The welding disk (3) on the primary lining side is the anchor rod (2).
The disc (3) is partially connected to the surface of the hard plate (9) with perforations (8) fixed to the lower end in such a manner that the perforations (8) of the hard plate (9) are filled. The secondary lining side welding disc (5) is provided on the surface of the hard plate (11) with a perforation (10) fixed to the upper end of the reinforcing rod support rod (4) on the disc (5). It is preferred that the parts are joined together in a filled manner. Welding disc (3)
(5) is composed of a heat-welding composition. As the hard plates (9) and (11), those made of metal such as iron can be advantageously applied. The connection of the welding disc (3) to the hard plate (9) is
As long as the perforation (8) is filled with a part of the disc, the omission of the side corresponding to the surface of the primary lining (6) of the plate (9) is not prevented. The connection of the welding disc (5) to the hard plate (11) corresponds to the side opposite to the primary lining (6) face of the plate (11) in the case where the perforation (10) is partially filled with the disc. Don't prevent omitting the side.
Further, as shown in FIG. 4, a welding disc (5) may be formed only on the surface of the perforation (10) of the hard plate (11). In some cases, the secondary-side welding disc (5) may be one without the hard plate (11), that is, one that is not different from the conventional one. (12) shows the nonwoven fabric applied to the surface (6) of the primary lining.

The primary welding disc (3) is attached to the tunnel primary lining (6) surface with its anchor rod (2) anchored to the tunnel primary lining (6). This anchor ring may be performed by making the anchor rod into a bolt type and screwing the rod type anchor rod into a nut type insert (13) embedded in the tunnel primary lining (6).

On the surface opposite to the primary lining (6) of the primary lining side welding disc (3) attached to the surface of the tunnel primary lining (6), the primary lining (6) is placed on the disc (3). The heat-welding waterproof sheet (14) stretched over the surface is heat-welded according to a conventional method.

At the time of this welding, since the welding disc (3) is bonded to the surface of the hard plate (9) in a state where the holes (8) of the hard plate (9) are partially filled with the disc, the welding disc (3) ), Which is easily melted by heat, is protected by the hard plate (9) against collapse due to creep under the molten condition required for welding.

In this way, the solution of embodying the application of the primary lining-side welding disc that is easily melted by heat and adapted to the construction of a soft waterproof sheet is achieved by overcoming the problem of being easily melted down by hot air.

The welding disc (5) on the secondary lining side is always located at the portion corresponding to the welding disc (3) attached to the surface of the primary lining (6) of the waterproof sheet (14) stretched over the surface of the primary lining (6) of the tunnel. It is heat-welded according to the method. The reinforcing bar support rod (4) of the welding disk (5) on the secondary lining side has a hook-shaped rod (4 ') for supporting the reinforcing bar (not shown) of the secondary lining concrete. These rods (4) and (4 ') may be bolt type and may be connected by a nut type joint (15).

In this way, the tunnel suspension reinforcing bar metal fitting (1) is attached to a required portion of the tunnel primary lining (6).

During welding of the welding disc (5) on the secondary lining side, the disc (5)
As long as it is bonded to the surface of the hard plate (11) under a mode in which the holes (10) of the hard plate (11) are partially filled with the disk, even a disc that is easily melted by heat is necessary for welding. If the hard plate (1
Protected by 1).

The secondary lining side welding disc (5) does not necessarily have to be such a hard plate bonding type. The welding disc on the secondary lining side is different from the waterproof sheet (14) on the surface of the primary lining (6).
Since these discs and tarpaulins can be exposed to hot air while adjusting the relative positions in the free space accordingly, it is possible to easily avoid excessive hot air impact unlike the primary lining side welding discs (3). .

After the completion of construction of the secondary lining concrete on the primary lining (6) with the tunnel hanging rebar bracket (1), when the primary lining (6) slides against the secondary lining concrete due to an earthquake, the hanging rebar bracket ( 1) The anchor rod (2) is broken from the cut (7) at the peripheral surface of the portion corresponding to the tunnel primary lining (6) surface or the synthetic resin (21), and the welding disc (3) at the primary lining side is formed. ) Is disconnected from the primary lining of the tunnel (6).

Thus, the problem that the waterproof function of the welded portion of the waterproof sheet with respect to the welding lining on the primary lining side is damaged by an earthquake is solved.

Effect of the Invention According to the present invention as described above, when the tunnel primary lining equipped with the above-mentioned type of the tunnel suspension rebar fittings slides against the secondary lining concrete when an earthquake occurs, the primary lining side welding The problem of impairing the sealing function of the waterproof sheet at the portion welded to the disc is solved, and even if the welding disc on the primary lining side is likely to be melted by heat, it is possible to avoid collapse by melting with hot air. In the construction of the waterproof sheet with the specified specifications, it is embodied that the soft waterproof sheet is applied under the purpose.

Furthermore, in the present invention, the welding disc on the primary lining side is
Since the hard plate is bonded to the surface of the hard plate in such a manner that the holes of the hard plate are partially filled with the disc, even a soft disc is effectively reinforced by the hard plate. Therefore, when an earthquake occurs, the anchor of the welded disc is generated. The dividing effect due to the break of the rod or the breaking of the synthetic resin from the portion is improved, and the above-mentioned damage to the sealing function of the waterproof sheet is effectively achieved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIGS. 2 and 3 are front views showing different modifications of the anchor rod, and FIG. 4 is welding on the secondary lining side according to the present invention. FIG. 5 is a vertical sectional view showing a modified example of the disk, FIG.
It is a top view of the hard plate with perforations in the secondary lining side welding disc. (1)… Suspended rebar bracket (3)… Anchor rod (3)… Primary composite side welding disc (4)… Reinforcing rod support rod (5)… Secondary lining side welding disc (6)… Tunnel primary lining (7) ) ... Break (8) (10) ... Perforation (9) (11) ... Perforated hard plate (14) ... Waterproof sheet (21) ... Synthetic resin (22) ... Adhesive

Claims (6)

[Scope of utility model registration request] 1. A primary lining-side welding disc, which is attached to a tunnel primary lining surface by anchoring the rod to the tunnel primary lining with an anchor rod, and the tunnel primary lining surface from above the primary lining side welding disc. Of the heat-welding waterproof sheet stretched over the secondary welding side welding disc to be heat-welded to the corresponding disc, and a tunnel suspension rebar including a rebar supporting rod having the secondary coating side welding disc at the upper end. A metal fitting, wherein the anchor rod has a cut on the peripheral surface of the tunnel primary lining surface corresponding portion, the primary lining side welding disc is the surface of the perforated hard plate fixed to the anchor rod lower end, A tunnel suspension reinforcing bar metal fitting in which a disc part is connected under a state in which a part of the disc is filled in the perforation of the plate. 2. A primary lining-side welding disc, which is attached to the tunnel primary lining surface by anchoring the rod to the tunnel primary lining with an anchor rod, and the tunnel primary lining surface from above the primary lining side welding disc. Of the heat-welding waterproof sheet stretched over the secondary welding side welding disc to be heat-welded to the corresponding disc, and a tunnel suspension rebar including a rebar supporting rod having the secondary coating side welding disc at the upper end. A metal fitting, wherein the anchor rod has a portion corresponding to the tunnel primary lining surface made of synthetic resin, and the welding lining on the primary lining side is a disc with a perforated hard plate fixed to the lower end of the anchor rod. Tunnel suspension rebar fittings joined together in a manner in which the perforations of the plate are partially filled. 3. The tunnel suspension rebar fitting according to claim 3, wherein an adhesive is filled in a cut formed in the peripheral surface of the anchor rod. 4. A primary lining-side welding disc, which is attached to the primary lining surface of the tunnel by anchoring the rod to the primary lining of the tunnel with an anchor rod, and the primary lining surface of the tunnel from above the welding disc of the primary lining side. Of the heat-welding waterproof sheet stretched over the secondary welding side welding disc to be heat-welded to the corresponding disc, and a tunnel suspension rebar including a rebar supporting rod having the secondary coating side welding disc at the upper end. A metal fitting, wherein the anchor rod has a cut on the peripheral surface of the tunnel primary lining surface corresponding portion, the primary lining side welding disc is the surface of the perforated hard plate fixed to the anchor rod lower end, A part of the disk is joined under the mode in which it is filled in the perforations of the plate, and the secondary lining side welding disk is attached to the surface of the perforated hard plate fixed to the upper end of the reinforcing bar support rod. There tunnel hanging rebar fitting coupled under aspects filling the perforations of the plate. 5. A primary lining-side welding disc, which is attached to the primary lining surface of the tunnel by anchoring the rod to the primary lining of the tunnel with an anchor rod, and the primary lining surface of the tunnel from above the welding disc of the primary lining side. Of the heat-welding waterproof sheet stretched over the secondary welding side welding disc to be heat-welded to the corresponding disc, and a tunnel suspension rebar including a rebar supporting rod having the secondary coating side welding disc at the upper end. A metal fitting, wherein the anchor rod has a portion corresponding to the tunnel primary lining surface made of synthetic resin, and the welding lining on the primary lining side is a disc with a disc Part is joined under the mode of filling the perforations of the plate, the secondary lining side welding disc, the surface of the perforated hard plate fixed to the upper end of the rebar support rod, the disc part Tunnel hanging rebar fitting coupled under aspects filling the perforations in the plate. 6. The tunnel suspension rebar metal fitting according to claim 6, wherein an adhesive is filled in a cut formed in the peripheral surface of the anchor rod.