JP2015175191A - Water cutoff structure of concrete form support part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water leakage going along a support bit 16 and the inside of an adjustment pipe 24 from the earth retaining wall side.SOLUTION: A support bit 16 is provided with a tap screw part 18 on one end and provided with a connection screw part 22 on the other end, and the tap screw part 18 is screwed in and fixed to an earth retaining wall material 12 and the connection screw part 22 penetrates through a waterproof sheet 28 covering the earth retaining wall material 12 and also penetrates through a water cutoff ring 26 brought into close contact with the periphery of the through-hole. An adjustment pipe 24 for supporting a concrete form 34 penetrates through the water cutoff ring 26, and is connected to the connection screw part 22 of the support bit 16. A press mass 46 is provided inside the adjustment pipe so as to block up its screw hole. Thus, water leakage can be reliably prevented even against pressure of water infiltrating by going along a screw groove of the connection screw part 22.

Description

  The present invention relates to a water stop structure for a concrete formwork support part that can prevent water flowing from the earth retaining wall side to the concrete wall side when the concrete wall is formed along the earth retaining wall.

  When a concrete wall is formed along the earth retaining wall, a supporting bit is fixed to H steel of the earth retaining wall, and a form frame supporting metal is connected to this to support the concrete form frame. In that case, a waterproof sheet is arranged between the earth retaining wall and the concrete wall. This is to prevent the underground water pressure from being applied to the concrete wall from the earth retaining wall side and causing water leakage to the concrete wall. At this time, the support bit penetrates the waterproof sheet. A water stop device for preventing water leakage from the penetrating portion has been developed and put into practical use (Patent Document 1) (Patent Document 2).

JP 2009-41313 A JP2013-60781A

The known prior art has the following problems to be solved.
The support bit is connected to the formwork support fitting through an adjustment pipe, a screw rod, or the like. In Patent Literature 1 and the like, water leakage at the connecting portion between the support bit and the adjustment screw is prevented by applying butyl rubber to the support bit and connecting it to the adjustment pipe. However, the groundwater pressure applied to the earth retaining wall constructed at a depth of several tens of meters is extremely high, and there is a need for a waterstop structure that can withstand higher pressures.
In order to solve the above-described problems, an object of the present invention is to provide a water stop structure for a concrete formwork support portion in which a connection structure between a support bit and an adjustment pipe is improved.

  The following configurations are means for solving the above-described problems.

<Configuration 1>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A press lump with both sides pressed and fixed in the middle is arranged, one end penetrates the water stop ring and is connected to the threaded end of the support bit, and the other end supports the concrete formwork A waterproof support member for concrete formwork, characterized in that a member for connecting is connected.

<Configuration 2>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A partition wall left by cutting from both ends is provided, one end passes through the water stop ring and is connected to the threaded end of the support bit, and the other end is a member for supporting the concrete formwork A waterproof support member for concrete formwork, characterized in that is connected.

<Configuration 3>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A partition block fixed by partial compression is arranged in the middle part, one end penetrates the water stop ring and is connected to the threaded end of the support bit, and the other end is for supporting the concrete formwork A waterproof support member for concrete formwork, wherein the member is connected.

<Configuration 4>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The water stop screw connected to the connecting screw end of the support bit is
A cap nut portion and a screw portion, and the cap nut portion passes through the water stop ring and is connected to the screw portion end of the support bit, and the screw portion is adjusted to support the concrete formwork. A waterproof support member for a concrete formwork, wherein a pipe is connected.

<Configuration 5>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
It is divided into two in advance, joined to the intermediate part via a partition plate, one end penetrates the water stop ring and is connected to the threaded end of the support bit, and the other end is provided with a concrete formwork A waterproof support member for concrete formwork, characterized in that a member for supporting is connected.

<Configuration 6>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
One end is connected to the threaded end of the support bit through the water stop ring, and the other end is connected to a member for supporting the concrete formwork via a flanged screw. Waterproof support member for concrete formwork.

<Configuration 7>
The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
It is divided in advance and has a structure that is connected by a screw with a flange having screw parts at both ends, one end passing through the water stop ring and connected to the screw part end of the support bit, and the other end Is a waterproof support member for concrete formwork, characterized in that a member for supporting the concrete formwork is connected.

<Configuration 8>
The adjustment pipe is divided into two in advance, and has a structure that is connected by a flanged screw having a threaded portion at both ends, and a sealing material that covers the flange of the flanged screw is provided at the connecting portion. The waterproof support member for a concrete form according to Configuration 7, characterized in that:

<Configuration 9>
The adjusting pipe is divided into two in advance, and has a structure in which both ends are connected by a screw with a flange having a threaded portion, and the flange of the flanged screw is joined to one adjusting pipe. The waterproof support member for a concrete form according to Configuration 7 or 8.

<Configuration 10>
The adjustment pipe is divided into two parts in advance and is connected by a flanged screw having a threaded portion at both ends, and a resin ring is sandwiched between the flanged screw and one adjustment pipe. The waterproof support member for concrete formwork according to Configuration 7 or 8, wherein

<Configuration 11>
The adjustment pipe is divided into two parts in advance and is connected by a flanged screw with threaded parts at both ends, and a resin plug is packed at the end of the threaded part of the flanged screw inside the adjustment pipe. The waterproof support member for concrete formwork according to Configuration 7 or 8, wherein
<Configuration 12>
A raised portion is formed around the press lump of the adjustment pipe, a pressure washer is fixed to the outer peripheral surface near one end, and a tool hook for attaching a nut turning tool is provided near the other end. The waterproof support member according to Configuration 1, wherein the waterproof support member is provided.

<Effect of Configuration 1>
Since both sides such as metal pieces are pressed and fixed, processing is easy and the adjustment pipe is not deformed.
<Effect of Configuration 2>
The number of parts is small, and a strong water stop wall can be formed.
<Effect of Configuration 3>
If a partition block is inserted into the adjustment pipe and is compressed and fixed, a strong water blocking wall can be easily formed.
<Effect of Configuration 4>
A water stop screw having a cap nut portion and a screw portion can be attached to the support bit to reliably prevent water leakage.
<Effect of Configuration 5>
Since the adjustment pipe divided into two is joined via the partition plate, the water stop wall is provided at an arbitrary position, and the adjustment pipe can also have an arbitrary length.
<Effect of Configuration 6>
Water is not leaked from the inside of the adjustment pipe because water is stopped by the flanged screw.
<Effect of Configuration 7>
The flanged screw can function as a screw rod that supports the concrete formwork.
<Effect of Configuration 8>
The sealing material can enhance the water stop effect of the flange portion of the flanged screw.
<Effect of Configuration 9>
A flanged screw can be integrated into one adjustment pipe.
<Effect of Configuration 10>
The water stop effect of the flange can be enhanced by the resin ring.
<Effect of Configuration 11>
When screwing the flanged screw into the adjustment pipe, the water can be stopped by filling the resin plug.
<Effect of Configuration 12>
A raised portion is formed around the adjustment pipe, and serves as a mark for subsequent processing operations.

It is a partial longitudinal cross-sectional view of the waterproof support part of the conventional concrete formwork, (a) is a general view (b) is a principal part longitudinal cross-sectional view. (A) is the adjustment pipe 24 provided with the partition wall 40, (b) is its use state, (c) is a modification thereof, and (d) is the partition block 44 provided in the reduced diameter portion 42 of the adjustment pipe 24. (E) shows an example in which a press lump 46 is formed inside the adjusting pipe 24, (f) shows the state of use thereof, and both show a longitudinal sectional view of the adjusting pipe 24. (A) is provided with a partition plate 48, (b) is used, (c) is provided with a flanged screw 50, (d) and (e) are each used. 3 is a longitudinal sectional view of an adjustment pipe 24. FIG. (A)-(e) is a longitudinal cross-sectional view of the Example which strengthens the water stop effect of the screw 50 with a flange. It is the longitudinal cross-sectional view of the example which uses the water stop screw 62 which has the cap nut part 64 and the thread part 66, (a) is the decomposition | disassembly longitudinal cross-sectional view, (b) is the longitudinal cross-sectional view after an assembly, (c) is The longitudinal cross-sectional view of the example which uses the water stop screw 62 which attached the pressure washer 36, (d) is a longitudinal cross-sectional view which shows the example which abbreviate | omitted the adjustment pipe 24. FIG. It is a partial longitudinal cross-sectional view of the waterproof support part of the concrete formwork which uses the example of FIG.5 (b). It is a partial longitudinal cross-sectional view of the waterproof support part of the concrete formwork which uses the example of FIG.5 (d). It is a longitudinal cross-sectional view which shows the actual use condition of the adjustment pipe 24 of Example 3. FIG. It is the elements on larger scale of FIG.

Hereinafter, embodiments of the present invention will be described in detail for each example.
FIG. 1 is a partial longitudinal sectional view of a waterproof support portion of a conventional concrete formwork 34. (A) is a general view (b) is a longitudinal section of the main part.
The example of this figure is described in the above-mentioned patent document and the like, and is a structure for constructing a concrete wall in order to construct an underground structure in a deep underground. The retaining wall material 12 is a temporary wall made of concrete or mortar, and is supported by H steel 14 or the like. A tap hole is provided in the H steel 14, and the tap screw portion 18 of the support bit 16 is screwed in. And the waterproof sheet 28 is attached so that the earth retaining wall material 12 whole may be covered.

  The support bit 16 is used to support and fix the concrete mold 34 so as to face the earth retaining wall material 12. For this reason, a part of the waterproof sheet 28 is broken and the support bit 16 is penetrated. The concrete mold 34 is supported by the support bit 16, the adjustment pipe 24, the screw rod 30, and the mold support bracket 32. Concrete (not shown) is poured between the retaining wall material 12 and the concrete mold 34 to form a concrete wall surrounding the underground structure.

  The water stop ring 26 is in close contact with the periphery of the through hole of the waterproof sheet 28 and sealed with butyl rubber or the like to prevent water leakage at this portion. In the illustrated example, a metal pressure washer 36 is fixed to the outer periphery of the adjustment pipe 24. The pressure washer 36 strongly presses the water stop ring 26 against the waterproof sheet 28. The end of the adjustment pipe 24 is connected to the connecting screw portion 22 of the support bit 16.

  After the concrete wall is completed, the waterproof sheet 28 plays an important role in preventing the penetration of groundwater into the concrete wall side. A number of through holes are formed in the waterproof sheet 28 by the support bit 16. However, since the water stop ring 26 and the waterproof sheet 28 are in close contact with each other through a butyl rubber or the like, the through holes of the waterproof sheet 28 There is no possibility that water leaks along the outside of the adjusting pipe 24.

  However, the H steel 14 is arranged at regular intervals with respect to the retaining wall material 12, and the groundwater that oozes out from the wall between the H steel 14 is a waterproof sheet as shown by the arrow in FIG. There is a risk of entering the inside of the adjusting pipe 24 from the through hole 28 through the periphery of the connecting screw portion 22. When groundwater enters the inside of the adjustment pipe 24, water leaks into the concrete wall through the screw rod 30 shown in FIG. In order to prevent this, in the above-mentioned patent documents and the like, a sufficient amount of butyl rubber is applied to the outer peripheral surface of the connecting screw portion 22 to seal it.

If the amount of butyl rubber applied is insufficient, water leakage will occur. At the construction site, an operation of attaching a large number of support bits 16 to a large number of H steels 14 arranged on the wall surface of the retaining wall material 12 is required. Therefore, further improvement in workability is required for the operation of attaching the water stop ring 26 and tightening the adjustment pipe 24 while applying butyl rubber to the connecting screw portion 22. There is also a need for a structure that can withstand high groundwater pressure at a depth of several tens of meters.

  Therefore, in the present invention, in order to prevent the water from leaking to the screw rod 30 side through the adjustment pipe 24 as described above, a wall structure for stopping water is provided in the adjustment pipe 24 portion. Hereinafter, embodiments of the present invention will be described in order.

  2A is a diagram in which a partition wall 40 is provided on the adjustment pipe 24, FIG. 2B is a usage state thereof, FIG. 2C is a modified example thereof, and FIG. 2D is a partition lump in the reduced diameter portion 42 of the adjustment pipe 24. (E) shows a press lump 46 formed inside the adjustment pipe 24, (f) shows the state of use thereof, and both show a longitudinal sectional view of the adjustment pipe 24. In each of the adjustment pipes, an internal thread is formed on the inner surface in the final process. However, since the drawing becomes complicated, the illustration of the internal thread is omitted in all drawings.

  In FIG. 2A, the adjusting pipe 24 includes a partition wall 40 left by cutting from both ends of the iron bar. The inner surface is threaded for screwing the support bit 16 and the threaded rod 30 (FIG. 1). The adjustment pipe 24 is connected to the connecting screw portion 22 of the support bit 16 as shown in FIG. When the partition wall 40 is formed by cutting with a drill having substantially the same diameter as the screw hole of the adjustment pipe 24, the cross-sectional shape as shown in FIG. Groundwater that travels on the outer peripheral surface of the connecting screw portion 22 on the support bit 16 side can be reliably blocked by the partition wall 40. This structure is advantageous in that the adjustment pipe 24 is robust and the number of parts is small.

  In the adjusting pipe 24 of FIG. 2 (d), a partition block 44 fixed by partial compression is disposed in the middle part. The partition block 44 is a metal block, a hard plastic block, or a rubber block. The partition block 44 is positioned, and the adjustment pipe 24 is press-compressed. Thereby, the partition block 44 can be fixed reliably. Manufacturing is easier and the manufacturing cost is lower than that of the first embodiment. Moreover, a strong water blocking wall can be easily formed.

  In FIG. 2 (e), a press lump 46 in which both side surfaces are pressed and fixed to an intermediate portion of the adjustment pipe 24 is arranged. For example, a metal lump that is equal to or more flexible than the material of the adjustment pipe 24 is disposed inside the adjustment pipe 24. When pressure is applied from both openings of the adjustment pipe 24 with a press rod, the metal mass is deformed and a wall is formed inside the adjustment pipe 24. A press lump 46 is thus obtained. This embodiment is easy to process and robust. In addition, the overall cost is low. In addition, as shown in FIG.2 (f), the protruding part 25 may be formed in the outer surface of the adjustment pipe 24 by press. When the adjustment pipe 24 is connected to the support bit 16, a tool such as an electric nut driver is attached to the tool hook portion 68 shown in the drawing. The tool hook 68 is compressed and shaped into a hexagon as shown on the right side of the figure. Further, a pressure washer 36 is attached to the opposite side. At this time, when the raised portion 25 is used as a mark, there is an effect that the compression molding side and the attachment position of the pressure washer 36 are not mistaken.

  In FIG. 3, (a) shows a state in which a partition plate 48 is provided, (b) shows a use state thereof, (c) shows a case in which a flanged screw 50 is provided, and (d) and (e) show their use state. Both are longitudinal sectional views of the adjusting pipe 24.

  In FIG. 3A, the adjustment pipe 24 is divided into two in advance. A partition plate 48 is disposed in the middle portion. These are joined linearly as shown in FIG. It is good to join by welding etc. The adjustment pipe 24-1 is connected to the connecting screw portion 22 of the support bit 16, and the adjustment pipe 24-2 is connected to a screw rod 30 (FIG. 1) for supporting the concrete mold 34 (FIG. 1). In this embodiment, the adjusting pipe 24-2 can be selected to have an arbitrary length as required. Further, there is an effect that the water blocking wall can be arranged at an arbitrary position.

  FIG. 3C shows an example in which a flanged screw 50 is used. Both ends of the flanged screw 50 are provided with male screw portions that can be screwed into and connected to the adjusting pipe 24. The outer diameter of the flange is at least larger than the inner diameters of the adjusting pipe 24-1 and the adjusting pipe 24-2. As shown in FIG. 3D, the adjustment pipe 24-1 is connected to the connecting screw portion 22 of the support bit 16, and the adjustment pipe 24-2 is a screw rod 30 for supporting the concrete formwork 34 (FIG. 1). (Fig. 1).

  As shown in FIG. 3E, if the male thread 51 of the flanged screw 50 is sufficiently long, the flanged screw 50 can be directly connected to the mold support 32 (FIG. 1). If the flange 50 of the flanged screw and the end face of the adjustment pipe 24-1 are in close contact with each other without any gap, the water can be completely stopped here. However, in order to obtain a more reliable water stop effect, the following structure may be employed.

4 (a) to 4 (e) are longitudinal sectional views of an embodiment for enhancing the water stop effect of the flanged screw 50. FIG.
The adjusting pipe 24-1 and the adjusting pipe 24-2 in FIG. 4A are connected via a flanged screw 50. And the sealing material 52 is provided in the connection part so that the flange of the flanged screw 50 may be covered. Thereby, the water stop of the junction part of a flange and the adjustment pipe of the both sides can be strengthened. For the sealing material 52, butyl rubber, other adhesives, or the like can be used.

  In the example of FIG. 4B, the adjustment pipe 24-1 and the flange of the flanged screw 50 are joined by a welding material 54. An adhesive may be used instead of welding. Thereby, the connection screw part 22 of the support bit 16 can be completely enclosed by a waterproof wall.

  In the example of FIG. 4C, the adjustment pipe 24-1 and the male thread portion 51 of the flanged screw 50 are bonded by an adhesive 56. The adhesive 56 can surely exert a water stop effect.

  In the example of FIG. 4D, a resin ring 58 is sandwiched between the flange of the flanged screw 50 and one adjustment pipe 24-1. The resin ring 58 is preferably a rubber or plastic O-ring or washer. The resin ring 58 can be realized by using existing parts.

  In the example of FIG. 4 (e), a resin plug 60 is packed at the end of the male screw portion of the flanged screw 50 screwed into the adjustment pipe 24-1. The resin plug 60 may be inserted at the same time when the flanged screw 50 is attached. When water pressure is applied from the threaded portion side of the support bit 16, the resin stopper 60 is pressed against the flanged screw 50, so that the water stoppage is further increased.

  FIG. 5 is a longitudinal sectional view of an example using a water stop screw 62 having a cap nut portion 64 and a threaded portion 66, (a) is an exploded longitudinal sectional view thereof, (b) is a longitudinal sectional view after assembly, c) is a longitudinal sectional view of an example in which a water stop screw 62 to which a pressure washer 36 is attached is used, and (d) is a longitudinal sectional view showing an example in which the adjustment pipe 24 is omitted. 6 and 7 are longitudinal sectional views showing a state in which the concrete mold 34 is supported by the members of this embodiment.

  As shown in FIG. 5A, the water stop screw 62 is connected to the end of the connection screw portion 22 of the support bit 16. The cap nut portion 64 is disposed so as to penetrate the water stop ring 26 (FIG. 1), and is connected to the connecting screw portion 22 of the support bit 16, similarly to the adjustment pipe 24 shown in FIG. An adjustment pipe 24 for supporting the concrete mold 34 is connected to the screw portion 66. The state after these are connected is as shown in FIG. 5 (b) and FIG.

  FIG. 5C shows a longitudinal sectional view of the water stop screw 62 to which the pressure washer 36 described in FIG. 1 is attached. With this pressure washer 36, the water stop ring 26 is pressed against the waterproof sheet 28 as shown in FIG. When assembled as shown in FIG. 6, the cap nut portion 64 can block water flowing in through the connecting screw portion 22 of the support bit 16.

  As shown in FIGS. 5D and 7, if the threaded portion 66 is sufficiently long, it can be connected to the mold support bracket 32 without using the adjustment pipe 24.

FIG. 8 is a longitudinal sectional view showing an actual use state of the adjusting pipe 24 of the third embodiment, and FIG. 9 is a partially enlarged view thereof.
In FIG. 8, the adjustment pipe 24 has one end connected to the support bit 16 and the other end connected to the screw rod 30. This state is not different from a known adjustment pipe. Here, as shown in FIG. 9, in the adjustment pipe 24, a strong wall that closes the screw hole is formed by the press lump 46. A pressure washer 36 fixed to the adjustment pipe 24 presses the water stop ring 26 against the waterproof sheet 28.

Conventionally, for example, butyl rubber is applied around the connection screw portion 22 of the support bit 16. This prevents water penetrating the adjustment pipe 24 side through the thread groove of the connecting screw portion 22. However, in this embodiment, the running water can be completely shut off by the press lump 46. The adjustment pipe 24 has the same dimensions as the conventional product and the handling is the same as the conventional product. Therefore, there is an effect that the adjustment pipe 24 can be used as it is by the conventional method.
Actually, the water pressure test pump was connected to the test data, and the following water pressure was continued for the following time to confirm the presence or absence of water leakage. The material is an adjustment pipe made of steel having an inner diameter of 10 mm. A soft iron lump is inserted into the adjustment pipe and pressurized from both sides to form a water-impervious wall by a press lump 46 as shown in FIG. Is. As a result, it was confirmed that there was no water leakage in any of the plurality of samples. Similar results were obtained for the partially compressed water barrier walls. It can be said that these can withstand a particularly high water pressure and the manufacturing cost can be kept low as compared with other embodiments.
(1) Raise the water pressure to 0.5Mpa and leave it for 24 hours to check for water leakage.
(2) Raise the water pressure to 1.0Mpa and leave it for 24 hours to check for water leakage.
(3) Raise the water pressure to 1.5Mpa and leave it for 10 minutes to check for water leakage.

12 Earth retaining wall material 14 H steel 16 Support bit 18 Tap screw portion 20 Tool hook portion 22 Connection screw portion 24 Adjustment pipe 25 Raised portion 26 Water stop ring 28 Waterproof sheet 30 Screw rod 32 Formwork support bracket 34 Concrete formwork 36 Pressure washer 40 Partition wall 42 Reduced diameter portion 44 Partition lump 46 Press lump 48 Partition plate 50 Flange screw 51 Male thread portion 52 Sealing material 54 Welding material 56 Adhesive 58 Resin ring 60 Resin stopper 62 Stop screw 64 Cap nut portion 66 Screw Part 68 Tool hanging part

Claims (12)

The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A press lump that is fixed so as to close the screw hole of the adjustment pipe by pressing both side surfaces in the middle part, one end penetrates the water stop ring and is connected to the screw part end of the support bit, A waterproof support member for concrete formwork, characterized in that a member for supporting the concrete formwork is connected to the other end. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A partition wall left by cutting from both ends is provided, one end passes through the water stop ring and is connected to the threaded end of the support bit, and the other end is a member for supporting the concrete formwork A waterproof support member for concrete formwork, characterized in that is connected. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
A partition block fixed by partial compression is arranged in the middle part, one end penetrates the water stop ring and is connected to the threaded end of the support bit, and the other end is for supporting the concrete formwork A waterproof support member for concrete formwork, wherein the member is connected. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The water stop screw connected to the connecting screw end of the support bit is
A cap nut portion and a screw portion, and the cap nut portion passes through the water stop ring and is connected to the screw portion end of the support bit, and the screw portion is adjusted to support the concrete formwork. A waterproof support member for a concrete formwork, wherein a pipe is connected. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
It is divided into two in advance, joined to the intermediate part via a partition plate, one end penetrates the water stop ring and is connected to the threaded end of the support bit, and the other end is provided with a concrete formwork A waterproof support member for concrete formwork, characterized in that a member for supporting is connected. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
One end is connected to the threaded end of the support bit through the water stop ring, and the other end is connected to a member for supporting the concrete formwork via a flanged screw. Waterproof support member for concrete formwork. The supporting bit having a tapped screw portion at one end and a connecting screw portion at the other end is fixed by being screwed into the retaining wall material, and the connecting screw portion covers the retaining wall material. And through a water-stop ring closely attached to the periphery of the through-hole,
The adjustment pipe connected to the end of the connecting screw of the support bit is
It is divided in advance and has a structure that is connected by a screw with a flange having screw parts at both ends, one end passing through the water stop ring and connected to the screw part end of the support bit, and the other end Is a waterproof support member for concrete formwork, characterized in that a member for supporting the concrete formwork is connected.   The adjustment pipe is divided into two in advance, and has a structure that is connected by a flanged screw having a threaded portion at both ends, and a sealing material that covers the flange of the flanged screw is provided at the connecting portion. The waterproof support member for concrete formwork according to claim 7.   The adjusting pipe is divided into two in advance, and has a structure in which both ends are connected by a screw with a flange having a threaded portion, and the flange of the flanged screw is joined to one adjusting pipe. The waterproof support member for a concrete form according to claim 7 or 8.   The adjustment pipe is divided into two parts in advance and is connected by a flanged screw having a threaded portion at both ends, and a resin ring is sandwiched between the flanged screw and one adjustment pipe. The waterproof support member for concrete formwork according to claim 7 or 8, wherein   The adjustment pipe is divided into two parts in advance and is connected by a flanged screw with threaded parts at both ends, and a resin plug is packed at the end of the threaded part of the flanged screw inside the adjustment pipe. The waterproof support member for a concrete form according to claim 7 or 8.   A raised portion is formed around the press lump of the adjusting pipe, a pressure washer is fixed to the outer peripheral surface near one end, and a tool hook for attaching a nut turning tool is provided near the other end. The waterproof support member according to claim 1, wherein the waterproof support member is provided.

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