JP2014159672A - Wale back-filling form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-handle wale back-filling form which facilitates installation when back-filling concrete is placed in a gap between an earth retaining wall and a wale, and which can be carried out in a block shape without being chipped in removal.SOLUTION: A wale back-filling form 1 includes a side surface part that abuts on earth retaining 5, a side surface part that abuts on a wale 6, a hook 2 that is latched to an upper end of a flange of the wale 6, and a bottom surface part that continues into both the side surface parts. The bottom surface part is bent in accordance with a gap between the earth retaining 5 and the wale 6 to configure both the side surface parts.

Description

  The present invention relates to a mold used for filling the gap, in which a gap between the hill support and the erection is filled with a solidifying material such as mortar or concrete.

  Conventionally, multiple sheet piles that have been driven into the soil during earth retaining work are mountain retaining materials constructed to excavate the ground to prevent collapse due to earth pressure and water pressure. Ideally, it should be driven continuously. In the case where the flank made of H steel is placed on the front surface of the ideally piled sheet pile, the width and depth of the gap between each sheet pile and the flank outer flange are all Since it is constant, it is also possible to manufacture the formwork in advance by factory production or the like, attach the formwork on site, and place the backfill concrete.

  However, depending on the soil layer below where the sheet pile is placed, the sheet pile is often serpentine or bent, resulting in irregularity. Since the width and depth of the gaps between them are not constant, the formwork for placing backfilled concrete is manufactured according to the width and depth corresponding to each gap by site construction, and attached to the back. The concrete was cast in place (Fig. 5).

  For this reason, a method of placing concrete in a bag (Patent Document 1) and a formwork (Patent Document 2) in which the bottom surface can be expanded and contracted with a resin mold have been proposed.

JP 2003-166242 A JP 2005-76232 A

In the conventional placing method, since the formwork was manufactured in accordance with the gap between the retaining wall and the erection, it took time to install the formwork.
In addition, the cast concrete adhered to the retaining wall and flank, and it took time and effort to remove it.
The above-mentioned problem does not occur in the method of placing concrete in a bag, but it is necessary to assemble the brackets that support the bag, etc. In the case of resin molds, work to attach the support plates that support the resin molds But it was necessary and time consuming.
Furthermore, when concrete is packed in a bag or placed in a resin mold, it is difficult to separate the concrete from the bag or the resin mold at the time of removal, and the waste cannot be separated.

  An object of the present invention is to facilitate the installation and removal of the backfilled concrete in the gap between the mountain retaining wall and the flank, and to facilitate the separation and disposal at the time of removal.

The flank back-filling form of the present invention that solves the above-described problems is continuous with the side surface that is in contact with the inside of the retaining wall, the side surface that is in contact with the outer flange of the flank, and both side surfaces. A bottom surface portion, the bottom surface portion being mounted on a bracket that supports the flank, and connected to a side surface that is in contact with an outer flange of the flank, and an upper end portion of the flange Hook hooked on the
It has an opening stop spanning the flange on the outer side of the erection and the side surface part to be in contact with the inner side of the retaining wall.
The mold is made of a lath material.
Moreover, a partition is provided along the axial direction of the flank of the mold.

Since the flank backfill form of the present invention is as described above, the following effects can be obtained.
<1>
Labor saving and simplification can be made in the time and effort required to manufacture the formwork in accordance with the gap between the mountain retaining wall and the flank.
<2>
By providing a partition, it is easier to remove the back-filled concrete.
<3>
Concrete and formwork can be easily separated, waste can be easily separated, and the formwork can be reused.

The implementation condition figure which shows one suitable Example of this invention. The figure which shows the assembly procedure of this invention. Sectional drawing which shows the flank cross-sectional direction of this invention. The principal part perspective view of this invention. The figure which shows the assembly condition of this invention which has arrange | positioned the steel bar on the bracket and the inside of the retaining ring The figure which arranged the waterproof paper on the bottom and side of the formwork of the present invention Fig. 4 is a diagram showing the conventional state of implementation of upset and backfilled concrete.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a flank back-filling form of the present invention will be described in detail with reference to the drawings.

<1> Overall configuration.
As shown in FIG. 1, the mold 1 is placed on the bracket 7 along the side surface of the upset 6 on the side of the hill 5, and the upset 6 is placed on the side of the mold 1 and the hook 2 is hooked on the flange of 6. Stop. The side face on the mountain retaining side of the mold 1 and the side face on the flank 6 side are connected by the opening stop 3. Further, a partition 4 is provided at an appropriate place in the axial direction of the flank in the mold, and back-filled concrete 8 is placed on the mold 1.
<2> Assembling the formwork.

  The assembly of the mold will be described with reference to FIG. One end of the flat lath material used as the mold 1 in FIG. 2A is bent so as to follow the upset 6 as shown in FIG. 2B.

  Although the other end may be bent in accordance with the gap between the ledge 5 and the erection 6, since the gap between the dome 5 and the erection 6 is not a regular width, as shown in FIG. If the mold 1 is placed along the flange 6 without bending the other end, and pressed in the direction of the intersection of the pile 5 and the bracket 7 (direction indicated by the arrow), the width of the mold 1 is reduced. It can be adjusted to the gap between the Yamadome 5 and the uprising 6.

  As shown in FIG. 2 (d), the hook 2 is attached to the side surface of the erection 6 of the mold 1 installed on the mountain retaining side, and is hooked on the flange of the erection 6. As shown in FIG. 3, the hook 2 and the mold 1 may be attached to the end of the mold 1 by spot welding, as shown in FIG. 3. Therefore, the attachment method is not particularly limited.

  As shown in FIG. 2 (f), one end of the locking stopper 3 is attached to the side surface of the mold 1 that abuts the inside of the pile 5, and the multi-end is erected and attached to the flange 6. As shown in FIG. 3, the attachment to the side surface of the mold 1 that contacts the inside of the pile 5 is not limited to surface bonding as shown in FIG. 3, but may be spot welding. The attachment of the other end of the opening stop 3 to the flange of the protuberance 6 may be performed by attaching or welding to the hook 2 so as to double the hook 2 as shown in FIG. Alternatively, it may be erected and hooked on the flange of 6.

The partition 4 processed into the gap width between the dome 5 and the upset 6 is installed in the mold 1 as shown in FIG. In this case, the partition 4 is preferably provided in a portion where the earth retaining wall 5 and the formwork 2 do not contact. Further, the partition 4 is not limited to the lath material of the mold 1 but may be wood coated with a release agent as long as separation from the backfill concrete 8 is easy.
<Construction of backfill concrete>

  After the installation is completed, the backfill concrete 8 is placed in the mold 1 as shown in FIG. At this time, both ends of the partition 4 are bent in FIG. 2 (g) so that they can stand on their own, but they may be inserted into the concrete when placing back-filled concrete without bending both ends.

  If the backfill concrete is solidified, what is the earth pressure applied to the Yamadome 5? It is transmitted to the abdomen 6 and the cut beam 9 through the backfill concrete 8 (FIG. 4).

  Later, when removing the upset, the upset 6 back-filled concrete 8 is trimmed by the lath mold 1 and can be removed together with the lath form. Moreover, the partition 4 is installed in the mold 1 also in the axial direction of the upset 6, and the axial direction can also be cut off, so that it can be easily removed as one lump without being crushed by a breaker.

  Moreover, separation of the lath mold 1 and the backfill concrete 8 is easy, separation and disposal are easy, and the mold 1 can be reused.

  In the embodiment, a lath material is used for the mold 1. However, the present invention is not limited to the lath material, and any plastic material can be used as long as it can be easily deformed and separated from the concrete.

Further, when the mounting interval of the bracket 7 that supports the erection 6 is long and there is a possibility that the mold 1 may hang down, as shown in FIG. 5, a steel rod 10 is arranged on the bracket 7 and the mold is placed thereon. It is preferable to mount the frame 1.
Further, with respect to the side surface of the mold 1, when the earth retaining plate 5 is a horizontal sheet pile using H steel as a parent pile, the steel rod 10 is attached to the side surface of the mold 1 when the interval between the parent piles is a long span. You may arrange in.

  Further, when the backfilling concrete 8 has high fluidity and may leak from the mesh of the mold 1, as shown in FIG. 6, a waterproof paper is used on the outer periphery of the mold 1 to prevent the backfilling concrete 8 from leaking. If 11 is arrange | positioned, it can prevent that the backfill concrete 8 leaks from the formwork 1. FIG. At the time of dismantling, the formwork 1 is cut off, and the water-stopping paper 11 does not adhere to the backfill concrete 8 and the separation process becomes easy.

In addition, when the waterproof paper 11 is arranged inside the mold 1 in order to prevent the waterproof paper 11 from dripping because the mounting interval of the brackets 7 is long, the waterproof water treated so as not to adhere the backfill concrete 8. By using paper 11, it is preferable to prevent adhesion of the backfill concrete 8.
In addition, the material which has the function which can prevent not only the waterproofing paper 11 but the backfill concrete 8 can be prevented as long as it can prevent leakage.

1 Formwork 2 Hook 3 Opening stop 4 Partition 5 Earth retaining 6 Raising 7 Bracket 8 Backfill concrete

Claims (3)

A formwork comprising a side part to be in contact with the inside of the retaining wall, a side part to be in contact with the outer flange of the flank, and a bottom part continuous to both side parts,
The bottom surface portion is placed on a bracket that supports the erection, is connected to a side surface that is in contact with an outer flange of the erection, and a hook that is hooked to the upper end of the flange;
A flank back-filling formwork, characterized in that the flank backfilling formwork has an opening stop spanned between a flange on the outside of the flank and a side surface abutted against the inside of the retaining wall. The flank backfilling mold according to claim 1, wherein the mold is made of a lath material. The upset backfill formwork according to any one of claims 1 and 2, wherein a partition is provided along an axial direction of the upset of the formwork.

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