JPH0610353A - Wale and back-fill concrete application in bracing type retaining work - Google Patents

Abstract

PURPOSE:To place simply and rapidly back-filling concrete in the clearance between a sheet pile and a wale. CONSTITUTION:A vertical part 4a contacting the outside wall face of the outer flange 2a of a wale 2 and a hook 4b fitting to the upper end of the flange 2a at the upper end of the vertical part 4a are provided by steel rods and further, a folded part 4c bent with right angles at the lower end of the vertical part 4a is provided to form a metal support 4. The folded part 4c of the metal support 4 is cut in accordance with the depth from the flange 2a to the inside wall face of the recessed part 1b of respective sheet piles 1 to hook respective metal supports 4 on the flange 2a every specified interval and to get in contact with the inside wall face of the recessed part 1b at the front end thereof. And laths 5 are applied at the folded part 4c and the outside wall face of the outer flange 2a. After that, a back-filling concrete C is placed in the clearance between the laths 5 and the inside wall face of the recessed part 1b of the sheet pile 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method by which backfilling concrete can be simply and quickly placed in a space between a recess of a sheet pile and an abdomen rise in a shredded earth retaining method. Is.

[0002]

2. Description of the Related Art Since a plurality of sheet piles driven into the soil during earth retaining work are required to have a perfect waterproof property, it is ideal that they are continuously driven in a straight line without irregularity. Is. When the anti-corrosion made of H steel is horizontally installed on the front surface of the ideally driven sheet pile, the width and depth of the gap between the recess of each sheet pile and the outer flange of the anti-inflation sheet. Since all are constant, it is possible to manufacture the formwork in advance by factory production or the like, attach the formwork on site, and place the backfill concrete.

However, in some cases, depending on the soil layer below which the sheet pile is placed, the sheet pile may meander or bend, resulting in unevenness.
Since the width and depth of the gap between the recess of each sheet pile and the outer flank of the bellows are not constant, the formwork for placing the backfill concrete is the width corresponding to each gap by the site construction. I made it according to the depth and installed it and put backfill concrete.

Although a method of pushing a sand bag into the void has been adopted, at present, this method is stopped by the instruction of the Ministry of Construction and only the method of placing backfill concrete is adopted. .

[0005]

Therefore, in the above-mentioned conventional method for placing backfill concrete, the width or depth of the gap between the recess of each sheet pile and the outer flange of the bellows may not be constant. Since there are many, there is a problem that it is extremely inconvenient because a mold corresponding to each void portion must be manufactured and attached by site construction, and it takes time and labor to shorten the construction period.

[0006] The present invention is intended to provide a method for placing a swelling backfilling concrete in a cut-and-slip type earth retaining method for the purpose of solving the above conventional problems.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a round steel material is used to make a vertical portion which is in contact with an outer wall surface of a flange on the outside of the bellows, and a hook portion which is hooked to an upper end portion of the flange at an upper end of the vertical portion. And a bent portion bent at a right angle is provided at the lower end of the vertical portion to form a holding metal fitting, while the bent portion of the holding metal fitting is recessed in each seat pile from the outer flange of the rising position of the mounting position. Of the holding metal fittings are cut along the depth to the inner wall surface, and the plurality of holding metal fittings are hooked to the flange via the hooking portions at predetermined intervals, and the tip of the bent portion is inside the concave portion. Arranged so as to contact the wall surface,
Further, a lath is laid on the bent portion of each of the holding metal fittings and the outer wall surface of the outer flange, and after that, the backfill concrete is poured into the space between the lath and the inner wall surface of the recess of the sheet pile. The above problem was solved by adopting the means of providing.

[0008]

According to the present invention having the above-mentioned structure, at the site where the back-filling concrete is placed, the inner wall surface of the recess of each sheet pile is extended from the outer flange of the waving to the position where the length of the bent portion of the holding metal fitting should be attached. Cut according to the depth up to. Then, the plurality of holding metal fittings are hooked on the bulged outer flanges, and the lath is placed on the bent portions of the respective holding metal fittings and the outer flanges. Further, backfill concrete is placed in the space between the lath and the inner wall surface of the recess of the sheet pile.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of carrying out the method of the present invention will be described in detail with reference to the drawings. In front of a plurality of sheet piles 1 that are continuously cast in the ground G, an abdomen made of H steel is raised. Although one or a plurality of two sheet piles 1 are provided side by side, the sheet piles 1 are not arranged continuously in a straight line in FIG. 1, and the sheet piles 1 meander or bend and are arranged irregularly. The illustrated state is shown.

When the waving member 2 is provided laterally on the front surface of the sheet pile 1, the convex portion 1a of the sheet pile 1 and the waving member 2 are provided.
If there is a gap between the outer flanges 2a, a wedge-shaped packing 3 is driven into the gap so that the convex portion 1a and the flange 2a are pressed against each other via the packing 3.

Then, the recesses 1b of the sheet piles 1 are formed.
Since the backfilling concrete C is placed in the space S between the flanges 2a on the outer side of the bellows 2 and the bellows 2, the present invention uses a round steel material to form the vertical portion 4a in contact with the outer wall surface of the flange 2a.
The upper end of the vertical portion 4a is bent in a fishing shape so that the upper end portion of the flange 2a can be hooked, and the hooking portion 4b is continuously provided, and the lower end of the vertical portion 4a is bent at a right angle. Music part 4
A large number of holding metal fittings 4 formed by connecting c are manufactured in advance in a factory, and the bent portions 4 of the many holding metal fittings 4 are manufactured.
The length of c is cut according to the depth from the flange 2a to the inner wall surface of the recessed portion 1b of each sheet pile 1, and a plurality of holding metal fittings 4 are provided at predetermined intervals on the flange 2a so as to have hooking portions 4b. The bent portions 4c are arranged so as to be in contact with the inner wall surface of the recessed portion 1b, and the bent portions 4c of the respective holding metal fittings 4 and the outer wall surface of the outer flange 2a. Crotch and place Las 5 and then Las 5
And a method of placing backfilling concrete C in the space S between the inner wall surfaces of the recess 1b of the sheet pile 1 is used. .

The above-mentioned backfilled concrete C is
It is placed on the lath 5 and is retained and solidified in the void S without dropping downward, and the same action and effect as the conventional backfill concrete can be achieved. The burrs 6 are fixed to the flange 2b of the above without any unbalanced load.

[0013]

Since the present invention is as described above, a large number of holding metal fittings are manufactured in a factory, and the bent portions of the large number of holding metal fittings are attached to the seat piles from the outer flanges of the rising position at the mounting position. It cuts according to the depth to the inner wall surface of the recessed part, and a plurality of holding metal fittings are hooked to the flange via a hooking part at predetermined intervals, and the tip of the bent part is fixed to the recessed part. Arranged to contact the inner wall surface,
Further, a lath is laid on the bent portion of each of the holding fittings and as an outer wall surface of the flange of the outer surface, and then lath is placed, and then backfill concrete is placed in a space between the lath and the inner wall surface of the recess of the sheet pile. By placing it, the same effect as conventional backfill concrete can be obtained, and the bending part of the holding metal fitting is simply placed in the space between the inner wall surface of the recess of each sheet pile and the outer flange of the bellows. Since it is only cut together, it is an extremely easy and quick work compared to the work of manufacturing and mounting a formwork in the conventional on-site construction, and it is possible to immediately enter the backfilling concrete pouring work. Therefore, the work period can be shortened and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a construction state of a method for placing abdominal upset backfilling concrete in the cut-and-slip type earth retaining method of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of a holding metal fitting used in a method for placing abdominal backfill concrete in the cut-and-slip type earth retaining method of the present invention.

[Explanation of symbols]

1 sheet pile, 1a convex portion of sheet pile, 1
b Seat Pile Recess, 2 Wrapping, 2a Wrapping Outer Flange, 4 Holding Bracket, 4a Holding Bracket Vertical Section, 4b Holding Bracket Hook, 4c Holding Bracket, 5 Lath, C Backfill Concrete, S void.

Claims (1)

[Claims] 1. A round steel member is provided with a vertical portion in contact with an outer wall surface of a flange on the outside of the bellows, and a hook portion for hooking the upper end portion of the flange at an upper end of the vertical portion, and the vertical portion of the vertical portion is provided. While forming a holding metal fitting by providing a bent part bent at a right angle at the lower end, align the bent part of the holding metal fitting with the depth from the outer flange of the rising position of the mounting position to the inner wall surface of the recess of each sheet pile. And a plurality of holding metal fittings are hooked to the flange via the hooking portions at predetermined intervals, and the tip of the bent portion is arranged so as to contact the inner wall surface of the recess. Further, a lath is laid on the bent portion of each of the holding fittings and the outer wall surface of the outer flange,
Then, the backfilling concrete is placed in the space between the lath and the inner wall surface of the recess of the sheet pile.