JP2673634B2 - How to connect the underground wall to the floor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a continuous underground wall for retaining soil and a concrete floorboard.

[0002]

2. Description of the Related Art Conventionally, as a method of connecting an underground continuous wall made of steel sheet pile and a concrete floor board, (1) a steel plate having reinforcing bars fixed in advance by welding is welded to a steel sheet pile of the underground continuous wall or Fixing with bolts, then placing concrete for sidewalls covering the underground wall and floor concrete for embedding the reinforcing bars, (2) Fixing stud rebars directly to steel sheet piles in the underground wall by welding Then, a method of placing concrete for the side wall covering the underground continuous wall and floor concrete for embedding the stud rebar is known.

[0003]

In the conventional method described above, when a steel sheet or a stud rebar is welded to a steel sheet pile, it is difficult to control the welding quality because it is welding at a site where the water content is high, and a skilled welder is required. Needed. Also, when welding, the environment at the work site tended to deteriorate. When welding stud rebar, the diameter is 22 mm in the horizontal direction.
There is a problem that welding of the stud rebar of No. 1 cannot be applied to a floorboard having a large cross-section because it is the limit of construction.

[0004]

In order to advantageously solve the above-mentioned problems, in the method for connecting an underground continuous wall and a floorboard of the present invention, each of the steel sheet piles 3 having parallel flanges 1 and 2 is used. The horizontal screw rod 4 is inserted through the flanges 1 and 2, the horizontal screw rod 4 is fixed to the outer flange 1, and the male screw portion of the horizontal screw rod 4 projecting from the inner flange 2 is covered with the covering member 5 to make the steel. While constructing the sheet pile 8, while connecting a large number of the steel sheet piles 8 with the horizontal screw rods through a joint provided in the steel sheet pile 8, the sheet pile 8 is built in the muddy water in the groove hole 7 provided in the ground 6, A floor in which the underground continuous wall 9 is constructed, and then the inside of the underground continuous wall 9 is excavated and discharged, after which the covering member 5 is removed from the horizontal screw rod 4 and the horizontal reinforcing bar 10 is embedded in the horizontal screw rod 4. Placing concrete 13 on the board.

[0005]

Next, embodiments of the present invention will be described in detail. First, as shown in FIGS. 1 and 2, a steel reinforcing plate 14 is brought into contact with the surface of an outer flange 1 of a steel sheet pile 3 having an H-shaped cross section having parallel flanges 1 and 2 and fixed by welding. A steel reinforcing plate 15 is abutted and fixed by welding on the back surface of the inner flange 2 of the steel sheet pile 3, and each flange 1, 2 and each reinforcing plate 14, 1 of the steel sheet pile 3 are fixed.
5, a plurality of horizontal screw rods 4 are inserted, and each horizontal screw rod 4 is fixed to the outer flange 1 and the reinforcing plate 14 by a pair of clamping nuts 16 and 17, and protrudes from the inner flange 2. A covering member 5 made of a cap with a female screw for covering the male screw portion of the lateral screw rod 4 is screwed into the lateral screw rod 4.

Parallel flanges 1 and 2 in the steel sheet pile 3
A female joint 19 is provided at one end of each of the above, and a male joint 20 capable of engaging with the female joint 19 is provided at the other end. As shown in FIGS. 3 and 4, a large number of steel sheet piles 8 with horizontal screw rods are connected to each other by engaging the female joint 19 with the male joint 20, and the inside of the groove hole 7 provided in the ground 6 is connected. It is built in muddy water to construct the underground continuous wall 9. In addition,
The joint means between the steel sheet piles 8 with the horizontal screw rods may be a male-female joint or a hook-shaped joint which is a simpler general-purpose joint.

Next, as shown in FIG. 5, after the room temperature hardening material 21 such as concrete is filled into the groove hole 7 and hardened, as shown in FIG. 6, the ground inside the underground continuous wall 9 and The room temperature curable material 21 is excavated and discharged, and then the covering member 5 is removed from the lateral screw rod 4.

Next, as shown in FIGS. 7 and 8, the lock nut 2 is attached to the lateral screw rod 4 protruding from the inner flange 2.
2 and the screw type coupler 11 are sequentially screwed, and the male screw portion at the end of the horizontal reinforcing bar 10 is screwed to the screw type coupler 11 and the lock nut 2 screwed to the horizontal reinforcing bar 10.
3 is pressed against the end face of the screw type coupler 11. Next, as shown in FIGS. 9 and 10, floor concrete 13 in which the horizontal reinforcing bars 10 are embedded and side wall concrete 12 located inside the underground continuous wall 9 are poured.

When carrying out the present invention, as the steel sheet pile,
A steel sheet pile having male joints on both sides in the width direction and a steel sheet pile having female joints on both sides in the width direction may be used in combination.

[0010]

According to the present invention, the parallel flanges 1, 2
A horizontal screw rod 4 is inserted over each of the flanges 1 and 2 of the steel sheet pile 3 having the above, the horizontal screw rod 4 is fixed to the outer flange 1, and the male screw portion of the horizontal screw rod 4 protruding from the inner flange 2 is covered. The steel sheet pile 8 is covered with the member 5 and a large number of the steel sheet piles 8 with horizontal screw rods are connected to each other through a joint provided in the steel sheet pile 8 while the inside of the groove hole 7 provided in the ground 6 is connected. After building in the muddy water to construct the underground continuous wall 9, and then excavating and discharging the inside of the underground continuous wall 9, the covering member 5 is removed from the horizontal screw rod 4, and the horizontal screw rod 4 is attached to the horizontal screw rod 4. Since the flooring concrete 13 in which the horizontal reinforcing bars 10 are embedded is placed, it is not necessary to perform welding at a construction site with high water content, and by using the horizontal reinforcing bars 10 having an arbitrary thickness, the underground continuous wall can be simply constructed. 9 and floor concrete 13 can be strongly connected

[Brief description of the drawings]

FIG. 1 is a plan view showing a steel sheet pile with a horizontal screw rod.

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

FIG. 3 is a cross-sectional plan view showing a state in which a steel sheet pile with a horizontal screw rod is built in a slot to form an underground continuous wall.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a vertical cross-sectional side view showing a state in which the room temperature curable material is filled in the groove hole and the underground continuous wall.

FIG. 6 is a vertical cross-sectional side view showing a state in which the inside of the underground continuous wall is excavated and the covering member is removed from the horizontal screw rod.

FIG. 7 is a vertical sectional side view showing a state in which a horizontal reinforcing bar is connected to an underground continuous wall.

8 is a longitudinal sectional side view showing a part of FIG. 7 in an enlarged manner.

FIG. 9 is a vertical sectional side view showing a state in which floor concrete and side wall concrete are cast.

FIG. 10 is a vertical sectional side view showing a part of FIG. 9 in an enlarged manner.

[Explanation of symbols]

 1 Flange 2 Flange 3 Steel sheet pile 4 Side screw 5 Covering member 6 Ground 7 Slot hole 8 Steel sheet pile with side screw 9 Underground continuous wall 10 Horizontal rebar 11 Screw type coupler 12 Sidewall concrete 13 Floor concrete 14 Reinforcing plate 15 Reinforcing plate 16 Clamping nut 17 Clamping nut 18 Muddy water 19 Female joint 20 Male joint 21 Room temperature curable material 22 Lock nut 23 Lock nut

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miki Tsukasa 2-6-3 Otemachi, Chiyoda-ku, Tokyo Within Nippon Steel Corporation (72) Inventor Masaki Tatsuda 2-6, Otemachi, Chiyoda-ku, Tokyo No. 3 In Nippon Steel Co., Ltd. (72) Inventor Toshio Watanabe 1-2-3 Shibaura, Minato-ku, Tokyo Inside Shimizu Construction Co., Ltd. (72) Hiroshi Furube 2-chome, Kita-Aoyama, Minato-ku, Tokyo No. 8 Intra-company group (56) Reference JP 5-321245 (JP, A) JP 61-102915 (JP, A) JP 3-221612 (JP, A) JP 58-17918 (JP, A) JP-A-1-203513 (JP, A)

Claims (1)

(57) [Claims] 1. A steel sheet pile 3 having parallel flanges 1, 2.
The horizontal screw rod 4 is inserted through each of the flanges 1 and 2 in FIG. 1, the horizontal screw rod 4 is fixed to the outer flange 1, and the male screw portion of the horizontal screw rod 4 protruding from the inner flange 2 is covered with the covering member 5. To construct a steel sheet pile 8 and connect a large number of the steel sheet piles 8 with the horizontal screw rods to each other through a joint provided in the steel sheet pile 8 while being built in the muddy water in the groove hole 7 provided in the ground 6. Then, after constructing the underground continuous wall 9, and then excavating and discharging the inside of the underground continuous wall 9, the covering member 5 is removed from the horizontal screw rod 4, and the horizontal reinforcing bar 10 is embedded in the horizontal screw rod 4. A method for connecting a continuous underground wall and a floorboard, in which the floorboard concrete 13 is placed.