JP2626443B2 - Connection box for submerged box connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting box used for final joining of a buried box when a buried box is laid and joined on the sea floor or the like to form a buried tunnel.

[0002]

2. Description of the Related Art The conventional final joining of a submerged box involves sealing the joint.
They were surrounded by a top pile, mortar was cast and hardened, then the inside was stripped off to complete the tunnel, or a connection box was built into the existing box, which was extruded and joined together.

[0003]

In the conventional method, the amount of reaming is large and the operation is difficult. Also, in the method of extruding and joining the connection box, the joint end of the connection box does not join well with the end of the buried box due to the displacement of the buried box,
A large force was required even if the jacks were pulled together to join.

[0004] The present invention has been made to solve the above problems, and relates to a connection box comprising a slidable inner box and an outer box. By using the connecting box of the present invention, the immersed box can be finally joined with high work efficiency.

[0005]

The present invention comprises (A) an inner box slidable to each other and an outer box having a partition (B).
The inner box and the outer box open in opposite directions on the farthest side,
(C) A rubber gasket is attached to the end face of the opening,
(D) The sliding portion forms a sliding portion space as an independent space surrounded by two front and rear seal portions, the inner peripheral surface of the inner box, and the inner peripheral surface of the outer box. (E) The sliding portion space of the outer box A sliding shoe is provided therein, and (F) an openable / closable injection pipe penetrating the outer casing wall and opening to the sliding portion space is provided, and (G) penetrating the outer casing wall to provide a room inside the partition wall. It is a connection box for immersion box joining, which is provided with an openable water pipe that can be opened and closed.

The connecting box of the present invention is used for final joining when constructing a submerged tunnel, and when connecting two submerging boxes to each other and when connecting the submerged box to the side of a vertical caisson. Both are used exactly the same. However, when joining two buried boxes to each other, it is necessary to arrange the end face of the buried box to be joined to the outer box of the connecting box of the present invention in advance so as to be aligned with the cross-sectional shape of the outer box.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a connecting box according to the present invention;

FIG. 1 is a vertical sectional view in the axial direction of a connection box according to the present invention. The inner box 1 is inserted into the inner surface of the outer box 2 and slides between the outer surface of the inner box 1 and the inner surface of the outer box 2. The inner box 1 and the outer box 2 are opened in opposite directions on the farthest side, and a rubber gasket 3 is mounted on the end face of each opening. A sliding part space is formed as an independent space surrounded by the inner peripheral surface 4, the inner peripheral surface of the inner case, and the inner peripheral surface of the outer case. A sliding shoe 5 is provided in the sliding portion space of the outer box. The sliding shoe 5 is preferably provided with a jack for adjusting the position of the connection box. An openable and closable injection pipe 6 </ b> B penetrating the peripheral wall of the outer box 2 and opening to the sliding portion space is provided. The outer box 2 is provided with a partition 7,
A water injection pipe 6 </ b> A that is openable and closable in a room inside the partition 7 of the outer box 2 penetrates the peripheral wall of the outer box 2. The partition 7 of the outer box 2 has a working hole and is closed by a lid 8. The support wall of the inner box 1 has a working hole and is closed with a lid 8.

Referring to FIG. 2, the joining method using the connection box of the present invention will be described. (FIG. 2 shows a case where an existing buried box (hereinafter referred to as an existing box) is joined to the side of the vertical caisson. However, the same applies to the case where the existing boxes are mutually connected.) Receiving jaws 11 are provided on both sides of the joint end of the box and the vertical caisson to indicate the installation position of the end of the connection box and to guide the movement of the connection box.

(2) The connecting box is hung down on the receiving jaw 11 which is a predetermined position at the joint, and is set in a state where the inner box 1 is deeply inserted into the outer box 2. (FIG. 2A) (3) The inner box 1 is pulled into the existing box 9 with a jack. The valve of the drain pipe 12 on the existing box 9 side is opened, the water in the inner box 1 is drained, and the inner box 1 is pressed against the existing box 9 by water pressure. (4) The valve of the water injection pipe 6A is opened, water is pressed into a room inside the partition wall of the outer box 2, and the outer box 2 is pushed out to be pressed against the side wall 10 of the vertical caisson. (FIG. 2 (b)) (5) Open the valve of the drain pipe 13 on the vertical caisson side, drain the water in the room outside the partition wall of the outer box 2, and press-contact it.

(6) If necessary, adjust the inclination of the connection box with a jack attached to the sliding shoe 5.

(7) The valve of the injection pipe 6B is opened, and mortar or the like is injected into the space of the sliding portion to integrate the sliding portion.

With the above, the final joining of the existing box and the side of the vertical caisson is completed, and the removal of the lid, drainage of the inside of the box, concrete placement of the joint, finishing in the box, etc. are performed as usual.

[0014] In the bonding method described above, may be omitted as appropriate if unnecessary operations by the work may be performed concurrent manner also the operation order may be performed sometimes reversed.

[0015]

According to the present invention, even if there is a slight displacement in the existing box, the displacement can be absorbed by the sliding portion and used as a connection box composed of a slidable inner box and an outer box. Can be finally joined. The connection box can be pressed against the existing box with water pressure due to the difference in the size of the outer shape of the inner box and the outer box. The work of hydraulic pressure welding is simplified by providing a partition in the outer box to form two rooms.

[Brief description of the drawings]

FIG. 1 is an axial sectional view of a connecting box according to the present invention.

FIGS. 2A and 2B are vertical sectional views in the axial direction in a state where the connection box of the present invention is installed at a final joint, and FIG. 2A shows a state immediately after installation and FIG.

[Explanation of symbols]

1. Inner box 2. Outer box 3. Rubber gasket 4.
・ Seal material, 5 ・ ・ Shoe for sliding, 6A ・ ・ Injection pipe, 6
B. Injection pipe, 7 ... partition wall, 8 ... lid, 9 ... existing box,
10 ············································

Claims (1)

(57) [Claims] (A) An inner box slidable to each other and an outer box having a partition wall. (B) The inner box and the outer box are opened in opposite directions on the farthest side, and (C) A rubber gasket is attached to the end face of the opening, and (D) the sliding part forms a sliding part space as an independent space surrounded by two front and rear seal parts, the outer peripheral surface of the inner box, and the inner peripheral surface of the outer box. (E) a sliding shoe is provided in the sliding portion space of the outer case, (F) an openable and closable injection pipe is provided which penetrates the outer case wall and opens to the sliding portion space, and (G) A connection box for submerged box joining, characterized by being provided with an openable and closable water pipe that penetrates an outer box wall and opens into a room inside the partition wall.