JPH10102522A - Water stop panel for submerged caisson final joint section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply fit a water stop panel without requiring the installation of a strut steel material when a sunk submerged caisson final joint section is connected. SOLUTION: A rubber bag 13 is provided between an outside panel 11 and an inside panel 12 to form a water stop panel 10. A guide 20 and an electromagnet 21 are provided on the outer wall face of a submerged caisson 17. When the water stop panel 10 is to be fitted to a submerged caisson final joint section 16, a guide groove 15 provided on the outside panel 11 is engaged with the guide 20 of the submerged caisson 17, and the outside panel 11 is attracted to the outer wall face by the action of the electromagnet 21. A solidifying material 23 is forcedly fed into the rubber bag 13 to expand it, and the end face of the submerged caisson 17 is pressure bonded by the end section of the rubber bag 13. After the solidifying material is hardened and the water stop panel 10 is fixed to the water stop state, the water between bulkheads 19, 19 is discharged, and the submerged caissons 17, 17 are connected by water pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stop panel of a final joint of a buried box laid when a buried tunnel is constructed.

[0002]

2. Description of the Related Art
When constructing a submerged tunnel, a submerged box is submerged and connected sequentially, and the final joint of the submerged box is generally connected by a waterproof panel method. However, since the water stop panel system temporarily receives the reaction force of the rubber gasket due to drainage, it is necessary to install a strut steel member for receiving the reaction force between the end faces of the immersion box by the work of the diver.

In addition, it is difficult to install the water stop panel on the bottom surface after installing the water stop panel on the side surface, and the work time of the diver often becomes long. Further, it takes time and effort to secure the water stoppage between the water stop panels, which causes a cost increase.

[0004] Therefore, when connecting the final joint of the buried submerged box, the solution is to eliminate the installation of strut steel, simplify the installation of the water stop panel, reduce the work of the diver as much as possible, and reduce the cost. The technical problem to be solved arises, and the present invention aims to solve this problem.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and in a water stop panel of a final joint of a buried box which is sequentially laid and connected, the water stop panel is provided. Consists of an outer panel and an inner panel, and has an inflatable rubber bag interposed between them, while an electromagnet is installed on the outer wall surface of the final joint of the submerged box to allow the outer panel to be attracted, A guide groove is provided on the outer wall surface and a guide groove for engaging with the guide is provided on the outer panel. Further, when the solidified material is pressed into the rubber bag and inflated, an end of the rubber bag is formed. The final joint part of the submerged box in which a tube-shaped packing is provided between the rubber bag of the water-stop panel and the rubber bag of the water-stop panel adjacent thereto while forming the end face of the submerged box in pressure contact with To provide a waterproof panel.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 3 show a waterproof panel 10 at the final joint of a submerged box, in which two outer panels 11 and inner panels 12 made of steel or precast concrete are put together, and an inflatable rubber bag 13 is interposed therebetween. Is interposed. The rubber bag 13 is attached to the lower surface of the outer panel 11 and the upper surface of the inner panel 12.
By injecting a fluid from an inlet 14 protruding from the upper surface of the rubber bag 13, the rubber bag 13 is formed so as to expand and the outer panel 11 and the inner panel 12 are separated from each other as shown by a two-dot chain line. . Further, guide grooves 15 are provided at both left and right ends of the outer panel 11. The pitch of the guide grooves 15 is the same as the interval between the guides 20 projecting from the outer wall surface of the submerged box described later.

FIGS. 4 and 5 show a final joint 16 of the submerged box. A stepped portion 18 is provided on an end face of the submerged box 17, and the inside of the submerged box 17 is shielded by a bulkhead 19. I have. Guides 2 are provided at predetermined intervals on the outer wall of
As shown by the two-dot chain line, if the guide groove 15 is engaged with the guide 20 when the water stop panel 10 is mounted, the water stop panel 10 is accurately positioned and the final It is attached to the joint 16. Therefore, it is not necessary to finely adjust the mounting position when the water stop panel 10 is mounted.

Here, an electromagnet 21 is installed on the stepped portion 18. The electromagnets 21 are buried at appropriate intervals on the outer wall surface of the submerged box 17. When the steel water-stop panel 10 is mounted, the electromagnets 21 are actuated from the inside of the submerged box 17 to apply magnetic force to the back surface of the outer panel 11. Adsorb at. For example, when installing the water stop panel 10 on the bottom side of the buried box final joint part 16, if the water stop panel 10 is set near the construction location,
The water stop panel 10 is attracted to and held by the submerged box 17 by the electromagnet 21. Therefore, the holding of the water stop panel 10 becomes easy, and the work of the diver, which has conventionally been performed for a long time, is significantly reduced.

After the water stop panel 10 is sequentially mounted on the final joint 16 of the submerged box, and the space between the submerged boxes 17, 17 is covered with the water stop panel 10, as shown in FIG. The hose 22 is connected to the injection port 14 protruding from. First
In the process, hoses 22 are respectively connected to the inlets 14 of every other water stop panel 10, and a cement material or a similar solidifying material 23 is pressed into the rubber bag 13. In such a case, the rubber bag 13 expands and the right and left ends of the rubber bag 13 press against the end faces of the sunk boxes 17, 17, and the front and rear ends of the rubber bag 13, as shown by the two-dot chain line in FIG. 3. The part slightly protrudes from both sides of the water stop panel 10. A tube-shaped packing 24 is attached to the front end or the rear end of the rubber bag 13.

The expanded and hardened rubber bag 13 serves as a water-stopping material when draining water between the bulkheads 19 and 19, and receives a reaction force generated between the end faces of the submerged boxes 17 and 17. Serve the role of. In addition, as shown in FIG. 7, a concave portion 25 (or a convex portion)
Is provided.

After the solidified material in the rubber bag 13 is solidified, in the second step, the injection port 14 of the remaining water stop panel 10 is formed.
Hoses 22 are respectively connected to the solidified material 23 in the rubber bag 13.
To inflate. At this time, the front and rear gaps between the water stop panels 10 and 10 are set in advance to optimal dimensions so that the adjacent water stop panels 10 do not interfere with each other due to the expansion of the rubber bag 13.

As shown in FIG. 8, when each of the rubber bags 13 is hardened, the solidified material is press-fitted into the tube-shaped packing 24 so as to expand, and the rubber bags 13 of the adjacent waterproofing panels 10, 10 are expanded. Water stoppage between 13 is performed. The packing 24 ensures that the water is stopped between the water stop panels 10 and 10. Then, after the solidified material in the packing 24 is solidified and all the water blocking panels 10 are fixed in a water stopped state, the operation of the electromagnet 21 is released.

The water between the bulkheads 19 of the final joint 16 of the buried box is drained by a pump, and the buried boxes 17 are hydraulically joined. At this time, the water stop panel 10
, A stress acts in a direction in which the buried boxes 17, 17 are drawn, but the cured rubber bag 13 acts as a reaction force in the tunnel axial direction. Also, the concave portion 25 (or convex portion) described in FIG.
This serves as a support for the shearing force of the water stop panel 10 in the direction perpendicular to the tunnel axis.

The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

[0015]

As described above, according to the present invention, when the waterproofing panel is mounted on the final joint of the buried box, the guide groove of the waterproofing panel is engaged with the guide projecting from the outer wall surface of the buried box. The water stop panel is attracted to the outer wall surface by the operation of the electromagnet. Therefore, the positioning of the water stop panel is accurate and does not require fine adjustment, and the water stop panel has good holding properties. Further, since the end face of the sunk box is pressed against the end of the rubber bag expanded with the solidified material, high waterproofness can be ensured and the reaction force generated between the end faces of the sunk box can be received by the rubber bag. For this reason, the installation of the strut steel material which has been required conventionally becomes unnecessary, and the work of the diver can be reduced.

In this way, the waterproofness of the final joint of the submerged box is improved, water can be reliably stopped only with the waterproofing panel, the work of mounting the waterproofing panel is simplified, the construction period is shortened, and the cost is reduced. Can be planned.

[Brief description of the drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is a front view of a water stop panel.

FIG. 2 is a plan view of a water stop panel.

FIG. 3 is a bottom view of the water stop panel.

FIG. 4 is a cross-sectional view of the final joint part of the submerged box.

FIG. 5 is an enlarged plan view of a final joint portion of the buried box.

FIG. 6 is a cross-sectional view of the final joint of the submerged box in a state where the solidified material is pressed into the rubber bag of the water stop panel.

FIG. 7 is an enlarged cross-sectional view of a final joint of the immersion box in which a concave portion is provided on an end surface of the immersion box.

FIG. 8 is an enlarged cross-sectional view showing a packing provided between rubber bags of adjacent water stop panels.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Water stop panel 11 Outer panel 12 Inner panel 13 Rubber bag 15 Guide groove 16 Final joint of buried box 17 Buried box 20 Guide 21 Electromagnet 23 Solidification material 24 Packing

Claims (1)

[Claims] 1. A waterproofing panel of a final joint of a buried box, which is sequentially sunk and connected, wherein the waterproofing panel includes an outer panel and an inner panel, and an inflatable rubber bag is interposed therebetween. On the other hand, an electromagnet is installed on the outer wall surface of the final joint part of the submerged box to enable the outer panel to be attracted, and a guide groove is formed on the outer wall surface by projecting a guide and engaging with the guide. It is provided on the outer panel, and when the solidified material is press-fitted into the rubber bag and expanded, the end face of the rubber bag is formed so as to be pressed against the end face of the rubber bag, and the rubber of the water stop panel is formed. A watertight panel at a final joint of a submerged box, wherein a tube-shaped packing is provided between a bag and a rubber bag of a waterproof panel adjacent to the bag.