JPH0781262B2 - How to install a work box for steel sheet pile quay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Use of the Invention) When the present invention is corroded in the head, splash zone and tidal zone of a steel sheet pile quay, the present invention is installed on the quay portion near the tidal zone and The present invention relates to a method of mounting a work box for a steel sheet pile quay for draining water and drying the quay portion near the tidal zone for investigation, repair, inspection and corrosion protection.

(Prior Art) When a conventional work box of this type is attached to a steel sheet pile quay, it is necessary to stop the water so as not to leak between the work box and the steel sheet pile quay wall when the internal water is discharged. However, as shown in FIG. 6, the steel sheet pile quay 1 has vertical recessed grooves 2 and 2 arranged at regular intervals on the surface, so that the recessed grooves 2 and 2 must be closed.

Therefore, conventionally, as shown in FIG. 7, projecting piece portions 4a, 4a, ... Fitting into the respective recessed grooves 2, 2 are integrally provided on the front edge of the bottom plate 4 of the work box 3, and this is provided with a packing 5 for water stopping. The work box 3 is attached to the steel sheet pile quay 1 by fitting the work box 3 into the concave grooves 2, 2 via the.

(Problems to be Solved by the Invention) In the conventional method of mounting the work box as described above, the steel sheet pile quay 1 has U-shaped steel sheet piles 6, 6, ... As shown in FIG. 6 (A) in the width direction. Since the structure is such that the Z-shaped steel sheet piles 7, 7, ... Are connected in the width direction as shown in FIG. 6 (B), the play between the joining portions between the sheet piles causes an error. , The intervals between the recessed grooves 2, 2, ... Adjacent to each other vary.

On the other hand, since the intervals between the projecting pieces 4a, 4a, ... Of the work box 3 are predetermined, when the work box 3 is mounted so as to straddle a large number of grooves 2, 2 ,. 2, ... to each protrusion 4a, 4a,
... may not be compatible and cannot be installed.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a work box mounting method that does not disable mounting even if there are variations in the groove spacing of the steel sheet pile quay.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention uses a steel sheet pile quay wall in which a large number of steel sheet piles are connected in the width direction to form a large number of vertical grooves on the outer surface. In the mounting method of the work box for steel sheet pile quay, in which a work box that covers the outer surface of the steel sheet pile quay and forms a dry space is attached to the quay that is retained by a water-sealing packing. At the position where the joint edges of the work box are opposed to each other, a water blocking packing piece for filling the groove, which is made of an elastic material that is separate from the work box, is inserted, and then the work box It is characterized in that the joint edge facing the wall surface of the steel sheet pile is pressed against the outer surface of the water blocking packing piece and the wall surface of the steel sheet pile through a water blocking packing as appropriate.

(Operation) This work box is installed by inserting a water blocking packing piece for filling the groove into the groove of the steel sheet pile pier, so that the joint edge of the work box can be straight, and Work boxes can be installed regardless of the distance between the grooves.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS.

In the figure, reference numeral 11 is a work box for the wall surface of the steel sheet pile used in the present invention.

This work box 11 is provided with a box body 12 having an open upper surface and an upper surface on the side to be installed near the tidal zone of the steel sheet pile quay 1.
Float tanks 14a, 14b, 14c are attached outside the left and right side walls 13, 13 along the vertical direction. The box 12 is divided into three parts by the split surfaces 15 and 15 so that it is convenient for transportation. Although not shown in the drawing, the split surfaces 15 and 15 are connected by a flange connection. A work shelf on the inside of the box 12.
16 and a ladder 17 for raising and lowering are attached.

According to the present invention, the work box 11 is mounted on the mounting steel sheet pile quay 1. First, the water blocking packing piece 18 is inserted into the groove 2 of the steel sheet pile quay 1. As shown in FIG. 2, the waterproof packing piece 18 has a structure in which a sponge rubber material 19 is covered with a rubber sheet 20 so that the whole is elastically expandable and contractible, and has a width substantially the same as the width of the concave groove and The tip end is formed to have a size that protrudes from the groove 2 when it is fitted in the groove 2.

A suspension piece 21 is integrally provided on the upper and lower surfaces of the water blocking packing piece 18, and permanent magnets 22 are attached to the upper and lower edges on the side corresponding to the bottom of the groove 2.

This waterproof packing piece 18 is to be fitted at a height position where the bottom plate 23 of the work box 11 is opposed, and at the time of fitting, the weight 25 is hung with the rope 24 on the lower hanging piece 21 and the weight 25 is attached. The height of the rope 24 is adjusted in advance so that the waterproof packing piece 18 is at a predetermined height position in the bottomed state. Then, the weight 25 is set on the bottom so that the packing piece 18 is sunk to a predetermined height position, and the packing piece 18 is set in the groove 2.
The water blocking packing 18 is fitted inside and the permanent magnet 22 is attracted to the inner surface of the groove 2.

Next, stick packings 26 are attached to the both side walls 13 of the work box 11 and the front edges of the bottom plate 23, and the float tanks 14a, 14b, 14c are appropriately filled with water to adjust the buoyancy, and are submerged to a predetermined depth, and stopped. It is pressed against the protruding end surface of the water packing piece 18 and the surface of the steel sheet pile quay 1.

At this time, the water-proof packing piece 18 is pushed in by the protruding portion from the concave groove 2, whereby the outer peripheral surface of the inner surface of the concave groove 2 is pressed to stop the water. Further, at other portions, water is stopped by the bar-shaped packing 26 interposed between the berth side edge of the work box 11 and the berth area.

By draining the water in the work box 11 in this state, a work space in which the shore wall surface is exposed to the outside air is formed in the work box 11.

(Effects of the Invention) The method of mounting the work box for a steel sheet pile quay wall of the present invention is configured as described above, and is different from the work box at the position where the joint edges of the work box in each groove of the steel sheet pile wall face each other. Insert a waterproof packing piece for filling the groove, which is made of an elastic material of the body, and then insert a joint edge facing the steel sheet pile wall surface of the work box through the waterproof packing as needed. By making pressure contact with the outer surface of the bridge and the wall surface of the steel sheet pile, even if there is a variation in the distance between the recessed grooves of the steel sheet pile quay wall, it is possible to stop the water inside the work box without any hindrance. The same work box can be used for various steel sheet pile quays having different groove shapes by making only various types of waterproof packing pieces according to the groove shape of the quay wall made of steel sheet piles. .

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a work box used in the present invention, and FIG.
FIG. 3 is a cross-sectional view of the waterproof packing piece, FIG. 3 is a side view showing the fitted state of the waterproof packing piece, FIG. 4 is a plan view of the same, FIG. A) and (B) are cross-sectional views of different examples of the steel sheet pile quay to which the work boxes are to be mounted respectively, FIG. 7 is a perspective view of the conventional work box, and FIG. 8 is the conventional work box and the steel sheet pile quay. It is a top view which shows the relationship with. 1 …… Steel sheet pile quay, 2 …… Concave groove, 11 …… Work box, 18 ……
Water-stop packing piece, 23 …… bottom plate, 26 …… bar packing.

Claims (1)

[Claims] Claim: What is claimed is: 1. A quay wall which is earth-retained by a steel sheet pile quay wall in which a large number of steel sheet piles are connected in the width direction to form a plurality of vertical grooves on the outer surface. In a method of mounting a work box for a steel sheet pile quay that attaches a work box that forms a space via a water blocking packing, in the position where the joint edges of the work box in each groove of the steel sheet pile wall face each other, the work is performed. Insert a water blocking packing piece for filling the groove, which is made of an elastic material separate from the box, and then insert the joint edge facing the steel sheet pile wall surface of the work box through the water blocking packing as appropriate. A method for mounting a work box for a steel sheet pile quay, which comprises press-contacting the outer surface of a waterproof packing piece and the wall surface of a steel sheet pile.