JPH0742809U - Work Box for Underwater Steel Pipe Oblique Pile - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a work box for a submerged steel pipe oblique pile, which can facilitate adjustment of buoyancy and engagement work to the oblique pile. [Structure] A bottomed cylindrical shape having a cylinder wall inclined at a required angle with respect to a horizontal bottom wall, and consisting of a pair of segments vertically divided in two in the direction of inclination of the cylinder wall. A shell in which a diagonal pile insertion hole for inserting a diagonal pile is formed in the center of the wall, and it is individually formed in the shape of a horizontal rectangular box on the upper outer periphery of both segments, and is openably and closably connected via a hinge.
In addition, a square tank in which the inside of the inner upper stage, which is separated into two upper and lower stages, is divided into a plurality of buoyancy adjusting chambers having a water injection / drainage means by a partition wall that is separated in the inclination direction of the cylindrical wall, and a base end portion is provided on the inner periphery of the shell By providing the plurality of obliquely sandwiched pinching means, the unbalanced force can be eliminated and the obliquely pinched means can be rotated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work box for an underwater steel pipe diagonal pile used for work such as reinforcement and repair of a splash zone of an underwater steel pipe diagonal pile that supports a floating structure such as a jetty.

[0002]

[Prior art]

 Conventionally, this type of work box has been assembled into a bottomed cylindrical shape by combining a plurality of vertically divided units with a bottomed cylindrical shape divided vertically, and a submerged steel pipe pile is kept watertight at the center of the bottom plate. It is known that there is a steel pipe insertion hole that is passed through and that is provided with a pile holding means for holding the underwater steel pipe pile that is inserted into the steel pipe pile insertion hole (Japanese Utility Model Publication No. 3-4 2119). reference).

[0003]

[Problems to be solved by the device]

 However, conventional work boxes are used for vertical submerged steel pipe piles, and in the case of submerged steel pipe diagonal piles that are tilted at the required angle, unbalanced forces are generated, so adjustment of buoyancy and work boxes for diagonal piles are required. There is a problem that the pile holding means interferes with the oblique piles when they are engaged. Therefore, an object of the present invention is to provide a work box for an underwater steel pipe oblique pile, which can facilitate adjustment of buoyancy and engagement work with the oblique pile.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the working box for a submerged steel pipe oblique pile according to the present invention is formed in a bottomed cylindrical shape having a cylindrical wall inclined at a required angle with respect to a horizontal bottom wall, and the inclination of the cylindrical wall is It consists of a pair of segments that are vertically divided in two in the diagonal direction and are connected in a watertight manner. Both shell and shell segments are formed with a beveled pile insertion hole for watertightly inserting a steel pipe diagonal pile in the center of the bottom wall. It is individually formed in the shape of a horizontal rectangular box on the outer periphery of the upper part, and is openable and watertightly connected via a hinge at one end, while the inner upper part is airtightly separated into two upper and lower parts. A rectangular tank divided into a plurality of buoyancy control chambers having a water injection / drainage means by partition walls that are separated from each other in the inclination direction of the cylindrical wall, and a semi-ring-shaped work attached to each segment on the inner circumference of the upper part of the shell. Scaffold and inner circumference of shell below work scaffold Providing a plurality of expandable and retractable oblique pile clamping means, the base end portions of which are spaced apart from each other in the circumferential direction and the vertical direction, and the distal end portions of which are provided with engaging members that engage with the outer circumference of the steel pipe oblique piles. Is characterized by. The means for watertightly inserting the steel pipe oblique pile includes a semi-short tubular body which is obliquely installed in each segment so as to surround the steel pipe oblique pile in the bottom wall of the shell, and between the semi-short tubular body and the steel pipe oblique pile. It is preferable that the ring-shaped packing having a wedge-shaped cross section is provided so as to be capable of being pushed in. Further, the drainage means of each of the buoyancy adjustment chambers is composed of a feed / exhaust valve provided on the upper wall of each buoyancy adjustment chamber and connected to the compressor, and a pouring / draining valve provided on the side wall of each buoyancy adjustment chamber. It is preferable.

[0005]

[Action]

 In the work box for the submerged steel pipe diagonal pile of the present invention, the unbalanced force due to the inclined shell is eliminated by adjusting the amount of air sent and discharged, that is, the amount of injected and discharged water for each buoyancy control chamber of both tanks, and the diagonal pile is sandwiched. The means are rotatable along the cylindrical wall of the shell. By constructing the means for making the steel pipe diagonal pile watertight by using both half-short cylinders and packing, when buoyancy acts on the work box, the watertightness increases and inspection and repair from inside the work box Is possible. Further, by constructing the pouring / draining means from the air supply / exhaust valve and the pouring / draining valve, air supply / exhaust or pouring / draining can be facilitated by air supply by the compressor and opening / closing of each valve.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3 and 4 are a plan view, a front view, a side view and a bottom view showing an embodiment of a work box for a submerged steel pipe oblique pile according to the present invention. In the figure, 1 is formed into a bottomed cylindrical shape having a cylindrical wall 4 inclined at a required angle with respect to a horizontal bottom wall 2, that is, an inclination angle of the underwater steel pipe oblique pile 3 (for example, 16.7 °). A shell consisting of a pair of segments 1a vertically divided in two in the inclination direction of the wall 4 (vertical direction in FIG. 1) and watertightly connected, and the underwater steel pipe oblique pile 3 is inserted in the center of the bottom wall 2 thereof. A diagonal pile insertion hole 5 is formed. Inside the bottom wall 2 at the peripheral portion of the oblique pile insertion hole 5, in order to make the insertion of the underwater steel pipe oblique pile 3 watertight, as shown in FIG. Is installed obliquely for each segment 1a, and a ring-shaped packing 7 having a wedge-shaped cross section is interposed between the semi-short cylindrical body 6 and the submerged steel pipe oblique pile 3 to form the semi-short cylindrical body 6a. It is provided so as to be able to be pushed downward by a half-ring-shaped pushing metal fitting 8 attached to the flange 6a.

As shown in FIGS. 1 to 3, tanks 9 each formed in the shape of a horizontal rectangular box are individually formed at one end (in FIG. 1) on the outer periphery of the upper portion of each segment 1 a of the shell 1. It is openable and closable with the segment 1a of the shell 1 through a hinge 10 at the lower end portion thereof, and is connected in a watertight manner to form a rectangular shape. The inside of each tank 9 is separated into two upper and lower parts by a horizontal partition wall 11 as upper and lower tanks 12 and 13, and the lower tank 13 is emptied at all times to function as a float. The inside of the buoyancy adjusting chamber 15 is divided into a plurality of buoyancy adjusting chambers 15 by a partition wall 14 which is separated in the direction of inclination of the cylindrical wall 4. Each buoyancy adjusting chamber 15 is provided on each upper wall and is connected to a compressor (not shown). The buoyancy can be adjusted to eliminate the unbalanced force due to the inclined shell 1 by the air supply / exhaust valve 16 and the pouring / draining valve 17 provided on each side wall.

A semi-ring work scaffold 18 is attached to each of the segments 1 a on the inner circumference of the upper portion of the shell 1. Further, as shown in FIG. 3, the underwater steel pipe diagonal pile 3 is sandwiched below the working scaffold 18 at the inner circumference of the shell 1 to fix the work box. A plurality of oblique pile holding means 20 composed of expandable and contractible jacks with engaging pad engaging members 19 attached to the tip end thereof are appropriately separated in the circumferential direction and the vertical direction, and the base end portion is attached to the cylindrical wall 4. It is pivotally mounted. Further, on the work scaffold 18, a work box is fixed in cooperation with the oblique pile holding means 20 and a buoyancy prevention stop (not shown) which also serves as a superstructure stand is placed. There is. On the other hand, on each tank 9, a U-shaped protection wall segment 21a which becomes a rectangular splash protection wall 21 by connecting both tanks 9 is erected. In FIG. 1 and FIG. 2, reference numeral 22 is a ramp for a worker to transfer from a boat or the like.

In the work box for a submerged steel pipe oblique pile having the above-described configuration, each buoyancy adjusting chamber 15 of the upper tank 12 is emptied, and the other end on the side opposite to the hinge 10 is temporarily fixed to the work box. After towing to the ground, remove the temporary stop and engage both the segments 1a with the underwater steel pipe diagonal pile 3 and the diver connects both the segments 1a and the tank 9 with the diagonal pile holding means 20 and the buoyancy prevention. The work box is fixed to the submerged steel pipe diagonal pile 3 by the stop frame. Since the buoyancy acting on the fixed position of the work box always changes due to the ebb and flow of the tide, the buoyancy and its own weight should be balanced exactly between the low and high tides so that the load acting on the whole is the smallest. . Further, in order to eliminate the unbalanced force due to the inclined shell 1, the amount of water injection into the buoyancy adjusting chamber 15 on the lower side (lower side in FIG. 1) of the shell 1 in both upper tanks 12 in the inclination direction is increased. To do. Water injection is performed by opening and closing the air supply / exhaust valve 16 and the water supply / drainage valve 17 as appropriate, and air supply is performed by connecting the air supply / exhaust valve 16 to a compressor and supplying air while the air supply / exhaust valve 16 and the water supply / drainage are supplied. The valve 17 is appropriately opened and closed. Then, the water in the shell 1 is drained to complete the attachment of the work box.

[0010]

[Effect of device]

 As described above, according to the work box for the submerged steel pipe diagonal pile of the present invention, the unbalanced force due to the sloping shell is adjusted by adjusting the feed / exhaust amount of each buoyancy adjusting chamber of both tanks, that is, the pouring / discharging amount. As the buoyancy is eliminated, the buoyancy can be easily adjusted and can be easily applied to the submerged steel pipe oblique pile. Further, since the oblique pile holding means can be rotated along the shell wall of the shell, it is possible to prevent interference between the oblique pile holding means and the underwater steel pipe oblique pile when the work box is engaged with the underwater steel pipe oblique pile. The above engagement work can be easily performed. On the other hand, by constructing the means for making the insertion of the steel pipe diagonal pile watertight, by constructing both semi-short cylinders and packing, it is possible to increase the watertightness when buoyancy acts on the work box and to inspect it. Repairs can be done from inside the work box. Further, by constructing the pouring / draining means from the air supply / exhaust valve and the pouring / draining valve, air supply / exhaust or pouring / draining can be easily performed by air supply by the compressor and opening / closing of each valve.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a work box for a submerged steel pipe oblique pile according to the present invention.

FIG. 2 is a front view of the work box of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

5 is an enlarged view of a main part of the work box in FIG. 1. FIG.

[Explanation of symbols]

 1 Shell 1a Segment 2 Bottom wall 3 Submersible steel pipe oblique pile 4 Cylindrical wall 5 Oblique pile insertion hole 6 Semi-short cylindrical body 7 Packing 8 Push-in fitting 9 Tank 10 Hinge 12 Upper tank 13 Lower tank 14 Partition wall 15 Buoyancy control chamber 16 Transmission / exhaust valve 17 Injection and drainage valve 18 Working scaffold 19 Engagement member with pad 20 Oblique pile clamping means

Claims (3)

[Scope of utility model registration request] 1. A pair that is formed in a bottomed cylindrical shape having a cylindrical wall that is inclined at a required angle with respect to a horizontal bottom wall, and that is vertically divided into two in the inclination direction of the cylindrical wall and is watertightly connected. And a shell in which a diagonal pipe insertion hole for watertightly inserting a steel pipe diagonal pile is formed in the center of the bottom wall, and a horizontal rectangular box shape is individually formed on the upper outer periphery of both segments of the shell. , A plurality of buoyant forces which are openable and closable through a hinge at one end and water-tightly connected to each other, and an inner upper stage that is airtightly separated into two upper and lower stages has a drainage means by a partition wall separated in the inclination direction of the cylinder wall A rectangular tank divided into adjustment chambers, a semi-ring work scaffold attached to each segment on the upper inner circumference of the shell, and a circumferential and vertical direction on the inner circumference of the shell below the work scaffold. The base end is pivotally attached to A work box for an underwater steel pipe oblique pile, comprising: a plurality of expandable and contractable oblique pile holding means having an engaging member attached to the outer periphery of the steel oblique pipe pile at one end. 2. A means for watertightly inserting the steel pipe oblique pile, wherein a semi-short tubular body surrounding the steel pipe oblique pile in the bottom wall of the shell and obliquely provided for each segment, both semi-short tubular bodies and the steel pipe. The work box for a submerged steel pipe oblique pile according to claim 1, comprising a ring-shaped packing having a wedge-shaped cross section, which is provided so as to be capable of being pushed between the oblique pile and the oblique pile. 3. An effluent / drainage valve for each buoyancy adjusting chamber, wherein the effluent / drainage means is provided on an upper wall of each buoyancy adjusting chamber and is connected to a compressor, and an irrigation / drainage valve provided on a side wall of each buoyancy adjusting chamber. The work box for a submerged steel pipe oblique pile according to claim 1 or 2, comprising: