JPS62296061A - Apparatus for reinforcing work of underwater steel pipe support - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention provides reinforcement using concrete or steel plate welding or composite 81 Underwater rI for applying anti-corrosion coatings with grease
This invention relates to a device for reinforcing A-tube struts.

(Prior Art) Conventionally, a device for reinforcing underwater steel pipe struts has been of an integrated type in which a bottom portion having an insertion hole into which a steel pipe strut to be reinforced is inserted is integrally connected to the lower end of a cylindrical til. Ta.

Since such reinforcement work devices are large, they are transported from the manufacturing factory to the site of use by barges or cargo ships instead of by trucks.

(Problems to be Solved by the Invention) In the case of the above-mentioned conventional device, since the device is integrated and cannot be manufactured in minutes, the transportation cost is high because the device must be transported by a large barge or cargo ship. There are some points to check, and since it is an integrated type, it cannot be used unless a certain water depth is secured.Furthermore, if the diameter of the steel pipe to be reinforced exceeds a certain level, the work space becomes narrow and the reinforcement work cannot be carried out. The problem was that it became difficult.

In view of the above-mentioned conventional problems, the present invention reduces transportation costs by transporting by truck, allows the height to be changed depending on the depth of the water at the work site and the depth of the reinforcement target, and also makes it possible to perform repairs. The purpose of the present invention is to provide a device for reinforcing underwater steel pipe struts that can be expanded in response to changes in the diameter of the target steel pipe and can always secure a working base.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a bottomed cylindrical partition wall for forming a working space, at least a portion of which is connected so as to be openable and closable. Equipped with a steel pipe support insertion hole in the center,
The bulkhead is equipped with a float that floats the entire body above the water surface, and is equipped with a working scaffold and an m-tube support holding means inside to float the bulkhead above the water and maintain watertightness around the outer periphery of the submerged tJ4 pipe support. and install it, its rA
In a device for reinforcing underwater steel pipe struts in which a working space is formed by discharging water inside the wall, the cylindrical side of the partition is formed by stacking a plurality of annular side units divided into sections. Further, the annular side unit is interposed between a divided side unit having an arcuate cross section and a longitudinally divided end portion of the divided side unit, and is separably joined to each other. Refill side unit 1-
It was constructed with the characteristic that it was steep.

(Function) The device for reinforcing underwater steel pipe struts according to the present invention includes the divided side unit 1-1 supplementary side unit and the divided bottom plate manufactured at the manufacturing factory, which are loaded onto a truck and transported by land to the site of use without assembly. However, depending on the depth of the water at the work site and the height and thickness of the underwater steel pipe struts to be reinforced, the number of stacked annular side units may be increased to 51, or the supplementary side units that are separably joined may be attached and detached. correspond to each other by
It is something that

(Example) An example of the present invention will be described with reference to the drawings, taking as an example a device for reinforcing a large underwater steel pipe branch installed at the bottom of a bridge.

Fig. 1 is a perspective view showing the main parts of the reinforcement work equipment of the underwater steel pipe branch according to the FM @ of the present invention, Fig. 2 is a longitudinal sectional view of the same, and Fig. 3 is a partial cross-section of E of the same. FIG.

Reinforcement work equipment (maji) is aimed at the underwater steel pipe branch 2 installed at the bottom of the construction 1, and includes a cylindrical side part 3 surrounding the part to be reinforced of the FA pipe support 2, and a steel pipe support insertion hole 4 in the center. A working space is formed on the outer periphery of the steel pipe support 2 by a partition body 6 composed of divided bodies 6a, 6a divided by n from the bottom 5 on the right, and the outer diameter of the steel pipe support 2 and the height of the part to be repaired are It is possible to adjust the width and height of the working space inside the m-wall body 6 in accordance with this.

A cylindrical side part 31, a plurality of annular side units 3 having the same shape
A are overlapped with each other through a watertight packing I, and the upper and lower flanges 7a, 7a fixedly protruding from the inner and outer peripheries of the upper and lower adjacent annular side units 3a, 3a are combined to form the structure shown in FIG. 5(C). Similarly, the annular side units 3a are connected by tightening with nuts 8.8, and the overall height is adjusted by adjusting the number of stages in which the annular side units 3a are stacked and separably connected. can be adjusted.

Each annular side unit 3a is equally divided into four divided side units 3b each having a hollow fan-shaped cross section of the same quarter;
Replenishment m that replenishes each joint end section to which each divided side unit a'0 is joined and has a mutually identical hollow rectangular cross section.
It is formed by joining the first unit 3C to each other. One part unit 3b and replenishment side unit 3C
Flanges 7b, 7b are fixedly protruding from the outer surface of the joint end of the phase 22 in the vertical direction, and each unit that is adjacent to
, 7b with a watertight gasket 9 interposed between them, and are fastened with a hole and a gut 8.8, so that they can be joined in a watertight and separable manner. The size of the annular side unit 1-38 can be changed depending on whether supplementary side units 3c, 3c are interposed or not, as will be described later.

The uppermost annular side unit 1-3a has its upper end connected to the top plate 3d together with each divided side unit 3b and supplementary side unit 3C.
, 38'C-The air supply pipe 10 and the exhaust pipe 111, which are closed and communicate with the inside of each divided side unit 3b through the top plate 3d, have an air supply valve 10a and an exhaust valve 11a interposed therebetween, respectively. It is fixed to each of the top plates 3d.

The annular side units 3a of each stage are arranged such that one of the joining ends of the supplementary side units 3c, 3c that are in contact with each other are pivoted to each other with the number a 12 as shown in FIG. The joining ends of the supplementary side units 3C, 3C in position are releasably fixed to each other with fasteners 13.

On the inner surface of the annular side unit 1-38, there is an underwater steel pipe support 2.
Work scaffolds 14.14 are removably fixed at every other stage around the periphery so as to form a ring shape as a whole.

The divided side units 3b of each stage other than the top stage include a top plate 3d and a bottom plate 3f1. : each divided side unit 3I having openings 3g and vertically adjacent to each other by these openings 3g)
are in communication with each other, and external water can freely flow through the opening 3g of the bottom plate 3f of the lowermost divided side unit 3b, and the cylindrical side part 3 as a whole also serves as a float. This float allows the entire musical score to float on the water surface. Uppermost ring-shaped side unit 3
By opening and closing the air supply valve 10a and exhaust valve 11a provided at the upper end of a, and injecting or discharging pressurized air through the air supply pipe 10 and exhaust pipe 11, each divided vA housing unit 1 to 3 is
The water level in b is adjusted to make the buoyant force 7J4, and the horizontal or weight t1 is adjusted to compensate for the inclination during levitation.

Furthermore, a ramp 15 is fixed to the inner surface of the cylindrical side portion 3 for allowing a worker to ascend and descend along the vertical direction.

FIG. 4 is a plan view showing the bottom portion 5. FIG.

The bottom portion 5 is formed by connecting divided bottom plates 5a that are divided into four equal parts along the radial direction of the central underwater steel pipe support insertion hole 4 so as to be separable from each other.

Each divided bottom plate 5a has an inner circumference on the outer periphery of the external cause divided bottom plate 5b and external cause supplementary bottom plate 5C corresponding to the divided side unit 3b and supplementary side unit 3C of the annular side unit 1-3a of the chasing section and the outer periphery of the underwater steel pipe support 2. An inner circumferential split bottom plate 5d whose edges face each other,
It is composed of a relay replenishment bottom plate 5e disposed between these.

The inner periphery divided bottom plate 5d divides a square into four parts, each having a quarter-circular notch that forms a steel pipe support insertion hole 4 into which the TL pipe support 2 is inserted in the center of the whole.

The external cause division bottom plate 5b is the annular side unit 3 at the bottom.
Corresponding to each of the divided side units 3b of 3a, the lower ends of the divided side units 31) are joined together with their arcuate outer peripheries, and a notch is provided at the inner periphery. This notch has a shape obtained by cutting out a quarter square from a quarter million yen, and has a shape that can circumscribe the inner peripheral divided bottom plate 5d.

The outer supplementary bottom plate 5C has a rectangular shape and is integrally joined to the lower end of the supplementary side unit 3C corresponding to each of the lowermost supplementary side units 1-30, and is circumscribed to the inner circumferential divided bottom plate 5d. Each outer circumferential divided bottom plate 51j is separably joined.

5b and are separably joined to each other.

The relay replenishment bottom plate 5el has a square shape, and is separably joined to a square portion surrounded by the notch of each outer peripheral divided bottom plate 5b and the edge of the outer peripheral replenishment bottom plate 5C.

The above-mentioned joint parts of the bottom part 5, like the joint parts of the side part 3, are fastened to each other through watertight barragins through the 7 langes and nuts.

A steel pipe support insertion hole 4 opened at the center of the bottom 5 of the partition wall 6
A watertight backing tube 16 is installed on the outside of the peripheral edge of the backing tube 16, and by injecting pressurized air into the tube from an air injection nozzle (not shown) introduced into the partition wall 6, the flight tube branch 2 and The gap with the steel pipe support insertion hole 4 is sealed.

A steel pipe support support lever 17 is provided on each divided bottom plate 5a inside the partition body 6. These holding turns are four-way jacks 18.18 from the inner surface of the cylindrical side part 3 toward the center.
... and one IM pipe suppression pad attached to the moving end of each jack, and by extending each jack one day and sandwiching the branch office 2 in the center of each pad 19, it is possible to suppress the branch office 2. and fixed.

Further, a submersible pump 20 is installed on the upper surface of the bottom portion 5,
The operation of the pump 20 prevents water from being discharged through the drain pipe 21 that rises along the inner surface of the side part 3 and is led out to the outside, and prevents water seeping into the partition wall 6 from accumulating. Space is secured.

Next, a method of using the apparatus according to this embodiment will be explained.

The device is assembled near the site of use, mainly consisting of the above-mentioned RA wall body 6, is towed to the position of the support column 2 by a tugboat (not shown), the fasteners 13 of the bulkhead body 6 are removed, and the divided body 6a is assembled.
, 5a are spaced around the hinge 12, and moved on the water so that the support 2 is positioned in the central steel pipe support insertion hole 4, and then water is poured into each float as necessary to increase the buoyancy 51.
Adjust the height of the partition wall body 6 to the mounting height position and install the one-car divided body 6a.

Close 6a.

At this time, the periphery of the partition wall 6 is sealed with a packing 16. Thereafter, each jack 18 of the steel pipe column holding means 17° 17 is moved by a hydraulic pump (not shown) provided outside the partition body.
．． 18 .

After that, the submersible pump 20 is operated to discharge the water inside the partition wall 6 to form a working space inside the partition wall 6. After that, the submersible pump 20 is continued to be operated to remove water that seeps into the partition wall body 6. Drain the water that comes out.

In this manner, the partition wall 6 is attached to the vR, and with a working space formed and maintained inside the partition wall 6, the pillars 2
Necessary reinforcement work can be carried out.

After the reinforcement work is completed, if the next reinforcement target is nearby, remove the fasteners 13, open the divided bodies 6a, 6a, remove the entire R wall 6 from the support 2, and tow it on the water. Then perform the following reinforcement work. In addition, if the next production station is far away, it can be disassembled into appropriate sizes and transported overland by truck.

FIG. 5(a) shows that the present invention was applied to a small steel pipe support with a small outer diameter. ! FIG. 101 is a diagram showing one embodiment of the most popular riding equipment. In this case] 1/e side part 23
This is the same as in the previous embodiment in which a large JA pipe support is used, except that the bottom portion 25 is made smaller as a whole.

In this case, the annular side unit 2 constituting the cylindrical side part 23
3a1, as shown in FIGS. 5(b) and (C), excluding the capture side unit 1-3C used in the subcommittee of the above embodiment,
The split side unit 3b with a quarter n-shaped cross section can be used as is.
4], the flanges 7a, 7a and f7b, 711 are assembled into a cylindrical shape with 4 knots 1-8 with a watertight packing 9 interposed therebetween.

Also, the bottom part 25 is divided into 25. - i split side uni! It is composed of an outer circumference divided bottom plate 5b corresponding to the bottom plate 3b and an inner circumference divided bottom plate 5d, and these units used in the above embodiment are used as they are, joined to the base, and assembled into a circle. It will be done.

FIG. 6 is a rough sectional view showing an embodiment in which each of the plurality of divided side units 33b constituting each annular side unit 1-338 is made into an independent sealed type and is made into an independent float.

In this case, in each divided side unit 33b, an upper inlet/exhaust column 30 and a lower inlet/drain pipe 31 communicating with the interior are attached to two upper and lower locations protruding from the outer peripheral surface via valves 30a and 31a, respectively. There is.

To explain the injection and drainage method in this case, the injection and exhaust pipe 3
7 (a) and (b) when the float is above the water surface and the valves 30a and 31a of the water supply and drain pipe 31 are opened.
”), the forced water injection 34a by one pump and the natural drainage 34b by internal water pressure are carried out 1:'i through the water injection package 31, and when the float is under the water surface,
As shown in FIGS. 7(C) and (d), natural water injection 34a and -
Forced drainage 34b can be performed by injecting pressurized air 35 from the upper injection/exhaust pipe 30.

(Effects of the Invention) The present invention is configured as described above, and the cylindrical side portion of the partition body is formed by overlapping and separably connecting a plurality of horizontally divided annular side units, thereby reinforcing steel pipe struts. The height can be easily changed according to the height of the work and the water depth of the work site. is $l of said annular side unit! By joining the split bottom plate that is divided into multiple parts according to the split so that they can be separated,
Wll12 is a supplementary side unit that can be transported overland by truck, reducing transportation costs, and is interposed between the longitudinally divided ends of each divided side unit and separably joined.
By doing so, the inner diameter of the partition body can be changed,
Always secure work space for steel pipe supports of various thicknesses! : It has the effect of ru.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of a device for reinforcing underwater steel pipe struts according to an embodiment of the present invention, FIG. 2(a) is a longitudinal sectional view of the same, and FIG. 2(b) is a replenishing side. FIG. 3 is a partial cross-sectional view of the same as above, FIG. 4 is a plan view showing the bottom, and FIG. A cross-sectional view showing an example, FIG. 5 (
b) is a detailed plan view of part A in Fig. 5<a), Fig. 5(C)
is a view taken along arrow B-8 in Fig. 5(a), Fig. 6 is a vertical sectional view showing an example of a side protrusion, and Figs. 7(a) to (l) show a method of pouring water into the float. FIG. DESCRIPTION OF SYMBOLS 1... Pier, 2... Underwater steel pipe support, 3... Cylindrical side part, 3a... Annular side unit, 3b... Divided side unit, 3C... Replenishment side unit, 3d, 3e
...Top plate, 3f...Bottom plate, 3g...Opening, 4...
・Steel pipe support insertion hole, 5...! ! Part, 5a... Divided bottom plate, 5b... Outer circumference divided bottom plate, 5C... Outer circumference supplementary bottom plate, 5d... Inner circumference divided bottom plate, 5e... Intermediate supplementary bottom plate,
6...Partition body, 6a...Divided body, 7a, 7b...
Flange, 8... Bolt/narrow 1-19... Watertight gasket, 10... Air supply pipe, 10a... Air supply valve, 11
...Exhaust pipe, 11a...Exhaust valve, 12...Hinge,
13... Fastener, 14... Work scaffold, 15... Ramp, 16... Backing tube, 17... Steel pipe support holding means, 18... Jacket, 19... Steel pipe suppression pad, 20... Pump, 21... Drain pipe, 2
3... Cylindrical side part, 23a... Annular side unit, 2
5...Bottom, 25a...Divided bottom plate, 3o...-Inlet/exhaust pipe, 31...Inlet/outlet pipe, 30a, 31a...Valve,
33a...Annular side unit, 33b...Divided side unit, 34a...Water injection, 34b...Drainage, 35
...Pressure air. Patent applicant: Pentayo Construction Co., Ltd./f~・1, agent: Patent attorney Sasaki
Gong (゛ ・1 Figure 1 Figure 3 Figure 4 Figure 6

Claims (1)

[Claims] A cylindrical working space-forming partition with a bottom connected to open and close at least a portion of the partition, a steel pipe support insertion hole in the center of the bottom of the partition, and a float that floats the entire partition above the water surface. At the same time, a working scaffold and a steel pipe support holding means are provided inside, and the partition body is floated above the water and attached to the outer periphery of the underwater steel pipe support while maintaining watertightness, and the water inside the partition body is discharged. In the apparatus for reinforcing underwater steel pipe struts, the cylindrical side part of the partition body is formed by stacking and separably connecting a plurality of horizontally divided annular side units, Further, the annular side unit includes a divided side unit having a circular arc cross section that is vertically divided into a plurality of pieces, and a supplementary side unit that is interposed between the vertically divided end portions of the divided side unit and is separably joined. A device for reinforcing underwater steel pipe supports, characterized by: