JPH0979423A - Transport pipe crossing technique - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly cross a transport pipe for supplying compressed air or various materials from a supply device interposed at one bank on a river to a pneumatic caisson position interposed at the other bank. SOLUTION: In a pneumatic caisson method for positioning the settled part 3 of a caisson skeleton 2 in one bank 6 beyond a river 1 and for supplying compressed air to the settled part 3 through an airline 4 from a compressor 18 interposed on the other bank 7, an overhead wire 8 formed of a wire rope, etc., is erected toward both the banks. The airline 4 is suspended from and supported by the overhead wire 8 by using a fitting 9. Thus, the airline 4 is led to the other bank from one bank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport pipe crossing method for transporting compressed air, various materials and the like across a river or the like (that is, including the sea, etc.) in a pressure submersion method. .

[0002]

2. Description of the Related Art In the pneumatic submersion method, a river may exist between the position where the caisson frame is sunk and the position where the compressed air or various materials to be transported to this position are installed. In such a case, a jetty is temporarily installed in the river, and a transport pipe is arranged along the jetty to cross the river to supply air to a submerged position on the opposite bank.

[0003]

However, due to various conditions, it may not be possible to temporarily construct a jetty in a river. In this case, the transportation pipe cannot be crossed, and as a result, the caisson skeleton is sunk to the submerged position. There is no choice but to install a compressor and other devices. Therefore, when there are submarine positions on both banks of the river, for example, in compressed air supply, two compressors must be arranged corresponding to each submarine position on both banks. There is a problem that equipment costs and construction costs are higher than in the case where compressed air is sent to two submerged positions from an air compressor that crosses a river from a compressor of a stand.

It is an object of the present invention to provide a transportation pipe crossing river construction method that solves the above problems.

[0005]

In order to achieve the above-mentioned object, the transportation pipe crossing river construction method according to the present invention is such that a submerged portion 3 of a caisson skeleton body 2 is located on one side of a shore 6 with a river 1 or the like separated.
In the submarine method of supplying compressed air, various materials, and the like from the supply device 5 arranged on the other shore 7 to the submerged portion 3 via the transportation pipe, an overhead wire 8 such as a wire rope is provided to both shores. It is characterized in that the transportation pipe is erected, and the transportation pipe is hung and supported on the overhead wire 8 by using a mounting bracket 9 to guide the transportation pipe from one bank to the other bank. The transport pipe is configured by connecting the ends of a plurality of unit pipes 4a to each other, and the mounting metal fitting 9 sandwiches the joint portion 10 of the unit pipe 4a and is fixed on both sides thereof. A metal fitting body 14 composed of a joint expansion prevention stopper 12 and a pipe swaying prevention stopper 13 which are arranged in pairs above and below the unit pipe and whose both ends are joined to the pipe fastening metal fitting 11, and a metal fitting body 14 14 and the overhead wire 8 may be connected to each other. The overhead line 8 and a plurality of transport pipes suspended and supported by the overhead line 8 are arranged in parallel, and one transport pipe can be alternately used as a preliminary transport pipe through the other transport pipe through a valve switching unit. A space holding member 16 may be provided between the two transport pipes.

According to the present invention, even when a jetty for a transportation pipe cannot be erected in the river 1, compressed air and various other materials can be evacuated by the transportation pipe hung on an overhead line 8 erected above the river. Can be smoothly transported to the opposite bank.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. 1 and 2 are front explanatory views showing an embodiment of the present invention, FIG. 3 is a plan view, and FIG. 4 is a side explanatory view. As shown in each figure, a submerged portion 3 in which a caisson skeleton body 2 is submerged on one side of a river 1 with a river 1 sandwiched therebetween.
There is a working room 17 for the caisson frame 2 on the other bank 7.
As a specific example of the supply device 5 of the present invention via a pipe, a compressor 18 for supplying compressed air is provided.

Compressed air is sent from the compressor 18 to the working chamber 17 of the caisson skeleton 2 through a transportation pipe, and the transportation pipe crosses the river 1. A pillar 19 made of H steel piles is built on the banks 6 and 7, and an overhead wire (main wire) 8 is installed between the upper ends of the pillar 19, and an air pipe which is a specific example of a transport pipe is installed on the overhead wire 8. Suspend 4 to cross over the river 1. Further, the tip of the air supply pipe 4 is connected to the caisson body 2 by a connecting pipe 21.
The connection pipe 22 is connected to the proximal end of the air supply pipe 4, and the connection pipe 22 is guided to the compressor 18.

Therefore, the compressed air from the compressor 18 is supplied to the working chamber 17 in the caisson skeleton 2 along the path of the connection pipe 22, the air supply pipe 4, and the connection pipe 21.

More specifically, both banks of the river 6,
7, a pillar 19 of a predetermined height using the above-mentioned H steel pile is erected, side stay wire ropes 23 are pulled down from the upper part of the pillar 19 to both sides, and the lower end of the side stay wire rope 23 is It is fixed to a side stay anchor 25 made of an H steel pile driven on the ground 24.

Further, three guide sheaves 26 are arranged at the upper ends of the columns 19, and the river 1 is crossed to each guide sheave 26, and three overhead lines 8 which are laid in parallel above the river 1 are bridged. The end of the overhead wire 8 pulled down via the guide sheave 26 is fixed to a backstay anchor 27 made of an H steel pile placed in the ground. Also,
A backstay wire rope 61 is stretched from the upper part of the column 19 to the backstay anchor 27. Further, a stay wire rope 63 is stretched around a stay anchor 62 that is struck from above the overhead wire 8 toward the inside of the column 19.

Of the three overhead lines 8, two adjacent overhead lines 8 are provided with two air supply pipes 4 suspended and supported in parallel with the overhead lines 8 by means of fittings 9. The main air supply pipe 4 is a main pipe, and the other one is arranged as a spare air supply pipe 4b. Then, each of the air supply pipes 4 is pulled down along the stanchions 19 on both banks 6, 7 and is connected to the connection pipes 21 and 22. As described above, one of the connection pipes 22 is guided to the compressor 18. And
The other connecting pipe 21 is introduced into the working chamber 17 of the caisson frame 2.

As shown in FIG. 8, the air supply pipe 4 has two main and auxiliary pipes arranged in parallel with each other. , 29 are connected to both ends of the branch connection pipe 30, connection pipes 21 and 22 are connected to the left and right branch connection pipes 30, respectively, and one connection pipe 22 is guided to the compressor 18 and the other. The connection pipe 21 is the working room 17 of the caisson body 2.
Have been led to.

Further, a drain pipe 32 having a solenoid valve 31 is provided at an intermediate portion of each of the air supply pipes 4 (this position is the lowest position of the air supply pipe 4 which is hung from the overhead line 8 and curved downward).
Is connected, and the air supply pipe 4 is connected through the water drain pipe 32.
If water accumulates inside the, it can be easily drained.

The air supply pipe 4 includes a plurality of unit pipes 4a,
By connecting at the pipe joint portion 10, it is configured as a long pipe.
In addition to the function of suspending and supporting the air supply pipe 4 on the overhead line 8,
It is configured to have both the expansion preventing function of the pipe joint portion 10 and the shaking preventing function of the air supply pipe 4 such as vertical shaking and horizontal shaking.

Explaining with reference to FIG. 9 to FIG. 15, the end portion of each unit tube 4a of the air supply pipe 4 is slightly thick as shown in FIG. 15, and an annular packing is formed in a groove formed in this thick portion. 33 is attached, and the arcuate half-split member 35 of the pipe joint fitting 34 is brought into contact with the thick portion so as to come into pressure contact with the annular packing 33. Then, the fastening bolts 37 are inserted into the bolt holes of the both end ears 36 of each arcuate half-split member 35, and the nuts 38 are screwed into the fastening bolts 37, whereby each arcuate half-split member 35 is attached to the unit pipe 4a. Tightened to the outer periphery of the pipe joint 10
Is to join.

At the pipe joint 10, since the air supply pipe 4 is long and is suspended by the overhead wire 8, a force for pulling out the pipe end of the unit pipe 4a from the pipe joint fitting 34 acts. To do. Further, since the air supply pipe 4 is long and is suspended and supported above the overhead line 8, there is a risk that the entire air supply pipe 4 will sway and roll like a wave due to strong wind.

In order to solve the above-mentioned problems, the mounting metal fitting 9 of the present invention has a unit pipe with a pipe joint portion 10 whose ends are connected by a pipe joint metal fitting 34 as shown in FIG. The pipe fasteners 11 are fixed to the 4a in pairs.

As shown in each of the drawings, the pipe fastening metal fitting 11 faces a pair of fastening portion pieces 40 having a curved portion 39 having the same curvature as that of the air feeding pipe 4, and holds the air feeding pipe 4 at the curved portion 39. Then, by inserting the bolt 43 into the bolt holes of the upper and lower portions 41, 42 of each fastening portion piece 40 and fastening the nut 44 thereto, the pipe fastening fitting 11 can be fixed to the air supply pipe 4.

Further, a strip plate-shaped joint expansion preventing stopper 12 and a pipe shaking prevention stopper which are located between the left and right pipe fastening members 11 and which are paired in parallel with each other in the vertical direction of the pipe joint portion 10 are provided. 13 is provided, and both ends of each stopper are connected to the pipe fastening fitting 11 by connecting bolts 45.

A metal fitting body 14 is composed of the left and right pipe fastening fittings 11, the joint expansion preventing stopper 12 for connecting the left and right fittings, and the pipe shaking preventing stopper 13.
Further, both ends of a connecting metal fitting (shackle) 15 in which the U-shaped bent portion is engaged with the overhead wire 8 are overlapped with both end rising portions 46 integrated with the joint expansion preventing stopper 12, and a bolt hole formed in this overlapping portion. The connecting metal fitting 15 is joined to the metal fitting body 14 by inserting a bolt 47 into the bolt and screwing a nut 48 into the bolt 47.

Therefore, the air supply pipe 4 is suspended and supported by the overhead wire 8 via the metal fitting body 14 and the connecting metal fitting 15 having the above-described structure, and the pipe joint 10 does not expand, and the air supply pipe is not expanded. 4 is suppressed from pitching due to strong wind.

Since the main pipe and the spare pipe are arranged in parallel with each other in the air supply pipe 4, the left and right air supply pipes 4 and 4a are arranged so that the two air supply pipes 4 and 4a do not sway and contact with each other due to strong wind. The spaces 4a are held by a plurality of space holding members 16 arranged at appropriate intervals. The space | interval holding member 16 has two half-divided members 49 which hold each air supply tube 4 in order to have the simplest structure.
A fastening member 52 is formed by fastening a bolt 50 and a nut 51 between them, and a width stop member 55 is formed by fastening a bolt 53 and a nut 54 between the left and right fastening members 52.

The space holding member 16 prevents the left and right air supply pipes 4 from rolling laterally by a strong wind, and even if they roll sideways, the left and right air supply pipes 4, 4a maintain a predetermined distance. The problem of being contacted with each other is eliminated. It should be noted that the spacing member 16 may be disposed at an intermediate portion of the mounting member 9 disposed at a predetermined spacing in the longitudinal direction, and both the vertical swing and the horizontal swing of the air supply pipe 4 due to the strong wind are caused by both members. It is effectively prevented by acting as.

In the embodiment of the present invention, since three overhead lines 8 are installed in parallel, in addition to the above two overhead lines 8, another remaining overhead line 8 is not provided. A polyethylene pipe 56 is suspended and supported by using the same connecting fitting 15 as the air supply pipe 4, a hanging fitting 58 and bolts and nuts 59 and 60. Electric wires 57 such as a power line and a telephone line are inserted into the polyethylene pipe 56, and these wires are indirectly suspended from the overhead line 8 to cross the river.

[0026]

As described above, according to the method for constructing a transportation pipe according to the present invention, the air pipe 4 and the like are transported by using the fittings 9 on the overhead wire 8 such as a wire rope laid on both sides of the river 1. Since the transport pipe is guided from one bank to the other by suspending and supporting the pipe, even if a jetty for crossing the transport pipe cannot be temporarily installed in the river due to various conditions, the transport pipe can be smoothly moved over the river. You can cross the river and use this transportation pipe to smoothly transport compressed air and various materials to the opposite bank.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a side view of FIG.

FIG. 5 is an enlarged view of a side anchor.

FIG. 6 is an enlarged front view of an upper portion of a column.

FIG. 7 is an enlarged side view of the upper part of the support column.

FIG. 8 is an explanatory diagram showing a system of an air supply pipe.

FIG. 9 is a perspective view showing a fitting and an interval holding member for attaching an air supply pipe to an overhead wire.

FIG. 10 is a plan view of FIG.

FIG. 11 is an enlarged perspective view of a mounting member.

FIG. 12 is a sectional view taken along line AA of FIG. 10;

13 is a cross-sectional view taken along the line BB of FIG.

14 is a cross-sectional view taken along the line CC of FIG.

FIG. 15 is a sectional view taken along line DD of FIG. 14;

[Explanation of symbols] 1 river 2 caisson skeleton 3 subsidence part 4 air supply pipe 4a unit pipe 5 supply device 6 shore 7 shore 8 overhead wire 9 mounting bracket 10 pipe joint 11 pipe fastening bracket 12 joint expansion prevention stopper 13 pipe shaking Prevention stopper 14 Metal fitting body 15 Coupling metal fitting 16 Spacing member 17 Working chamber 18 Compressor 19 Strut 21 Connection piping 22 Connection piping 23 Side stay wire rope 24 Ground 25 Side stay anchor 26 Guide sheave 27 Back stay anchor 28 Solenoid valve 29 Solenoid valve 30 Branch pipe 31 Solenoid valve 32 Drain pipe 33 Annular packing 34 Pipe fitting metal fitting 35 Arcuate half-split member 36 Both-end ears 37 Fastening bolt 38 Nut 39 Curved portion 40 Fastening piece 41 41 Upper 42 Lower 43 Bolt 44 Nut 45 Connecting bolt 46 Both ends rising part 47 Lut 48 Nut 49 Half-divided member 50 Bolt 51 Nut 52 Tightening fitting 53 Bolt 54 Nut 55 Width stop material 56 Polyethylene pipe 57 Electric wires 58 Hanging fitting 59 Bolt 60 Nut 61 Back stay wire rope 62 Stay anchor 63 Stay wire rope

Claims (3)

[Claims] 1. A submerged portion 3 of a caisson skeleton body 2 is located on one shore 6 across a river 1 and the like, and a supply device disposed on the other shore 7 via a transportation pipe in the submerged portion 3. In the submarine construction method of supplying compressed air, various materials, etc. from 5, an overhead wire 8 such as a wire rope is erected on both banks, and a transportation pipe is hung and supported on the overhead wire 8 using a mounting bracket 9. Then, the transportation pipe crossing method is characterized in that the transportation pipe is guided from one bank to the other bank. 2. The transportation pipe is configured by connecting the ends of a plurality of unit pipes 4a to each other, and the mounting fitting 9
Are arranged as a pair above and below the unit pipe 4a and a pipe fastening metal fitting 11 that is fixed to both sides of the joint 10 of the unit pipe 4a, and both ends are connected to the pipe fastening metal 11. The metal fitting body 14 comprising a joint expansion preventing stopper 12 and a pipe shaking prevention stopper 13 and a connecting fitting 15 for connecting the metal fitting body 14 and the overhead wire 8 to each other. Transportation pipe crossing river construction method. 3. The overhead line 8 and a plurality of transport pipes suspended and supported by the overhead line 8 are arranged in parallel, and one transport pipe serves as a preliminary transport pipe via the other transport pipe and a valve switching section. A structure which is provided so that it can be used alternately, and is held by a spacing member 16 between the two transport pipes.
Transport pipe construction method described in.