JP3973119B2 - Method and apparatus for moving underwater structure underwater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underwater structure moving method for moving a structure suspended in water to a predetermined position in water, and in particular, an underwater movement method such as underwater movement for fixing the underwater structure and movement during temporary installation. And an apparatus.
[0002]
[Prior art]
Conventionally, the installation of submerged tunnels and other caissons is carried out by suspending the structure while hanging underwater with a crane ship, or by levitating it and connecting it to a trolley, etc. Or, it was installed while hanging on a trolley. However, since such a conventional method requires a crane ship or a trolley to hang, it is necessary to occupy the sea surface and secure a work occupation area when there is a channel or the like.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the above, and it is an object of the present invention to provide an underwater structure moving method and apparatus for installing an underwater structure without occupying the sea surface such as a navigation channel.
[0004]
[Means for Solving the Problems]
According to the underwater structure moving method for an underwater structure of the present invention, in the underwater structure moving method for moving the structure suspended in water to a predetermined position in the water, a plurality of wires provided in the underwater structure is provided. A wire is fastened to each of the tightening devices, connected to a wire joint that detachably holds each of the wires, an underwater jack for expanding and contracting the wire is attached to the wire joint, and a plurality of bottom anchors are installed on the bottom of the water. The other end of the anchor wire fastened to each of the water bottom anchors is fastened to the wire joint, and the plurality of wires are expanded and contracted by the underwater jack to move the underwater structure vertically and horizontally.
[0005]
Further, according to the underwater moving device for an underwater structure of the present invention, in the underwater moving device for an underwater structure for moving a structure suspended in water to a predetermined position in water, a plurality of the underwater structures provided in the underwater structure are provided. The wire tightening device is connected to a wire joint that detachably holds each of the wires, and an underwater jack for extending and contracting the wire is attached to the wire joint, and a plurality of water bottom anchors are attached to the water bottom. It is installed, a plurality of anchor wires are fastened to each of the bottom anchors, and the ends of the respective anchor wires are fastened to the wire joint.
[0006]
According to the above invention, when the dimensions of the plurality of wires clamped by the wire tightening device provided in the underwater structure and gripped by the underwater wire joint are expanded and contracted by the underwater jack, the wire jack and the specific pre-installed The position of the bottom of the water is specified by an anchor wire fastened to the bottom of the water, and the underwater structure can be moved both in the vertical direction and in the horizontal direction. Increasing horizontal movement can be accomplished by replacing the anchor wire with another remote anchor.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a cylindrical underwater structure floating in the water D1 is drawn to a predetermined depth to become the underwater structure 1 indicated by a solid line, and further shows a moving state in which it is horizontally moved to a predetermined position F1. The underwater moving apparatus will be described with reference to FIG. 4 showing the entire wire tightening. In addition, since the underwater movement apparatus has attached the structure which has the same structure and function which mainly made the wire as a 1-unit movement apparatus, changing the position and direction, one movement apparatus RC shown in FIGS. 1-4 Will be described as a representative example.
[0008]
Wire tightening portions 2F and 2R are provided before and after the underwater structure 1, and, as shown in FIG. 2, wire tightening portions are provided at symmetrical positions of the wire tightening portions 2F and 2R, respectively. As shown in FIG. 4, the wire tightening portion 2R is formed with an inner tightening portion 2a whose bottom surface is inclined inward and a pair of outer tightening portions 2b each inclined forward and backward.
[0009]
Four wire tightening devices 3 are fixed to the inner tightening portion 2a, and the four wires 4 are tightened to the wire tightening device 3. As shown in FIGS. 5 to 7, the wire 4 is attached or detached by a tightening portion 5 </ b> A composed of a tapered hole 5 a formed at the end of the wire joint 5 and a hollow conical three-part wedge 5 b. The four underwater jacks 6 attached to the wire joint 5 are connected to each of the four underwater jacks 6. Here, the wire 4 connected to the underwater jack 6 is also gripped loosely by a tightening portion 6A composed of a case 6a having a conical hole and a hollow conical three-part wedge 6b. Then, the reciprocating axial movement of the underwater jack 6 causes the tightening portion 5A and the tightening portion 6A to work together tightly and loosely to send out or pull the wire 4 toward the underwater structure 1. Has been. The power for operating the underwater jack 6 is supplied from a work boat (not shown) on the water surface W by a pipe (not shown). 6 shows the view in the X direction of FIG. 5, and FIG.
[0010]
An anchor wire tightening device 9 is fixed to a water bottom anchor fixing body 8 previously installed on the water bottom B, and four anchor wires 10 tightened to the anchor wire tightening device 9 are tightened by a stopper 11 of the wire joint 5. ing.
[0011]
FIGS. 8-12 has shown the component structure of the anchor wire fastening apparatus 9 with which the four anchor wires 10 are simply fastened to the water bottom anchor fixing body 8 which is a water bottom anchor. 8 to 10 show a cylindrical wire binding device 9A for binding the ends of the anchor wire 10 together. 9 is a view taken in the direction of the arrow X, and FIG. 10 is a view taken in the direction of the arrow Y. Reference numerals 9B and 9C denote wire covers. In particular, the wire cover 9B is arranged so that the protruding dimensions of the anchor wire 10 are uniform. 11 and 12 show a joint body 9a for fitting the wire binding device 9A and a drop-off preventing metal fitting 9b for preventing the fitting from falling off. The joint body 9a is provided with a fitting hole 9d for loosely fitting the wire binding device 9A and a shoulder hole 9c having a reduced diameter at the end of the fitting hole 9d. The fitting hole 9d and the shoulder hole 9c are formed with a fitting window 9e through which the side surface is opened to the outside and the wire binding device 9A can be fitted from the side surface. Further, the tight binding device 9A is rotatable in the fitting hole 9d. The shoulder window 9c has a small diameter so as to stop the wire binding device 9A from coming off. The drop-off prevention metal fitting 9b is formed so as to be covered and screwed after being fitted so that the fitted wire binding device 9A does not fall off to the side. In the anchor wire tightening device 9 described above, only the joint body 9 a is fixed to the water bottom anchor fixing body 8, and other parts are attached when the anchor wire 10 is tightened.
[0012]
The operation of the above configuration apparatus will be described with reference to FIGS. 1 to 4, 13, and 14 by a method of moving the structure 1 at the underwater position D1 to the specific position F1 in water. Three sets of moving devices are attached to each of the four wire tightening portions provided on the front, rear, left and right of the structure 1. The case where the fastening device RC is attached to the wire fastening portion 2R on the left side of the rear part in FIG. 1 will be described as an example. Four wire tightening devices 3 are fixed to the inner tightening portion 2a of the wire tightening portion 2R, and the wires 4 are tightened to each of the wire tightening devices 3 (see FIG. 4). The length of the wire 4 is determined in consideration of the water depth and the position of the water-bottom anchor fixing body. The wire 4 passes through the wire joint 5 and the underwater jack 4 and is suspended in the underwater. At this time, the wire joint 5 is detachably gripped by the tightening portion 5A and the underwater jack 6 is detachably gripped by the tightening portion 6A.
[0013]
On the other hand, the bottom anchor fixing body 8 is installed on the bottom B serving as a position and path for installing the structure 1. Then, a tight binding device 9A in which the anchor wire 10 is tightly bundled is fitted to the joint body 9a attached to the water bottom anchor fixing body 8, and is covered with the drop-off preventing metal fitting 9b. Next, the other end of the anchor wire 10 fastened to the water bottom anchor fixing body 8 is fixed to the wire joint 5 with the stopper 11. The anchor wire 10 may be first fixed to the wire joint 5 with the stopper 11 and then tightened to the wire tightening device 9 later.
[0014]
By the above, the structure 1 and the bottom anchor fixing body are wire-connected. This operation is performed at three positions for one wire tightening portion, and in FIG. 3, the wire tightening portion 2R is performed for the inner moving device RC, the outer front moving device RA, and the outer rear moving device RB. . In FIG. 1, the moving devices RA, RB, RC are fastened by water bottom anchoring bodies 28, 18, 8. The same operation is performed for the remaining three wire tightening portions.
[0015]
Next, a method for moving the structure 1 in water will be described. As shown in FIGS. 1 and 13, in order to move the structure 1 at the underwater position D1 in the vertical direction to a depth equivalent to that of the underwater position 1, all the wires are pulled and shortened to the bottom of the water with an underwater jack. In the case of the moving device RC, the wire 4 is drawn and shortened by the underwater jack 6. Next, in the front horizontal movement from position 1 to F1, the front wire is shortened and the rear wire is extended and extended. In FIG. 1, for the movement of the wire tightening portions 2R → D2R, 2F → D2F, the wire 4 related to the bottom fixed anchors 28, 8 and 28f, 8f is shortened, and the wire 4 related to 18 and 8 is extended. In order to make the structure 1 have a length of 25 m and a horizontal advance of 2 m, the distance between the outer low water anchor fixing body, for example, 28 and the outer rear water bottom anchor fixing body 18 is preferably about 3 m. 13 and 14 show a state in which the new structure 1 is joined to the existing underwater structure K1, FIG. 13 is a side view, and FIG. 14 is a top view. As described with reference to FIG. 1, the new structure 1 is joined after being matched with the height level of the existing structure K1. The horizontal movement distance for joining is 2 m.
[0016]
Next, as shown in FIG. 2, the horizontal movement in the left-right direction moves to the left if the wire tightening portion 2R and the bottom anchor fixing bodies 18 and 28 are shortened and the bottom anchor fixing body 8 is extended. When the outer diameter of the structure is 4 m, the distance between the bottom anchor fixing bodies 8 to 18 and 28 is preferably about 4 m. In addition, when the moving distance is longer, it is performed while holding the water-bottom anchor fixed body. In actual work, it is possible to move in combination with the above-mentioned vertical horizontal back-and-forth movement and left-right movement.
[0017]
In this way, after connecting the underwater tunnels, the underwater jack can be removed and the wire joints can be fixed to construct the underwater tunnel.
[0018]
【The invention's effect】
As described above, according to the present invention, in addition to the vertical movement of the structure underwater movement, in particular, it is moved so as to crawl the bottom of the water. It is possible to move underwater and install an underwater structure without causing any problems in the sea area.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of an underwater moving method and apparatus for an underwater structure of the present invention.
FIG. 2 is a rear view of FIG.
FIG. 3 is a simplified perspective view showing the rope connection of FIGS. 1 and 2;
FIG. 4 is an assembly diagram showing the underwater moving device.
FIG. 5 is an assembly diagram of the wire joint device and the underwater jack of FIG. 1;
FIG. 6 is a front view of the same.
FIG. 7 is a rear view of the same.
FIG. 8 is a side view of an end portion of an anchor wire.
FIG. 9 is a front view of the same.
FIG. 10 is a rear view of the above.
FIG. 11 is a side view of an anchor wire joint part.
FIG. 12 is a front view of the above.
FIG. 13 is a side view showing a relationship with an existing structure.
FIG. 14 is a top view of the same.
[Explanation of symbols]
B ... Water bottom W ... Water surface 1 ... Underwater structure 2 ... Wire tightening portion 2a ... Inner tightening portion 2b ... Outer tightening portion 3 ... Wire tightening device 4 ... Wire 5 ... · Wire joint 6 · · · Underwater jacks 8 and 18 · · Underwater anchor fixing body 9 · · · Anchor wire fastening device 9A · · Wire fastening device 9B · · Cover 9C · · Cover 9a · · Joint body 9b · · Drop Prevention metal fitting 9c ·· Shoulder hole 9d · · Fitting hole 9e · · Fitting window 10 · · Anchor wire 11 · · Stopper 13 · · Wire tightening device

Claims (2)

In the underwater movement method of an underwater structure for moving a structure suspended in water to a predetermined position in water, each of the wires is fastened to each of a plurality of wire tightening devices provided in the underwater structure. The other end of the anchor wire fastened to each of the water bottom anchors is attached to a wire joint that detachably grips, an underwater jack is attached to the wire joint, and a plurality of water bottom anchors are installed on the water bottom. A method for moving an underwater structure underwater, wherein a portion is fastened to the wire joint, and the plurality of wires are expanded and contracted by the underwater jack to move the underwater structure vertically and horizontally. In an underwater moving device for an underwater structure for moving a structure suspended in water to a predetermined position in water, each of the wires is fastened to each of a plurality of wire tightening devices provided in the underwater structure. Is attached to a wire joint that removably grips, and an underwater jack is attached to the wire joint to expand and contract the wire. An underwater moving device for an underwater structure, characterized in that an end of each anchor wire is fastened to the wire joint.

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