JP2001182072A - Caisson attitude control method and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a caisson attitude control method and device for easily immersing an immersion caisson in a fixed position of a trench, with little inclination and sway of the buried case even in a place with a strong current. SOLUTION: A caisson 1 is provided with a plurality of anchor winches 5. An anchor wire 6 of each anchor winch is pulled out through a wire guide hole 15 of a wire guide elevating device 10, and the position of each wire guide hole 15 is vertically moved to control the attitude of the caisson 1 against a water current.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the attitude of a plurality of boxes, for example, a box for connecting a submerged box and constructing a road or a railway tunnel. The present invention relates to a method of controlling the attitude of a buried box in which a box is laid.

[0002]

2. Description of the Related Art A strait or river road or a railway tunnel is constructed by connecting a large number of submerged boxes. As shown in FIG. 5, the submerged box 1 was laid down by
Is suspended by the hanging wire 4 of the crane 3 provided at the site, transported to the submerging site, moored by the anchor wire 6 pulled out from the anchor winch 5 provided on the upper surface of the immersion box 1, and the hanging wire 4 of the crane 3 is loosened. It is sunk in a trench 7 dug at the sunk site.

[0003] The submerging operation of the submerged box 1 is easily performed in a place where the water flow is weak. However, as shown in FIG. 6, in the submerging work in a place where the water flow is strong, the submerged box 1 is inclined and shakes due to the water flow and is about to rotate. When the immersion box 1 is tilted and shakes in this way, it becomes difficult to lay the immersion box 1 at the fixed position of the trench 7. Therefore, submersion in a place where the water flow is strong increases the
Rotation was prevented. When the burial load of the buried box 1 is increased in this way, the manufacturing cost and the transportation cost of the buried box 1 are increased, and the construction cost of the tunnel is increased.

It is conceivable that an anchor wire 6 is stretched from the upper and lower ends of the side receiving the water flow to stabilize the buried box 1 like a kite. However, since the buried box 1 is sunk in the trench 7, The anchor wire 6 hits the seabed and the laying operation cannot be performed.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art.
It is an object of the present invention to provide a method and a device for controlling the attitude of a box, in which a buried box can be easily laid down at a fixed position of a trench.

[0006]

According to a method of controlling the attitude of a box according to the present invention, in a box having buoyancy, a plurality of anchor winches are provided on the box, and an anchor wire of each anchor winch is a wire guide moving device. And the wire guide holes are drawn out, and the position of each wire guide hole is moved to control the posture of the box.

Further, according to the box attitude control apparatus of the present invention, in a box having buoyancy, the box is provided with an anchor inch, and a guide frame and a guide roller which moves relatively to the guide frame. A wire guide moving device including a moving member having a hole is provided.

In the method of submerging a submerged box with a hanging wire of a crane provided on a mother ship according to the present invention and submerging the submerged box in a trench while loosening the suspended wire of the crane, a plurality of submerged boxes are installed in the submerged box. An anchor winch is provided, and the anchor wire of each anchor winch is drawn through the wire guide hole of the wire guide elevating device, and the wire guide hole through which the anchor wire drawn out to the upstream side of the water flow is inserted is lowered, and The wire guide hole through which the anchor wire pulled out to the downstream side of the wire is inserted is raised to sunk the sinking box. Therefore, even if the water flow is strong, the buried box is less likely to tilt and swing, and the buried box can be easily laid down at a fixed position of the trench.

A winch mount is attached to both ends of the submerged box in the longitudinal direction, the anchor winch is provided on the upper surface of the winch mount, and the wire guide lifting device is provided at both ends of the winch mount. Is preferred.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a submerged box 1 used in the method of controlling the posture of a box according to the present invention is a vertically long box type, and a hook 8 for hanging is provided on an upper surface of the submerged box 1. Winch mounts 9 are attached to both ends in the longitudinal direction. Both ends of the winch stand 9 are flush with or slightly project from the side surface of the immersion box 1. Then, two anchor winches 5 are placed on each winch stand 9.
Are provided, and a wire guide elevating device 10 is provided at both ends of the winch base 9, and a guide roller 11 is provided between the anchor winch 5 and the wire guide elevating device 10.

As shown in FIG. 2, the wire guide elevating device 10 includes a guide frame 12 attached to an end of a winch base 9, a jack 13 provided on the guide frame 12, and an elevating device attached to the jack 13. Member 1
The lifting member 14 is provided with a circular guide roller hole 15.

The anchor wire 6 of the anchor winch 5 is pulled out through the guide roller 11 and the guide roller hole 15 to anchor the immersion box 1. Then, the jack 13 is driven to move the elevating member 14 up and down, thereby changing the position where the anchor wire 6 is pulled out.

Next, a method of submerging a submerged box by the method of controlling the posture of the box according to the present invention will be described. As shown in FIG. 3, the hanging wire 4 of the crane 3 provided on the mother ship 2 is hooked on the hook 8, and the buried box 1 is carried on the trench 7 formed at the digging site. Then, the anchor wire 6 of the anchor winch 5 is inserted through the guide roller 11 and the guide roller hole 15 of the wire guide elevating device 10 and pulled out, and the sunk box 1 is moored by the anchor wire 6. After the sinking box 1 is stably moored on the trench 7, the suspension wire 4 of the crane 3 is loosened, and the sinking box 1 is slowly lowered onto the trench 7. Then, the winch gantry 9 is removed and connected to an existing submerged box (not shown) to construct a tunnel.

As described in the prior art with reference to FIG. 6, when the water flow at the submersion site is strong, the water flow
Is inclined, swings and tries to rotate, and it is difficult to lower the immersion box 1 to the fixed position of the trench 7.

However, as shown in FIG. 4, the method for controlling the posture of the box according to the present invention does not provide
Is driven by the jack 13 of the wire guide lifting / lowering device 10 to lower the lifting / lowering member 14 to lower the pull-out position of the anchor wire 6 through the guide roller hole 15 so that the wire guide lifting / lowering provided on the downstream side B The jack 13 of the apparatus 10 is driven to raise the elevating member 14, and the position where the anchor wire 6 is pulled out through the guide roller hole 15 is raised.

By lowering the pull-out position of the anchor wire 6 on the upstream side A and raising the pull-out position of the anchor wire 6 on the downstream side in this way, the couple of the buried box 1 due to the water flow is prevented from being balanced and inclined. The immersion box 1 can be lowered to a fixed position on the trench 7.

[0017]

As described above, the method for controlling the attitude of the box according to the present invention is as follows: (a) Even when the water flow is strong, the buried box is less inclined and shakes, and the buried box is easily settled at the fixed position of the trench. be able to. (B) Since the winch mount provided with the anchor winch and the wire guide elevating device can be removed and reused, there is no increase in cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a buried box is laid down by a box attitude control method of the present invention.

FIG. 2 is a perspective view of a wire guide lifting / lowering device provided on a winch mount.

FIG. 3 is a front view of a state in which a buried box is laid down by the box posture control method of the present invention.

FIG. 4 is a front view illustrating the relationship between the buried box and the water flow.

FIG. 5 is a perspective view showing a state where the buried box is being laid by the conventional buried box burying method.

FIG. 6 is a front view illustrating a conventional relationship between a submerged box and a water flow.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sinking box 2 ... Mother ship 3 ... Crane 4 ... Suspension wire 5 ... Anchor winch 6 ... Anchor wire 7 ... Trench 8 ... Hook 9 ... Winch mount DESCRIPTION OF SYMBOLS 10 ... Wire guide raising / lowering apparatus 11 ... Guide roller 12 ... Guide frame 13 ... Jack 14 ... Lifting member 15 ... Guide roller hole

Claims (2)

[Claims] In a buoyant box, a plurality of anchor winches are provided on the box, and anchor wires of each anchor winch are pulled out through wire guide holes of a wire guide moving device. A method for controlling the attitude of a box, wherein the attitude of the box is controlled by moving the position of a guide hole. 2. A wire having buoyancy, wherein the box is provided with an anchor inch, and a wire includes a guide frame and a moving member having a guide roller hole which moves relatively to the guide frame. An attitude control device for a box, comprising a guide moving device.