JPH09287148A - Launching equipment for floating caisson - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and safely launch without use of a crane boat, by providing a supporting base arranged to form a space for supporting a floating caisson, a lifting device equipped therein, and a receive frame in the space and also providing a skid rail on which the caisson slides and beams. SOLUTION: Right and left support bases 3 as the launching equipment 2 body are erected adjacently to a bulkhead 35 from the upper face of a submarine foundation 25 to a level S above the sea. A receive frame 4 is provided in the space by lifting devices 5 so as to be vertically movable. The shell of floating caisson body fabricated on the ground is transferred on the skid rails 40 to the bulkhead 35. In this time, the receive frame 4 is positioned in the same level with the skid rail 40, in the launching equipment 2 side and the caisson is received on the vertical beams of the receive frame 4. Then, the receive frame 4 is lowered to the sea surface level S to set it afloat. And the shell of floating caisson is drawn out of the launching equipment 2 by a tagboat. Subsequently it is moored at a preparatory pier and concrete is placed therein to finish a floating caisson 1. In this way, a crane boat is not required to safely launch a floating caisson 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to equipment for launching a floating body (including a case of a floating steel shell) from above the quay.

[0002]

2. Description of the Related Art The construction of a floating box generally used for offshore construction is performed in the following procedure. That is, as shown in FIG. 11, after assembling the steel shell portion 1 ',
As shown in FIG. 2, concrete is poured using a mixer truck M or the like to construct a floating box body 1 having a hybrid structure composed of a steel plate and concrete as shown in FIG. Then, as shown in FIG. 13, the floating box 1 is slid by the skid rails 40, and as shown in FIG.
To the sea surface S by the crane ship 30.

[0004]

By the way, in the launching means for the floating body as described above, in order to launch the heavy floating body mounted on the quay to the sea surface after it is lifted by the crane ship. However, it requires a large amount of preparatory work, requires a large work space, requires a long working time, has a problem in safety, and has a problem that the rental fee of the crane ship is expensive. The present invention overcomes such problems and provides equipment capable of efficiently and safely launching a floating body (including the case of a steel shell of a floating body) at low cost. That is the issue.

[0005]

In order to solve the above-mentioned problems, the floating box launching equipment of the present invention has a floating box support equipment which is erected from above the seabed foundation to above the sea surface adjacent to the quay and supports the floating box between them. Right and left support bases arranged so as to form a space for use, lift devices respectively mounted on these support bases, and the lift devices provided so as to be lifted and lowered in the space for supporting the floating body. It is characterized in that it is provided with a receiving frame and provided with a sliding means for slidingly transferring the floating box from above the quay wall to above the receiving frame.

In the above-mentioned floating body launching apparatus of the present invention, the floating body on the quay is moved by the sliding means onto the receiving frame in the floating body supporting space between the left and right support bases adjacent to the quay. Therefore, a crane ship is not required, and the floating body moved to the receiving frame can be safely launched by descending to the sea surface together with the receiving frame by the lifting device.

The support base can be constructed by combining a large number of support base units erected on the seabed foundation, which facilitates the construction of the support base as compared with the case of an integral structure.

Further, when the elevating device is installed between the support base units, the support base units are firmly combined with each other, and the strength of the support base is increased.

Further, when the sliding means is composed of a skid rail laid on the quay and an upper beam member provided on the receiving frame, the floating pair is mounted on the skid rail on the quay. From the installed state, it can be safely transferred onto the upper beam member as a constituent member of the receiving frame by a winch pulling means or a hydraulic pressing means.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A floating body launching equipment as an embodiment of the present invention will be described below with reference to the drawings.
1 is a perspective view thereof, FIG. 2 is an enlarged perspective view of an essential part of the portion A of FIG. 1, FIG. 3 is a plan view of a receiving frame in the equipment of FIG. 1, and FIG. 4 is a floating frame mounted in the receiving frame of the equipment of FIG. It is a principal part front view which shows the launch state of a box, and FIGS. 5-10 is explanatory drawing which shows the progress from the launch of the floating box by the installation of FIG. Is.

As shown in FIGS. 1 and 2, the left and right support bases 3, 3 as the main body in the launch facility 2 for the floating body 1 are adjacent to the quay 35 from the seabed foundation 25 to the sea surface S. In the space for supporting the floating body formed between the support bases 3, 3 in the receiving frame 4
Is provided so that it can be moved up and down by the lifting device 5.

Each support base 3 is composed of a combination of a large number of reinforced concrete support base units 3a erected on the seabed foundation 25, and the lifting device 5 includes a support plate 6 between the support base units 3a. It is erected through.

By providing the elevating device 5 as described above, the upper end portions of the adjacent supporting base units 3a, 3a are firmly coupled to each other, and the elevating rod 5a of the elevating device 5 is provided in the gap portion 3b between both units. The horizontal beam 4a of the receiving frame 4 is connected to the lower end of the rod 5a.

The receiving frame 4 is, as shown in FIGS. 2 and 3,
The horizontal beam 4a is composed of a plurality of horizontal beams 4a and a plurality of vertical beams 4b assembled to the horizontal beam 4a from above and directed toward the quay 35. The vertical beam 4b as an upper beam member is slidably attached to the receiving frame 4 by the floating body 1 It has the function of a skid rail when moving (or the floating shell 1 ').

As shown in FIG. 1, a skid rail 40 for sliding the floating body 1 toward the receiving frame 4 is also laid on the upper surface of the quay 35, and thus the receiving frame 4 is formed.
The vertical beam 4b as the upper beam member and the skid rail 40 on the quay constitute a sliding means for the floating body 1.

In the floating body launching apparatus of the present embodiment configured as described above, the floating body 1 on the quay 35 is floated between the left and right support bases 3 adjacent to the quay 35. Since the skid rail 40 and the vertical beam 4b as the sliding means are transferred onto the receiving frame 4 in the body supporting space, a crane ship is not required, and the floating box 1 transferred onto the receiving frame 4 is shown in FIG. As shown in the drawing, the lifting device 5 allows the user to descend to the surface of the sea together with the receiving frame 4 and safely launch it. The floating body 1 is driven by a towing means such as a winch or a hydraulic pressing means.

Since the support base 3 is constructed by combining a large number of support base units 3a standing on the seabed foundation 25, the support base 3 can be easily constructed as compared with the case of the integral structure. Further, since the lifting device 5 is installed between the support base units 3a, the support base units 3a are firmly combined with each other, and the strength of the support base 3 is also increased.

5 to 10 show that the floating shell launching equipment of this embodiment is used to launch the floating shell steel shell portion 1'on the quay 35, and the steel shell portion 1'is equipped with the rigging quay wall 36. After completing concrete placement and completing the floating box 1 as a submerged box,
The process up to installation on the seabed 38 is shown in sequence.

That is, as shown in FIG. 5, first, the floating steel shell 1'made on land is conveyed to the quay 35 on the skid rail 40 by a driving means (not shown).
At this time, on the launch facility 2 side, the lifting device 5 performs the ascending operation, so that the receiving frame 4 is located above the sea surface S and at the same level as the skid rail 40 on the quay. The floating shell steel shell portion 1 ′ sent from the quay 35 side is received on the vertical beam 4 b of the receiving frame 4 (FIG. 5).
reference).

Then, when the receiving frame 4 is lowered below the sea surface by the descending operation of the elevating device 5, the floating shell steel shell 1'is in a state of landing and floating on the sea surface S. Therefore, as shown in FIG. 6, the tugboat 45 pulls out the floating steel shell 1 ′ from the launch facility 2.

Then, the floating steel shell 1'is towed by the tugboat 45, and as shown in FIG. 7, it is brought into contact with the outfitting quay 36, and then concrete placing is performed on the bottom of the steel shell 1 '. Then, the floating body 1 is completed.

Further, as shown in FIG. 8, the floating box 1 is towed by a tugboat 45, and as shown in FIG.
The berthing of the floating body 1 is carried out on the side wall of the floating body 1 and other unfinished parts. The floating body 1 thus completed is installed on the on-site seabed 38 as shown in FIG.

[0023]

As described above in detail, according to the floating body launching equipment of the present invention, the following effects can be obtained. (1) Since the floating body on the quay is moved by sliding means to the receiving frame in the space for supporting the floating body between the left and right support bases adjacent to the quay, a crane ship is not required and The transferred floating box can be safely launched by descending to the sea surface together with the receiving frame by the lifting device. (2) When the support base is configured by combining a large number of support base units erected on the seabed foundation, the support base can be constructed more easily than in the case of an integral structure. (3) When the elevating device is installed between the support base units, the support base units are firmly combined with each other, and the strength of the support base is also increased. (4) When the sliding means is composed of a skid rail laid on the quay and an upper beam member provided on the receiving frame, the floating body is placed on the skid rail on the quay. From this state, it can be safely transferred onto the beam member as the constituent member of the receiving frame by the pulling means by the winch or the hydraulic pressing means.

[Brief description of drawings]

FIG. 1 is a perspective view showing a floating body launching facility as an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part showing an enlarged part A of FIG.

FIG. 3 is a plan view of a receiving frame in the equipment of FIG.

FIG. 4 is a front view of relevant parts showing a launching state of a floating body mounted on a receiving frame in the equipment of FIG.

[Figure 5]

FIG. 10 is an explanatory diagram sequentially showing the process from launching of the floating body by the equipment of FIG. 1 to installation of the floating body on the local seabed.

FIG. 11

FIG. 14 is an explanatory view sequentially showing the process from assembly of the steel shell portion of the conventional floating body to launching.

[Explanation of symbols]

 1 Floating Body 1'Floating Body Steel Shell 2 Launching Equipment 3 Supporting Stand 3a Supporting Stand Unit 3b Gap 4 Frame 4a Horizontal Beam 4b Vertical Beam (Upper Beam Member) 5 Lifting Device 5a Lifting Rod 6 Supporting Plate 25 Subsea Foundation 30 Crane Ship 35 Quay 36 Outfitting Quay 37 Local Quay 38 Local Seabed 40 Skid Rails 45 Tugboat M Mixer S Sea Level

Claims (4)

[Claims] 1. Right and left support bases that are erected from above the seabed foundation to above the sea surface adjacent to the quay and arranged so as to form a space for supporting a floating body between them, and are mounted on these support bases, respectively. And a receiving frame provided to be driven up and down in the space for supporting the floating body by the lifting device, in order to slide the floating body from the quay to the receiving frame. Is provided with a sliding means of
Floating box launch equipment. 2. The floating box launching facility according to claim 1, wherein the support base is configured by combining a number of support base units erected on the seabed foundation. Floating box launch equipment. 3. The floating body launching facility according to claim 2, wherein the elevating device is installed between the support base units. 4. The floating body launching facility according to claim 1, wherein the sliding means includes a skid rail laid on the quay and an upper portion provided on the receiving frame. A floating body launching facility, comprising a beam member.