JPH02306893A - Floating/sinking supporter - Google Patents

Abstract

PURPOSE:To construct a supporter which is easy to change its surface area or height irrespective of water depth, to maintain and to remove, by using a hollow body which floats or sinks freely and is capable of controlling increase or decrease in its volume through supplying or extracting of inner gas or liquid. CONSTITUTION:A floating/sinking supporter 12 is towed onto a construction site at a water bottom surface after being floated on the water level by air supplied to its float 11. Air in the float 11 of the floating/sinking supporter 12 is extracted through an air supply/discharge pipe 15 at first. Then water is supplied to the float 11 until it reaches a fixed pressure. Subsequently, the sunk floating/sinking supporter is landed on the water bottom by feeding water to its side floats 21. In this state, a concrete structure 22 is constructed to have a height with enough floating ability on the deck of a working stage boat 20. Then water in the side floats 21 is extracted and the working stage boat 20 with the concrete structure 22 is floated on the water level. After it is towed onto the construction site, water is supplied to the side floats 21 again to sink only the working stage boat 20 under the water level and the concrete structure 22 and the working stage boat 20 are separated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a floating platform for landing on the bottom of a work barge, etc., which is used when constructing a concrete structure such as a caisson.

(Prior art) When constructing a concrete structure such as a caisson to be used as a breakwater near a quay, as shown in Fig. The work barge 4 was brought to the bottom, and the concrete structure 1 was being built inside the work barge 4.

In this case, in order to install the work barge 4 at an arbitrary position and depth that matches the scale of the concrete structure 1 to be fabricated, the mound 3 is filled with earth and sand to a predetermined depth on the water bottom 2 near the fabrication yard 5 of the quay. It was being created and built.

(Problems to be Solved by the Invention) However, the means for constructing concrete structures as described above has had various problems as described below.

(1) It takes time and effort to create or remove the mound 3, and as a result, the economic efficiency becomes poor.

That is, since it is necessary to introduce earth and sand until a predetermined depth is reached and to level the bottom surface of the mound 3, devices and equipment for this purpose are required. In addition, it takes a lot of effort and time to operate these devices and equipment to create the mound. These points also apply to demolition, which is uneconomical.

(2) It is not possible to easily increase or decrease the depth or area of the mound 3.

In other words, since the mound is constructed near the quay, in some cases, for reasons of ship operation, it is unavoidable to temporarily remove or reduce the size of the mound, and the excess portion must be removed by dredging or excavating.

In addition, in order to create a new mound or increase its area, it is necessary to fill and level the earth and sand under water, which is a complicated work in any case.

(3) Water pollution always occurs when mounds are created, increased or decreased, or removed.

That is, when soil is added to create or expand a mound, the sea becomes contaminated, and during leveling work, the soil leveled by the leveling device pollutes the vicinity of the seabed. This means that dredging and excavation during removal are intermittent, leading to widespread ocean pollution.

(4) Difficult to maintain and manage.

In other words, the ``slope'' or ``top'' of Mound 3 is constantly eroded by the flow of seawater. Therefore, in order to prevent this, in addition to taking preventive measures such as installing erosion prevention blocks on the ``glue part 3a'' and ``shoulder'' shown in Figure 8, maintenance work on the eroded areas must be carried out. necessary, and maintenance is complicated.

(5) Deep water requires a lot of cost, time and effort, which is disadvantageous.

In other words, when the water depth is deep, the amount of earth required to create the mound 3 at a predetermined depth is extremely large, and the base area needs to be wide, so it takes a lot of time and effort to create or remove the mound 3. Not only is this necessary, but it also costs a lot of money.

This invention was made to solve this problem.
The purpose of this is to replace the mound with an I-mound or sand embankment by using a hollow body whose internal volume can be controlled to increase and decrease, and which can float and sink. Easy to construct and change its area and height,
The purpose is to provide a floating platform that is easy to maintain, manage, remove, etc., and another purpose is to provide a fish tank in the upper part of the hollow body and store fish caught alive in the fish tank, so that it can be used for sightseeing. The purpose of the present invention is to provide a floating stand that can be used for various purposes.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a hollow body whose internal volume can be controlled to increase and decrease, and a frame provided around the hollow body that floats and sinks integrally with the hollow body. and a supply/discharge pipe for supplying and discharging gas, liquid, etc. to the hollow body, and a fish tank is integrally arranged above the hollow body and the frame body. It is characterized by being

(Function) With the above configuration, according to the present invention, the hollow body is submerged below the water surface by injecting water, powder, etc. into the hollow body through the supply/discharge pipe. It becomes possible to place a work barge on the top of this sunken hollow body, and it can serve as a mound when constructing a concrete structure such as a so-called caisson.

In this case, it is possible to freely adjust the height and area of the hollow body by adjusting the amount of water or the like injected into the hollow body or by adjusting the amount of connection of the hollow body.

Furthermore, by discharging water etc. from the hollow body and supplying gas such as air instead, the hollow body can float above the water surface due to its buoyancy. The hollow body is controlled to float or sink by supplying and discharging liquid or the like.

Furthermore, by integrally arranging a fish tank on the upper part of the hollow body, the fish tank can be controlled to float and sink together with the hollow body, and fish etc. caught underwater can be housed alive in the fish tank, It can also be used for tourism purposes.

(Example) Hereinafter, preferred examples of the present invention will be described based on the drawings.

The present invention is characterized by a hollow body whose internal volume can be controlled to increase or decrease, a frame provided around the hollow body that floats and sinks integrally with the hollow body, and a gas/gas flow between the hollow body and the hollow body. It is equipped with a supply pipe for supplying and discharging liquid, etc.

That is, an embodiment of the present invention is shown in FIGS. 1 to 4, and the floating stand 10 includes a plurality of floats 11, 11, . . . as shown in FIGS. ... are arranged in a rectangular shape and surround the surrounding frame 12
It is equipped with Each of the above-mentioned flows) 11 and the frame 12 are integrally connected by a fixture 13, and both the front and back sides of these float groups are protected from wire lobes, band-shaped metal plates, etc. to prevent each flow [1] from separating. It is held by a fixing band 14 consisting of:

The flow H1 is made of a highly elastic material such as rubber or plastic whose internal volume can be controlled to increase or decrease, and is connected to the frame 12.
Air supply/discharge, liquid injection/drainage, etc. are performed via the supply/exhaust pipe 15 or the injection/drainage pipe 16 housed inside.

Here, the fixture 13 includes the float 11 and the supply/exhaust pipe 1.
5 and the filling and draining pipe 16,
The buoyancy can be freely adjusted depending on the type of gas or liquid injected into the interior, and the height of the flow eye 1 can also be adjusted by adjusting the amount of injection.

Note that the flow H1 has a structure that can sufficiently withstand internal pressure generated when an external force is applied.

Therefore, when a gas such as air is supplied to the inside of the float 11, the floating stand 10 rises to the surface of the water due to its buoyancy, and when a liquid such as water or powder is injected into the inside of the float 11, the float 10 floats to the surface of the water. It is designed to sink into the water or to the bottom of the water.

As described above, in order to construct a concrete structure such as a caisson near the quay, as described above, for example, air is supplied into the float 10 of the floating pedestal 10 to float it to the water surface, and as shown in FIG. The mound is towed onto a predetermined water bottom near the quay where the mound is to be constructed, or moved using a thick wall crane.

When the destination is reached, as shown in FIG. 3, work is carried out to sink the floating platform IO into a predetermined position.
That is, first, the air inside the floating frame 10 is removed via the supply/exhaust pipe 15, and then the pump equipment 18 disposed on the quay 17 is operated to suck water through the suction/drainage pipe 19, and at the same time, the water supply/drainage pipe 16 is Water is poured into the float 11, and the floating stand 10 is sunk to the bottom of the water.

At this time, after water is supplied to the float 11 until a constant pressure is applied, the valve of the water supply pipe 16 is closed.

As shown in FIG. 4, water is injected into the side float 21 of the work barge 20 on top of the floating platform 10 sunk in this manner, and the work barge 20 is brought to the bottom. In this state, the concrete structure 22 is built on the floor plate of the work barge 20, and when the concrete structure 22 is built to a height where it has sufficient buoyancy, the water in the side flow 21 is drained and the work platform is ship 2
0 is floated on the water surface together with the concrete structure 22, and these are towed to a predetermined position.

When the target position is reached, water is again poured into the side floats 21 to submerge only the work barge 20 under the water surface, thereby separating the concrete Nissei Structures 22 and the work barge 20.

In this way, the concrete structure 22 is floated alone on the water surface, and then water is poured into the concrete structure 22 to sink it to a predetermined position on the bottom of the water.

When moving or removing the floating platform 1O that has been sunk as described above, the water in the float 11 is drained by operating the pump equipment 18, and then a compressor is installed 23 in the supply and exhaust pipe 15.
Connect. Then, air is supplied into the float 11 and the internal pressure of the air inflates the float 11 to increase the buoyancy and float the float 10 to the surface of the water.

In this embodiment, the flow [1, 11, ...] is a single layer and is arranged in parallel. However, the present invention is not limited to this. , three layers, etc., or by arranging the floats 11 so as to cross each other, the height of the so-called mound can be adjusted. In addition, by arranging the floating frames 10 in two rows, three rows, etc. in the vertical and horizontal directions,
You can also change its width at will.

Furthermore, when submerging the floating platform 10, sufficient supporting force can be obtained by injecting, for example, fine sand together with water instead of pouring water into the flow Ml and filling the inside of the float 11 with fine sand. In this case, in order to float the floating platform IO, it is sufficient to discharge the fine sand together with the water while jetting water out of the sand in the flow H1 in the form of a jet using the pump equipment 18.

Next, FIGS. 5(a) and 5(b) show an embodiment of a floating frame 100 equipped with a fish storage tank 24.

That is, this floating frame 100 has a fish storage tank 24 provided on the flow eye 1 and the upper part of the frame body 12 via a floor stand 25.
This fish tank 24 has a side plate 26 made of a transparent plate such as plastic or glass, and a floor #! It consists of i27. Further, the floor stand 25 is connected to the fish tank 24 together with the floor plate 27.
When the fish tank 24 rises from the water surface, it plays the role of evenly transmitting the water load in the tank and the tank's own weight to the flow [1].

On the outer peripheral side of the side plate 26, there are horizontal side frames 28a, 28 for supporting the load from the side plate 26 caused by the water pressure in the tank.
a, . . . and vertical side frames 28b, 28b, . Note that the reference numeral 29 is a walkway for people to walk on, and the reference numeral 30 is a handrail.

As described above, the fish storage tank 24 has a structure that can sufficiently withstand the water pressure caused by the water accumulated in the tank after the floating platform 100 floats to the water surface.

To use such a floating pedestal 100, as shown in FIG. 6, the floating pedestal 100 is floated and towed to a water area such as a fishing ground by a fishing boat 31 or the like. After being towed onto a predetermined water bottom surface, the floating platform 100 is sunk, and the fishing boat 3 is
Next, the area of the net 32 is gradually narrowed to a size that can fit into the fish storage tank 24, and the net 31 towed by the fishing boat 3I is floating stand 1
Move it to the installation position of 00.

Subsequently, as shown in FIG. 7, the floating platform 100 is floated,
A net 32 is placed in a fish tank 24 underwater and lifted above the water surface. Finally, the net 32 inside the fish tank 24 is removed and the fish etc. are moved into the tank.

That is, according to the embodiment of the present invention, the floatable platform 100 is installed by, for example, being towed to a fish port as a simple fish tank that can freely float and sink, and lowering the anchor while floating on the water surface, and tourists are guided to the walkway of the platform. You can also take them on board 29 to see the sights.

(Effects of the Invention) As explained above, the present invention includes a hollow body whose internal volume can be controlled to increase and decrease, a frame provided around the hollow body and floating and sinking integrally with the hollow body, and a frame body that floats and sinks integrally with the hollow body. By being equipped with supply and discharge pipes for supplying and discharging gas, liquid, etc. between
It has the following effects.

(1) The internal volume of the hollow body can be increased or decreased, and its buoyancy and self-weight can be controlled, so when it is used as a mound for constructing a concrete structure such as a caisson, it can be constructed and removed. This is extremely easy and can shorten the construction period.

(2) By adjusting the amount of liquid, etc. injected into the hollow body, its height can be freely adjusted, and by adjusting the amount of the hollow body to be connected, its area can be adjusted. can also be adjusted.

(3) Mounds constructed by filling up with rubble, sand, etc. always caused water pollution when the earth and sand were removed, but with the present invention there is no worry of water pollution, and it is preferable in terms of environmental pollution. .

[4] Conventionally, the mound was constantly eroded by the flow of water, but according to the present invention, this does not occur and maintenance is easy.

(5) Conventionally, mounds were constructed by embanking at shallow water depths, but the deeper the water became, the larger the amount of soil, which required time and effort to build and was difficult to remove and dispose of the remaining soil.
According to the present invention, since the height of the hollow body can be freely adjusted to ms, the depth can be easily adjusted.

Furthermore, the present invention has a fish tank integrally arranged on the upper part of the hollow body and the frame body, so that the fish tank can sink into the water together with the hollow body, and the fish etc. caught in the water can be directly placed in the fish tank. It is possible to house them while still living in them and use them for so-called tourist purposes.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1(a) is a cross-sectional front view of a floating frame according to the present invention.
Figure (b) is its plan view, Figure 2 is a diagram showing the floatation platform in a floating state, Figure 3 is a diagram showing the state in which it is sunk to the bottom of the water,
Figure 4 is a diagram showing the state in which a concrete structure is constructed by placing a work barge on the bottom of a floating frame, and Figure 5 (a) shows a floating and sinking structure with a fish tank suspended above the hollow body and frame. A cross-sectional view of the pedestal, Figure 5) is its plan view, Figure 6 is a diagram showing the state in which the floating pedestal in Figure 5 is submerged in water and the net is moved toward the fish tank. 8 is a diagram showing a state in which a floating platform is floated to transfer fish caught with a net into a fish tank, and FIG. This is a diagram showing the state in which a concrete structure is constructed after it has landed on the bottom. 1.100 ...Floating stand 11 ... Float 12 ... Frame 13 ... Fixture 14 ... Fixing band 15 ... Supply and exhaust pipe 16 ... ... Filling and draining pipe 24 ... Fish tank 25 ... Floor stand 26 ... Side) Reverse 27 ... Floor board Fig. 1 (b) Fig. 2 Fig. 3 Figure 4 Figure 5 (b) Pit 7 Figure 8

Claims (2)

[Claims] (1) A hollow body whose internal volume can be controlled to increase or decrease; a frame provided around the hollow body and floating and sinking integrally with the hollow body;
A floating and sinking frame comprising a supply and discharge pipe for supplying and discharging gas, liquid, etc. to the hollow body. (2) A floating and sinking pedestal according to claim 1, characterized in that a fish tank is integrally arranged above the hollow body and the frame body.