JPH1025708A - Unit structure for floating construction and construction employing this - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a floating construction with ease being light weight and capable of obtaining high freeboards and, besides, having good stability. SOLUTION: The unit structure 10 is formed by mutually connecting a lower construction 20 being constructed in watertight relation to float over the water level and a hollow upper construction 30. The lower construction 20 has ballast 22 and core material 23 made of a synthetic resin foam body charged within a hollow box-shaped lower part covering body 21 with an upper surface open and covered with a covering plate 25. The upper construction 30 has a hollow box-shaped upper covering body 31 with a lower surface open and an upper surface closed, a frame body 32 arranged on the upper part within the upper part covering body 31, and plate-like stiffening materials 33 each being located along each inner surface in the upper covering body 31. The stiffening materials 33 is formed such that the stiffening material main body made of a synthetic resin foam is covered with an overlay made of glass fiber reinforced synthetic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit structure used for constructing a floating structure such as a floating pier, and a floating structure such as a floating pier constructed by the unit structure. The present invention relates to a unit structure for a floating structure and a floating structure having a high freeboard and excellent resilience.

[0002]

2. Description of the Related Art In a port, river, or the like, a floating pier used for berthing or berthing of a ship is usually constructed of a float in which expanded polystyrene is used as a core material and the core material is covered with concrete. I have. In such a float, since the expanded polystyrene used as the core material is of a closed-cell type, there is no possibility that the float itself will sink even when cracks occur in the concrete. In addition, since the float is heavier than the float composed of only the expanded polystyrene, the draft is 50% or more, and the stability is excellent.

Recently, however, there has been a demand for a floating pier on a high freeboard so that cargoes from ships can be easily unloaded and lifted. In order to obtain a floating pier on a high freeboard using, the expanded polystyrene must be enlarged to increase buoyancy, and as a result,
There is a problem that the size of the float is increased and economic efficiency is impaired.

Japanese Patent Application Laid-Open No. Hei 7-108982 discloses that a frame made of fiber reinforced synthetic resin (FRP) is mounted on a plurality of buoyant bodies made of expanded polystyrene, and a resin flooring is mounted on the frame. An laid floating pier is disclosed. Further, Japanese Utility Model Laid-Open No. 1-109495 discloses a floating pier in which a metal frame is mounted on a floating body, and a floor plate made of fiber-reinforced synthetic resin is arranged in the frame.

[0005]

In any of the floating piers disclosed in these publications, a high freeboard cannot be stably obtained because the buoyant body or the frame is directly mounted on the floating body. Moreover, there is a problem that adjustment of the freeboard is not easy.

Japanese Patent Application Laid-Open No. Hei 5-147582 discloses that a floating body for adjusting buoyancy is provided so as to be movable up and down with respect to a floating body made of expanded polystyrene covered with a concrete tank. A pontoon (floating pier) adapted for adjustment is disclosed. In Japanese Patent Application Laid-Open No. 6-146217, ballast holders are provided at four corners of a floating body made of a synthetic resin, and each ballast holder holds a ballast whose weight can be adjusted. A floating pier that maintains balance and adjusts freeboard is maintained.

However, any of the floating piers disclosed in these publications has a problem that the weight of the floating body itself is large, so that it is not easy to install the floating pier and that a high freeboard cannot be obtained.

The present invention has been made to solve such a problem, and an object of the present invention is to make it possible to easily obtain a stable and lightweight high freeboard and to adjust the freeboard height. It is an object of the present invention to provide a floating unit structure for a floating structure and a floating structure using the same.

[0009]

SUMMARY OF THE INVENTION A unit structure for a floating structure according to the present invention has a lower structural part having a core member made of a synthetic resin foam and formed in a watertight manner so as to float on the water surface. An upper cover body, which is a hollow box-shaped lower surface opened and an upper surface closed and arranged and joined so as to cover the upper surface of the lower structure portion, and a peripheral portion of the upper surface inside the upper cover. And an upper structure having a frame-shaped frame member disposed along the inner surface of the upper cover and a plate-shaped reinforcing member disposed along an inner surface of the upper cover.

The inside of the upper structure is divided into a plurality of spaces by a plurality of partitioning reinforcing members arranged vertically.

The upper structure portion has a through hole for filling ballast material in a space arranged at each end.

The reinforcing material and the partitioning reinforcing material of the upper structure portion are respectively a plate-shaped reinforcing material body made of synthetic resin foam and a synthetic resin overlay covering the reinforcing material body. And is constituted by.

Each of the overlays of the reinforcing material and the partitioning reinforcing material is made of a thermosetting fiber-reinforced synthetic resin.

The upper cover is made of a thermosetting fiber-reinforced synthetic resin.

The frame body is covered with a synthetic resin overlay, and the reinforcing material overlay is integrated with the frame body overlay.

The reinforcing material main body of the reinforcing material has a bulk specific gravity of 0.1.
It is a synthetic resin foam of 02 to 0.1 g / cc.

The core material of the lower structure has a bulk specific gravity of 0.001.
0.03 g / cc synthetic resin foam.

The lower structure portion includes a hollow box-shaped lower cover having an open upper surface and a closed bottom surface, and a ballast filled at the bottom of the lower cover. Is filled on the ballast in the lower coating,
The open upper surface of the lower cover is covered with the cover plate in a watertight manner.

The lower cover is made of a thermosetting fiber-reinforced synthetic resin.

The upper cover and the lower cover are integrally fixed.

The portions of the upper cover and the lower cover which are close to each other are formed in the same shape.

The height of the lower structure is 400-600 mm, the height of the upper structure is 400-1000 mm, and the draft of the lower structure is 30-60%.

The floating structure of the present invention is characterized by being constructed by one or a plurality of such unit structures for a floating structure.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a partially broken perspective view of a floating pier showing an example of an embodiment as a floating structure constructed by a unit structure for a floating structure according to the present invention. As shown in FIG. 1, the floating pier is configured by connecting a plurality of rectangular parallelepiped unit structures 10 extending along the quay wall 41 in the longitudinal direction, and a pair of piers provided vertically to the quay wall 41. Each unit structure 10 is moored to the mooring guide rail 42 so as to be able to move up and down.

FIG. 2 is a partially cutaway plan view of a unit structure 10 used for the floating pier, and FIG.
FIG. 4 is a front view of the unit structure 10, and FIG. 5 is a cross-sectional view of the unit structure.

Each unit structure 10 has the same structure, and has a lower structure portion 20 and an upper structure portion 30 respectively.

As shown in FIG. 5, the lower structure portion 20 is formed of a lower cover 21 having a rectangular parallelepiped hollow box shape whose upper surface is opened by a thermosetting glass fiber reinforced synthetic resin.
And a ballast 22 made of reinforced concrete disposed at the bottom of the lower cover 21, and a core 23 made of a synthetic resin foam filled in the lower cover 21 so as to be located on the ballast 22. Have.

The lower cover 21 has a horizontal flat bottom surface 21a, and a pair of outer side surfaces 21c extend upward from each side edge along the longitudinal direction of the bottom surface 21a. At the same time, each end surface 21d (see FIGS. 1 and 3) extends upward from each edge along the width direction at each end of the bottom surface 21a. The height of the lower cover 21 is, for example, 500 mm.

Each outer side surface 21c and each end surface 21d of the lower cover 21 constitute an outer peripheral surface of the lower structure portion 20, and the lower portion near the bottom surface 21a is vertical and the upper portion is outward. It is in a state inclined toward. At the upper edge of each outer side surface 21c and each end surface 21d of the lower cover 21, an upper edge 21f protruding inward horizontally is provided horizontally over the entire circumference.

Each outer side surface 21c of the lower cover 21
A plurality of vertically extending recesses 21g are provided at equal intervals in the inclined portion, and a plurality of vertically extending portions are also provided in the inclined portion of each end face 21d. The recesses 21g are provided at equal intervals. As shown in FIG. 5, each concave portion 21g has a vertical inner inner surface, and an upper edge thereof is covered by a projecting portion 21h that horizontally projects outward.

At the center in the width direction of the lower cover 21, a partition 21b that bisects the lower cover 21 in the width direction is provided vertically along the longitudinal direction.

Each of the bottoms of the lower cover 21 divided by the partition 21b is filled with a ballast 22. The ballast 22 is filled with, for example, a reinforced concrete reinforced by a mesh reinforcing bar over the entire bisected bottom of the lower cover 21 over a thickness of about 50 mm. The lower structure 20 to which the upper structure 30 is joined has a ballast 22 of 30 to 60 with respect to a total height of 500 mm.
% Of the lower covering 2 so that a draft of about
1 at the bottom.

The ballast 22 is not limited to reinforced concrete, but may be concrete, stone, water, or the like that is not reinforced by reinforcing steel.

The core material 23 made of synthetic resin foam is filled on the ballast 22 filled in each lower cover 21. The core material 23 is made of, for example, a synthetic resin such as polystyrene, polypropylene, polyethylene, polyurethane, or acrylic resin, and has a bulk specific gravity of 0.001 to 0.030 g / c.
c, preferably foamed to a high closed cell rate of about 0.018 to 0.025 g / cc. Such a core material 2
3 is in a state of being filled over the entire inside of each lower cover 21 on the ballast 22 in each lower cover 21.

Lower cover 2 in which core material 23 is filled
Reference numeral 1 is covered in a watertight state by a single cover plate 26 made of a thermosetting fiber-reinforced synthetic resin. The cover plate 26 is placed on the upper edge 21f of the lower cover 21. A connection mat 25 made of polyester resin is attached to the partition 21b of the lower cover 21 over the entire length thereof in the longitudinal direction, and the connection mat 25 is provided with a cover plate 26 made of glass fiber reinforced synthetic resin in the width direction. The center is glued.

The upper structure 30 provided on the lower structure 20 includes an upper cover 31 made of glass fiber reinforced synthetic resin and formed in a rectangular parallelepiped hollow box shape whose upper surface is closed and whose lower surface is open. The upper cover 31 has a frame 32 disposed at an upper end thereof and a plurality of reinforcing members 33 made of a synthetic resin foam disposed along an inner surface of the upper cover 31.

The upper cover 31 has a horizontal flat upper surface 31a, a pair of side surfaces 31b extending downward in a longitudinal direction and a pair of end surfaces 31c extending along the width direction. 1 and 3) to form a hollow rectangular parallelepiped with an open lower surface. The upper surface 31a of the upper cover 31 is
Has the same shape and size as the bottom surface 21a.
The upper surface of the upper surface 31a is subjected to non-slip processing provided with a plurality of protrusions.

Each side surface 31b and each end surface 31c of the upper cover 31 extend vertically downward with respect to the upper surface 31a,
At its lower part, it is inclined outward. A lower edge 31d extending horizontally inward is provided at the lower end of each side surface 31b and each end surface 31c. Each side surface 31c of the upper cover 31 is connected to each lower cover 2
Each of the outer side surfaces 21c has a shape similar to that of the outer side surface 21c.

Each side surface 31b and each end surface 31c of the upper cover 31 have a plurality of recesses 31 extending in the vertical direction.
e are provided at equal intervals in the horizontal direction. Each of the recesses 31e is in a state of being concavely recessed continuously from each of the side surfaces 31b and 31c so that the inner back surface is vertical. The upper end edge of each recess 31e is covered with a projecting portion 31f that projects horizontally outward.

The upper cover 31 is integrally formed of a synthetic resin in which a thermosetting resin such as unsaturated polyester or polyepoxy is reinforced with glass fibers. The upper cover 31 is not limited to such a thermosetting glass fiber reinforced synthetic resin, but may be a thermoplastic resin such as polypropylene or nylon reinforced with glass fibers, or a thermosetting and thermoplastic resin. A resin reinforced with carbon fiber, or a thermosetting or thermoplastic synthetic resin not reinforced with glass fiber or carbon fiber may be used.

An upper surface 31 is provided in the upper end portion of the upper cover 31.
The frame body 32 is provided so as to be in contact with the inner surface in FIG. As shown in FIG. 2, the frame body 32 includes a pair of long frame members 32 a extending along the longitudinal direction and a pair of short frame members 32 b extending along the width direction. It is configured in a rectangular frame shape along. In addition, a pair of reinforcing frame members 32c, which are parallel to each short frame member 32b at an appropriate interval, are provided between the long frame members 32a, and the frame body 32 has a central portion in the longitudinal direction. One reinforcing frame member 32c parallel to each reinforcing frame member 32c is provided between the long frame members 32a.

Each long frame member 32 constituting the frame body 32
a, each short frame member 32b, and each reinforcing frame member 32c are respectively
It is constituted by a square pipe made of steel having a square cross section. In addition, each frame material is not limited to such a square pipe, and may be formed of a channel steel having a U-shaped cross section, an angle steel having an L-shaped cross section, or the like.

FIG. 6 is a cross-sectional view of the long frame member 32a of the frame body 32. The frame body 32 is entirely covered with an overlay 32d made of glass fiber reinforced synthetic resin, and the overlay 32d is integrated with an upper cover body 31 made of glass fiber reinforced synthetic resin. The overlay 32b is formed so as to entirely cover the frame body 32 by a hand lay-up method.

As shown in FIGS. 2 and 3, a long plate-like material is provided below each long frame member 32 a of the frame body 32 along the inner surface of each side surface 31 b along the longitudinal direction of the upper cover body 31. Are arranged in a vertical state, and a pair of plate-shaped reinforcing members 33 are also provided below each short frame member 32b of the frame body 32 along each end surface 31c of the upper covering member 31. Each is arranged vertically.

The partitioning reinforcing members 34 are arranged vertically below the reinforcing frame members 32c in the frame body 32 along the respective reinforcing frame members 32c. Then, each reinforcing frame member 3 arranged close to each short frame member 32b
Reinforcement 34 for each partition arranged along 2c
One plate-shaped partition reinforcing member 34 is provided between each reinforcing frame member 32c and the partition reinforcing member 34 disposed along the reinforcing frame member 32c disposed at the center in the longitudinal direction. Each of the long frame members 3 of the frame body 32 is in a parallel vertical state and has an upper end portion.
It is arranged in a state of contacting the upper surface 31a of the upper cover 31 through the space between 2a. These vertical reinforcing members 34 divide the space inside the upper covering body 31 into six in the longitudinal direction.

Further, the six spaces inside the upper cover 31 are formed along the longitudinal direction between the reinforcing members 34 for each partition and the reinforcing members 33 arranged along each end face 31c of the upper cover 31. It is bisected in the width direction by the partitioning reinforcing material 34 arranged in a vertical state. Each of the partitioning reinforcing members 34 along the longitudinal direction is in contact with the upper surface 31 a of the upper cover 31.

In the frame body 32, a plurality of plate-like reinforcing members 33 are arranged along the inner surface of the upper surface 31a of the upper cover body 31. Each reinforcing member 33 disposed along the upper surface 31a includes a reinforcing member 33 vertically disposed along the longitudinal direction and the width direction, a long frame member 32a in the frame body 32, and a short frame member. It is located in a space surrounded by the member 32c and each reinforcing frame member 33c.

Each reinforcing member 33 and each partition reinforcing member 34
Is formed in a plate shape by a synthetic resin foam, and each reinforcing material 33 and each partitioning reinforcing material 34 are entirely covered with an overlay 33b made of glass fiber reinforced synthetic resin. The overlay 33b is integrated with the inner surface of the upper cover 31 made of glass fiber reinforced synthetic resin, and is also integrated with the overlay 32d that covers the frame 32. Overlay 33b,
It is formed so as to cover each reinforcing member 33 and each partition reinforcing member 34 by a hand lay-up method.

As shown in FIG. 2, four spaces respectively formed at the respective ends in the upper structure portion 30 are formed by through holes 30 a penetrating through the side surfaces 31 b of the upper cover 31 and the reinforcing members 33. Each space is filled with a ballast material such as concrete for adjusting the ballast of the entire unit structure 10 through each through-hole 30a.

Each reinforcing member 33 and each partition reinforcing member 34
Is made of a foam using one or more of a base resin such as a polyolefin resin, a polystyrene resin, a polyurethane resin, a polyacrylic resin, a polyvinyl chloride resin, and a polyphenylene resin. Examples of polyolefin resins include polyethylene resins such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-butene-1 copolymer, homopolypropylene, and propylene-ethylene copolymer. Coalesce, propylene-ethylene-butene-
Propylene resins such as 1 copolymer. These polyethylene resin and propylene resin may have a crosslinked structure.

As the polystyrene resin, polystyrene, styrene-α-methylstyrene copolymer, styrene-
Styrene resins such as a maleic anhydride copolymer and a styrene-acleric acid copolymer are exemplified. These styrene resins may have a crosslinked structure.

When a kind of base resin is used, a polyolefin resin is preferred.

When a plurality of types of base resins are used, an aromatic vinyl monomer alone or a mixed monomer of the aromatic vinyl monomer and a copolymerizable monomer can be absorbed into the polyolefin resin. And a polyolefin-styrene-based composite polymer obtained by polymerization. This composite polymer may also have a crosslinked structure. The polyolefin content in this case is 30
% Or more, more preferably 35% or more. If the content of the polyolefin is 30% or less, the reinforcing material 33 and the partitioning reinforcing material 34 may be eroded by the styrene-based monomer used for coating the overlay 33b made of glass fiber reinforced synthetic resin, which is not preferable.

As the reinforcing member 33 to be covered with the overlay 33b made of glass fiber reinforced synthetic resin and the reinforcing member 34 for the partition, the overlay 33 made of glass fiber reinforced synthetic resin is used.
Considering the adhesiveness to b, a polyolefin-styrene-based composite polymer resin is particularly preferred.

The bulk density of the synthetic resin foam constituting the reinforcing member 33 and the partitioning reinforcing member 34 is preferably 0.02 to 0.10 g / cc. When the bulk density of the synthetic resin foam is 0.10 g / cc or more, the economic efficiency is impaired and the weight cannot be reduced.
When the bulk density of the synthetic resin foam becomes 0.02 g / cc or less,
When coated with an overlay 33b made of glass fiber reinforced synthetic resin, the overlay 33b needs to be thickened in order to obtain a predetermined strength, which may make it impossible to reduce the weight. More preferably, the bulk density of the synthetic resin foam is 0.033 to 0.08 g / cc.

As shown in FIGS. 1 and 2, the upper cover 31 of the upper structure 30 has a side surface 3 on the far side of the quay wall 41.
A fender 35 is attached to 1b. This fender 3
As shown in FIG. 6, 5 is horizontally arranged at the upper end of the side surface 31 b on the far side of the quay 41 in the upper cover 31. The fender 35 is made of, for example, a foamed neoprene rubber and has a hollow semi-cylindrical cross-section. Attached to.

As shown in FIGS. 1 and 2, a plurality of mooring rings 36a are provided on the upper surface of the upper structure portion 30. Each mooring ring 36a is provided on the upper surface 31 of the upper cover 31.
Each of them is provided at an appropriate interval on a side edge located on the far side of the quay 41 in FIG. Each mooring ring 3
6a is an upper surface 31 of the upper cover 31 as shown in FIG.
a is inserted and attached to an eye bolt 36b penetrating the long frame member 32a of the frame body 32, and the eye bolt 36b is stopped by a bolt 36c abutting on the lower surface of the frame body 32.

Further, as shown in FIGS. 4 and 5, on the side surface 31b of the upper structure portion 30 facing the quay,
A pair of anchoring rollers 37, which respectively roll and contact along the mooring guide rails 42 provided on the quay 41, are provided rotatably.

The upper structure 30 having such a configuration is superimposed on the lower structure 20, and each of the recesses 3 of the upper cover 31 is formed.
1e and the respective recesses 21g of the lower cover 21 are brought into a state where they abut each other. At this time, the lower end surfaces of the reinforcing member 33 and the partitioning reinforcing member 34 are connected to the cover plate 26 via a connection mat 34a made of polyester resin. Then, the overhang 31f of each recess 31e in the upper cover 31 and the overhang 21h of each recess 21g in the lower cover 21 are bolted with the covering plate 26 interposed therebetween. Thereby, the upper structure part 30 is integrally joined with the lower structure part 20.

The upper structure 30 and the lower structure 2
The bolts that are joined to the bolts 0 may be made of plastic, or may be combined with a polyester resin adhesive during assembly.

Also, without using bolts, for example, a polyester resin adhesive layer is provided over the entire outer periphery of the lower outer peripheral surface of the upper cover 31 and the upper outer peripheral surface of the lower cover 21, and the polyester resin adhesive layer is provided. Both may be fixed by the agent layer. In this case, since the upper cover 31 and the lower cover 21 do not need the concave portions 31e and 21g, the upper cover 3
1, each side surface 31b and each end surface 31c, the lower cover 21
Each side surface 21b and each end surface 21c can be made vertical. Further, a mat made of a polyester resin may be provided between the upper cover 31 and the lower cover 21, and the mat and the polyester resin adhesive layer may be integrated. In addition, it is preferable that the polyester adhesive layer is not in a watertight state, and it is preferable to provide a through hole or the like.

Further, a polyester resin adhesive layer is provided over the entire periphery between the lower edge 31d of the upper cover 31 and the upper edge 21f of the lower cover 21, and the polyester resin adhesive layer is used to connect the two. It may be fixed. In this case, the adhesive strength is increased by extending a part of the polyester resin adhesive layer outward between the lower edge 31d of the upper cover 31 and the upper edge 21f of the lower cover 21. .

The unit structure 10 thus constructed
Constructs a floating pier by connecting a plurality of them in the longitudinal direction, as shown in FIG. FIG. 8 is a sectional view of the upper part of a pair of unit structures 10 connected in the longitudinal direction. A buffer 37 is provided on each end face 31c of the upper covering body 31 of each unit structure 10, and when the unit structures 10 are connected to each other, the buffers 37 of each unit structure 10 are mutually connected. Is to be abutted.
Each buffer 37 is horizontally disposed at the upper end of each end surface 31c of the upper cover 31, and is attached to the short frame member 32b of the frame 32 in each upper structure 30 by a plurality of bolts 37a.

In this case, each buffer 37 is attached to the unit structure 10.
In place of the configuration in which is disposed, as shown in FIG. 9, a transfer plate 37 c may be attached to one of the unit structures 10. The transfer plate 37c is connected to each of the unit structures 10 to be connected.
It covers the upper part between them.

As shown in FIG. 1, a pair of connecting members 38 are provided on each end face 31c of the upper covering body 31 of each unit structure 10 on each side at appropriate intervals in the horizontal direction. It is arranged horizontally. Each connecting tool 38
When connecting the unit structure 10 to the other unit structure 10 along the longitudinal direction, each connecting tool 38 of the other unit structure 10
Is to be connected. Like the fender 35, each connecting member 38 is formed in a hollow semi-cylindrical cross-section by, for example, foamed neoprene rubber. They are separated by minutes. Each mounting position is set in each unit structure 10 so that the connecting members 38 forming a pair of the unit structures 10 that are opposed to each other are arranged alternately in the horizontal direction. It is shifted horizontally.

FIG. 10 is a vertical cross-sectional view of a pair of unit structures 10 connected in the longitudinal direction. Each connecting member 38 is attached to an end surface 31a of the upper covering body 31 of each unit structure 10 by a bolt 38a. One connecting rod 39 is inserted into four connecting tools that are alternately arranged in the horizontal direction and are linear.

It is to be noted that each connecting member 38 is not limited to the method of fixing with the bolt 38a, but may be fixed with a stainless steel belt.

In the unit structure 10 in which the upper structure portion 30 and the lower structure portion 20 are integrated, the lower structure portion 20 is watertight, and the draft line is at the height of the lower structure portion 20. Of the upper structure 30
Is always on the surface of the water at all times, so that a high freeboard can be obtained and excellent stability can be obtained. Upper structure 3
Since the 0 and the lower structure 20 are not in a watertight state, water that has entered the internal space of the upper structure 30 does not accumulate inside and is smoothly drained. Therefore, the draft of the unit structure 10 does not change, and the predetermined high freeboard is always
Secured.

Since the lower structure 20 can float on the water surface, the entire upper structure 30 is located above the water surface, and the unit structure 10 itself becomes a high freeboard. The lower structure 20 is excellent in stability because the lower structure 20 is formed by integrating a pair of lower covering bodies 20 each filled with the ballast 22 and the core material 23. Moreover, the lower structure portion 20 itself has excellent restoring properties due to the ballast 22 provided on the bottom portion. The lower structural part 20 includes the core 2
Since 3 is made of a synthetic resin foam, it is lightweight and easy to install.

The height of the upper structure 30 is changed according to the use of the floating pier formed by the unit structures 10 and the like. In this case, only by changing the vertical length of the vertical portion of the upper cover 31, the upper structure 3
The height of 0 can be changed. Therefore, it is possible to easily obtain a freeboard suitable for a use such as a floating pier. Moreover, the upper cover 31 of the upper structure 30 and the lower cover 21 of the lower structure 20 made of glass fiber reinforced synthetic resin.
Uses the same mold for the parts that are brought into contact with each other and has the same shape.
The height of the upper cover 31 can be easily changed because it is sufficient to change the vertical length of the upper cover 31.

Further, since the ballast material can be injected into each pair of spaces provided at each end of the upper structure portion 30 through each through hole 30a, the unit structure 10 installed is provided. Adjustment of the freeboard can also be easily performed.

It is preferable that the height of the upper structure is 400 to 1000 mm. When it is less than 400 mm, it is impossible to obtain a high freeboard, and when it is more than 1000 mm, the freeboard becomes too high.

[0074]

As described above, since the unit structure for a floating structure of the present invention is lightweight, a floating structure having a high freeboard and excellent stability can be easily constructed. In addition, since the freeboard can be easily adjusted, a freeboard suitable for a floating structure can be easily obtained. The floating structure constructed by such a unit structure has a high freeboard and excellent stability, and is easy to construct because of its light weight.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a floating pier showing an example of an embodiment of a floating structure manufactured by a unit structure for a floating structure of the present invention.

FIG. 2 is a partially broken plan view of a unit structure used for the floating pier.

FIG. 3 is a partially cutaway side view of the unit structure.

FIG. 4 is a front view of the unit structure.

FIG. 5 is a cross-sectional view of the unit structure.

FIG. 6 is an enlarged sectional view showing a main part of the unit structure.

FIG. 7 is an enlarged sectional view showing another main part of the unit structure.

FIG. 8 is a cross-sectional view of an upper portion of a connection portion when the unit structure is connected to another unit structure.

FIG. 9 is a cross-sectional view of an upper portion showing another embodiment of a connection portion when the unit structure and another unit structure are connected to each other.

FIG. 10 is a middle sectional view of a connecting portion when the unit structure and another unit structure are connected to each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Unit structure 20 Lower structure part 21 Lower cover 22 Ballast 23 Core material 25 Connection mat 26 Cover plate 30 Upper structure part 31 Upper cover 32 Frame body 32d Overlay 33 Reinforcement 33b Overlay 34 Reinforcing material for partition

Claims (15)

[Claims] 1. A lower structural part having a core material made of synthetic resin foam and having a watertight structure so as to float on the water surface, and a hollow box shape having an open lower surface and a closed upper surface. An upper cover body arranged and joined so as to cover the upper surface of the lower structure portion, a frame-shaped frame body arranged along a peripheral portion of the upper surface inside the upper cover body, and the upper cover body And an upper structure portion having a plate-shaped reinforcing member arranged along the inner surface of the above. 2. The floating structure unit structure according to claim 1, wherein the inside of the upper structure portion is divided into a plurality of spaces by a plurality of vertically arranged reinforcing members. 3. The unit structure for a floating structure according to claim 2, wherein the upper structural portion has a through hole for filling a ballast material in a space arranged at each end. 4. The reinforcing member and the partitioning reinforcing member of the upper structure portion are respectively a plate-shaped reinforcing member main body made of synthetic resin foam and a synthetic resin covering the reinforcing member main body. The unit structure for a floating structure according to claim 1, wherein the unit structure comprises: 5. The unit structure for a floating structure according to claim 4, wherein each overlay of the reinforcing material and the partitioning reinforcing material is made of a thermosetting fiber-reinforced synthetic resin. 6. The unit structure for a floating structure according to claim 1, wherein the upper cover is made of a thermosetting fiber-reinforced synthetic resin. 7. The unit structure for a floating structure according to claim 4, wherein the frame body is covered with a synthetic resin overlay, and the reinforcing material overlay is integrated with the frame body overlay. . 8. The reinforcing material body of the reinforcing material has a bulk specific gravity.
The unit structure for a floating structure according to claim 4, which is a synthetic resin foam of 0.02 to 0.1 g / cc. 9. The core material of the lower structure part has a bulk specific gravity of 0.0.
The unit structure for a floating structure according to claim 1, which is a synthetic resin foam of 01 to 0.03 g / cc. 10. The lower structural part includes a hollow box-shaped lower cover having an open top surface and a closed bottom surface, and a ballast filled at the bottom of the lower cover. The unit structure for a floating structure according to claim 1, wherein a material is filled on a ballast in the lower cover, and an open upper surface of the lower cover is covered with a cover plate in a watertight manner. 11. The unit structure for a floating structure according to claim 10, wherein the lower cover is made of a thermosetting fiber-reinforced synthetic resin. 12. The unit structure for a floating structure according to claim 10, wherein the upper cover and the lower cover are integrally fixed. 13. The unit structure for a floating structure according to claim 10, wherein portions of the upper cover and the lower cover which are close to each other are formed in the same shape. 14. The height of the lower structure part is 400 to 600 m.
2. The unit structure for a floating structure according to claim 1, wherein the height of the upper structure is 400 to 1000 mm, and the draft of the lower structure is 30 to 60%. 15. A floating structure, which is constructed by one or more unit structures for a floating structure according to claim 1. Description: