JPH0676409U - Concrete floating structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a concrete floating structure that is lightweight, yet has excellent strength and durability, and that can be easily installed locally. [Structure] A floating body single unit A is configured by mounting a foam body 2 inside a concrete cylindrical body 1 formed by centrifugal molding, and these floating body single units A are appropriately arranged in the length direction, the width direction, and the height direction of the floating body unit A. The floating structures B are formed by connecting the numbers.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a concrete floating structure, more specifically, a concrete floating structure floating on a sea, lake, swamp, river, dam, etc., or used as a mooring point for yachts in a facility attached to a yacht harbor and marina. Regarding

[0002]

[Prior art]

 Floating structures used for conventional floating piers include wood and FRP, but they have the problem of weak strength and lack of durability. Therefore, recently, a floating structure made of concrete has been developed and is actually being used.

[0003]

[Problems to be solved by the device]

 By the way, the existing concrete floating structure is formed by forming a concrete hollow box body by vibration molding or molding and mounting a block made of foam inside the hollow box body. Since the concrete box covering the foam is vibration-molded and mold-molded, it lacks water-tightness, which makes it difficult to say that it has sufficient strength, and there is concern about its durability. If the durability is to be increased, the wall thickness of the concrete box body must be increased, and in such a case, the overall weight becomes heavy, and as a result, the freeboard becomes small. Also, if the freeboard is to be increased, the size in the height direction must be increased, and the floating structure becomes very large.

The above-mentioned concrete floating structure is molded in a factory, and the size of each one is very large as described above, and therefore the transportation from the factory to the site and the There is a problem in handling because it takes time to install.

The present invention has been made in view of the problems of the above-described conventional techniques, and its purpose is to achieve lightness, strength, and durability, and to facilitate transportation from a factory to a local site. The purpose is to provide a concrete floating structure that can be easily installed in the area.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the technical means taken by the present invention is to install a foam body inside a concrete cylindrical body formed by centrifugal molding to form a floating body unit, and the floating body unit is the length of the floating body unit. It is characterized by connecting an appropriate number in the direction, width direction, and height direction. The size of the floating body alone is determined in consideration of connection and assembly and handling.

The shape of the concrete tubular body that constitutes the floating body may be a rectangular tube such as a rectangular parallelepiped or a cube, or a circular tube, and the opening of the tubular body may be covered with a cover plate separately molded. Close and hold the foam inside. In addition, it is of course optional that the lid attached to the opening of the tubular body is provided with packing in consideration of watertightness.

[0008]

[Action]

 According to the above means, a floating structure is configured by connecting a suitable number of floating bodies in the length direction, the width direction, and the height direction to form a floating structure. A floating structure can be formed. Moreover, since the concrete cylinder is molded by centrifugal molding, it becomes a dense and bubble-free product, resulting in high watertightness, rich pressure resistance strength even with a thin cylinder, and improved durability. It

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a single floating body A that constitutes a floating structure, in which 1 is a rectangular parallelepiped concrete cylinder molded by centrifugal molding. A block made of foamed material 2 such as styrene foam is installed inside the cover, and lids 3 are attached to both side openings of the concrete-made cylindrical body 1 and the length of the cylindrical body 1 is increased. Nuts 5 are screwed and fastened to both sides of the PC steel rods 4 inserted in the four corners along the entire length in the direction, and the lids 3 on both sides are fixed. The lid 3 that closes the openings on both sides of the concrete tubular body 1 may be made of concrete as with the tubular body, but may be made of another material such as FRP or metal.

The floating structure single body A configured as described above is connected in an appropriate number in the length direction, the width direction, and the height direction to form the floating structure B. A connecting metal fitting 6 is abutted over it, and the connecting metal fitting 6 is fixed to the floating body single body A by a bolt 7 and connected. The number of connected floating bodies A and the connecting direction are appropriately determined according to the floating structure B to be obtained. That is, in the case of a floating structure B on which a considerable weight is to be loaded, it is necessary to stack and connect the floating body A in two steps and three steps not only in the horizontal direction in the length and width directions but also in the height direction. When a large area is secured, it is connected horizontally and constructed.

Further, when the floating body single bodies A are connected in the length direction, the floating body single bodies A to which the lid plates 3 are attached may be used, but the lid bodies 3 are located on both sides in the length direction. It may be attached only to the outer side surface of the floating body. Further, the fixing of the lid body 3 is not limited to the illustrated form, and for example, anchor bolts or nuts are embedded in the tubular wall of a concrete tubular body, and the lid body 3 comes into contact with the tubular body from the outside. The lid may be fixed by screwing a nut onto the anchor bolt or by inserting a bolt from the outside of the lid and screwing the nut onto the nut.

The floating structure B configured as described above is denser than a product made of a conventional concrete hollow box because the tubular body that constitutes the floating body A is formed by centrifugal molding. It becomes a product without air bubbles, and the watertightness is improved. As a result, the strength is improved even if the wall thickness of the cylinder wall is thin, and a floating structure that is lightweight and has excellent durability can be obtained. Then, a floating structure having a required area or buoyancy can be extremely easily configured by connecting an appropriate number of these floating bodies alone in the length direction, the width direction, and the height direction.

[0013]

[Effect of device]

 As described in detail above, the concrete floating structure of the present invention is constructed by attaching foam to the inside of a concrete cylinder made by centrifugal molding to form a floating body alone. Since an appropriate number is connected in the width direction and the height direction, it is possible to obtain a floating structure that is lightweight and has improved strength and excellent durability. The lighter weight makes it possible to obtain a large freeboard and facilitates the transportation from the factory to the site and the installation at the site. Moreover, since the floating bodies are connected not only in the length direction and the width direction but also in the height direction, the floating body can be easily constructed into a desired shape according to the purpose of use and the like. If it is damaged, it can be dealt with by replacing the floating body itself, which is very useful.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a single floating body constituting a floating structure according to the present invention.

FIG. 2 is a vertical sectional view taken along line (2)-(2) of FIG.

FIG. 3 is a partially cutaway perspective view showing an example of a floating structure configured by connecting floating bodies alone.

4 is a partially cutaway front view of FIG. 3. FIG.

5 is an enlarged vertical sectional view of FIG.

[Explanation of symbols]

 A ... Floating body alone B ... Floating structure 1 ... Concrete cylinder 2 ... Foam

Claims (1)

[Scope of utility model registration request] 1. A floating body is constructed by attaching a foam to the inside of a concrete cylindrical body formed by centrifugal molding, and the floating bodies are connected in an appropriate number in the length direction, width direction, and height direction of the floating body. Concrete floating structure.