JP4761629B2 - Concrete formwork and moving method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a concrete (including mortar) formwork suitable for use in the sea (underwater), of course, and a method for moving the same.
[0002]
[Prior art]
When constructing a structure with concrete, it is generally constructed using a forming mold.
Such a mold is generally used by assembling a wooden or metal panel-shaped mold.
[0003]
[Problems to be solved by the invention]
When constructing a structure with such a formwork, especially in the case of construction involving underwater work, there is a problem that the wooden formwork is very difficult to handle because of its large buoyancy.
In addition, since the metal mold is assembled by a connecting tool such as a bolt, there is a problem that the work in the sea takes a long time and the work of the diver is difficult and the construction cost is very high.
[0004]
Furthermore, the foundation ground in the sea where these molds are installed often has unevenness and unevenness, and there is a problem that gaps are formed between the molds and concrete leaks.
[0005]
[Means for Solving the Problems]
Therefore, the present invention forms a surface having an area with a predetermined width on the bottom surface by the elastic material, and the bottom surface is deformed according to the surface of the foundation ground to be installed due to the elasticity and flexibility of the elastic material. The two main bodies having improved adhesion as shown in FIG. 2 are opposed to each other with a predetermined interval, and both the opposed bodies are connected by a spacer to form a formwork. Even if there are irregularities, it can be installed following the surface.
Furthermore, the present invention provides a method for moving a concrete formwork characterized in that a buoyant body is connected to a formwork or a single body to move the formwork or the body in the sea. Made it possible to use.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory perspective view of a formwork. In the figure, reference numeral 1 denotes a main body, which is a flexible columnar body made of an elastic material such as rubber or synthetic resin, and a cross-section of its peripheral surface shape, height, etc. The shape is arbitrary, and may be hollow or solid as shown.
[0007]
The elastic material may be a simple substance, or a composite material in which a reinforcing material such as a woven fabric or a nonwoven fabric made of natural fiber, synthetic fiber, metal or the like is embedded.
Furthermore, the specific gravity may be increased by mixing metal powder or the like in the elastic material as necessary.
The main body 1 thus made is opposed to each other with a predetermined interval, and a bar-like or chain-like spacer 2 is arranged on the inner side surface 5 thereof at a predetermined interval. It is supported by the locking tool 3 so that the predetermined interval can be maintained.
[0008]
As shown in FIG. 2, the underwater concrete can be placed at predetermined intervals formed by the main body 1 by assembling the main body 1 in this manner on the foundation ground in the sea. At this time, the opposed inner side surfaces 5 of the opposed main bodies 1 become the molding surface of the structure 8 formed by placing concrete as shown in FIG.
Thus, when the formwork 4 is installed on the foundation ground, the main body 1 is made of an elastic material, so that it has elasticity and flexibility, so that its bottom surface 6 is deformed according to the surface of the foundation ground, and is almost the foundation ground. The concrete does not leak even if the concrete is placed, or it does not leak greatly even if it leaks.
[0009]
Therefore, the elastic body constituting the main body 1 may be configured by changing the elastic coefficient and flexibility of the elastic body constituting the side surface and the bottom surface, and the elastic body constituting the bottom surface is more easily deformed. May be.
In addition, at the both ends of the mold 4, a concrete outflow prevention plate such as an elastic material closing plate or the like is provided in the same manner as the main body when placing concrete.
[0010]
In consideration of use in the sea, the bottom surface 6 of the main body has a predetermined width and a surface with a certain area in order to improve stability, followability on the ground and adhesion. Good.
If necessary, the height can be increased by stacking the molds 4 assembled in this way.
[0011]
After the concrete is hardened, the locking tool 3 is released, the main body 1 is removed, and the spacer 2 is buried as it is.
When it is not desired to embed the spacer 2, as shown in FIG. 4, a bridge-like spacer 2 bent into a handle shape or a curved shape is attached to be connected to the upper portion of the main body 1 and connected to be held and fixed. Thus, the spacer 2 can be removed together with the main body 1 after the concrete is hardened without the spacer 2 being buried in the concrete when the concrete is placed.
[0012]
Next, in order to move such a mold 4 in the sea, as shown in FIG. 5, the buoyancy body 7 is attached to the mold 4 or the main body from which the spacer 2 is removed as shown in FIG. By attaching the, the weight of the main body 1 can be reduced and moved. The degree of weight offset is arbitrary, and the formwork 4 or the main body 1 does not necessarily have to be completely floated on the foundation ground, but if the body 4 is moved while dragging on the foundation ground, the main body 1 may be damaged. Yes, it is not preferable when the moving distance is long.
[0013]
By attaching the buoyancy body 7 and imparting buoyancy to the mold 4 or the main body 1 in this way, the underwater work at the time of placing the mold 4 or the main body 1 or demolding becomes extremely easy.
The buoyancy body 7 may have any shape or configuration. As shown in the drawing, the buoyancy body 7 may be an integral long body along the main body 1, a plurality of short ones connected, or a balloon-like one connected. A shape such as a combination of them may be used. Further, in a structure having a gas or liquid in the buoyancy body, the buoyancy can be adjusted by adjusting the amount of the gas or liquid.
[0014]
Therefore, since the mold 4 or the main body 1 can be freely moved in the sea, the cross-sectional shape, size, length and the like of the main body 1 can be freely selected, and the length is very long. The main body 1 can be formed and used. Furthermore, the overall shape of the main body can be used not only in a straight shape but also in a bent shape.
[0015]
【The invention's effect】
According to the present invention described in detail above, two main bodies formed of an elastic material are opposed to each other at a predetermined interval, and both are connected by a spacer to form a formwork. Even if there is unevenness, it can be installed following the surface, and the concrete can be placed without any waste along the surface shape of the foundation ground.
[0016]
In addition, by connecting a buoyant body to the formwork and the main body so that the formwork and the main body can be moved in the sea, it becomes possible to use large and long formwork, and less work in the sea. It has an effect that a stable mold can be obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view of a formwork. FIG. 2 is an explanatory cross-sectional view showing a use state. FIG. 3 is an explanatory perspective view of a formwork showing another example of a spacer. 5] Explanatory diagram showing the moving state of the mold [FIG. 6] Explanatory diagram showing the other moving state of the mold
DESCRIPTION OF SYMBOLS 1 Main body 2 Spacer 3 Locking tool 4 Formwork 5 Inner side surface 6 Bottom surface

Claims (2)

A surface having a predetermined width and an area is formed on the bottom surface by the elastic material, and the bottom surface is deformed according to the surface of the foundation ground to be installed by the elasticity and flexibility of the elastic material so as to follow the surface of the foundation ground. A concrete formwork characterized in that two main bodies with improved adhesion are opposed to each other at a predetermined interval, and the opposite faces are connected by a spacer to form a formwork. Method of moving a concrete formwork which is characterized in that so as to move the mold in the sea and connecting the buoyant body in a mold according to claim 1.

Images