JPH0874230A - Dam core curing mat - Google Patents

Abstract

PURPOSE: To facilitate the construction, transportation and storage without staying of rain water and with little leakage of water from a joint. CONSTITUTION: An air mat l provided with an airtight type hollow space 4 is formed respectively between each of triangle roof type frames 2 by spreading a soft impervious sheet 3 in a circumference of a large number of the triangle roof type frames 3 arranged in parallel with specified intervals and within a surface of each of the triangle roof type frames 2. A space part 6 surrounded by a skirt 5 hanging down in the circumference of a bottom surface and its inside and consisting of the soft impervious sheet is formed on a bottom part of this air mat 1. An air pipe to force feed air to each of the hollow spaces 4 and the space part 6 is arranged on a required position of the air mat 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mat for curing a dam core in which concrete is cast, and more particularly to a mat for covering the dam core when it rains.

[0002]

2. Description of the Related Art Conventionally, a waterproof sheet is generally laid as a facility for covering a dam core in the case of rainfall or the like, or a temporary all-weather large roof is provided.

[0003]

In the conventional waterproof sheet, rainwater is likely to collect, there are many leaks from the joints, and it takes a lot of time and labor to lay and remove manually. Rainwater pools, mud stains, etc. Therefore, there are problems that removal, transportation and storage are not easy, and that repeated use may cause pain.

Further, in the all-weather type large roof, there is a problem that the installation thereof is very expensive and the assembling and disassembling thereof is not easy.

[0005]

According to the present invention, a flexible impermeable sheet 3 is provided around a large number of triangular roof frames 2 arranged in parallel at predetermined intervals and in the plane of each triangular roof frame 2.
To form an air mat 1 in which airtight chambers 4 are respectively provided between the triangular roof frames 2 and 2, and the bottom of the air mat 1 has a flexible structure that hangs around the bottom surface and inside thereof. A space 6 surrounded by a skirt 5 made of an air-impermeable sheet is formed, and air pipes 7 and 8 for pumping air to the air chambers 4 and the space 6 are provided at required positions of the air mat 1. We propose a dam core curing mat which is characterized by

[0006]

By introducing air into each of the chambers 4 and inflating them, a triangular roof-shaped air mat 1 bulged like a balloon reinforced by the triangular roof frame 2 is formed, and in this state, the skirt 5 on the bottom surface is formed. By sending air to the space portion 6 surrounded by, the mat 1 floats up like a hovercraft.

Therefore, in this floating state, the mat 1 can be towed and transported by a vehicle 11 such as a truck equipped with an air compressor 12, or can be set on a dam core when it rains and cured. Since it is a roof type with a downward slope from the center of the top surface to both sides, drainage of rainwater is also good.

Further, by extracting the air from each vacant chamber 4, the mat 1 can be contracted in a bellows shape and folded to be stored in a small space in standby or stored.

[0009]

Example A dam core curing mat 1 is provided around a plurality of triangular roof frames 2 made of a lightweight and high-strength material such as FRP arranged in parallel at predetermined intervals, and in the plane of each triangular roof frame 2. A light and flexible impermeable sheet 3 such as a plastic sheet is stretched to form a balloon-shaped air mat in which airtight chambers 4 are provided between the triangular roof frames 2 and 2.

A skirt 5 made of a flexible and impermeable sheet such as a plastic sheet is hung downward around the bottom surface of the curing mat 1 and inside thereof.
A plurality of space portions 6 surrounded by these skirts 5 are formed below the bottom surface.

Further, flexible air pipes 7 and 8 for pumping air to the vacant chambers 4 and the spaces 6 on the bottom surface of the curing mat 1 are provided at required positions such as the bottom surface of the curing mat 1. Air outlets 9 and 10 with valves are provided in the portion corresponding to each vacant chamber 4 and the space portion 6, respectively.

The curing mat 1 is integrally formed, for example, in an area of 30 m square or the like, and it is used as a single unit. If necessary, the curing mats 1 and 1 are joined and integrated on the front and rear surfaces (velvet fastener, etc.). Adhere with) and use.

When the curing mat 1 is used at the time of rainfall or the like, air is sent under pressure to the air pipe 7 by the air compressor 12 mounted on the vehicle 11 such as a truck,
Each chamber 4 is filled with air from the air outlet 9 with a valve and inflated like a balloon.

In this state, air is sent to the air pipe 8 by the compressor 12 and from the air outlet 10 with a valve to the space 6 surrounded by the skirt 5 on the bottom surface, so that the mat 1 is formed like a hovercraft. The mat 1 is lifted up, and in this lifted state, the mat 1 is towed by the vehicle 11 to be transported, and is installed on the dam core to cure the dam core.

When the curing mat 1 is not used,
By extracting the air from each vacant chamber 4, the mat 1 is contracted into a bellows shape and is compactly folded and is stored or stored in a small space.

[0016]

As described above, according to the present invention, air is introduced into each of the chambers and inflated, so that a lightweight and inexpensive air having a triangular roof shape inflated in a balloon shape reinforced by a triangular roof type frame. A mat is formed, and by sending air to the space surrounded by the skirt on the bottom in that state, the air mat can be lifted by air pressure like a hovercraft, and in this lifted state, the air mat is towed to the vehicle. It can be easily transported and moved, or can be easily installed and cured on the dam core when it rains. Also, since it is a roof type that slopes down from the center of the top surface to both sides, rainwater drainage is also good.

Further, by extracting the air from each chamber, the air mat can be contracted in a bellows shape and folded to be stored or stored in a small space.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an outline of a curing mat of the present invention.

FIG. 2 is a vertical sectional side view of a side portion and a central portion of the curing mat of the present invention.

FIG. 3 is a perspective view of a curing mat according to the present invention.

FIG. 4 is a perspective view showing a shrinking and folded state of the curing mat of the present invention.

FIG. 5 is a perspective view showing a transportation movement state of the curing mat of the present invention.

[Explanation of symbols]

 1 Curing mat 2 Triangular roof frame 3 Impermeable sheet 4 Vacancy 5 Skirt 6 Space 7 Air pipe 8 Air pipe 9 Air outlet with valve 10 Air outlet with valve 11 Vehicle 12 Air compressor

Front page continuation (72) Inventor Tadashi Terasaki 2-1026 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. (72) Kenichiro Aoshima 2-1026 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Kogyo Co., Ltd. (72) Keiji Miyazaki, 2-10-26 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Co., Ltd. (72) Ken Arai, 2--10-26, Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd.

Claims (1)

[Claims] 1. A flexible impermeable sheet is stretched around a large number of triangular roof frames arranged in parallel at predetermined intervals and in the plane of each triangular roof frame, and each triangular roof frame is provided between the triangular roof frames. An air mat having an airtight chamber is formed, and a space surrounded by a skirt made of a flexible impermeable sheet hanging around the bottom surface and the inside of the mat is formed at the bottom of the mat. A dam core curing mat, characterized in that an air pipe for pumping air to each of the vacant chambers and spaces is provided at a required position.