JPH11270135A - Sheathing plate engineering method of earth floor slab construction joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheathing plate engineering method of earth floor slab construction joint capable of making the joint line straight and construction work easy. SOLUTION: A steel sheathing plate 1 having dowel stripe holes 2A to 2I for running sheathing stripes 12 through them and steel bar holes 3A to 3D and 4A to 4D for running anchoring steel bars 11 through them to be driven into the ground 10 is set on a specific position. After steel bars 11 are fixed by running them through steel bar holes 3A to 3D and 4A to 4D and anchoring them into the ground 10 and sheathing stripes 12 are inserted into sheathing stripe holes 2A to 21, a concrete earth floor slab 13 is formed by placing concrete.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dam construction method for a joint between slabs of a slab for forming a joint between slabs of a slab.

[0002]

2. Description of the Related Art Slab slabs are not the main structural members,
There is a growing demand for high quality concrete with few cracks. The joint is also provided with a joint that also serves as an induction joint, so that cracks are less likely to occur. By the way, conventionally, when forming a joint between slabs, a dowel hole is made in a wooden dam, a seam reinforcing bar is inserted, and the dam is fixed with a reinforcing bar and concrete is cast.

[0003]

Therefore, according to the conventional construction method, cracks are generated at the joints because the wooden dam is used, and the wooden dams are easily moved and the joint surface is not straight. There was a problem.
There are also other problems such as the position of the dowel streak is not determined, and a hole for the dowel streak must be provided in the dam for each construction.

[0004] It is an object of the present invention to provide a method of damming a joint between slabs between slabs, which can solve the above-mentioned problems in the prior art and has a straight joint line and easy construction. .

[0005]

A feature of the present invention to solve the above-mentioned problems is that, in a dam construction method of a joint portion between soil slabs, a dowel hole for passing a dowel bar and a fixing steel to be driven into the ground. Prepare a steel dam with a steel rod hole through which the rod is formed, and after fixing the steel dam in a predetermined position, drive the fixing steel rod into the ground through the steel rod hole and fix it, The present invention is characterized in that a dowel is inserted into the dowel hole, and then concrete is cast to form a joint between slabs.

[0006] The steel dam is firmly fixed at a predetermined position by driving a steel rod passed through a steel rod hole into the ground. Since the dowel is inserted into the dowel hole of the steel dam, concrete is cast, so that the joint surface is formed into a clean concrete surface and the joint surface is straight. As a result, the joint line becomes a straight line and the construction is facilitated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing an example of a steel dam used in the method according to the present invention. The steel dam 1 is made of a steel material having a U-shaped cross section, and dowel holes 2A to 2I for inserting and setting dowels are provided in the vertical portion 1A in the form of elongated holes at substantially equal intervals. . On the other hand, steel dam 1
In the horizontal portions 1B and 1C, steel rod holes 3A to 3D and 4 for passing a steel rod for fixing the steel dam 1 to the ground.
A to 4D are opened. The steel rod hole 3A is opposed to the steel rod hole 4A.
From the steel rod hole 4A. The same applies to the other steel rod holes 3B to 3D and 4B to 4D.

Next, with reference to FIG. 2, a description will be given of a dam board construction method for forming a joint portion between soil slabs using the steel dam board 1 shown in FIG.

First, as shown in FIG. 2 (a), a steel dam 1 is positioned at a predetermined position on the ground 10, and a fixing steel rod 11 is passed through the steel rod holes 3A to 4A. Then, the tip of the steel rod 11 is driven into the ground 10 to fix the steel dam 1. Although not visible in FIG.
A, 4A as well as the remaining steel rod holes 3B-3D and 4B
In the same way for ~ 4D, drive in a steel bar for fixing,
The steel dam 1 is firmly fixed in a required position by four steel rods.

Next, as shown in FIG. 2 (b), the dowel stoma 12 is inserted into each of the dowel stoma holes 2A to 2I and set. In FIG. 2B, only one of the nine dowel streaks inserted into the dowel stoma hole 2A is visible.

Next, as shown in FIG. 2 (c), casting concrete is poured using the steel dam 1 as a formwork.
Thereby, the concrete soil slab 13 is formed.

Thereafter, when the strength of the cast concrete forming the concrete soil slab 13 reaches a predetermined level, the steel rod 11 is pulled out and the steel dam 1 is removed. As a result, as shown in FIG. 2D, the concrete joint surface 13A of the concrete soil slab 13 is formed as a clean concrete surface because of the steel dam 1.
In addition, since the steel dam 1 is firmly fixed to a required position on the ground 10 by the steel rod 11, the joint line can be made straight.

Thus, according to the method shown in FIG.
The joint part of the soil slab has a straight joint line and is easier to construct than a conventional construction method using a wooden dam. The steel dam 1 can of course be reused any number of times.

The dimensions of the steel weir 1 shown in FIG. 1 are general weirs and have a length of 1800 mm.
It is needless to say that a length of 800 mm can be further prepared and the length can be adjusted appropriately. In this case, the number of dowel holes and steel rod holes can be reduced.

[0016]

According to the present invention, as described above, since a steel dam is used and fixed to the ground for construction, construction accuracy can be improved and cracks can be prevented. Further, the accuracy of the joint surface is improved, and a clean concrete surface can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a steel dam used in the method according to the present invention.

FIG. 2 is a process diagram for explaining an example of an embodiment of a dam board construction method according to the method of the present invention for forming a joint between slabs using the steel dam shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel dam 2A-2I Dowel hole 3A-3D, 4A-4D Steel rod hole 10 Ground 11 Steel rod 12 Dowel bar 13 Concrete slab

Claims (1)

[Claims] In a damping method for a joint between soil slabs, a steel dam is prepared in which a dowel hole for passing a dowel and a steel rod hole for passing a fixing steel rod driven into the ground are formed. Then, after installing the steel dam in a predetermined position, the fixing steel rod is driven into the ground through the steel rod hole and fixed, and a dowel is inserted into the dowel hole, and then concrete is poured. A dam construction method for a joint between slabs, wherein the joint between slabs is formed by performing.