JPS637648Y2 - - Google Patents

Description

[Detailed explanation of the idea] After the columns are cast in advance of the beam up to the bottom end of the beam,
In the method of constructing a building frame using PC beams,
Ensuring the mutual accuracy of the main reinforcements determines the success or failure of the construction method.

This proposal was proposed for the purpose of providing a new and useful column main reinforcement fixing device that can easily and accurately hold the position of column main reinforcements.Reinforcing bar insertion holes are drilled at each column main reinforcement arrangement position, and Attach a ruler plate with an opening for concrete pouring to the top of the column formwork,
A column main reinforcement having a diameter smaller than that of the reinforcing bar insertion hole is inserted into the reinforcing bar insertion hole, and a pair of semi-cylindrical column main reinforcement fixing plugs are fitted between the column main reinforcement and the reinforcing bar insertion hole. This is a characteristic feature.

In this case, as mentioned above, the ruler plate attached to the upper end of the column has insertion holes larger than the reinforcing bars at each predetermined reinforcement position, so the main reinforcement of the column can be easily inserted into the holes. The main reinforcing bars of the same column can be placed almost at the predetermined positions. Furthermore, by fitting a cap between the main reinforcement of the column and the reinforcing bar insertion hole, the main reinforcement of the column is accurately and firmly fixed at a predetermined reinforcement position.

In this way, according to the present proposal, the accuracy of the reinforcement position of the column main reinforcement is ensured, and the column that is fitted between the column main reinforcement and the reinforcement insertion hole of the ruler plate and fixes the column main reinforcement in the same hole. Since the main reinforcing bar fixing plug is composed of a pair of semi-cylindrical bodies, the plug can be easily attached to and removed from the reinforcing bar insertion hole.

Furthermore, since the ruler plate is provided with an opening for pouring concrete, there is no risk that the apparatus of the present invention will cause problems in pouring concrete by pouring concrete through the opening.

Furthermore, the ruler plate is attached to the top surface of the formwork,
This proposal has many advantages, such as not being buried in the poured concrete and being reusable.

The present invention will be described below with reference to the illustrated embodiments.

Reference numeral 1 denotes a ruler plate, in which reinforcing bar insertion holes 2 having a slightly larger diameter than the main reinforcing bars of the same column are bored at each reinforcing position of the main reinforcing bars of the column, and openings 3 for pouring concrete are further provided.

The ruler plate 1 is attached to the upper end surface of the column formwork 4 with a fixing metal fitting 5.
It is fixed through. Thereafter, a column main reinforcement 6 having a diameter smaller than that of the hole 2 is inserted into the reinforcing bar insertion hole 2, and a synthetic resin flanged cylindrical body is divided into two parts between the column main reinforcement 6 and the reinforcing bar insertion hole 2. A pair of semi-cylindrical column main reinforcement fixing plugs 7, 7 are fitted, and the column main reinforcement 6 is thus accurately fixed in a predetermined position.

Thereafter, concrete is poured into the formwork 2 from the concrete pouring opening of the ruler plate 1 up to the lower end of the beam, and after the poured concrete has hardened, the plugs 7, 7 are removed, and the ruler plate 1 is is removed from the column formwork 4 for reuse.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view showing an embodiment of the column main reinforcement fixing device according to the present invention, Figure 2 is a plan view of a ruler plate, and Figure 3 is a plan view of a ruler plate.
The figures are a view taken in the direction of the arrows in FIG. 2, FIG. 4 is a plug for fixing the column main reinforcement, and FIG. 5 is a longitudinal sectional view thereof. 1... Ruler plate, 2... Reinforcing bar insertion hole, 3... Opening for concrete pouring, 4... Column formwork, 6... Column main reinforcement.

Claims (1)

[Scope of utility model registration request] Reinforcing bar insertion holes are drilled at each column main reinforcement placement position, and a ruler plate with an opening for concrete placement is attached to the upper end of the column form, and a column main reinforcement with a smaller diameter than the same hole is inserted into the reinforcing bar insertion holes. A column main reinforcement fixing device characterized in that a pair of semi-cylindrical column main reinforcement fixing plugs are fitted between the column main reinforcement and the reinforcing bar insertion hole.