JP2995347B2 - Construction method of RC structure with floor height - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a high-rise RC structure.

[0002]

2. Description of the Related Art When constructing a high-rise RC structure, it is impossible to cast concrete at one time, and it is necessary to cast concrete in a plurality of times.

[0003]

In the above-mentioned conventional method, the strength and rigidity of the panel are not sufficient, and a thick material is used. Therefore, it takes a lot of time and labor to assemble and disassemble the formwork.
Converting the panels after placing concrete required scaffolding replacement, which required a great deal of time and effort. The present invention has been proposed in view of the problems of the prior art,
Using a lightweight and highly rigid panel, the panel supports a temporary stage, and after casting concrete, it is possible to convert the panel without changing the temporary stage. The point is to provide a construction method.

[0004]

In order to achieve the above-mentioned object, according to the construction method of an RC structure having a floor height according to the present invention, a panel formed by sandwiching front and back surfaces of a corrugated steel sheet with plywood is relatively formed. And place the concrete casting surface on each panel
Install the temporary stage bracket on the outer surface opposite to
Bolts penetrate the stage bracket and panel joints.
The panel is set at a predetermined position by screwing it into an insert fixed in the concrete body portion through the passage , and a temporary stage is installed between the outer surfaces of the opposed panels by bridging a temporary stage between the metal fittings. , Temporary stage
With the bolts supported by the panel
Step concrete is cast and then the bolt is loosened to bridge the temporary stage to the lower concrete frame.
While leaving the panel, the detached panel is moved to the upper concrete placing position and set.

[0005]

According to the present invention, the corrugated steel sheet is sandwiched on both sides by plywood as described above to form a lightweight, highly workable, and highly rigid panel, which is thickened when the panel is set. The use of pipes is unnecessary, and a temporary stage fitting is provided on the outer surface of the panel opposite to the concrete casting surface, and an insert for fixing bolts penetrating the fitting and the panel to the concrete frame. By screwing the panel to a predetermined position and setting the panel to a predetermined position, and bridging the temporary stage using the temporary stage bracket of the opposing panel, the shelf scaffold can be attached to the temporary stage without using a framework scaffold. It supports and performs necessary work on the same scaffold.

When the lower concrete placing operation is completed, the bolt screwed to the insert is loosened, and the stage is moved to the upper concrete placing position without removing the temporary scaffold. This makes it possible to convert panels without changing the scaffolding.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of the present invention applied to the construction of an underground beam pit having a high floor. Reference numeral 1 denotes a panel formed by sandwiching both front and back surfaces of a corrugated steel plate 2 such as a deck plate with a plywood 3 such as a veneer plywood, and 4 denotes a support. After the concrete of the pressure plate is cast, the underground beams are arranged and the panel 1 is set on the side surface of the underground beam pit.

FIG. 1 shows details of a mounting portion of the panel 1, and a vertical piece of a temporary stage receiving member 5 made of an angle material disposed on the panel 1 and an outer surface opposite to a concrete casting surface thereof. Are screwed to the insert 7 fixed in the skeleton, and the temporary stage 8 is bridged between the horizontal pieces of the metal fittings 5 on the opposing panel 1. 9 is a beam of the temporary stage 8,
Reference numeral 10 denotes a scaffold plate supported on the beam 9, and reference numeral 11 denotes a bolt for fixing the temporary stage 8 to a horizontal piece of the receiving member 5.

Further, by providing a joint portion between the insert 7 of the panel 1 and the metal fitting 5 with the bolt 6 at the joint portion of the panel 1, the panel can be diverted without removing the temporary stage 8 at the time of removal from the mold. To For this reason, a U-shaped cutout 1a is provided at the edge of the panel 1, and the bolt 6 is inserted into the cutout 1a.

According to the embodiment shown in the drawings, the panel 1 is made of a vertically lightweight and highly rigid member in which the front and back surfaces of the corrugated steel plate 2 are sandwiched between plywoods 3. The temporary stage 8 can be supported on the panel 1 itself without using any material. Therefore, according to the illustrated embodiment, the shelf scaffold is supported by the panel 1 without using the framework scaffold, and the bolt 6 is slightly loosened when the mold is removed from the underground beam after completion of the work of placing the lower concrete a. Even if the temporary stage 8 is not removed, the panel 1 can be diverted as shown by an arrow in FIG. After the completion of the placing of the upper concrete b, the formwork of the slab c is installed, and the upper part of the underground beam and the slab are arranged, and the concrete is placed.

[0011]

According to the present invention, as described above, both the front and back surfaces of the corrugated steel sheet are sandwiched between plywoods, so that they are lightweight and have good workability.
In addition, a panel having high rigidity is formed, and the use of thick pipe ends is unnecessary when the panel is set, so that temporary materials can be saved. In addition, a temporary stage is attached to the pipe itself, the frame scaffold is not used, the shelf scaffold is supported by the panel, and after the concrete is cast, the panel can be diverted without changing the scaffold, and the work space can be used. And the efficiency of dismantling work and finishing work can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an arrangement portion of a panel and a temporary stage in an embodiment of a method of constructing a RC structure having a floor height according to the present invention.

FIG. 2 is a plan view of a panel used in the method of the present invention.

FIG. 3 is a plan view showing a joint portion of the panel.

FIG. 4 is a partial plan view showing a joining edge of the panel.

FIG. 5 is a longitudinal sectional view showing a state where the present invention is applied to construction of an underground beam pit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel 2 Corrugated steel plate 3 Plywood 4 Yuzuki 5 Temporary stage bracket 6 Bolt 7 Insert 8 Temporary stage 9 Beam 10 Scaffold plate 11 Bolt

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Norio Mogi 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (56) References JP-A-54-63521 (JP, A) JP 42-2547 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 11/00 E04G 11/20 E04G 11/22 E04G 3/04

Claims (1)

(57) [Claims] Both the front and back surfaces of the 1. A corrugated steel disposed relative to the panel formed by pinched plywood, established a temporary stage receiving brackets on the outer surface of the side opposite to the concrete placing設面 of each panel, temporary Bolts on the stage bracket and panel joints
The screw is screwed into an insert fixed in the concrete frame by setting the panel at a predetermined position, and a temporary stage is bridged between the metal fittings and a temporary stage is installed between the outer surfaces of the opposing panels. Then, with the temporary stage supported on the panel with bolts,
And Da設the lower portion concrete in the panel, then the lower portion concrete skeleton loosen the bolt
A method of constructing an RC structure having a high floor, wherein a detached panel is moved to an upper concrete placement position and set while a temporary stage is left as a bridge .