JPS62148768A - Mold frame construction method of slab of concrete building - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a formwork construction method under a slab in a concrete building in which walls and beams are constructed using PC boards and the slab is constructed with cast-in-place concrete. be.

(Conventional technology) In recent years, high-rise houses and high-rise condominiums have P on their walls and beams.
I am using C board. However, building slabs are constructed using cast-in-place concrete due to problems with rainwater and water leakage.

Conventionally, the method of constructing formwork under the slab was to install joists (/→ and large This is a general construction method that uses pipe supports in the Ohiki/joist construction method, in which the formwork is assembled by combining the Ohiki (Hiki) and supporting the Ohiki (Ohiki) with a large number of pipe supports (E).

(Problem to be solved by the invention) In the above-mentioned conventional formwork construction method under the slab of concrete buildings, the pipe support (E) is placed below the slab (A).
It was a forest of trees and there was no work space.

On the other hand, the pipe support (E) cannot be removed until after the slab concrete has completely cured, so for a long period of time, the pipe support (E) will be in the way, making it difficult to perform internal finishing work on the lower floor. I can't.

Therefore, there are problems in that a large amount of materials are required, the construction period is long, and the construction cost is high.

(Means for Solving the Problems) Therefore, the present invention eliminates the large number of pipe supports that support the formwork under the slab, and allows the space below the formwork to be used for work, thereby solving the above problems. In order to solve the problem, after erecting a PC wall and a PC beam made of PC boards (the anchor (1) was first buried in Bl, and the PC wall and the PC beam), , Several H-shaped receivers are made by placing hardware (2) side by side at appropriate intervals in the horizontal direction, and attaching the receivers to the anchors by bolts (4) inserted through holes (3) in the lower piece of the hardware (2). (1) is tightened and fixed, the said receiver is passed inside the upper part of the hardware (2), and the flap (5) is fitted, and the flap (5) is inserted into the middle piece of the hardware (2). The bolt (6) threaded through the screw hole is adjusted up and down, and the bolt (depending on the force, on the PC wall (5) or the PC beam) is tightened and fixed, and the flaps on both sides ( 5), Place both ends of the lightweight support beams (8) on top of (5), and stack several lightweight support beams (8) in parallel at appropriate intervals, and then place the slab on top of the lightweight support beams (8). Place the weir plate (9).

(Function) On the opposing sides of the PC wall (3) or the PC beam (B), the flaps (5) are removably installed laterally through the hardware (2), and the flaps (5) on both sides of the brackets (5) are removably installed. (5) Several lightweight support beams (
A weir plate (9) is stretched over the lightweight support beam (8) to form a formwork under the slab, and slab concrete is poured onto the weir plate (9) to form the slab (8). Construct q.

(Example) To explain the structure of one embodiment of the present invention shown in FIGS. 1 to 4, (1) is a PC wall (3) and a P
The tip buried in the C beam (b) is an anchor, and the terminal Q (lI) is buried in the tip side.(6), (The force is A bolt is threaded through a threaded hole in the middle of the holder, and a washer αD and a presser washer (12) are fitted to the tips of the bolts so that they can only rotate freely.α
The country is a seat board that is placed on the bata (5) as needed.

Next, its effect will be explained. After constructing the PC wall (5) and PC beam (B) of a concrete building, for example, as shown in Fig. Place the lower piece of the hardware (2) on the receiver and insert the bolt (4) into the hole (
3) and the terminal (10), screw it into the screw hole of the anchor (1), and place several receivers on the opposite surfaces of the PC wall (5) and the PC beam (Bl) horizontally. Fix at appropriate intervals.

Next, on each side, several receivers are made of hardware (2)
After fitting the flap (5) inside the upper part of the bolt (
6) to adjust the installation height by raising and lowering the flap (5), then tighten the bolt (with force) and tighten the flap (5).
) to the PC wall or PC beam.

Next, place the seat plate a9 on the flap (5) as appropriate, and place the seat plate α9 on both sides. Place both ends of the lightweight support beams (8) on α■, and place several lightweight support beams (8) in parallel at appropriate intervals between the flaps (5) on both sides, and then A weir board (9) is placed on the several lightweight support beams (8) to form a formwork under the slab.

Therefore, a slab (q) is constructed by pouring slab concrete on the weir plate (9).

In the above embodiment, the weir plate (9) was placed directly on the lightweight support beam (8) to form the formwork under the slab, but the light support beam (8) and the weir plate (9) Similarly to the conventional formwork method shown in FIG. 5, a joist may be interposed between the slab and the joist, and a weir plate (9) may be placed on the joist to form the formwork under the slab.

(Effects of the Invention) The method for constructing forms under slabs for concrete buildings according to the present invention has the following remarkable effects.

(1) All formwork under the slab is supported by PC walls and PC beams, and there is no support such as pipe support below the formwork under the slab as in the past, so the internal space below the formwork is widened. You can form it and use it for your work. Therefore, work such as internal finishing on the lower floor is performed at the same time as work on the upper floor such as pouring slab concrete on the formwork, shortening the construction period and improving work efficiency.

(2) After installing the formwork under the slab, work such as internal finishing on the lower floor is carried out, so it is safe to work on the upper and lower floors at the same time.

(3) Since a large number of pipe supports are not required, it is not only convenient for work, but also reduces construction costs.

(4) Since the lid is adjusted up and down by the bolt in the middle piece of the support, it can be operated easily and quickly and always adjusted to the required height, regardless of errors in the anchor position of the PC wall or PC beam. It can be placed horizontally.

(5) The holder is connected to the PC by the bolt on the upper piece of the hardware.
Since it is fastened to the wall or PC beam, the lid is securely and securely fixed.

(6) Simple configuration and easy construction.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of the formwork under the slab of a concrete building showing an embodiment of the present invention, the bracket is an exploded slope view of the hardware attachment part, and Fig. 5 is a conventional concrete structure. FIG. 2 is a front cross-sectional view of the formwork under the slab of the building. (5)...PC wall, (B+...PC beam, (1)...
・The tip is an anchor, (2)...the h-shaped receiver is a hardware item, (3)
...Through hole, (4)...Bolt, (5)...Gutter,
(6)...Volt, (Force...Volt, (8)...
Light-weight support beam, (9)...Slab dam plate, Patent applicant: Japan Okabe Lease Co., Ltd. (044) Okabe Co., Ltd. agent Patent attorney Fumi Miyatake -1・1・-・
(：Quality −′・ Now −15−m− ?−−− Long bolt Ih Oζ"Light bolt support Thread core slab growth I# 3-11 hole

Claims (1)

[Claims] Pre-installed anchors are buried in the PC walls and PC beams made of PC boards, and after the PC walls and PC beams are erected, several ■-shaped brackets are placed side by side at appropriate intervals in the lateral direction on their opposing surfaces. Then, tighten and fix it to the pre-attached anchor using a bolt inserted through the hole in the lower piece of the receiving metal piece, fit the flap inside the upper part of the receiving metal piece, and then attach the flap to the intermediate piece of the receiving metal piece. Adjust it up and down using the bolts threaded through the screw holes, tighten and fix it to the PC wall or PC beam using the bolts threaded through the screw holes on the top piece, and place both ends of the lightweight support beam on the flaps on both sides. A formwork construction method under the slab of a concrete building, which is characterized by placing several lightweight support beams in parallel at appropriate intervals and placing a slab weir plate on top of the lightweight support beams.