JPS60159252A - Construction of concrete floor panel - 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] The present invention relates to a construction method for concrete 1/floor slabs.

Conventionally, to construct a concrete slab (so-called concrete slab), a formwork was set up using plywood, square timber, supports, etc. from the inner edge of the upper end of the wall to the area corresponding to the inner floor surface, and at the same time The upper outer edge of the corresponding wall is also plywood.

A formwork is established and framed using square timbers, separators, etc., reinforcing bars are placed in it, and concrete is filled in. After the hardening, each formwork is demolished, and the outer surface of the concrete 1/floor slab, i.e., the wall. The outer surface of the upper outer edge where the formwork was provided is either coated with finishing mortar or covered with tiles.

However, this method not only takes time to install and dismantle the formwork, prolonging the construction period, but also has disadvantages in that the formwork is disposable, making it uneconomical and raising the cost of construction.

Furthermore, it takes time and effort to apply the finishing mortar or to lay the tiles, and the tiles tend to peel off because they are applied or laid after the concrete has hardened.

The present invention aims to eliminate the above-mentioned conventional drawbacks all at once.

In the present invention, a frame plate made of ceramic or fiber-reinforced concrete is installed on the outer edge of the upper end of the wall, and a locking metal fitting attached to the back side is provided at a position corresponding to the floor surface inside from the inner edge of the upper end of the wall. The frame is fixed to a formwork, reinforcing bars are placed therein, concrete I- is filled, and as the frame hardens, the frame plate is integrated with the reinforced concrete layer. As a result, the frame board made of ceramics, etc. is consolidated and integrated into one layer of reinforced concrete 1, and this frame board itself constitutes the outer surface of the concrete 1-floor slab. Installation and demolition work, as well as the work of laying tiles or applying finishing mortar on the external surface, are completely eliminated.

An example in which concrete 1 to floor slabs are constructed on the illustrated masonry wall will be described below.

1 is a masonry wall of a building constructed of ceramic blocks 2, and plywood 3, 4. A formwork 7 is provided by square timbers 5 and supports 6.

The bipedal plywood 3 stands up along the inner edge of the upper end of the wall 1 and has a height approximately equal to one ceramic block 2. Also,
The edge of the plywood 4 is superposed and fixed to one end of the plywood 3 and stretched horizontally.

Reference numeral 8 designates a ceramic frame board installed at the outer edge of the upper end of the wall 1, which is shaped like a road board with a width of 154mm, a height of 300mm, and a thickness of 2311mm, with the upper end bent diagonally to the back side, and the lower end A locking part 9 is horizontally protruded by bending the part at right angles to the back side, and a 1° through hole for screwing is formed in the center of the locking part 9, and dovetail grooves are formed in two places on the upper and lower parts of the back side. 11 and 12 are formed parallel to each other across the left and right edges.

Reference numeral 13 designates locking fittings for connecting four frame plates 8 at a time and fixing them to the formwork 7. The locking fitting 13 is made by welding a short steel plate 15 with a through hole formed to one side of a long and slender steel plate 14, fitting one end of a steel rod 16 bent at right angles into this through hole, and welding the steel rod. A steel plate 18 having a row of through holes 17 for nailing is welded to the other end of the rod 16.

The steel plate 14 and the steel rod 16 are arranged in a substantially T-shape, and the steel plate 1
4 is vertical and the steel plate 18 is horizontal, and the steel plate 14 has a width and a dovetail groove 11□12 to tightly fit into the dovetail 12.
The length of the steel rod 16 is approximately three times that of the ceramic block 2, and the steel rod 16 is slightly longer than the thickness of the ceramic block 2.

In order to arrange the frame boards 8 in rows on the upper outer edge of the wall weight and frame them with the formwork 7, first arrange the two frame boards 8, 8 with a joint interval, and attach the locking fittings 13 to the dovetails au, 11. The 8IiI plate 14 is tightly fitted so that both sides protrude left and right. These frame plates 8, 8 are placed on the outer edge of the upper end of the wall 1, and the locking portions 9,
Into the through-holes 10 and 10 of 9, insert the ports 19 previously established on the outer edge of the upper end and tighten the nuts 20. At the same time, the steel plate 18 is applied to the plywood 4 of the formwork 7, and the nails are inserted through the through-holes 17. Nail and fix.

Thus, the frame plates 8, 8 established at the outer edge of the upper end of the wall 1
At both sides of 0, put another frame plate 8, 8 with dovetail grooves 11.11.
are fitted and placed on the slope 14, and the nuts 20 are tightened to the ports 19 inserted into the through holes 10 of the locking portions 9, and these four frame plates 8 are connected to each other by the locking metal fittings 13. and is fixed to the formwork 7.

Further, in the same manner as in the case of the four frame plates 8 described above, a required number of rows of frame plates 8 are provided at the outer edge of the upper end of the wall 1 at a position opposite to the formwork 4 to form a frame. In addition, a joint interval is provided between each of the above-mentioned frame boards 8, and a punkin (made of foamed plastic deck) is placed there.
(not shown) is fitted.

Next, the necessary reinforcing bars 21 are placed in the bipedal framework and tightened at key points to the longitudinal bars 22 of the wall 1 with wire, and the upper end portions of each of the frame boards 8 arranged in a row have a substantially reverse cross section. Elongated metal restraining rods 23 are fitted and concrete is filled, and as the concrete hardens, each frame plate 8 is integrated with a reinforced concrete layer (not shown), and after hardening, the formwork 7 is demolished. , remove the restraining rod 23 and packing and apply joint mortar.

The outer surface of the concrete floor plate thus constructed is constituted by the frame plate 8 itself integrated with the reinforced concrete layer.

In addition, in the above embodiment, the case where a ceramic frame plate is used has been described, but the present invention is not limited to this, and a frame plate made of fiber-reinforced concrete may also be used.

In addition, although the two frame boards were connected in advance with a locking metal fitting and then placed on the upper end of the wall, the number of frame boards is not limited to two. The appropriate number of sheets may be one or three or more.

As is clear from the above description, according to the present invention,
A frame plate made of ceramic or the like was established to correspond to the outer surface of the concrete floor slab to be constructed, and was consolidated and integrated with the reinforced concrete layer, and this frame plate itself constituted the outer surface of the concrete floor slab. This eliminates the need to demolish the concrete after it has hardened, unlike the conventional formwork for the exterior.
It is possible to shorten the construction period and reduce construction costs.

In addition, since the outer surface of the concrete 1-floor slab is composed of a frame plate made of ceramic or fiber-reinforced concrete, it is necessary to separately perform work such as laying tiles on the outer surface or applying finishing mortar. It is economical and the construction period can be shortened because there is no such thing.

Furthermore, the ceramic frame board mentioned above is placed on the top end of the wall and the locking metal fittings attached to the back side are fixed to the formwork. Not only does the frame plate not rub or fall carelessly, it also prevents the frame plate from shifting or falling when filling with concrete, making it easy to work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are a front view and a side view of a ceramic frame plate, and FIG. 3 is a perspective view showing a state in which locking metal fittings are attached to the back surfaces of two frame plates. FIG. 4 is a side view of the main parts showing a state in which reinforcing bars are arranged in a framework made up of frame plates and formwork. 1... Wall, 3, 4... Plywood, 5... Square timber, 6...
... The boat, 7... Wall, 8... Frame board, 13...
- Locking metal fitting, 21...Reinforcing bar. Patent Applicant: Hokkaido Rural Industrial Co., Ltd., Off Map, Entrance 2, Entrance 3

Claims (1)

[Claims] 1. The process of creating a formwork using plywood, square timber, supports, etc. from the inner edge of the upper end of the wall to the inner floor surface, and establishing a frame board made of ceramic or fiber-reinforced concrete at the outer edge of the upper end of the wall. A process of fixing the locking metal fittings attached to the back side of the shiso to the above-mentioned formwork to frame it, placing reinforcing bars in the above-mentioned framework, filling it with concrete, and as it hardens, the above-mentioned frame plate is integrated with the reinforced concrete layer. A method for constructing a concrete floor plate, comprising the step of: thereafter, removing the formwork.