JPH06101297A - Precast slab for floor slab and half precast slab - Google Patents

Abstract

PURPOSE:To correspond to the alteration of the room planning of multiple dwelling houses, etc., easily by burying a jig bearing rail with an inward extended groove to the underside of a precast slab for a floor slab, sliding a hanging jig and changing the position of mounting. CONSTITUTION:Hanging-jig bearing rails B with inward extended grooves (a) are buried to the underside of a floor slab S consisting of a precast slab or a half precast slab. Hanging jigs (b) are installed slidably to the grooves (a) while clamp hardware (c), binders (d), hangers (e), etc., are mounted to the hanging jigs (b). The hanging jigs are moved in response to the variation of specifications and the like, and a piping, etc., are set up easily. Accordingly, the mass production of the precast slabs is enabled, thus reducing cost.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a precast plate and a half precast plate for floor slabs.

[0002]

2. Description of the Related Art As an industrialized construction method for building a building, an example of using a floor slab as a precast plate or a half precast plate is known. In these construction methods, the floor slab is composed of a precast plate, a half precast plate that becomes the driving formwork, and cast-in-place concrete cast on the top surface of the floor slab. And compared with the conventional method of placing concrete,
There is little support work to support the floor slab, there is no need to assemble and dismantle the formwork for the floor slab, and the support work can be dismantled at a relatively early time, so the interior work of the building is conventional. Compared with the construction method, it can start work at an early stage, and it has excellent advantages in terms of labor saving and shortening the construction period.

However, when the floor slab is a precast plate or a half precast plate, the following problems have conventionally occurred. When equipment piping is installed on the ceiling of the building or when the ceiling is a double ceiling, it is necessary to bury the insert metal fittings for fixing the equipment piping and the hanging jig of the ceiling member at the predetermined position on the bottom surface of the floor slab. However, in the case of a building with various floor plans such as an apartment house, when manufacturing precast plates or half precast plates for floor slabs of each dwelling unit, insert metal fittings are prepared in advance according to various floor plans. However, it is not suitable for mass production and the cost is inevitably high because many types of precast products with different embedded positions of the insert metal are required.

In the case of an apartment house, a considerable period of time is required from land acquisition to planning, designing, and construction.
Due to factors such as changes in socio-economic conditions, the floor plan of the dwelling unit may change immediately before construction, but in such a case, the embedding position of the insert metal is decided in the conventional precast plate and half precast plate. , I cannot respond to changes in floor plans.

[0005]

SUMMARY OF THE INVENTION The present invention has been made with the above points in mind, and its purpose is to enable mass production and to easily change the layout of dwelling units. It is to provide a precast plate and a half precast plate for a floor slab that can be used.

[0006]

The technical means taken by the present invention to achieve the above object are as follows. That is, a feature of the present invention resides in that a hanging jig support rail having a downwardly widening groove which is opened downward is embedded and fixed to the lower surface of the precast plate or the half precast plate for the floor slab.

[0007]

According to the above construction, when the ceiling equipment pipe or the ceiling jig is inserted into the deep groove of the hanging jig support rail and is supported by both edges of the groove, the hanging jig is fixed. By sliding the tool along the hanging jig support rail, the position of the hanging jig can be changed, and the flexibility of the mounting position of the hanging jig is great, so the cost can be reduced by mass production of precast products. is there.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, A is a precast plate for a floor slab according to the first invention, and a plurality of hanging jig support rails B are embedded and fixed to the lower surface thereof. As shown in FIGS. 2 and 3, the hanging jig support rail B has a rail main body 1 having a downwardly widening groove a and an upper portion of the rail main body 1 at appropriate longitudinal intervals. It is composed of a plurality of fixing members 2 provided.

The rail main body 1 is manufactured by means such as roll forming of a steel plate and pultrusion of aluminum. The rail main body 1 includes a strip plate portion 1a and bent plate portions 1b bent downward from both side edges thereof. It is constituted by a narrow edge plate portion 1c which is bent from the lower end of the curved plate portion 1b to the opposite side.
The fixing member 2 is also manufactured by the same means, and is composed of a horizontal plate portion 2a in which locking portions 3 are bent and formed on both side edges, and a rising plate portion 2b which rises vertically from a central portion of its upper surface. And is engaged with the rail main body 1 via the locking portion 3 and until it is embedded in the precast plate A,
The fixing member 2 can be slid in the longitudinal direction of the rail body 1. Reference numeral 4 is a through hole for strengthening the fixing force to the concrete 5.

Using the precast plate A described above, FIG.
After the floor slab S is constructed, the hanging jig b is mounted in the groove a of the hanging jig support rail B, and the clamp metal fitting c, the binding wire d, the hanging bolt e, etc. attached to the hanging jig b as shown in FIG. It is possible to suspend and support the equipment pipe f such as the electric wire pipe, the ventilation duct, the air conditioning duct, the smoke exhaust duct, and the ceiling member g via the.

The hanging jig b shown in the figure is a type in which a clamp metal piece c is bolted as shown in FIG. 5, a binding wire d is connected as shown in FIG. 6, and a hanging bolt e is shown in FIG. A plurality of types are prepared according to the type of member to be suspended and supported, such as a type in which the upper end is screwed in. In any type, the substrate 6a and the both sides thereof are bent and continuously provided. Has locking plate portions 6b, 6b,
As shown in (a) and (b) of FIG.
It is configured to be switchable between a state in which the groove a is engaged (a state in which the locking plate portions 6b and 6b are locked to both side edges of the groove a) and a state in which the engagement is disengaged by rotating it by 0 degree. There is.

As shown in FIGS. 5 to 7, a stopper 6d, which is arch-shaped and has a V-shaped notch 6c in the center, is bent at one side edge of the substrate 6a of the hanging jig b. It is lined up. Then, as shown in (a) and (b) of FIG. 9, in a state in which the locking plate portions 6b and 6b are locked to both side edges of the groove a, a V-shaped cut 6c is formed by a minus driver 7. By pushing up, the stopper 6d is plastically deformed, and both end surfaces 6e, 6e of the stopper 6d are pressed against the opening end surfaces s, s of the groove a of the hanging jig support rail B,
The hanging jig b is configured to be prevented from rotating and freely sliding.

The arrangement pattern of the plurality of hanging jig support rails B to be embedded and fixed in the lower surface of the precast plate A can be arbitrarily set as illustrated in FIGS. 10 (A) to 10 (C).

FIG. 11 shows another example of the hanging jig support rail B. The rail A is characterized in that the rising plate portion 2b is inclined at an appropriate angle (about 45 degrees) with respect to the vertical line to strengthen the anchoring force for concrete. All of the rising plate portions 2b of the fixing member 2 provided at intervals in the rail longitudinal direction may be inclined in the same direction, but if they are arranged so as to be alternately inclined in the opposite direction, the pull-out resistance will be further increased. Will increase.

The hanging jig support rail B shown in FIG. 12 is characterized in that the inclined rising plate portion 2b is formed wider toward the upper side to enhance the fixing force to concrete.

The hanging jig support rail B shown in FIG. 13 is characterized in that the rising plate portion 2b of the fixing member 2 is formed in a downward U-shaped cross section. It should be noted that the through hole 4 as in the embodiment shown in FIG. 3 may be added to the rising plate portion 2b of the hanging jig support rail B shown in FIGS.

The hanging jig support rail B shown in FIG. 14 has a horizontal plate portion 2a in which the fixing member 2 is fixed to the upper surface of the strip plate portion 1a of the rail body 1 with rivets 8 and a rising plate that is diagonally raised from both ends thereof. It is characterized in that it is configured by the portion 2b. Although the through hole 4 is formed in the rising plate portion 2b, the through hole 4 may be omitted.

In the hanging jig support rail B shown in FIG. 15, the fixing member 2 itself is formed into a rivet shape, and the tip end of the fixing member 2 is inserted into a through hole formed in the band plate portion 1a of the rail body 1. It is characterized in that the protruding tip portion is crushed and fixed by hitting or the like.

A suspension jig supporting rail B shown in FIG. 16 includes a rail main body 1, a strip plate portion 1a, bent plate portions 1b bent downward from both side edges thereof, and bent plate portions 1b. It is composed of a narrow edge plate portion 1c bent from the lower end to the opposite side, and a flat plate portion 1d bent continuously from the edge plate portion 1c to the outside of the groove a, and each flat plate portion 1d has a predetermined shape. The fixing member 2 is characterized in that cuts 9a and 9b are formed at intervals and the flat plate portion between the cuts 9a and 9b is bent upward to form the fixing member 2.

FIG. 17 shows an embodiment of the second invention. This embodiment is characterized in that the above-mentioned hanging jig support rail B is embedded and fixed on the lower surface of the half precast plate A'for floor slab. In the figure, 10 is a three-dimensional truss-shaped anchoring bar to be integrated with the cast-in-place concrete that is placed on the upper surface of the half precast plate A ', and the lower end side is inside the concrete 5 of the half precast plate A'. It is buried. The other structure is the same as that of the first invention, and thus the description thereof is omitted. In each of the above embodiments, the rail main body 1 and the hanging jig b are made of metal, but they may be made of a resin material such as hard vinyl chloride.

[0021]

When a floor slab is constructed by using the precast plate or the half precast plate of the present invention, the ceiling equipment piping or the ceiling jig of the ceiling member can be inserted into the groove of the hanging jig supporting rail. In the state of being supported by both edges of the groove,
Since the position of the hanging jig can be changed by sliding the hanging jig along the hanging jig support rail, the hanging jig support rail can be used even in a building with various floor plans such as an apartment house. Since it is not necessary to change the burying position of each floor plan, the cost can be reduced by mass production of precast products, and the position of the hanging jig can be changed, so it is easy to change the floor plan just before construction. There are effects such as being able to.

[Brief description of drawings]

FIG. 1 is a perspective view of a precast plate showing an embodiment of the first invention.

FIG. 2 is a vertical sectional view of a main part.

FIG. 3 is a perspective view of a hanging jig support rail.

FIG. 4 is a perspective view showing a state in which equipment piping and a ceiling member are suspended and supported on a suspension jig support rail via a suspension jig.

FIG. 5 is a perspective view of a hanging jig.

FIG. 6 is a perspective view of a hanging jig.

FIG. 7 is a perspective view of a hanging jig.

FIG. 8 is an explanatory diagram of a method for attaching a hanging jig.

FIG. 9 is an explanatory diagram of a method of fixing a hanging jig.

FIG. 10 is a schematic bottom view of a precast plate for explaining an arrangement pattern of hanging jig support rails.

FIG. 11 is a perspective view of a hanging jig support rail.

FIG. 12 is a perspective view of a hanging jig support rail.

FIG. 13 is a perspective view of a hanging jig support rail.

FIG. 14 is a vertical cross-sectional view of a hanging jig support rail.

FIG. 15 is a vertical cross-sectional view of a hanging jig support rail.

FIG. 16 is a perspective view of a hanging jig support rail.

FIG. 17 is a perspective view of a half precast plate showing an embodiment of the second invention.

[Explanation of symbols]

A ... Precast version, A '... Half precast version, B
… Suspension jig support rails, a… Grooves.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiha Koga 250 Shimizu, Noda, Chiba Prefecture (72) Inventor Mitsuo Kimura 4-9-11-212 Takaido Higashi, Suginami-ku, Tokyo

Claims (2)

[Claims] 1. A precast plate for a floor slab, comprising:
A precast plate for a floor slab, in which a hanging jig support rail having a downwardly opening groove that widens in a downward direction is embedded and fixed. 2. A half precast plate for a floor slab, characterized in that a hanging jig support rail having a downwardly-opening deep groove is embedded and fixed on the lower surface thereof. Half precast version.