JPH026362A - How to manufacture composite floors - Google Patents

Abstract

PURPOSE:To obtain a composite bed of improved accuracy, with reduced labor for application along with decreased thickness by casting concrete on a vibration-damping steel plate having been provided, in advance, with a bonding means to concrete and by molding. CONSTITUTION:Firstly, a bonding means to concrete 9 is provided on the upper surface of a vibration-damping steel plate 1. The resulting steel plate 1 is set up, on which concrete 9 is cast to effect curing and forming, thus producing the objective composite bed. Alternatively, at a construction site, a mold 10 is mounted on temporary supports 12, and the above-mentioned vibration- damping steel plate 1 is set up on this mold 10 followed by casting concrete 9 to effect curing, after which the mold 10 is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a composite floor that integrates vibration-damping steel plates and concrete.

[Prior Art] As one method of reducing impact noise from heavy floors of buildings, etc., a structure in which a damping steel plate and a floor slab are combined has been proposed. The damping steel plate 1 is composed of two steel plates 2 as shown in FIG.
A viscoelastic body 3 with high vibration damping properties is interposed between the vibration damping steel plates 1 and floor slabs 4 in various combinations.
This is an attempt to bring out the effect of reducing the above-mentioned impact noise. Figures 8 to 10 are cross-sectional views showing examples of the structure. A structure in which a damping steel plate 1 is attached with an adhesive 5 and a chemical anchor 6, and FIG. 10 shows a structure in which concrete 9 is poured on the upper surface of a damping steel plate 8 shaped into a deck plate.

[Problem to be solved by the invention] By the way, the above-mentioned conventional vibration damping steel plate 1 and concrete slab 4
In the composite structure, the method of attaching the damping steel plate 1 to the upper or lower surface of the floor slab 4 includes: (1) The work of attaching the damping steel plate 1 to the hard floor slab 4 requires a lot of work.

(2) The vibration-damping steel plate 1 must be attached with high precision, but it is difficult to ensure precision due to problems such as unevenness on the upper surface of the slab 4 and workability.

■When adhering to the lower surface of the slab 4, the working posture is poor and chemical anchors 6 are also required, which worsens the construction conditions.

In addition, the method of using the damping steel plate 1 by forming it into the deck plate 8 has the following drawbacks: ■ The thickness of the deck plate 8, which is 50 to 75 mm, is added to the thickness of the slab, so the thickness of the composite floor is It tends to get bigger.

■In multifamily buildings where the lower surface of the floor on the upper floor often serves as the ceiling base for the lower floor, a ceiling base or ceiling board that covers the corrugated surface of the deck plate 8 is required, which increases cost and is effective. Ceiling height is also reduced.

Issues such as this arise.

The present invention was made in order to solve the above-mentioned problems of conventional equipment, and is a method for manufacturing a composite floor of a slab and vibration-damping steel plate that reduces construction work, has good accuracy, and can increase the effective ceiling height of a room. This is what we are trying to provide.

[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing a composite floor of a concrete slab and a vibration-damping steel plate according to the present invention includes a vibration-damping steel plate on the upper surface of which has been bonded to concrete concrete is placed on top of the concrete and molded.

Note that the damping steel plate may be used in place of the formwork if necessary.

[Function] A high-precision composite floor can be obtained because damping steel plates are placed in a highly precisely finished formwork and concrete is poured.

In addition, although it takes time and effort to place damping steel plates before pouring concrete, all that is left to do is pour concrete, compared to the conventional method of attaching damping steel plates to the concrete surface after hardening. The overall effort is reduced to +h.

Furthermore, by using flat vibration-damping steel plates instead of deck plates, the overall thickness of the composite floor can be reduced. Additionally, the damping steel plate on the bottom of the slab can be used as a ceiling base, making it possible to increase the ceiling height.

[Embodiments of the invention] 1 to 6 are cross-sectional views showing embodiments of the present invention.

The method shown in FIG.
A vibration-damping steel plate 1 to which an adhesive 5 has been applied and/or a fixing metal fitting 11 has been installed, or both, has been placed in a damping plate 0, and concrete 9 is placed on top of the damping steel plate 1, and after the concrete has hardened, it is removed from the formwork. .

Figure 2 shows the vibration damping 'M' on both sides of the vertically installed formwork 10.
A composite floor with damping steel plates 1 affixed to both sides can be manufactured by a method of manufacturing by arranging temporary 1 and pouring concrete 9.

FIG. 3 shows a manufacturing method in which damping steel plates 1 are arranged on a formwork 10 placed on a temporary support 12 and concrete 9 is poured in the case of on-site casting.

Moreover, what is shown in FIG. 4 is the formwork 10 in the above embodiment.
In this method, the damping steel plate 1 is directly placed on the temporary support 12 and the concrete 9 is poured.

Further, FIG. 5 shows an example in which, when the damping steel plate 1 is thin, a bent portion 13 is formed at the end for ease of handling. This also serves as a means of bonding the damping steel plate 1 and the concrete 9.

FIG. 6 shows a structure manufactured by attaching reinforcing bars 14 to the bent portion 13 of the damping steel plate 1 and pouring concrete 9 thereon. The adhesion between the damping steel plate 1 and the concrete 9 is further improved.

[Effects of the Invention] The present invention provides a method for manufacturing a composite floor of a concrete slab and a vibration-damping steel plate, in which a vibration-damping steel plate that has been bonded to concrete in advance is placed, and concrete is cast and formed on top of the vibration-damping steel plate. As a result, we were able to achieve the following excellent effects.

(1) The manufacturing precision of composite floors has been greatly improved.

(2) Construction time has been greatly reduced.

(3) Since the thickness of the entire composite floor can be reduced, the ceiling of the floor directly below can be raised.

(4) The bottom surface of the composite floor can be used as a ceiling base,
You can easily finish the ceiling on the floor directly below.

[Brief explanation of the drawing]

Figures 1 to 6 are cross-sectional views showing a method of manufacturing a composite floor according to an embodiment of the present invention. Figure 1 is a cross-sectional view of a composite floor with a damping steel plate attached to one side, and Figure 2 is a cross-sectional view of a composite floor with a damping steel plate attached to one side. Figure 3 is a cross-sectional view of a composite floor with damping steel plates attached to it, Figure 4 is a cross-sectional view of a composite floor cast on-site, and Figure 4 is a vibration-damping n! 4 is a cross-sectional view of a composite floor cast on-site using temporary molding as formwork, Figure 5 is a cross-sectional view of a composite floor using damping steel plates with bent ends, and Figure 6 is a cross-sectional view of a composite floor with damping steel plates with bent ends. Figure 7 is a cross-sectional view of a composite floor using damping steel plates and reinforcing bars, Figures 8 to 10 are cross-sectional views showing conventional manufacturing methods, and Figure 8 is a cross-sectional view of a damping steel plate. Figure 9 shows a composite floor with a damping steel plate attached to the bottom surface, and Figure 10 shows a composite floor with a damping steel plate as a deck plate. In the figure, 1 is a damping steel plate, 4 is a concrete slab, 5 is an adhesive, 9 is concrete, 10 is a formwork, 11 is an anchorage,
12 is a temporary support, 13 is a bent portion, and 14 is a reinforcing bar. Agent Patent Attorney Souji Sasaki Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] (1) A method for manufacturing a composite floor of a concrete slab and a vibration-damping steel plate, in which a vibration-damping steel plate, which has been bonded to concrete in advance, is placed on the upper surface, and concrete is placed on the vibration-damping steel plate. 1. A method for manufacturing a composite floor, characterized in that it is cast and hardened. (2) The method of manufacturing a composite floor of a concrete slab and a vibration-damping steel plate by casting it on-site is a vibration-damping method in which a method of adhering concrete to the top surface of the formwork is placed on a temporary support. 2. The method for manufacturing a composite floor according to claim 1, wherein steel plates are placed, concrete is poured on top of the steel plates, and the formwork is removed after the concrete has hardened. (3) The above method for manufacturing a composite floor of a concrete slab and a vibration-damping steel plate by precasting includes arranging a vibration-damping steel plate that has been bonded to concrete in advance on the top surface of a formwork for manufacturing the floor slab, The composite according to claim (1), characterized in that concrete is placed on the damping steel plate to a thickness equal to the full thickness or the lower half of the floor slab, and after hardening, the precast plate is removed from the formwork. Method of manufacturing floors. (4) In the method for producing a composite floor of a concrete slab and a damping steel plate by casting on site or precasting, the composite according to claim (1), characterized in that the damping steel plate is used in place of the formwork. Method of manufacturing floors. (5) The method for manufacturing a composite floor according to claim (1), characterized in that the ends of the damping steel plate used in the composite floor are bent. (6) The method for manufacturing a composite floor according to claim (1), wherein the means for adhering the damping steel plate to the concrete is application of an adhesive. (7) Manufacture of the composite floor according to claim (1), wherein the means for adhering the damping steel plate to the concrete is a fixing metal such as an anchor reinforcing bar, a stud bolt, a threaded rod, or a flat screw. Method. (8) The method of adhering the vibration-damping steel plate to the concrete is a combination of bending the end of the vibration-damping steel plate, applying adhesive, or fixing metal fittings. Method of manufacturing composite floors.