JP2001182211A - Floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor structure capable of effectively reducing floor shock noise and the like, facilitating construction, and lowering a cost. SOLUTION: A steel joist 2 serving as a floor material is arranged on a floor beam 1 via an elastic body 5, while the steel joist 2 and the floor beam 1 are clamped by means of a metal fitting 4 to be connected together, and elastic bodies 6, 7 are arranged between the metal fitting 4 and the steel joist 2 and/or between the metal fitting 4 and the floor beam 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a floor structure.

[0002]

2. Description of the Related Art In a building such as a house, for example, a wooden joist is installed on a floor beam made of H-section steel or the like so as to be orthogonal thereto, as a structure of an upper floor such as a second floor. There is a structure in which a floor plate is installed on the floor. And, in order to prevent the floor impact sound on the upper floor from being transmitted to the lower floor,
In some cases, an asphalt-based damping mat (specific gravity: about 2.4 to 3.2; thickness: about 4 to 12 mm) containing iron oxide powder is placed on the upper surface of the base floor board over the entire floor.

[0003]

However, the above-mentioned damping mat itself has a problem that it is difficult to handle because it is heavy and soft, and it takes time and effort for construction. Further, in some cases, it is necessary to increase the weight of the floor and to consider the influence on the structural design. Furthermore, the damping mat itself is not only an expensive material, but also has a problem that the cost is extremely high because the mat is laid on the entire floor. In addition, when the above damping mat is laid without using an adhesive or the like, it may cause walking vibration disturbance, and does not contribute much to the reduction of vibration in a low frequency range of the floor, and However, there is also a problem in that it tends to be affected by temperature, and a sufficient damping effect cannot be obtained when the temperature becomes cold.

The present invention has been made in view of the above-mentioned conventional problems, and has a floor structure capable of effectively reducing floor impact noise and the like, and which can be easily constructed and whose cost can be reduced. The task is to provide.

[0005]

SUMMARY OF THE INVENTION The above object is achieved by providing a floor material on a floor beam via an elastic body, sandwiching the floor material and the floor beam with metal, and connecting the floor material with the metal. The problem is solved by a floor structure in which an elastic body is interposed between a floor material and / or between a hardware and a floor beam.

[0006] In this floor structure, since the floor material is installed on the floor beam via the elastic body, it is possible to prevent the vibration of the floor material from propagating to the floor beam side. In addition, since the elastic body is interposed between the hardware and the floor material and / or between the hardware and the floor beam, vibration of the floor material is generated by the floor material through the hardware connecting the floor material and the floor beam. Propagation to the beam side can also be prevented. Therefore, floor impact noise can be effectively reduced, and propagation of other solid sounds can also be effectively prevented.

In addition, since the floor material and the floor beam are joined by metal, and as described above, the structure in which the vibration of the floor material is prevented from propagating to the floor beam by an elastic body is employed. The vibration propagation to the floor beam side can be prevented without laying down such a vibration damping mat, and there is no occurrence of a walking vibration obstacle.

[0008] In addition, since only an elastic body is interposed between the floor beam and the floor material and between the hardware and the floor material and / or between the hardware and the floor beam, the use of the elastic body is not required. The amount may be small, the elastic body is easy to handle, the construction can be performed easily, and the cost can be kept low. Further, since the amount of the elastic body used is so small, the use of the elastic body does not increase the weight of the floor, and it is not necessary to consider the influence on the structural design.

As the elastic body, for example, a rubber material is preferably used.

[0010] In the above floor structure, when the floor material is installed on three or more floor beams spaced apart from each other by a continuous span method, the floor is integrated in a planar manner. The vibration of the floor is suppressed, and it is possible to more effectively prevent obstacles such as walking vibration of the floor.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

In the floor structure of the first embodiment shown in FIG. 1, 1 and 1 are floor beams, 2 is a joist as a floor material, 3 is a floor plate,
Reference numeral 4 denotes a metal member, and reference numerals 5, 6, and 7 denote elastic bodies.

The floor beam 1 is made of H-section steel having upper and lower flanges and a web connecting these flanges.
Consists of square pipe-shaped steel joists.

The floor panel 3 has a configuration in which a finishing panel 10 is disposed on a base panel 8 via a discard panel 9.
The floor plate 3 is installed on the upper surface of the steel joist 2 as a floor material, and is integrated with the steel joist 2 so that the vibration of the floor plate 3 is controlled by the steel joist 2.

The steel joists 2 are oriented in a direction perpendicular to the floor beams 1, and the lower surfaces at both ends thereof are interposed between the adjacent floor beams 1, 1 via an elastic body 5. 1 is installed so as to be supported on the upper surface of the upper flange 1a. The elastic body 5 is made of a viscoelastic rubber material having high damping performance.

The steel joist 2 and the floor beam 1 are connected to the through holes vertically penetrated at both ends of the steel joist 2 by metal fittings 4.
Through the upper metal washer 4a and the lower hook 4
b, the washer 4a and the hook 4b are relatively close to each other by the screw mechanism of the metal fitting 4 so as to sandwich the steel joist 2 and the upper flange 1a from above and below, and are joined together. And between the washer 4a and the steel joist 2, and
Elastic bodies 6 and 7 are interposed between the hook 4b and the upper flange 1a of the floor beam 1, respectively. These elastic bodies 6 and 7 are also made of a viscoelastic rubber material having high damping performance.

Each of the elastic members 5, 6, and 7 is compressed and deformed to some extent in the vertical direction by fastening the steel joist 2 and the upper flange 1a of the floor beam 1 with the metal member 4.

In the above floor structure, since the joist 2 is made of steel joist, and the steel joist 2 and the floor plate 3 are integrated, the vibration of the floor is controlled by the joist 2 and the steel joist. The joist 2 is installed on the floor beam 1 via the elastic body 5, and the steel joist 2 and the floor beam 1 are sandwiched and integrated with the metal piece 4. Since the elastic members 6 and 7 are interposed between the steel joist 2 and the hook 4b of the hardware 4 and the upper flange 1a of the floor beam 1, respectively, the vibration of the steel joist 2 causes the floor to vibrate. Propagation to the beam 1 side can be effectively prevented by these elastic bodies 5, 6, and 7, the floor impact sound can be effectively reduced, and the propagation of other solid sounds is also effective. Can be prevented. Also, as in the case of conventional damping mats, when it gets cold, the floor impact noise does not increase,
Vibrations in the low frequency range can also be reduced.

FIG. 4 shows the measurement results of the heavy floor impact sound performed on the ordinary floor structure of the conventional wooden joist and the floor structure of the present embodiment. According to the floor structure of the present invention, FIG. It can be seen that floor impact noise can be effectively reduced.

As described above, between the washer 4a of the hardware 4 and the steel joist 2 and between the hook 4b of the hardware 4 and the floor beam 1
The effect is high when the elastic bodies 6 and 7 are interposed between the upper flange 1a and the upper flange 1a, but the elastic body may be interposed only between the washer 4a and the steel joist 2 or the hook 4b.
An elastic body may be interposed only between the upper flange 1a and the upper flange 1a. These also prevent the vibration of the steel joist 2 from being transmitted to the floor beam 1 through the metal fittings 4. In particular, when the elastic body 6 is interposed between the washer 4 a and the steel joist 2, it is possible to prevent the vibration of the steel joist 2 from being transmitted to the hardware 4.

Moreover, the elastic members 5 are made of steel joists 2 and floor beams 1.
It is only necessary to intervene locally only at the portion supported by
Since the elastic bodies 6, 7 need only be interposed only in the portion of the above, the amount of the elastic bodies 5, 6, 7 used may be small, the handling thereof is easy, and the construction can be easily performed.
Cost can also be kept low.

Further, since the amount of the elastic bodies 5, 6, 7 used is small, the weight of the floor does not increase as in the case of laying a damping mat. There is no need to consider design impacts. Not only that, since the elastic members 5, 6, and 7 have been compressed and deformed to some extent in advance by tightening the metal members 4 as described above, even if a load such as furniture is applied to the floor plate 3 later. Also, there is no possibility that the floor plate 3 is largely displaced downward by the loaded load. In addition, since the floor plate 3 and the steel joist 2 are integrated, and the steel joist 2 and the floor beam 1 are also connected by the hardware 4, the walking vibration disturbance of the floor can be suppressed.

In the floor structure of the second embodiment shown in FIG. 2, the lower side wall 2a made of a tubular steel joist 2 such as a square pipe and the upper flange 1a of the floor beam 1 are combined with the above case. Are connected by being sandwiched between metal members 4 having different constitutions. An elastic body 5 is interposed between the steel joist 2 and the upper flange 1a, and a lower side wall 2a of the steel joist;
An elastic member 6 is interposed between the washer 4a of the metal member 4 for holding the side wall 2a from above, and an upper flange 1a of the floor beam 1 and a metal member 4 for holding the upper flange 1a from below.
An elastic body 7 is interposed between the plate 4c and the steel 4 and an elastic body 11 is interposed between the plate 4c and the steel joist 2 as a spacer.

In this floor structure, even if the steel joist 2 and the floor beam 1 are firmly fastened with the hardware 4, the steel joist 2 is not deformed in the vertical direction, and the steel joist 2 and the floor beam 1 are not deformed.
Can be firmly connected with the metal member 4.

In the floor structure according to the third embodiment shown in FIG. 3, the steel joist 2 is designed to be longer than the above case, and three places, that is, both ends and an intermediate portion in the longitudinal direction, have three floors. Beam 1,
It is supported by 1,1. That is, this is a case where the steel joist 2 as the floor material is installed on the floor beam 1 by the continuous span method. It goes without saying that the steel joist may be supported on the floor beam at four or more locations in the longitudinal direction. And elastic body 5 is interposed between steel joist 2 and floor beam 1 similarly to each above-mentioned embodiment, and also in the part which connects steel joist 2 and floor beam 1 with hardware 4. Elastic bodies 6 and 7 are interposed. According to this structure, the floor is integrated in a planar manner by the steel joists 2, the vibration of the floor can be suppressed, and the obstacle of walking vibration of the floor can be more effectively prevented.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the floor material joined to the floor beam by metal is a joist, but in addition, a floor panel such as an ALC plate is used as the floor material, and this is used for the floor beam without the joist. It may be applied to floor structures that are joined by hardware. In that case, a floor panel such as an ALC plate is installed on the floor beam via an elastic body, and the floor panel and the floor beam are sandwiched and joined by metal, and the floor panel and the floor panel are interposed between the metal and the floor panel. And / or a floor structure in which an elastic body is interposed between the hardware and the floor beam. Also,
It is also possible to adopt a configuration in which three or more floor panels are installed on floor beams in a continuous span system. Also, as flooring,
A floor panel referred to in the present invention may be a floor panel obtained by integrally combining a floor panel and a joist in advance.

Further, in the floor structure using the joists as the floor material as described above, by using steel joists, the advantage that the rigidity of the floor can be increased can be obtained. The material is not limited to steel and may be wooden. In addition, various types of hardware that sandwich the floor material and the floor beam and combine them may be used. Further, as for the elastic body, it is preferable to use an elastic body having a high damping performance capable of attenuating the vibration at an early stage. However, it is not always necessary to use such an elastic body. Any material having elasticity may be used. Further, the physical property values such as the elastic coefficient and the loss coefficient of each elastic body to be used may be unified or may be different. If they are made different from each other, a simple vibration characteristic is not obtained, so that a resonance phenomenon or the like can be reduced.

[0028]

As described above, since the floor structure of the present invention is as described above, floor impact noise and the like can be effectively reduced, and the construction is easy and the cost is low. Can be suppressed.

[Brief description of the drawings]

FIG. 1 shows a first embodiment, in which FIG. 1A is a cross-sectional side view, and FIG. 1B is an enlarged view of a main part.

FIG. 2 shows a second embodiment, in which FIG. 1A is a cross-sectional side view and FIG. 2B is an enlarged view of a main part.

FIG. 3 is a sectional side view showing a third embodiment.

FIG. 4 is a graph showing the results of a performance comparison test of heavy floor impact sound.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Floor beam 2 ... Steel joist (floor material) 4 ... Hardware 5, 6, 7 ... Elastic body

Claims (2)

[Claims] 1. A floor material is installed on a floor beam via an elastic body, and the floor material and the floor beam are sandwiched and joined by metal, and between the metal and the floor material and / or metal. An elastic body is interposed between the floor beam and the floor beam. 2. The floor structure according to claim 1, wherein the flooring material is installed on three or more floor beams spaced from each other by a continuous span method.