JPH048166Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to an upper floor of a building that has a large earthquake-proofing effect.

(Prior Art and Problems) The upper floor of a building is usually constructed by placing flooring material on top of joists installed between beams. Because the joists are installed in the short side direction of the floor span, the rigidity in the long side direction is lower than that in the short side direction, and the imbalance between the two prevents the upper floors from fully demonstrating their seismic performance. For this reason, the so-called seismic floor structure (1986-
28736) is proposed.

However, these earthquake-proof floor structures require increasing the effective cross section of the joists or increasing the thickness of the facing material, which is not a good idea from a cost standpoint. Furthermore, seismic insulation materials are attached to the underside of the floor joists, but this poses problems in terms of cost and construction work, such as the seismic insulation material itself getting in the way of installation work when ceiling materials are installed on the underside of floors above and below floors.

(Means for solving the problem) In order to solve the above problem, the present invention is characterized by interposing a stiffening plate between adjacent joists in a state that is perpendicular to the joists. Earthquake prevention effects are effectively demonstrated.

Also, since the stiffening plate does not protrude from the lower surface of the joist, it is possible to easily construct the interior of the ceiling.

(Example) The earthquake-proof upper floor of the present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a schematic side view illustrating the upper floor 1. FIG. The upper floor 1 has joists 2, 2 in the direction of the short side between the walls of the building.
... are constructed at predetermined intervals, and a floor material 3 is stretched over the top surface. Normally joists 2, 2... are approximately 90cm
They are arranged at intervals and are constructed approximately perpendicular to the long side direction of the floor span. The floor material 3 is made of plywood, particle board, etc. of a regular length, and tatami mats, carpets, etc. are usually laid on top of it.

In such an upper floor 1, adjacent joists 2, 2
...Insert the stiffening plates 4, 4... between them. Therefore, the stiffening plates 4, 4, . . . are installed vertically so as to be orthogonal to the side surfaces of the adjacent joists 2, 2 and the lower surface of the floor material 3, respectively.

The stiffening plates 4, 4... are formed to be approximately equal to the height of the joists 2, 2..., and in the interposed state, they are housed in the space formed by the joists 2, 2... and the floor material 3, so the height of the joists 2, 2... 2, 2... does not protrude from the bottom surface.

Figure 2 shows the stiffening plate 4 interposed between the joists 2, 2...
4 is a partially omitted perspective view for explaining in more detail. In other words, the stiffening plates 4, 4... interposed between the joists 2, 2... are brought into close contact with both end surfaces of the joists 2, 2... and the side surfaces of the joists 2, 2..., and their upper surfaces and the lower surface of the flooring material 3, so that the nails N, N It is joined by using a combination of and adhesive. Therefore, the stiffening plates 4, 4... are joined in a state in which both end faces, the side surfaces of the joists 2, 2..., and the top face and the floor material 3 are in close contact with each other, so that the three sides excluding the bottom face have an integral joint structure with the upper floor 1. becomes.

In addition, stiffening plates 4, 4, which are interposed between adjacent joists...
are installed alternately out of phase. This ensures uniform rigidity over the entire surface of the upper floor and provides the expected seismic insulation effect.

Figure 3 shows the stiffening plates 4, 4... for all the joists 2, 2.
... is a side view of the state in which it is interposed between the two.

In this case, in order to extend the ceiling material (not shown) on the underside of the upper floor 1, hangers 5, 5, etc. are directly attached to the predetermined joists 2, 2, and the lower ends of the hangers 5 are attached to the ceiling (not shown). (not shown) and attach ceiling material to the edge of the field.

On the other hand, if it is not possible to attach the hanging tree 5 directly to the joists 2, 2..., install a hanging beam 6 between the walls as shown in Fig. 4, attach the hanging tree 5 to this hanging beam 6, and do the same as above. Install the veranda and ceiling material. In this case, the stiffening plate 4 cannot be interposed between the joists 2, 2.... However, since the suspension beams 6, 6... are installed at a much larger interval than the pitch of the joists 2, 2..., even if there are parts where the stiffening plates 4, 4... are not interposed, the seismic insulation effect of the entire upper floor 1 is not significantly affected. No impact.

In the above explanation, the case was explained in which the joists 2, 2... were erected on site and the flooring material 3 was stretched on top of the joists, but the present invention is not necessarily limited to this upper floor. It may be a so-called floor panel in which the joists 2, 2... are placed in parallel in advance and the floor material 3 is stretched over the upper surface thereof. In this case, the stiffening plates 4, 4, . . . can be interposed in advance in the floor panel manufacturing process.

(Effects) As explained above, the earthquake-proof upper floor of the present invention has
Even if the joists are installed in the short side direction, by increasing the rigidity of the upper floor in the long side direction, the seismic insulation effect of the entire upper floor can be enhanced.

Moreover, since the stiffening plate itself is interposed within the space formed by the joist and floor material, it does not protrude to the lower surface of the upper floor, making it easier to construct ceiling materials and other features.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing the state in which the stiffening plate is installed on the upper floor, Fig. 2 is a partially omitted perspective view illustrating the state in which the stiffening plate is installed, and Fig. 3 is a schematic side view showing the state in which the stiffening plate is installed on the upper floor. FIG. 4 is a schematic side view illustrating a state in which stiffening plates are attached between the joists, and FIG. 4 is a schematic side view showing a state in which some stiffening plates are omitted. 1... Upper floor, 2, 2... Joist, 3... Floor material, 4, 4... Stiffening board.

Claims (1)

[Scope of Claim for Utility Model Registration] An upper floor in which a plurality of joists are arranged substantially perpendicular to the longitudinal direction of the floor span and at predetermined intervals, and flooring material is stretched over the joists. A stiffening plate having a height substantially equal to the height of the joist is installed between the joists, and is perpendicular to the joists and perpendicular to the lower surface of the flooring material, and is connected to the stiffening plate between adjacent joists. is an earthquake-proof upper floor that is characterized by being interposed with alternating phases.