JPS6229575B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a floor structure having a connecting member capable of reducing floor vibration.

[Prior art and problems to be solved by the invention]

In conventional steel-framed buildings, when the span is relatively large, floor vibrations are likely to occur, and the damping of the floor vibrations may be slow. Particularly in the case of school buildings, the effects of floor vibrations are significant because students run and jump on the floors.

This invention was developed to solve the above-mentioned conventional problems, and aims to increase the rigidity of the floor, shorten the vibration period, and speed up the damping of vibrations.

〔Example〕

Steel columns 1 made of H-shaped steel are connected by girder direction girders 2 and inter-beam direction floor beams 3.

The girder 2 and the floor beam 3 can be made of H-beams or assembled beams using T-beams for the upper and lower chord members.

In the direction perpendicular to the floor beam 3, that is, in the girder direction, the floor beams 4 with small beams are connected to the floor beams 3 at the required intervals.
and the upper surfaces of the floor beams 4 are arranged so that they are at the same or approximately the same height. This floor beam 4 is made of channel steel.

A deck plate 5 is arranged on the above-mentioned girder 2, floor beam 3, and floor beam 4, and concrete 6 is placed on the deck plate 5.

Furthermore, in parallel with the floor beam 4, a connecting member 7 made of round steel or steel cable is provided diagonally between the floor beams 3, 3.

FIGS. 2 and 3 show the basic form of this invention, in which the connecting members 7 are usually arranged in an X shape, and the connecting members 7 are arranged astride between the adjacent floor beams 3. , tensioned by one turnbuckle 8. And in order to prevent twisting in the floor beam 3,
As shown in FIGS. 4 to 6, a receiving piece 9 having a smooth surface is provided projecting from the lower surface of the lower chord member of the floor beam 3. Reference numeral 10 indicates stoppers provided on both sides of the receiving piece 9.

Further, the connecting member 7 may be provided at one location between the centers of the floor beams 3, or generally, a plurality of connecting members 7 may be provided near the center in the direction between the beams.

As shown in FIGS. 7 and 8, the connecting member 7 may be added to extend between the bottom chords of adjacent floor beams 3. The connecting members 7 may be arranged in a zigzag pattern as shown in FIG. 9, or may be arranged in an X-shape every other space between the floor beams 3 as shown in FIG. 10.

Note that both ends of the connecting member 7 are shown in FIGS. 1, 9, and 10.
It is attached to the upper chord of the floor beam 3 as shown in the figure, but it can be attached using the mounting bolts used when attaching the floor beam 4 to the floor beam 3 as shown in Figures 2 and 7. However, it suffices as long as it is near the upper chord part of the floor beam 3.

〔Effect of the invention〕

This invention has the above-mentioned configuration, and by adding a connecting member in addition to the floor beams and floor sub-beams, the rigidity of the floor beams themselves is increased, and in particular, since the floor beams interfere with each other, vibration damping is reduced. The vibration period is significantly shortened and the vibration properties are improved.

Furthermore, since the connecting members are round steel or steel cables, it is easy to install and adjust the tension.Furthermore, the lower surface of the lower chord of the floor joist has a smooth surface, so even if the connecting members are tensioned, the floor joist will not twist. Does not occur.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an overview of the invention, Figure 2 is a perspective view showing an overview of the invention;
Figures 4 and 3 are longitudinal sectional views, Figure 4 A, B, and 5.
Figures 6A and 6B are detailed views of the connecting piece,
FIGS. 7 and 8 are longitudinal sectional views of other embodiments, and FIG.
10 are perspective views showing the arrangement of the connecting members. 1...Steel column, 2...Girder, 3...Floor beam, 4...
...Floor beam, 5...Deck plate, 6...Concrete, 7...Connecting material, 8...Turnbuckle,
9... Ukegata, 10... Stopper.

Claims (1)

[Claims] 1 Between the floor beams 3 in the beam-to-beam direction, a floor beam 4 with a small beam size perpendicular to the floor beam 3 is arranged so that the upper surfaces of the floor beam 3 and the floor beam 4 are at the same or approximately the same height, and To reduce vibrations, a connecting member made of round steel or steel cable is provided parallel to the beams 4 and slidable on the bottom surface of the lower chord of the floor beams 3 in an X-shape between the floor beams 3. Flexible floor structure.