JPH0261244A - floorboard - Google Patents

Abstract

PURPOSE:To permit floor panels to be clamped with bolts from above when fixing floor panels to floor beams by a method in which the four corners of a panel are notched in such a way that the ends with bolt holes of a fitting plate are exposed by the notches. CONSTITUTION:Fitting plates 4, 4 with bolt holes 41 are set on the flat edges 2 of both ends in the longitudinal direction of a panel 1, and four corners of the panel 1 are notched 11 in such a way that the ends 42... of the plates 4, 4 with the holes 41 are exposed by the notches 11. The plates 4 set on the flat edges 2 of the floor panel a re placed on a floor beam 7 and the bolt holes 41 in the ends 42 of the plates 4 are fitted into the bolt holes of the beam 7. Bolt 8 is thrust through the bolt hole of the beam from the hole 7 and the plate A is fixed to the beam 7 with nuts 9. The clamping operation of bolts can thus be made from above and operations can be simplified.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to concrete floor plates for buildings.

(Prior Art) Conventional concrete floor boards include those that are cast on-site and those that are pre-fabricated in a factory and have a uniform thickness throughout.

(Problem to be solved by the invention) In the case of a large building, there is no problem even if the floorboards are formed by casting on site. However, in the case of small buildings, it was inefficient and uneconomical.

Therefore, concrete floor plates mass-produced in factories have come to be used frequently. However, in the case of this conventional floor slab, there was a problem in fixing it to the floor beam. In most cases, the bolts were tightened from below, which was not very efficient. Further, when insert nuts and the like are provided inside the panel body, it is necessary to take troublesome steps such as making sure that concrete does not get into the insert nuts when manufacturing the floorboard.

(Means for Solving the Problems) The floorboard of the present invention is formed of a rectangular panel made of concrete, and the center of the lower surface of this panel body, excluding the peripheral plane part, protrudes downward, and the panel body has a longitudinal direction. Mounting plates each having a plurality of bolt holes formed in the flat peripheral edge at both ends of the panel are arranged, and both ends of a mesh slope made of reinforcing reinforcing bars arranged inside the panel body are connected to these mounting plates, and the panel The four corners of the main body are cut out, and the ends of the mounting plates where the bolt holes are formed are exposed through the cutouts.

(Function) The four corners of the panel body are cut out, and the ends that form the bolt holes of the mounting plate are exposed through these cutouts, so when fixing the floorboard to the floor beam, bolting can be done from above. can.

(Example) The drawings show an embodiment of the floor slab of the present invention.

The floorboard A of the present invention is formed of a rectangular panel made of concrete, and the panel main body 1 has a lower center projecting downward (the projecting part is indicated by reference numeral 3), excluding the peripheral plane part 2.

Attachment plates 4° 4 having bolt holes 41 formed in the peripheral plane portions 2 at both ends of the panel body 1 in the longitudinal direction are disposed.

Both ends of a mesh slope 5 made of reinforcing reinforcing bars placed inside the panel body 1 are connected to a mounting plate 4.4.

Then, the four corners of the panel body 1 are cut out (the cutouts are indicated by reference numerals 11...), and these cutouts form the bolt holes 4.
1 are exposed. That is, when the panel body 1 is viewed from above, the ends 42 of the mounting plates 4, 4 are visible.

The mesh slope 5 is for reinforcing the panel body 1. The mesh slopes 5 shown in FIGS. 6 to 11 are arranged in two upper stages inside the panel body 1. The mounting plates 4, 4 are connected to both ends of a plurality of vertical reinforcing bars 51 of the lower mesh slope (tension side reinforcing bars) 5a. 52... A plurality of horizontal reinforcing bars that connect the vertical reinforcing bars 51... to form the mesh slope 5a. Vertical reinforcing bar 51
... reinforces the protrusion 3 which is the lower part of the panel main body 1, and is bent 53 upward near both ends and connected to the mounting plates 4, 4.

The upper mesh slope (compression side reinforcing bars) 5b is arranged at the upper part of the panel body 1. 54... vertical reinforcing bar, 55...
... is a horizontal reinforcing bar.

The upper mesh slope 5b and the lower mesh slope 5a are combined and fixed into two upper and lower stages with fine metal fittings 56... to form the mesh slope 5.
It consists of

The structure of the mesh slope 5 is not limited to that described here, and of course may have a membrane structure. Preferably, each reinforcing bar is irregularly shaped.

Bolt holes 41a are also formed in the mounting plate 4.4 in the portion that is in contact with the peripheral flat surface 2, and insert nuts (not shown) are inserted into the bolt holes 41a. It is a good idea to set this up.

The circumferential side of the panel body 1 gradually becomes wider as it goes downwards (
It is made with a Theba surface. By forming the tapered surface in this manner, a gap is created between the continuous floor +liA.

This gap is filled with cement mortar to join the floorboards A to each other.

Note that a notch recess (also referred to as a cotter) 6 is formed in the upper side of the panel body 1, and this notch recess 6 is filled with cement mortar to join the continuous floorboards A.

Next, the means for fixing the floor plate A formed as described above to the floor beam 7 will be explained.

The floor plate A has a mounting plate 4 disposed on the peripheral plane part 2 placed on the floor beam 7, and is formed at an end 42 of the mounting plate 4 (exposed when looking at the floor plate A from above). Bolt hole 4
1 to fit with bolt holes (not shown) formed in the floor beam 7. Connect the port 8 from the bolt hole 41 to the bolt hole of the floor beam 7.
is inserted, and the nuts 9 are tightened to fix the floor plate A to the floor beam 7 (see Fig. 5).

In addition, after laying and fixing a plurality of floorboards A on the floor beam 7 in this way, if the notches 11 of each floorboard A are filled with mortar, each floorboard A will be firmly connected. Become.

The bolt holes 41a formed in the portion of the mounting plate 4.4 that are in contact with the peripheral plane portion 2 are also adapted to the bolt holes (not shown) formed in the floor beam 7, and bolted. You can do without it.

(Effects of the Invention) The floor beam and the floor plate are fixed using bolt holes formed in the exposed mounting plate.

Therefore, bolt tightening work can be done from above,
Easy and easy to work with.

Furthermore, since the mounting plate is connected to the mesh slope, the strength is high.

Since the center of the lower surface of the panel body protrudes downward, a large distance can be maintained between the floor and the ceiling, and the strength of the floor slab is high.

[Brief explanation of the drawing]

The drawings show an embodiment of the floor slab of the present invention, and Fig. 1 is a plan view, Fig. 2 is a right side view, Fig. 3 is a front view, Fig. 4 is a bottom view, and Fig. 5 is a diagram showing the floor plate attached to the floor beam. 6 is an enlarged sectional view of the longitudinal end of the floor slab, FIG. 7 is an enlarged sectional view of the end of the floor slab in the width direction, and FIG. 8 is a plan view of the upper mesh slope.
FIG. 9 is a plan view of the lower mesh slope, FIG. 10 is a right side view of the mesh slope, and FIG. 11 is a front view of the mesh slope. 1...Panel body 3...Protrusion 41...Bolt hole 5...Mesh slope 8...Bolt 11...Notch 2...Peripheral plan view 4...Mounting plate 42 ...Mounting plate end 7...Floor beam 9...Nand A...Floor plate No. 5 Figure 6 Figure 7 Figure 6! :lZ! :13':)1 Sa♀mi

Claims (1)

[Claims] 1) It is formed of a rectangular concrete panel, and the center of the lower surface of this panel body, excluding the flat peripheral edge part, protrudes downward, and there are multiple bolt holes in the flat peripheral edge part at both ends of the panel body in the longitudinal direction. Each of the mounting plates formed with a A floorboard characterized in that an end portion of a mounting plate forming a bolt hole is exposed.