JPS6310021Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to improvements in flat deck plates used in the construction of reinforced concrete deck slabs, and particularly to improvements in connection parts.

Traditionally, to construct reinforced concrete slabs,
The method used was to combine formwork to partition the space that forms the floor slab, place reinforcing bars in this space, pour concrete, and then remove the formwork after the concrete hardens. It requires a lot of labor, such as assembling, removing, transporting, and organizing a large number of materials such as formwork and supports, and applying release agent to the formwork surface.
The drawback is that construction costs are extremely high, so the so-called waste formwork method, in which the formwork is buried integrally in concrete without removing it, is currently popular.

The waste form frame method is a method in which deck plates are overlapped and mounted on the top surface of the steel beam, but in this method, the top surface of the deck plate cannot be set on the same plane as the top surface of the steel beam, so the steel beam The distance from the top of the concrete to the top of the concrete is long, and a large amount of concrete and finishing materials are consumed.

For this reason, a flat deck plate disclosed in Japanese Utility Model Application Publication No. 56-41012 has recently been developed and used. As shown in FIG. 1, a plurality of reinforcing ribs 2 having a hollow triangular cross section are bent in parallel at regular intervals on the lower surface side of a horizontal plate 1, and a connecting piece 3 is formed at one end parallel to the reinforcing ribs 2. FIG. 2 shows a flat deck plate 5 formed by folding down the reinforcing ribs 2 and crushing both ends of the reinforcing ribs 2 to form planar mounting pieces 4 at both ends of the plate 1 perpendicular to the reinforcing ribs 2. The top surface of the flat deck plate 5 and the top surface of the steel beam 6 are set to be approximately on the same plane, and the distance from the top surface of the steel beam 6 to the top of the concrete is This saves on concrete and finishing materials, and also eliminates the need to close the ends of the reinforcing ribs.

By the way, the flat deck plate 5 is
To connect the steel beams 6 on both sides, the connecting piece 3 at one end is press-fitted into the reinforcing rib 2 at the other end of the adjacent flat deck plate 5, as shown in FIG. There is. In addition, as shown in FIG. 4, in the case of a flat deck plate 5' having two L-shaped reinforcing ribs 2' folded over, the connecting piece 3 at one end is connected to the other side of the adjacent flat deck plate 5'. It is press-fitted into two reinforcing ribs 2' at the end.

In order to connect the flat deck plates 5, 5' in this manner, the means for press-fitting and clamping the connecting piece 3 at one end onto the reinforcing ribs 2, 2' at the other end is carried out during concrete pouring. Since the connecting piece 3 tends to float up and therefore easily comes off, it must be fixed by welding or the like.

For this purpose, as shown in FIG. 5, a locking piece 7 with an upward opening and a flat hook-shaped cross section is provided at one end of the flat deck plate 5'', and a locking piece 7 with a flat hook-shaped cross-section and a downward opening is provided at the other end. 7' is provided, and the connection between adjacent flat deck plates 5'' is achieved by engaging the locking pieces 7 and 7'.

This connection of the flat deck plate 5'' does not cause the locking piece 7' to come off due to lifting.
If the locking pieces 7, 7' are deformed, it is difficult to connect them. When making a connection, the locking piece 7' cannot be dropped from above and engaged with the locking piece 7, so the flat deck plate 5 is connected using the flat deck plate 5'' mounted between the steel beams 6 as a foothold. ” must be engaged while sliding sideways by pulling or pushing. Therefore, the workability is extremely poor.

This idea was created in view of these circumstances,
A flat deck plate that can be attached to one end of an adjacent flat deck plate by dropping the other end of the adjacent flat deck plate from above, and also prevents the other end from lifting up and coming off. We aim to provide the following.

An embodiment of the flat deck plate according to the present invention will be described below with reference to FIG. 6. On the lower surface of the horizontal plate 1, there are a plurality of reinforcing ribs 2, in this example three reinforcing ribs 2 having a hollow triangular cross section, arranged at regular intervals. The reinforcing ribs 2 are bent in parallel, and both ends of the reinforcing ribs 2 are crushed to form planar mounting pieces 4 at both ends of the plate 1 perpendicular to the reinforcing ribs 2. Note that the reinforcing ribs are not limited to hollow triangular cross sections, but can also be L-shaped or inverted T-shaped.
It may be a shape, etc.

A joint 9 connected to one end of the plate 1 parallel to the reinforcing rib 2 (the right end in the figure) and having a V-shaped cross section and a locking piece 8 folded back inward from the upper edge of the outer side of the V-shape. is formed, and both ends (front and rear ends) of this joint 9 are crushed like the above-mentioned frame piece 4. At the other end of the plate 1 parallel to the reinforcing rib 2 (the left end in the figure), a retaining piece 10 is formed which is press-fitted into the joint 9 and hooked onto the locking piece 8 . This retaining piece 10 is formed by bending the other end of the plate 1 downward and sloping it inward, and also bending its lower end upward towards the inside to form a V-shaped cross section. has been removed.

The outer edge of the V-shaped joint 9 is lower than the top surface of the plate 1 by the thickness of the plate 1.

The flat deck plate 11 of the present invention configured as described above is mounted between the steel beams 6 (see FIG. 2) using the mounting pieces 4, and the flat deck plate 11 is
The upper surface and the upper surface of the steel beam 6 are set to be approximately the same plane, and the flat deck plate 1 is placed in the longitudinal direction of the steel beam 6.
The same flat deck plates 11 as 1 are mounted and connected one after another. That is, as shown in FIG. 7, a retaining piece 10 having a V-shaped cross section at the other end of the adjacent flat deck plate 11 is inserted into the joint 9 having a V-shaped cross section at one end of the flat deck plate 11. Locking piece 8
Each flat deck plate 11 is mounted between the steel beams 6 by successively press-fitting them against the pressure. Thus, each flat deck plate 11 is
Since the upper edge of the outer side of the V-shape of the joint 9 is lower than the plate 1 by the thickness of the plate 1, they are on the same plane. When the retaining piece 10 press-fitted into the joint 9 tries to lift up, the locking piece 8 of the joint 9
This prevents it from lifting up and does not come off.

Next, other embodiments of the flat deck plate according to the present invention will be explained with reference to FIGS. 8, 9 and 10, respectively. Since the same reference numerals in the figure as in FIG. 7 indicate the same parts, the explanation thereof will be omitted. Figure 8 shows a joint 9 at one end (right end) of the plate 1 parallel to the reinforcing rib 2.
The retaining piece 10' at the other end of the plate 1, which is press-fitted into the plate 1 and hooked onto the locking piece 8, is attached to the plate 1.
The other end is bent downward and inclined inward, and the lower end has a structure in which projections 12 are cut and raised at regular intervals in the longitudinal direction.

The flat deck plates 11 are successively mounted between the steel beams 6 and connected to adjacent flat deck plates 11, as in the previous embodiment. That is, as shown in FIG. 8, a retaining piece 10' at the other end of the adjacent flat deck plate 11 is inserted into the joint 9 at one end of the flat deck plate 11.
is press-fitted against the locking piece 8 of the joint 9, and the cut-and-raised protrusion 12 is continuously hooked onto the locking piece 8 of the joint 9, and the flat deck plate 11 is inserted between the steel beams 6. It will be connected to and mounted on. Thus, the retaining piece 10' of the flat deck plate 11 is
Even if it tries to float up, it will not come off because it is caught on the locking piece 8.

In FIG. 9, the bottom outer surface of a joint 9 having a V-shaped cross section at one end (left end) of the plate 1 is in contact with the outer surface of the reinforcing rib 2, and the locking piece 8 is connected to the outer side of the V-shape. The V-shaped retaining piece 10 at the other end of the plate 1 is expanded by bending the plate 1 substantially in parallel.

This flat deck plate 11 is also successively mounted between the steel beams 6 and connected to the adjacent flat deck plate 11, as in the previous embodiment. That is, as shown in FIG. 9, the flat deck plate 1
Insert the retaining piece 10 at the other end of the adjacent flat deck plate 11 into the joint 9 at one end of the joint 9.
The flat deck plate 11 is connected and mounted between the steel beams 6 by successively press-fitting them against the locking pieces 8. In this way, when the retaining piece 10 of the flat deck plate 11 tries to lift up, it gets caught on the locking piece 8 of the joint 9.
It prevents it from lifting up and never comes off. In addition, in this flat deck plate 11, since the outer surface of the bottom of the joint 9 is in contact with the outer surface of the reinforcing rib 2, when the retaining piece 10 is press-fitted into the joint 9,
Deformation of the joint 9 can be prevented even if an excessive force is applied from above.

FIG. 10 shows the bending angle of the locking piece 8 in the joint 9 having a V-shaped cross section at one end (left end) of the plate 1 to be made smaller so that it is positioned near the V-shaped opening, and its tip is directed downward. It is bent parallel to the inside side of the V-shape of the joint, and the gap 13 is made approximately equal to the thickness of the plate 1, and the other end (right end) of the plate 1 is made parallel to the inside side of the V-shape of the joint, and the other end (right end) of the plate 1 is made parallel to the inside side of the V-shape of the joint. Cut-out protrusion 1
2 is provided with a retaining piece 10'.

This flat deck plate 11 is also successively mounted between the steel beams 6 and connected to the adjacent flat deck plate 11, as in the previous embodiment. That is, as shown in FIG. 10, a locking piece 10' at the other end of the adjacent flat plate 11 is inserted into the joint 9 at one end of the flat deck plate 11 using a cut-out protrusion 12. 8 while opening the gap 13 of the V-shaped joint 9 and fitting it, and continuously hooking it to the bent end of the locking piece 8 of the cut-and-raised protrusion 12, thereby forming the flat deck plate. 11
are connected and mounted between steel beams 6. Thus, the retaining piece 1 of the flat deck plate 11
Even if 0' tries to float up, it will not come off because it is caught on the locking piece 8.

As can be seen from the above explanation, when the flat deck plate of the present invention is successively installed between steel beams and connected to an adjacent flat deck plate, the V
The workability is extremely high because the engagement connection can be made simply by press-fitting the retaining piece at the other end of the adjacent flat deck plate into the shaped joint from above. In addition, the retaining piece is prevented from lifting up and will never come off, so there is no need to weld it in place like in the past, and there is no leakage when concrete is placed on the flat deck plate, and the reinforcing ribs do not come off. Since there is no press-fitting of the stopper piece, the strength will not decrease due to expansion. Therefore, there is no possibility that the connecting portion will be depressed by concrete pouring, and the reinforced concrete slab can be constructed safely and accurately.

[Brief explanation of the drawing]

Figure 1 is a partially cut-away top perspective view of a conventional flat deck plate, Figure 2 is a side view of the flat deck plate mounted on a steel beam, and Figure 3 is a view of the flat deck plate. FIGS. 4 and 5 are cross-sectional views showing the connected state of other conventional flat deck plates, and FIG. 6 is a partially cutaway top perspective view of the flat deck plate of the present invention. , FIG. 7 is a cross-sectional view showing the connected state of the flat deck plate, and FIGS. 8 to 10 are cross-sectional views showing the connected state of other flat deck plates of the present invention. DESCRIPTION OF SYMBOLS 1... Plate, 2... Reinforcement rib, 4... Mounting piece, 8... Locking piece, 9... Joint, 10, 10' retaining piece, 11... Flat deck plate, 1
2... cut-and-raised projection, 13... gap.

Claims (1)

[Scope of utility model registration request] Multiple reinforcing ribs are bent in parallel at regular intervals on the bottom side of a horizontal plate, and both ends of each reinforcing rib are crushed to form a flat mounting piece at both ends perpendicular to the reinforcing ribs of the plate. The flat deck plate has a locking piece connected to one end parallel to the reinforcing rib and having a V-shaped cross section and folded back inward from the upper edge of the outer side of the V-shape. 1. A flat deck plate comprising a crushed joint, and a retaining piece press-fitted into the joint and hooked onto a locking piece at the other end parallel to the reinforcing rib.