JPS60233253A - Construction of concrete floor panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a concrete deck slab, in which both ends of a deck plate are hung between the board frames for forming a beam in a concrete deck slab to be cast. After concrete is poured over the deck plate and inside the beam forming board frame, when the beam forming board frame is removed, the deck plate falls off from the poured concrete slab. The purpose is to make it possible to firmly integrate it with the concrete floor slab without any problems.

There are various shapes of deck plates for concrete slabs, and for example, there is a deck plate 1 as shown in FIG.

This deck plate 1 is made by bending and forming a single steel plate.
The basic shape is one comprising a flat plate part 2 and parallel linear ribs 3 in the longitudinal direction (span direction) formed at a plurality of locations in the width direction on the back surface of the flat plate part 2, and the ribs 3
Although there are various cross-sectional shapes, the example shown in FIG. The web portion 3a and the 7-run 9 portion 3b are pressed together from the upper surface of the portion 2 and the lower surface of the 7-run 9 portion 3b as shown in FIG.
As shown in FIG. 3, a flat suspension part 4 is formed by crushing the flat plate part 2 along the back surface thereof.

By the way, when using the deck plate 1 as a formwork for a concrete slab, both ends of the deck plate 1 are hung between the upper surfaces of the upper flanges 5a of each H-shaped steel beam 5, as shown in FIG. When pouring concrete onto the deck plate 1, both ends of the deck plate 1 are supported by the upper flanges 5a of each H-shaped steel beam 5.
Although there is no danger that the deck plate 1 will fall off from the concrete slab that has been cast, as shown in Fig.
When concrete is poured over the deck plate 1 and inside the temporary frame 6 by hooking both ends of the deck plate 1 and 1 onto the gap, and when the temporary frame 6 is removed after pouring, the deck plate 1 is There was a risk of it falling off the concrete slab.

In this way, if both ends of the deck plate 1 are simply hung on the beam forming board frame 6, when the temporary frame 6 is removed, the deck plate 1-1 will not touch the concrete floor that has been placed. Since there is a risk of the plate falling off the plate, conventional measures to prevent the plate from falling off include, for example, welding round bar anchors between the reinforcing bars in the temporary frame 6 and the deck plate 1;
Alternatively, for example, anchor bolts are provided protruding from the flat plate portion 2 of the deck plate 1 in order to integrate the deck plate 1 and the cast concrete slab.

However, welding round bar anchors or attaching anchor bolts on site requires a lot of effort and time, and there is a problem in that the workability of constructing concrete slab deck plates is extremely poor.

The present invention has been made to solve the above-mentioned conventional problems, and embodiments thereof will be described below with reference to FIGS. 6 to 9.

The flat suspension part 4 in the conventional deck plate 1 is
As shown in Fig. 3, the wall thickness is considerably thicker than that of the flat plate part 2, and the poured concrete leaks from the step gap with the flat plate part 2.
, (B), the portions of the flat plate portion 2 located on each end side of the deck plate are extruded downward to form four portions 2a having the same horizontal plane as the lower surface of the flat suspension portion 4. An anchor member insertion allowance 2b is formed by extruding upward from the bottom surface of the four parts 2a inwardly from the edge of the four parts 2a, or a portion of the flat plate part 2 located on each end side of the deck plate 1 is formed by forming the anchor part 2b. Part 4-hole insertion allowance 2b
The four parts 2a are extruded downward, leaving the remaining part, to form four parts 2a having the same horizontal plane as the lower surface of the flat suspension part 4.

The anchor member inserted into the anchor member insertion allowance 2b may be, for example, a double-shaped anchor member 7 as shown in FIG. 7(A) or a double-shaped anchor member 7 as shown in FIG. 7(B). It is preferable to use a U-shaped anchor member 7.

The inner height and width of the anchor member insertion allowance portion 2b correspond to the wall thickness and width of the insertion portion of the anchor member member 7.

Note that the recessed portion 2a surface, the anchor member insertion allowance portion 2b surface,
Nail holes 2c and 7a for temporary fixing to the beam forming board frame 6 may be bored in the insertion portion surface of the anchor member 7, respectively.

The anchor member 7 is made by bending a flat bar into a two-shape or a U-shape.
An anchor member bent into a U-shape or a U-shape may also be used.

In this case, the anchor member insertion allowance portion 2b has, for example, an inner height and a width that correspond to the outer diameter of the round bar so that the anchor member insertion portion 2b made of a round bar can be inserted therein. .

As shown in FIGS. 8 and 9, both ends of the deck plate 1 are hung over the beam forming board frames 6, and the beams are formed from the nail holes 2c on the four parts 2a as necessary. Drive a nail into the upper edge surface of the board frame 6 to temporarily fix the deck plate 1, and insert, for example, a two-shaped anchor member 7 into the anchor member insertion allowance 2b, If necessary, drive a nail into the upper edge surface of the beam forming board frame 6 from the nail hole 2c on the anchor member insertion allowance 2b surface through the nail hole 7a of the anchor member 7 to secure the anchor. After the members 7 are temporarily secured, concrete 8 is poured over the deck plate J and inside the temporary frame 6 so as to bury the anchor members 7.

As described above, according to the present invention, unlike conventional methods, for example, round bar anchors are welded between the reinforcing bars in the beam forming board frame and the deck plate, or anchor bolts are attached to the deck plate. The deck plate can be firmly integrated into the poured concrete slab by simply setting the anchor parts, without having to carry out on-site work that requires a lot of effort and time, such as protrusion installation. Therefore, concrete 1/floor slab construction can be carried out extremely efficiently.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a conventional deck plate, Fig. 2 is a side view of the same as above, Fig. 3 is a perspective view showing a conventional example of the end of the deck plate in Fig. 2, and Fig. 4 is a perspective view of the deck plate. An explanatory diagram showing a mode in which a plate is hung between the upper surfaces of the upper flanges of each H-shaped steel beam material, and Fig. 5 is an explanation showing a mode in which a deck plate is hung between the upper surfaces of the upper flanges of each H-shaped steel beam material. Figure, 6th
Figures (A) and (B) are perspective views showing each embodiment of the present invention at the end of the deck plate, Figures 7 (A) and CB) are perspective views showing each embodiment of the anchor member, and Figure 8. 9 is an explanatory diagram showing an embodiment of the method for constructing a concrete slab according to the present invention, and FIG. 9 is a sectional view taken along the line A-A in FIG. 8. Figure 3 Figure 4 Figure 5 Figure 61!1 CA) Figure 6 (B) (A) Figure 7 (B)

Claims (1)

[Claims] Pass both ends of the deck plate between the plank frames for forming the beam in the concrete slab, and between the upper edge surface of the plank frame for forming the beam and the bottom surface of each end of the deck plate. The lower part of the anchor member bent into an arbitrary shape is inserted into the method, and concrete is poured over the deck plate and inside the beam forming board frame so as to bury the anchor member. Construction method of concrete floor slab.