JPH0657994B2 - Structure of finishing plate attachment part on inner surface of parapet standing wall in concrete structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a finish plate attachment portion such as a PC plate that also serves as a decorative plate on the inner surface of a parapet in a concrete structure.

“Prior Art” As shown in FIG. 3, a finishing plate 8 such as a PC plate or a decorative plate is attached to the upper end of the standing wall 4 of the parapet 3 on the inner surface of the standing wall 4 of the parapet 3 of the concrete structure. It is fixed between the lower surface of the inward flange-shaped wall portion 5 and the slab 2 portion therebelow, and is stretched in parallel with the standing wall portion 4 and with a space between it and the standing wall portion. Fix the upper end of the finishing plate and the lower surface of the inward flange-shaped wall portion 5 with
This is done by fitting the upper end of the finishing plate 8 into the downward groove 21 provided on the lower surface of the inward flange-shaped wall portion. The groove 21 is a rafter-shaped groove forming member fixed to the upper surface of the inward flange-shaped wall portion 5 forming mold plate 12 as shown in FIG.
No. 22 was formed by the removal mark removed after the concrete was poured.

"Problems to be Solved by the Invention" In the above-mentioned conventional technology, a rafter-shaped groove forming member in which a finishing plate fitting groove 21 for the lower surface of an inward flange-shaped wall portion of a parapet is fixed to an upper surface of a concrete placing form plate. 22 Although it was formed by the removal trace, it is difficult to remove the groove forming member after placing concrete, and the groove cross-sectional shape of the lower surface opening formed in this way is from the groove upper wall surface side to the groove left and right side walls. Because it has a shape that hangs at a right angle,
A slight error may occur if a gap due to dimensional mismatch easily occurs between the finishing plate 8 and the side surface of the upper end of the finishing plate fitted in the groove, and if the difference between the thickness of the finishing plate and the groove width is reduced so that the gap does not occur. As a result, the upper end of the finishing plate may not fit into the groove.

According to the present invention, the lower surface opening groove for fitting the upper end portion of the finishing plate is a downward wide taper groove, so that the upper end portion of the finishing plate can be fitted into the groove without any gap, regardless of a slight thickness error. In addition, the groove is formed by the groove forming member lower surface that expands and projects both left and right side walls downward and outward from the left and right side edges of the top wall embedded in the lower surface of the parapet inward flange-shaped wall portion. And a reinforcing bar supporting plate is erected from the upper surface of the top wall of the groove forming member so that the groove forming member is a spacer for arranging concrete when forming the inward flange-shaped wall portion. In order that the groove forming member can be prevented from coming off from the inward flange-shaped wall portion, the flange attached to the upper end of the reinforcing bar supporting plate has an anchor function so that the groove forming member can be prevented from coming off. Is.

"Means for solving the problem" (1) An inward flange-shaped wall provided with a groove forming member for expanding and projecting the left and right side walls downward and outward from the left and right side edges of the top wall at the upper end of the parapet standing wall portion. A lower surface of the PC is formed by opening the lower surface in parallel with the parapet upright wall and embedding it in the lower surface of the groove forming member into a downward groove formed by the top wall and the left and right side walls of the groove forming member. The upper end of the finishing plate was fitted and the lower end of the finishing plate was directly or indirectly fixed to the slab.

(2) The reinforcing bar supporting plate is erected from the upper surface of the groove forming member top wall according to claim 1, and a flange is attached to the upper end portion of the reinforcing bar supporting plate.

[Operation] As shown in FIG. 1B, since the groove 7 for fitting the upper end of the finishing plate 8 has a wide lower end opening and a narrower width at the upper end back, the thickness of the finishing plate 8 is slightly different. Even if they are different, as shown in FIG. 2 by a one-dot chain line and a two-dot chain line, the left and right side edges of the upper end of the finishing plate can be brought into contact with the inner surfaces of both side walls 6b, 6b of the groove forming member 6 with no gap. Further, the flange 6e at the upper end of the reinforcing bar supporting plate erected from the upper surface of the top wall of the groove forming member serves as an anchor because it is embedded in the concrete, and the detachment of the groove forming member 6 from the inward flange-shaped wall portion 5 of the parapet. To prevent.

"Example" 1 is an outer wall of a concrete structure, 2 is a slab, and 3 is a parapet. The parapet has an inward flange-shaped wall portion 5 attached to the upper end of the standing wall portion 4. A groove forming member 6 made of synthetic resin is embedded in the lower surface of the inward flange-shaped wall portion 5, and P is inserted into the groove 7 of the lower surface opening formed by the member.
The finishing plate 8 or a decorative plate formed by a C plate or the like is fitted with the finishing plate 8 and the lower end of the finishing plate is directly or waterproof layer 9, heat insulating layer.
It is fixed to the slab 2 via 10 and lightweight concrete board 11 and so on.

In the groove forming member 6, the left and right side walls 6b, 6b are projected so as to expand downward from the right and left side edges of the top wall 6a. As shown in the figure, the mounting plate portions 6c, 6c may be projected outward from the lower ends of both side walls, and the reinforcing bar support plates 6d, 6d of equal height may be erected from the upper surfaces of the left and right side portions of the top wall 6a. It is advisable to attach flanges 6e, 6e to the inner edge of the upper end of these support plates.

As shown in FIG. 2, the mounting plate portions 6c and 6c are provided with groove forming members 6 on the upper surface of the form plate 12 for forming the inward flange-shaped wall portion 5.
This is used when mounting the tongue, and the lower surface of the mounting plate portions 6c and 6c is applied to the upper surface of the mold plate 12, and the mounting plate portion on the parapet upright wall side is fixed to the mold plate with nails 13 made of synthetic resin or the like. After fixing and fixing the cast concrete, the form plate 12 is peeled off. Further, the reinforcing bar support plates 6d, 6d can be used as spacers when the reinforcing bars 14 are placed on the upper surface thereof when the reinforcing bars are arranged.
As shown in FIGS. 1B and 2, between the groove forming members whose end faces are in contact with each other and continuous with each other, a rod 15 as a joint member may be fitted between the reinforcing bar supporting plates 6d and 6d. One half of the rod is fitted between the reinforcing bar supporting plates of the one groove forming member, and the other half of the rod is fitted between the reinforcing bar supporting plates of the other groove forming member. Can be placed on the same straight line.

[Advantages of the Invention] The present invention is configured as described above, and the groove forming member 6 may be embedded in the lower surface of the inward flange-shaped wall portion 5 of the parapet,
Since the removal is not required, there is no troublesome removal as in the conventional case, and the groove forming member projects the left and right both side walls 6b, 6b downwardly from the both left and right edges of the top wall 6a.
Since the left and right side walls of the groove formed by the lower surface of the member are tapered so as to open downward, the finished plate having a rectangular cross section to be fitted into the groove has a slightly different thickness as shown in FIG. Even the left and right edges of the finish plate and the left and right side walls of the groove forming member
Only by changing the contact position with the inner surfaces of 6b and 6b, it is possible to surely fit them without creating a gap therebetween.

By raising the reinforcing bar support plate 6d from the upper surface of the groove forming member top wall, it is possible to support the inward flange-shaped wall forming reinforcing bar of the parapet.

[Brief description of drawings]

FIG. 1 shows the structure of the present invention. FIG. 1A is a perspective view showing a part of the cross section, FIG. 1B is an enlarged view of a main part thereof, and FIG. 2 is attachment of a groove forming member used in the present invention. A sectional view showing the method,
FIGS. 3 and 4 show a conventional example. FIG. 3 is a perspective view showing the same manner as in FIG. 1A, and FIG. 4 is a sectional view showing a conventional groove forming member attached state. 2 ... Slab, 3 ... Parapet 6 ... Groove forming member, 6a ... Top wall, 6b ... Side wall 6c ... Mounting plate part, 6d ... Reinforcing bar support plate 6e ... Flange, 8 ... Finishing plate

Claims (2)

[Claims] 1. A parapet upright wall portion is provided with a groove forming member that expands and projects both left and right side walls downwardly from both left and right edges of the top wall to the lower surface of the inward flange-shaped wall portion attached to the upper end of the parapet upright wall portion. The bottom surface of the groove forming member is opened and embedded in parallel with the upper surface of the groove forming member, and the upper end of the finishing plate such as a PC plate having a rectangular cross section is fitted into the downward groove formed by the top wall and the left and right side walls of the groove forming member. A structure of a finishing plate mounting portion on an inner surface of a parapet in a concrete structure, wherein a lower end of the finishing plate is directly or indirectly fixed to a slab. 2. The concrete according to claim 1, wherein the reinforcing bar supporting plate is erected from the upper surface of the groove forming member top wall according to claim 1, and a flange is attached to an upper end portion of the reinforcing bar supporting plate. Structure of the finishing plate attachment part on the inner surface of the parapet in the structure.