JPH047237Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a formwork for constructing a slope that prevents slope collapse.

Conventional technology In order to construct a legal framework to prevent the collapse of conventional slopes,
It was constructed by installing weir plates on the slope and spraying mortar or concrete with a small amount of slump.

Problems to be solved by this idea The problem with the legal framework constructed using shotcrete etc. is that air gets mixed into the concrete etc., causing variations in the strength of the legal framework. be.

Furthermore, when pouring mortar or concrete with a large amount of slump into the formwork, there is a problem in that the mortar or concrete flows out due to the sloped surface.

In order to solve this problem, it is conceivable to install a lid between the left and right weir plates to prevent the mortar or concrete from flowing out, but the weight of the mortar is large and it is necessary to firmly support it.

Means for Solving the Problems The formwork for a legal framework according to this invention has a cover plate that spans the inner side between the upper ends of the left and right weir plates made of long and flat expanded metal, and a mesh at the top of the left and right weir plates. A rod-shaped holder is attached to the cover through the cover plate, and the top surface of the cover plate is held down.

In this way, the cover plate is held down by the holder to support the weight of the mortar or concrete.
This shall prevent mortar, etc. from flowing out.

Embodiment Hereinafter, this invention will be explained in detail based on an embodiment shown in the drawings.

In the figure, reference numerals 1 and 1 denote left and right weir plates made of expanded metal, and a lid plate 2 and a bottom plate 3 made of expanded metal are spanned vertically in parallel between the upper and lower ends of the left and right weir plates 1, 1. Left and right weir plates 1,
A plurality of rod-shaped holders 4 pass through the upper mesh of the expanded metal of the left and right weir plates 1, 1 of the formwork and press the upper surface of the lid plate 2 and the lower surface of the bottom plate 3, and are spaced appropriately in the longitudinal direction. are installed apart from each other. A steel rod is used as the holder 4, and the left and right ends of the holder 4 are bent at the outer surfaces of the weir plates 1, 1 to prevent them from coming off.

The formwork as described above is placed on the slope and fixed with anchors. Reinforcing bars are placed inside the formwork. Mata Kita may be arranged horizontally and vertically in a grid pattern on the slope, or they may be arranged only vertically.

To explain the construction method using formwork as described above, formwork is stacked up and down along the slope. A pouring opening 5 is formed in the upper part of the cover plate 2, and mortar or concrete 6 is poured slightly below the opening. Thereafter, the pouring opening 5 is closed with expanded metal, and pouring is resumed from the pouring opening 5 of the formwork above it to perform pouring.

Since the cover plate 2 and the bottom plate 3 support the weight of the mortar etc. 6 by the holder 4, the cover plate does not come off.

The weight applied to the holder 4 is supported by the expanded metal mesh that is the weir plate 1, but the expanded metal will not come loose and the formwork will not come apart.

4 and 5 show another embodiment, in which the left and right dam plates 1, 1 of approximately U-shape and the bottom plate 3 are integrally made of expanded metal. A cover plate 2 is placed between them and held down by a holder 4.

The ones shown in Figures 6 and 7 are left and right weir plates 1, 1.
This is a case where only the cover plate 2 is stretched between them.

Further, as shown in FIGS. 8 and 9, the left and right ends in the width direction of the cover plate 2 and the bottom plate 3 may be bent so as to abut against the inner surfaces of the weir plates 1 and 1 so as to overlap. In this way, the expanded metal overlaps, and after the concrete hardens, the lid and side expanded metal formwork are integrated by the shearing effect of the concrete, creating a concrete structure with high bending and shearing strength, that is, a stirrup-like structure. The effects are significantly improved.

Effects of the invention The formwork for the legal framework according to this invention spans the weir plate between the upper ends of the left and right weir plates made of expanded metal, and attaches a rod-shaped holder that penetrates the left and right weir plates and presses the top surface of the cover plate. Therefore, a formwork that is easy to construct can be provided at a low cost, and the cover plate prevents mortar or concrete from flowing out within the formwork, making it possible to cast mortar with a large slump.

Because the cover plate is held down by the holder,
Even if the weight of mortar etc. is applied to the cover plate, the cover plate will not come off.

Because the holder is inserted through the expanded metal mesh, even if the holder is loaded with weight, the dam plate will not come off and the formwork will not disintegrate.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the formwork according to this invention, Figure 2
The figure is a longitudinal cross-sectional view, and Figure 3 is a cross-sectional view of the construction state.
FIG. 4 is a perspective view of another embodiment of the formwork, FIG. 5 is a longitudinal sectional view thereof, FIG. 6 is a perspective view of another embodiment of the formwork, FIG. 7 is a longitudinal sectional view thereof, and FIG. 8 is a perspective view of another embodiment of the formwork. 9 are longitudinal sectional views of other embodiments. 1...Weir plate, 2...Lid plate, 3...Bottom plate, 4...
Holder, 5... Pouring opening, 6... Mortar or concrete.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cover plate is spanned between the upper ends of the left and right dam plates made of long and flat expanded metal, and a rod-shaped holder is inserted through the upper mesh of the left and right dam plates. A formwork for legal frameworks characterized by the fact that the upper surface of the lid plate is pressed down. (2) The formwork for a legal framework according to claim 1 of the utility model registration claim, characterized in that the left and right ends in the width direction of the cover plate are bent to overlap with the left and right dam plates.