JPH0122405B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a reinforcing structure on a slope, which is carried out to prevent the collapse of the ground and stabilize the same, and a formwork used in the method. It is.

Conventionally, in order to reinforce the ground, a lattice-shaped slope structure B is constructed using concrete on a slope surface A, as shown in FIG. The construction methods include assembling a legal framework using precast concrete members, and similar to the construction of general concrete structures, arranging reinforcement on site, installing formwork, and pouring concrete into it. The method of setting is implemented. However, in the construction method using precast concrete members, the weight of the members is large and it is difficult to construct on slopes, so recently, the cast-in-place method is often used.

Generally, as shown in Figure 2, this cast-in-place method involves arranging reinforcing bars C in a lattice pattern on the slope A, installing formwork D, and pouring concrete. . However, even with this method, the formwork, which is quite heavy, must be carried up the slope and installed, and the formwork must also be installed on the slope with poor footing, making it very difficult to construct and expensive. There are many drawbacks.

This invention was made in order to solve the above-mentioned conventional drawbacks, and involves connecting lightweight and collapsible formwork, transporting each connected formwork in a flat folded state to the upper part of the construction site. Each formwork is installed sequentially from the top to the bottom, and after the formwork is installed, reinforcing bars are placed and concrete is poured, thereby eliminating the most time-consuming and labor-intensive formwork assembly. The aim is to significantly simplify and improve the economic efficiency and efficiency of construction of earth reinforcement structures.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 3 is a perspective view of the formwork connection body used in the construction method of the present invention, and Fig. 4 is a plan view showing the manner in which the formwork connection body is folded.
is a formwork formed in the shape of a rectangular frame in plan, using light board materials such as paper board such as cardboard, light metal board, synthetic resin board, etc., and each corner part can be bent freely by folding lines etc. 3. There is. Further, a large number of notches 4, 4 are provided at required intervals on the lower side of the formwork 1.

Then, an appropriate number of the formworks 1 are connected by bendable rope-like connectors 5, 5 so as to maintain a predetermined distance from each other, thereby forming a formwork connection body E. . A suitable material for the connector 5 is a flexible fiber rope or wire rope. Then, the connector 5 connects its end to the formwork 1
It is sufficient that the terminal is provided with a knob 6 or the like to prevent it from coming off.

When installing the formwork connector E, the connectors 5, 5 should be stretched in a straight line as shown in Fig. 3, and when transporting, housing, or storing the formwork connector E, As shown in FIG. 4, each formwork 1 is folded flat and stacked on top of each other. In this case, since the connecting body 5 is bendable, folding and stacking of the formwork 1 will not be hindered.

5 and 6 show other embodiments of the formwork 1,
This figure shows how the same formwork is folded, and in this example, folding lines 3a, 3a are also provided at the center of each side on which the connecting tool 5 is not attached, and the sides are folded inside as shown in Fig. 6. I try to fold it towards the side. By folding in this manner, the thickness in the folded state increases, but the width decreases. Note that the folding structure of the formwork 1 is not limited to the above-described embodiment, and other suitable folding methods can be adopted.

The construction method of the present invention is carried out using the formwork connector E as described above.

First, the formwork connected body E is made by folding the required number of formworks 1, 1 connected flatly and overlapping each other as shown in Fig. 4 or Fig. 6, and moving it to the construction site as shown in Fig. 7. The uppermost formwork 1a is fixed on the slope A using anchors 7, etc., and then the other formworks 1b to 1n connected to the formwork 1a are moved along the slope A. Then, the connectors 5, 5 are successively extended and lowered to hang and expand the formwork into the usage condition as shown in FIGS. 3 and 5. As a result, the molds 1a to 1n are expanded as shown in FIG. 8, and are successively arranged downward at intervals corresponding to the length of the connector 5. The installation of the formworks 1a to 1n can be carried out easily and quickly since the formworks themselves are lightweight. In this case, each of the formworks 1b to 1n is suspended and supported by the uppermost formwork 1a via the connector 5, so they may be left in that state, but if necessary, The frames may be fixed to the slope A using anchors, pegs, etc. for each frame or every few frames.

By the above-mentioned work, the formwork can be installed in the vertical direction of the slope A. Then, by repeating the formwork installation work using the formwork connection body E along the lateral direction of the slope A, the predetermined formwork installation is completed. It goes without saying that when installing the formwork, the interval between adjacent formwork in the lateral direction of the slope A is adjusted to a predetermined dimension. In addition, the slope A usually has many unevenness, and therefore the formwork 1
In some cases, a large gap may be formed between the lower edge of the formwork 1 and the slope A. In such cases, the lower part of the formwork 1 can be partially cut using the notch 4 at the bottom of the formwork 1. By bending it outward, the lower edge of the formwork will fit better with the slope A, the gap will become smaller, and the leakage of concrete to be poured later can be prevented.

Once the formwork has been installed on the slope A, reinforcing bars 8, 8 are placed between each formwork as shown in FIG. These reinforcing bars 8, 8 are fixed at required locations by anchors 9, 9. Further, in this case, the formworks 1 may be connected to each other by separators 10, 10 (shown by chain lines in FIG. 9), or may be fixed to the reinforcing bars 8 provided. In addition, if the connecting tool 5 becomes awkward when installing the reinforcing bar 8, it is preferable to cut the connecting tool and remove it. In that case, each formwork 1 may be fixed to the slope A by appropriate means such as using anchors or pegs.

Once the reinforcing bars 8 have been placed, the connectors 5 are removed if necessary, and concrete or mortar is poured between the formworks 1. After the concrete hardens, the installed formwork 1 is usually removed, but if the formwork 1 is made of paper such as cardboard, it can be left as is without being removed as it is disposable. Good too.

In addition, for structures such as legal frameworks, formwork such as planar triangular or trapezoidal forms may be required for construction at the corners, but in such cases, formwork with a shape that is compatible with that may be manufactured. It can be used in conjunction with the above-mentioned formwork connection body.

As explained above, this invention aims to replace the installation of formwork, which requires a great deal of labor and expense, by connecting lightweight and collapsible formwork in the on-site construction of structures such as legal frames for reinforcing the ground. By using formwork connections, we made it extremely simple, and because the formwork was installed first and the reinforcing bars were placed afterwards, the reinforcing bars were already installed. It can be carried out easily, quickly, and accurately using formwork, and has many excellent effects, such as significantly improving workability as a whole and greatly reducing construction time and construction costs. be.

[Brief explanation of drawings]

Fig. 1 is a slope view showing the reinforcing structure constructed on the slope, Fig. 2 is a plan view showing the conventional cast-in-place construction, and Fig. 3 is the mold used in the construction method of the present invention. FIG. 4 is a perspective view showing an embodiment of the frame connection body; FIG. 4 is a plan view showing the same formwork connection body in a folded state; FIG. Figure 6 is a plan view showing the formwork connection in the folded state, Figure 7 is a side view showing the folded formwork connection installed on the top of the slope, and Figure 8 is the same formwork connection. FIG. 9 is a side sectional view showing the body expanded and each formwork installed, and FIG. 9 is a plan view showing reinforcing bars arranged between the formworks. A...Slope, B...Slope, C...Reinforcement, D...Formwork, E
...Formwork connection body, 1...Formwork, 3...Fold line, 4...Notch,
5...Connector, 6...Kob, 7, 9...Anchor, 8...
Rebar, 10... Separator.

Claims (1)

[Scope of Claims] 1. A mold is created by connecting a plurality of frame-like and foldable formworks using lightweight plate materials in series with each other by bendable rope-like connectors of a predetermined length. A frame connection body is constructed, a plurality of these formwork connection bodies are arranged at a predetermined interval above the construction site, each formwork of each formwork connection body is sequentially suspended downward via a connecting tool, Slope reinforcement characterized by installing each formwork connection body on a slope in an expanded state, then placing reinforcing bars between the formworks, and then pouring concrete between the formworks. Construction methods for structures. 2 A foldable enclosing formwork is formed using lightweight board material, and a plurality of these formworks are connected in series by bendable rope-like connectors of a predetermined length. A formwork connection body used in the construction of slope reinforcement structures.