JPS60102425A - Slope frame construction and formwork therefor - Google Patents

Abstract

PURPOSE:To raise the workability of slope frame construction by a method in which expanded plastic pieces are fixed to the sloped ground along the undulation of the slope to form a polygonal formwork and cement mortar, etc., is placed into the apertures of the formwork to form the slope frame. CONSTITUTION:A formwork 1 of a square form without corners is built up by combining four expanded plastic pieces 2 of a planar view bent form. Afterwards, in the constructing stage of a slope frame 5, a framed structure of reinforcing bars is set, and then cement concrete or mortar is sprayed. The pieces 2 are fixed to the sloped ground by driving piles 8 inserted into the fittings 7 of the pieces 2 into the ground. The slope frame having high heat insulating property, high water holding capacity, and sufficient strength can be very easily constructed along the undulation of the slope with excellent workability because of the light weight of the frame materials.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a cast-in-place frame using a foamed plastic formwork, and the formwork thereof.

The cast-in-place frame method takes more time to construct than the block frame method, which uses precast 11 materials, but it is used when a stable slope can be obtained, a steep slope is accompanied by spring water, a long slope, or the soil is not in good condition. In addition, it serves to stabilize the slope in cases where floating rocks cannot be stopped due to rock formations with developed joints and cracks, concrete spraying, etc., and also plays a role in suppressing the collapse of the slope surface layer.

By the way, this cast-in-place frame construction method is generally carried out by installing formwork on the slope and pouring mortar (including concrete), and the workability and cost are greatly affected by the material of the formwork. was. Zunawaji: Traditionally, formwork has been made of steel plates to make it reusable, but this is not only expensive but also very heavy, so it is difficult to transport it, especially when constructing on steep slopes. Just raising it was hard work, and the workability was also quite poor.

Conventionally, formwork made of cardboard has been developed as a lightweight and easy-to-work formwork, but because it is made of cardboard, it has water absorption properties, and absorbs moisture during the curing of mortar, significantly reducing its strength after curing. This is especially a problem in the summer. Furthermore, because the insulation properties are poor, the moisture in the poured mortar may freeze in the winter, which often prevents it from achieving the required strength and being unable to function as a framework, especially in the winter. No work can be done at all in extremely cold regions such as the San'in region, Hokuriku region, or Hokkaido.

In addition, since this cardboard formwork is folded and then unfolded into a frame shape and installed on the slope, it is difficult to follow the undulations of the slope, so it is necessary to fill in the gaps that occur at the bottom of the formwork. It takes a lot of work and has poor workability, and cannot be used on steeply undulating slopes. In addition, due to the characteristics of corrugated board, it is not possible to perform detailed processing such as chamfering on the frame, making it difficult to mold an ideal frame in terms of appearance and strength, and making it difficult to reuse. Because it was impossible, it was not economically desirable.

Therefore, in view of the above points, the inventor of the present invention conducted extensive research and focused on the unique and excellent effects of foamed plastic, namely, that it is lightweight, easy to process, and has excellent heat and water retention properties. By using this as a formwork for molding the legal frame and further dividing it, it is possible to construct formworks of various sizes, and moreover, it is possible to easily conform to the undulations of the slope. We have developed a frame and a method for constructing a legal frame using this formwork.

According to the formwork and the method of constructing a slope frame using the same according to the present invention, since it is divided into component pieces, it is easy to transport to a slope, and it has excellent workability even on a highly uneven surface.
This makes it possible to take full advantage of the characteristics of the cast-in-place frame construction method.

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

FIG. 1 fa) shows a formwork fl) according to an embodiment of the present invention installed on a slope (6). This formwork (
11 is a foamed plastic component (2) with a bent shape in plan view.
A rectangular formwork fl) with the corners cut out is constructed by combining four pieces. The sides between the vertices are provided to increase the strength of the intersection when forming the legal frame (5), but naturally the square formwork (1) is made without this side. You can also use it as

After installing the formwork (1), at the stage of constructing the slope frame (5), the framework is generally constructed with reinforcing bars (14) and then concrete or mortar is sprayed, but depending on the condition of the slope (6) A reinforcing bar anchor, rock bolt, etc. may be provided at the intersection of (5) to integrate with the ground.

Since the formwork (11) according to the present invention has a structure divided into component pieces (2), as shown in FIG.
) by providing a gap in the joint (3) and fixing it to the slope, and by inserting a plate-shaped auxiliary component (4-inch) into the gap, it can be configured as a larger formwork (1). Even if component pieces (2) of the same size are used, the formwork (
The size of 1) can be set arbitrarily.

The auxiliary component piece (4) almost fills the gap between the joint part (3) of the configuration g-+21, and is made of a thin plate of hard plastic or the like, and is provided along the outer periphery of the component piece (2). However, a foamed plastic piece having the same cross-sectional shape as the component piece (2) constituting the formwork (1) may also be used.

Of course, in this case, if there is an uneven part of the slope (6) in the joint part (3), it is possible to form it in a triangular or trapezoidal shape in side view so as to fill it in the joint part (3) of the component (2) without any gaps. Needless to say.

In this way, the formwork (1) according to the present invention can be laid on slopes of any shape by combining the component (2) and the auxiliary component (4), and can be installed on slopes of any shape. It facilitates construction. However, the shape of the formwork (1) is not limited to a square or hexagonal shape;
al, (may be configured in a triangular or hexagonal shape as shown in bl. This can be achieved by combining the component pieces (2), and of course by combining the auxiliary component pieces (4) It is also possible to make the size arbitrary.

As in this example, the individual constituent pieces (2
) can maintain a regular polygonal shape even if an auxiliary component (4) is inserted as long as its component (2) has one vertex. For example, as shown in Figure 2 (+1), By dividing the object into three component pieces (2) with two vertices and inserting the auxiliary component piece (4) into these, you can change not only the size of the formwork + 11, but also its shape. You will be able to do that.

Therefore, by combining the constituent pieces (2) with these various shapes and the auxiliary constituent pieces (4), it is possible to construct the legal frame (5) in a shape that has not been possible in the past. It can be adapted to the slope (6) of the shape very easily and is also very aesthetically pleasing.

Furthermore, since the formwork (1) according to the present invention is divided to be constructed by a combination of the constituent piece (2) or the constituent piece (2) and the auxiliary constituent piece (4), the formwork (1) has a slope (6).
), it can be fixed very easily along the undulations of the formwork, there is no need to install spacers between the formwork and the slope as in the past, and the construction period can be significantly shortened, resulting in significant cost savings. It is possible to bring it down.

To fix the formwork component (2) to the slope (6), attach the stakes (
8) and drive it into the slope (6). The outer edge (9) provided at the upper end of the component piece (2) forms a chamfer on the legal frame (5) as shown in Figure 4, and the constructed legal frame (
5) By removing the sharp corners, this was done for aesthetic reasons and to prevent danger. However, this outer edge (
9) is very easily damaged, so it is protected by covering a part of it with ItA (+5) made of plastic, etc. When molding component (2) with foamed plastic, part of this cover is +A' (+5) is integrally molded.

In the figure, the fixation with the stakes (8) becomes unstable due to the step of the foot (11) provided at 17 for the purpose of reinforcing and stabilizing the lower part of the piece (2) consisting of the thick frame end (l). This frame itself serves as a reinforcing material.Of course, this frame edge (10
) may be integrally molded from foamed plastic in the same way as the foot (11), or the foot (11) may have a hole through which the stake (8) is inserted.

Next, as shown in Figure 5, after placing 11 pieces of mortar, the joint part (3) of the component piece (2) cannot be bent outward due to the molded frame (5) during demolding. , When bent inward, the joint 9 old 3) The chamfered part (13) provided in the vertical direction on the inside joins the other component piece (2) (:3)
You will be able to easily remove the joint without having to run into it. Therefore, demolding becomes easy, which increases the frequency of reuse, making it extremely cost effective.

Furthermore, as shown in FIG. 6, if a film sheet 12), which is a peeling means, is attached to the outer peripheral surface of the component (2),
It becomes easier to remove old molds. This film sea 1-(1
In addition to 2), it is also possible to apply an emulsion type release agent so that water evaporates and forms a film on the surface.

As described above, since the formwork for constructing the legal frame according to the present invention is made of foamed plastic, it has excellent heat insulation and water retention properties, and when the legal frame is constructed, it has G5. Sufficient strength is obtained, and since it is a trick, it has excellent workability on steep slopes, etc. Furthermore, since the formwork is composed of component pieces, demolding is easy and it is extremely easy to change the undulations and shape of the slope. It has an extremely excellent effect of being able to respond to
It is something that

[Brief explanation of drawings]

Figure 1 fan, (bl and Figure 2 (al, (11+)
, (e) are plan views showing examples of the formwork according to the present invention, Fig. 3 is an IUi side view of the formwork, Fig. 4 is a J perspective view showing the state in which the legal frame is constructed, and Fig. 5 is a partial enlarged view of the formwork, No. 6
The figure is the same figure as the component piece. 1... Formwork 2... Component piece 3... Joint part 4... Auxiliary component piece 5... Slope 6... Slope 7... Fixture 8... Pile 9. ... Outer edge 10 ... Frame end thickness 11 ... Leg H312 - ... Film sheet 13 ...
Chamfered portion 14...Reinforcement bar 15...Cover part Patent applicant An913 Takeo 4th 5 K50 5:, -11--1,,,,y Hand acid k Ne city official calligraphy (method) ■, Minor case indication 1988 Patent Application No. 120637 2, Name of invention Legal framework construction power method and legal framework construction form 3, Person making amendment Relationship with the case Patent applicant address Kamihonjo, Matsue City, Shimane Prefecture Town 2026 13 Name Branch Buyu 4 Agent address 2-3-10 Tenjinbashi, Kita-ku, Osaka 1981
1J17 date (shipment date 59.11.27) 6,'? d
i In the description of the correct subject matter, "Brief explanation of the drawings" 7, [Fig. 2 (al, (bl. (al, (b) Correct as J.

Claims (1)

[Scope of Claims] 1. Forming a polygonal formwork with foamed plastic structural pieces formed in a bent shape in plan view having at least one apex (fixed along the undulations of the slope, and spaced apart from each other) A slope is formed by pouring mortar into the gaps between a plurality of polygonal molds fixed to the slope surface, and after the mortar hardens, the foamed plastic structure constituting the mold is formed. A method for constructing a legal framework characterized by removing pieces. 2. A method in which a gap is provided at the joint of the component pieces, and a plate-shaped auxiliary component is inserted into the joint to construct a polygonal formwork. 3. A method for constructing a legal framework according to claim 1, wherein a peeling means is applied to the outer circumferential surface of a polygonal form made of component pieces. Method for constructing a legal framework. 4. A formwork for constructing a legal framework, characterized in that it is configured into a polygonal shape by combining foamed plastic structural pieces formed into a bent shape in plan view having at least one vertex. 5. Configuration 5. The formwork for constructing a legal frame according to claim 4, wherein a gap is provided between the joints of the pieces, and a plate-shaped auxiliary constituent piece is inserted into the joint part to construct a polygonal formwork. 6. A formwork for constructing a legal frame according to claim 4 or 5, which is formed by applying a peeling means to the outer circumferential surface of a polygonal formwork constituted by the constituent pieces. 7. The constituent pieces have an upper end portion A formwork for constructing a legal frame according to claim 4, 5 or 6, which is provided with an outer edge for chamfering. 8. At the upper end of the component piece provided with an outer edge for chamfering. The formwork for constructing a legal frame according to claim 7, which is covered with a cover member.