JPH0558887B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a concrete construction method using masonry forms, and more specifically, it is applicable to river bank protection, road improvement, housing development, steep slope collapse prevention, etc. This invention relates to a concrete construction method using masonry formwork useful for concrete construction to form a masonry pattern on a retaining wall.

<Prior art and its problems> Traditionally, retaining walls for river revetments, road improvements, housing development, steep slope collapse prevention, etc. have been constructed using concrete, which has advantages in terms of durability, material cost, construction cost, etc. There are many. However, in such construction, if the surface is made flat, only the inorganic, gray concrete surface will be emphasized, which will damage the residential and natural environments.

Therefore, in recent years, there has been a strong desire to develop retaining walls that do not damage the residential and natural environments.
In order to meet these requirements, a formwork with a masonry pattern for concrete was devised to express the appearance of a masonry pattern on the surface of a poured concrete retaining wall (in 1983).
-129851 publication, Utility Model Application Publication No. 59-10345),
Various concrete construction methods for retaining walls using this material have been proposed.

The invention described in Utility Model Application Publication No. 57-129851 is
This masonry pattern formwork for concrete is formed by attaching a pattern material, preferably a semi-rigid polyurethane material, with a masonry pattern embossed onto the entire surface of a well-known metal form or an improved type thereof.

In addition, the idea described in Japanese Utility Model Application Publication No. 59-10345 forms a joint part representing masonry and a flat plate-shaped recess defined with this as the top surface, and the masonry of the joint part and the flat plate-shaped recess is This is a masonry pattern formwork for concrete, in which a pattern material made of a material such as semi-hard rubber or synthetic resin and having a thin thickness is attached to the surface of a top board.

Therefore, if concrete construction of a retaining wall is carried out using the former type of masonry pattern formwork for concrete, a large amount of patterned formwork will be used in the structure, resulting in a heavy overall weight. Construction work becomes difficult and dangerous, such as when working at heights where materials must be piled up.
There are various drawbacks, such as the need to use a crane or the like to carry out the work, which increases construction costs.

In addition, when constructing concrete for a retaining wall using the latter patterned formwork, the overall weight is slightly lighter because less patterned formwork is used, but it also makes it easier to work at heights. As the weight is not reduced, the former has the same disadvantages as the former.

Moreover, the masonry pattern formwork for concrete can only be formed with a thin pattern by forming joints and flat dish-shaped recesses on the surface of the top plate, and the shape of the top plate and the pattern form can be Since the shape and positional relationship between the two must be in a preset relationship, when constructing a retaining wall using the latter type of masonry pattern formwork for concrete, this pattern formwork cannot be easily cut on site. ,
Another drawback is that a wide variety of concrete masonry pattern forms must be prepared in advance to suit the shape of the retaining wall construction site.

Furthermore, since the top plate and the patterned material are used in an integrated manner, there is also the disadvantage that a smooth curved surface cannot be formed when constructing a curved retaining wall.

<Purpose> This invention was made in view of the above-mentioned problems, and is useful for concrete construction to form a masonry pattern on the surface of retaining walls for river revetments, road improvements, residential land development, measures against collapse of steep slopes, etc. , the width of the retaining wall,
To provide a concrete construction method using a masonry formwork, which enables easy concrete construction regardless of height, degree of curvature, etc.

Another object of the present invention is to provide a concrete construction method using masonry forms that eliminates the need to prepare a wide variety of pattern forms and reduces construction costs. be.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the concrete construction method using the masonry formwork of the present invention is such that the concrete formwork, which has a masonry pattern formed on the concrete pouring side surface, is A first step of sequentially temporarily attaching a plurality of concrete formworks to one of the front and back concrete panels arranged with a gap between them in a horizontal direction;
A second step of placing the other concrete panel with a gap for concrete pouring between it and the concrete formwork, and then pouring concrete into the gap, and after the concrete has hardened, the concrete panel and a third step of dismantling the concrete formwork and forming a masonry pattern on the concrete surface.In a concrete construction method using masonry formwork, which includes the steps of dismantling the concrete formwork and forming a masonry pattern on the concrete surface, as the main concrete formwork, A formwork made of synthetic resin foam that has recesses and joints for forming a masonry pattern, and has grooves formed on the back side at positions corresponding to the joints, and is formed in multiple stages, and is formed in one stage. Using a unit block body having N (N is an integer) and N-1 rectangular patterns for each block, and making the arrangement of the rectangular patterns bilaterally symmetrical and having uneven parts for combination on both sides, The first step is performed by combining the uneven portions of the block body with the uneven portions of other unit block bodies.

<Function> According to the concrete construction method using a masonry form having the above configuration, the concrete form is a unit made of synthetic resin foam with grooves formed at positions corresponding to the joints on the surface of the concrete pouring side. Since concrete construction uses blocks, the material is lightweight, and the thickness of the joints protruding from the front side of the unit block is appropriately thinned from the back side, making it possible to reduce the weight of the unit block as much as possible. The weight of the formwork can be reduced. Can cut unit blocks with a cutter knife or nichrome cutter.

By using the concave and convex portions for unit block combinations, it is possible to combine (allocate) unit blocks with other unit blocks.

Furthermore, by using a plurality of unit blocks, it is possible to omit a wide variety of concrete forms that are required in advance according to the shape of the retaining wall, and it is possible to mass produce a small number of unit blocks. .

<Example> Hereinafter, an example will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view of a unit block body as a main formwork for concrete that can be used in a concrete construction method using a masonry formwork, and FIG. 2 is a bottom view thereof.

The unit block body 1 is formed of a molded product made of foamed polystyrene or other foam, which is formed by filling a mold cavity with foamed resin particles, heating and expanding the particles, and heat-sealing them together. .

As can be seen from FIG. 3, the unit block body 1 has a large number of concave portions 2 showing the surface shape of natural stone for masonry formed on the surface on the concrete pouring side, and between adjacent concave portions 2, A joint portion 3 for expressing the state of masonry is formed with a high and flat top surface.

In addition, a guideline 4 formed by a shallow groove is provided on the surface of the joint part 3, and when cutting the unit block 1 according to the design length and extension with a cutter knife, nichrome cutter for foam, etc. , it is configured so that it can be carried out in accordance with this guideline 4.

Such a unit block body 1 is formed in a plurality of stages, and each stage has N (N is an integer) recessed portions 2 and N-1 rectangles (including rectangles and squares) due to the joint portions 3. To be formed into a pattern,
In the unit block body 1 shown in FIG. 1, for example, the rectangular patterns are formed in three pieces, two pieces, three pieces, and two pieces from the lower stage to the upper stage.

In this case, the arrangement of the rectangular patterns is arranged symmetrically so as to provide combination uneven parts 5 on both sides, and by fitting with the uneven parts of other unit block bodies, which will be described later, the unit block can be formed. This simplifies connecting the bodies horizontally or vertically.

Next, as can be seen from FIG. 4, grooves 6 are formed on the bottom surface of the unit block body 1 at positions corresponding to the joint portions 3 on the surface side. This groove 6 is recessed on the bottom side depending on the protruding state of the joint portion 3.

Incidentally, on the back side of the unit block body 1, there is a concave portion 7 for connecting the pecon at the portion where the grooves 6 intersect with each other.
is formed toward the surface side.

With such a configuration, it is possible to obtain a unit block body 1 that can express a so-called masonry pattern of cloth (nuno) masonry (see FIG. 7).

FIGS. 5 and 6 show modified examples of the unit block body. In the unit block body 1' shown in FIG.
The unit block body 1 shown in FIG. 1 is formed upside down. That is, the recessed portions 2 are formed in N (N is an integer) and N-1 rectangular patterns in each row, and the rectangular patterns are 2, 3, 2, and 3 from the bottom to the top. It is set in.

Therefore, since the rectangular pattern of the unit block body 1 is arranged symmetrically, the concavo-convex portions 5' for combination are also formed on both sides of the unit block body 1'. The concavo-convex portion 5' in the unit block body 1 is a concave-convex portion that is shifted by one step from the concave-convex portion 5 of the unit block body 1, and as shown in the layout state of FIG. The configuration (allocation) is further simplified.

In the unit block body 1'' shown in FIG. 6, as described above, the recessed portions 2 are formed in N (N is an integer) and N-1 rectangular patterns in each stage, and the rectangular patterns are arranged from the lower stage to the upper stage. The uneven portions 5'' formed on both sides are also formed at the same opposing positions without misalignment with the uneven portions 5 of the unit block body 1. ing.

Therefore, as can be seen from the layout shown in FIG. 7, this unit block 1'' is used as being connected (allocated) to the unit block 1'.

Furthermore, in the layout shown in FIG. 7, an auxiliary block body 8 formed in a rectangular shape is allocated as a secondary concrete formwork to the main concrete formwork. This auxiliary block body 8 is fitted into the concave portions of the concavo-convex portions 5, 5', 5'' for combination, and is assembled into the respective unit block bodies 1, 1', 5''.
This is to form the 1″ side part into a straight line shape that looks good.

Here, FIG. 8 shows a state in which preparations for placing concrete have been completed, and FIG. 9 shows a state in which concrete is placed.

As can be seen from Fig. 8, in preparation for concrete pouring here, the front concrete panels 9 and 9', which serve as the membrane plates of the plywood boards placed at intervals for concrete pouring, are For example, as shown in Fig. 7, each unit block body 1, 1', 1'', auxiliary block body 8, etc. are placed horizontally on the retaining wall panel 9 according to the size of the retaining wall to be concreted. Allocate the direction appropriately,
A unit block body 1, etc., whose bottom surface is temporarily attached with double-sided adhesive tape, nails, etc. (not shown) is attached.

In addition, by pushing the thin walled portion out of the concave portion 7 for connecting the peacon and inserting the peacon 10, the front and back concrete panels 9, 9' facing each other can be connected with a distance maintained between them to form the unit block body 1, etc. A gap for concrete pouring is provided between the concrete formwork and the concrete panel 9' on the back side, and the assembly of unit block bodies 1, etc. to the concrete panel 9' on the back side is made more secure.

After completing preparations for concrete pouring as described above, concrete 11 is poured between the concrete formwork of the unit block 1 etc. and the concrete panel 9' on the back side.
After solidification, the unit blocks 1, etc. and the concrete panels 9, 9' are dismantled. This results in
Concrete construction of a retaining wall with a stacked pattern on the surface has been completed.

Note that, if necessary, various design changes can be made without changing the gist of the present invention, such as interposing reinforcing bars or the like in the concrete placement space to provide sufficient strength.

<Effects> As described above, according to the concrete construction method using a masonry form of the present invention, a synthetic resin foam with grooves formed at positions corresponding to the joints on the surface of the concrete pouring side is used as the concrete form. Since the concrete construction uses unit blocks consisting of concrete blocks, the material is lightweight, and the thickness of the joints that protrude to the front side of the unit blocks is appropriately thinned from the back side to reduce the weight of the unit blocks as much as possible. It is possible to reduce the weight of each formwork, and it is easy to cut unit blocks with a cutter knife or nichrome cutter.
By using the uneven parts for combination, assembly work with other unit blocks at relatively high places can be facilitated, and the danger can be significantly reduced.

In addition, since the unit blocks are made of flexible foam, for example, concrete construction of curved retaining walls can be performed more easily, and the work of arranging drainage pipes to be placed on retaining walls can be performed more easily. It can be done easily.

Furthermore, by allocating multiple unit blocks, it is possible to easily construct concrete with a stacked pattern on the surface regardless of the width, height, degree of curvature, etc. of the retaining wall. The advantage is that it is not necessary to prepare concrete formwork of different sizes and shapes in advance to match the shape of the construction site, and it is possible to omit the high-mix, low-volume production of formwork, which increases construction costs. There is also. In other words, it has the unique effect of making it possible to mass-produce a small number of unit blocks and reducing construction costs.

[Brief explanation of the drawing]

Figure 1 is a plan view of a unit block that can be used in the concrete construction method using masonry formwork, Figure 2 is a bottom view of the unit block, and Figure 3 is a partially cutaway perspective view of the unit block seen from the plane. Figure 4 is a partially cutaway perspective view of the unit block body seen from the bottom, Figures 5 and 6 are plan views showing modified examples of the unit block body, and Figure 7 is the layout state of the unit block body. FIG. 8 is a vertical sectional side view showing a state in which concrete placement preparations have been completed, and FIG. 9 is a longitudinal sectional side view showing a concrete placement state. DESCRIPTION OF SYMBOLS 1... Unit block body, 2... Recessed part, 3... Joint part, 5... Uneven part, 8... Auxiliary block body, 9,
9'...Concrete panel.

Claims (1)

[Scope of Claims] 1. Concrete formwork with a masonry pattern formed on the surface of the concrete pouring side is sequentially temporarily attached to one of the front and back concrete panels arranged at intervals, and multiple The first step is to install two concrete formworks in series in the horizontal direction.
After creating a gap for concrete pouring between the above-mentioned concrete formwork and arranging the other concrete panel, a second step of pouring concrete into the gap, and after the concrete has hardened. In the concrete construction method using masonry formwork, which includes a third step of dismantling concrete panels and concrete formwork to form a masonry pattern on the concrete surface, concrete pouring is used as the main formwork for concrete. A formwork made of synthetic resin foam that has recesses and joints for forming a masonry pattern on the installation side surface, and grooves formed in positions corresponding to the joints on the back side, and is formed in multiple stages. A unit block body has N (N is an integer) rectangular patterns and N-1 rectangular patterns in each row, and the arrangement of the rectangular patterns is symmetrical, and uneven parts for combination are provided on both sides. use,
A concrete construction method using a masonry form, characterized in that the first step is performed by combining the uneven portions of the unit block body with the uneven portions of another unit block body. 2 The first step is to form a substantially rectangular formwork that is fitted into the recess of the unit block body to form a linear side surface of the unit block body at the time of allocation as a secondary concrete formwork for the main concrete formwork. A concrete construction method using a masonry form according to claim 1, which includes the step of using an auxiliary block body and combining the auxiliary block body with the unit block body.