JPH0447031A - Constituting method for concrete wall where bottom wall part and vertical wall part are continuous in l-shape - Google Patents

Abstract

PURPOSE:To improve strength of a L-shape angular part by making a front side vertical wall and a rear side vertical wall continue with connecting pieces, and using blocks provided with opening for circulating ready-mixed concrete for a part of one vertical wall to form a L-shape wall. CONSTITUTION:A front side vertical wall 11 and a rear side vertical wall 12 both of which are made of concrete are connected with connecting pieces 13 while slit like openings 14 are provided in the lateral width direction of the front side vertical wall 11 to form blocks 10. Next, blocks 10 are continuously placed side by side in a lateral row, and set up so as to turn a side face of a forming side of the opening 14 to the bottom wall part forming side. Reinforcing bars are assembled through respective openings 14 of the block row 10A, a formwork 4 for forming the bottom wall part and a formwork 5 for forming the vertical wall part are assembled, and ready-mixed concrete is filled. It is thereby possible to form the surface of the L-shape retaining wall finely.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of constructing a concrete wall in which a bottom wall portion and a vertical wall portion are continuous in an L shape.

(Prior art and its problems) For example, when constructing a concrete wall in which the bottom wall part and the vertical wall part are continuous in an L shape, such as an L-shaped retaining wall, conventionally, the fifth
As shown in the figure, first, after the bottom wall 102 is poured and the concrete hardens, a formwork for forming a vertical wall is assembled on top of the bottom wall 102, and ready-mixed concrete is poured into the formwork. The L-shaped retaining wall was constructed by adding a vertical wall part 103 on top of the bottom wall part 102.

However, in the conventional rectangular retaining wall composition method shown in Figure 5,
The bottom wall part 102 and the vertical wall part 103 must be cast separately, which makes concrete casting work twice and takes time to wait for the bottom wall part 102 to harden before pouring the vertical wall part 103. Moreover, when adding the vertical wall part 103 to the bottom wall part 102, it is easy for dirt to get stuck in the added part A, or even if the dirt has been thoroughly removed, the once hardened concrete (102 ) When adding new concrete (103) to the concrete (103), there was a problem in that the adhesive strength between the two was weaker than when it was poured all together.

In addition, when constructing an L-shaped swing wall in this way, for example, as shown in FIG. It may be possible to do this by filling fresh concrete 109 from the top, but in the case of this Fig. 6, the formwork 10 for forming the bottom wall is
Since the upper surface side of 4 is also closed, the density of concrete filling into the formwork 1o4 for forming the bottom wall portion 102 is reduced, and in particular, the upper surface portion of the bottom wall portion 102 is not filled with concrete. Part B may occur. Also, for example, the seventh
As shown in the figure, it is also possible to fill the entire formwork with ready-mixed concrete 109 while leaving the formwork 105 for forming the vertical wall as it is and leaving the top side of the formwork 104 for forming the bottom wall open. However, in the case of FIG. 7, the weight of the ready-mixed concrete 109 filled in the formwork 105 for forming the vertical wall section presses the ready-mixed concrete in the bottom wall section formwork 104, causing the bottom wall section 102 to be pressed. The upper surface becomes raised as shown by reference numeral 102a. In this way, Figure 6 or 7
According to the method of constructing each of the helical wave walls shown in the figure, the bottom wall 102 and the vertical wall 103 can be formed at the same time, and the strength of the continuous part between the bottom wall and the vertical wall can be strengthened by integral casting. Although this can be done, both of the construction methods shown in FIGS. 6 and 7 have the problem that the top surface of the bottom wall portion 102 that is formed is not neatly aligned.

(Object of the Invention) In view of the problems of the conventional method of constructing a rectangular wave wall as described above, the present invention has been developed so that the bottom wall portion and the vertical wall portion can be integrally formed. The purpose of the present invention is to propose a method for constructing a continuous L-shaped concrete wall, which enables the surface of the L-shaped shake wall to be formed neatly even if the walls are cast in one piece.

(Means for Solving the Problems) The present invention provides a method for constructing a concrete wall in which a bottom wall portion and a vertical wall portion are continuous in an L shape, in which a front vertical wall and a rear vertical wall are spaced apart from each other. A block in which the front vertical wall and the rear vertical wall are connected by a connecting piece, and an opening through which fresh concrete can flow is formed in a part of either the front vertical wall or the rear vertical wall. When constructing a concrete wall in which the bottom wall part and the vertical wall part are continuous in an L shape using A formwork for forming a bottom wall portion, which is arranged horizontally in a row and whose upper surface side is open at the front portion of the opening forming side of the block row, and the mold for forming the bottom wall portion.

The present invention is characterized in that after each formwork for forming a vertical wall is assembled on top of each row, ready-mixed concrete is filled into each formwork.

(Function) According to the method for constructing an L-shaped concrete wall of the present invention, a block having an opening formed in the corner of the entire formwork in which the L-shaped concrete wall is to be constructed is formed so that the opening of the block forms the bottom wall. Because they are placed side by side in a horizontal line, facing to the side, when filling fresh concrete into the round frame, the formwork for the bottom wall and the formwork for the vertical wall are filled with fresh concrete. Each fresh concrete is different from each other.

It becomes continuous through the opening. In addition, when fresh concrete is filled into an L-shaped formwork in which the formwork for the bottom wall and the formwork for the vertical wall are connected, the converted concrete in the formwork for the vertical wall will move downward due to its weight. The pressure increases, but
Since the opening for communication of fresh concrete formed in the block is formed in a part of the vertical wall, the part where the opening is not formed in the vertical wall on the side where the opening is formed exerts a damming effect, and the formwork on the bottom wall side When the inside is filled with fresh concrete, the ready-mixed concrete in the formwork on the vertical wall side may displace the ready-mixed concrete in the formwork on the bottom wall side and flow into the formwork on the bottom wall side. It disappears. Further, according to the present invention, when filling the L-shaped formwork with ready-mixed concrete, the ready-mixed concrete is poured from both the upper part of the vertical wall side formwork and the upper open part of the bottom wall side formwork. I can do it. Also, depending on the site situation, when filling ready-mixed concrete into the formwork on the bottom wall side, it may not be possible to pour the ready-mixed concrete from the open part at the top. It is also possible to fill the bottom wall side formwork with fresh concrete by pouring fresh concrete only from the upper part of the side formwork. In other words, if ready-mixed concrete is poured into the vertical wall-side formwork without any fresh concrete in the bottom wall-side formwork, the ready-mixed concrete accumulated at the bottom of the vertical wall-side formwork will fill each opening. This can be done by sequentially leveling the fresh concrete that has flowed into the bottom wall side formwork over the entire area of the bottom wall side formwork.

(Effects of the Invention) According to the present invention, by using blocks with openings, only one concrete pouring operation is required when constructing a concrete wall in which the bottom wall part and the vertical wall part are continuous in an L shape. You can do it with Further, the concrete wall of the bottom wall portion and the concrete wall of the vertical wall portion can be connected seamlessly through each opening, and the strength of the L-shaped corner portion can be improved.

In addition, since the bottom wall side formwork is open at the top, it is possible to reliably fill the fresh concrete to a predetermined height within the bottom wall side formwork. Even if the top of the ivy is open, the bottom wall side formwork and the vertical wall side formwork are connected through an opening formed in a part of the vertical wall of the ivy, so the vertical wall The pressure of the fresh concrete filled in the side formwork is dammed by the wall outside the opening, and the ready-mixed concrete in the bottom wall side formwork is no longer pushed up, thus reducing the bottom wall of the constructed concrete wall. This has the effect of allowing the top surface of the part to be finished neatly.

(Example) The present invention will be described in detail with reference to FIGS. 1 to 4. In the concrete wall construction method of this example, a predetermined number of blocks 10 as shown in FIG. 1 are used. .

The block 10 in FIG. 1 is made of concrete, and has a front vertical wall 11 and a rear vertical wall 12 connected to each other with a predetermined distance A between them by a connecting piece 13.13. A slit-shaped opening 14 having a predetermined width B is formed at an intermediate position in the width direction. The embodiment of this FIG.

10, the width C of the front vertical wall 11 in which the opening 14 is formed
is shorter than the width of the rear vertical wall 12< (C:D=34)
, and the width B of the opening 14 and the divided front wall 1 divided on both sides thereof.
The valley width E of 1A and IIA is the same length, and each is 1/4 the width of the rear vertical wall 12. Front vertical wall 1
The left and right side edges 11g and 11a of 1 are the rear vertical wall 12.
The blocks 10 and 10 are located inward from each side edge 12a, 12a by a length of 1/2 of the width B of the frontage 14, respectively, and the blocks 10 and 10 are arranged side by side in a continuous manner in the horizontal direction, as shown in FIG. Sometimes the opposite side edges 11 of each block 10.10
An opening 14A having the same width as the width B of the opening 14 is formed between a and lla.

In the block 10 of the embodiment shown in FIG. 1, the opening 14 is formed in the shape of a slit extending over the entire vertical width of the front vertical wall 11; A window hole may be formed in the vertical wall 11.

Next, to explain the method of constructing a concrete wall using the block 10 shown in FIG. 1, first, place the block 10 shown in FIG.
As shown in FIG. 2, the required number of 0's are consecutively arranged in a row horizontally. At that time, each block +0.10... is installed so that the side surface on the side where the opening 14 is formed faces the side where the bottom wall portion is formed. A plurality of openings 14, 14A are formed at equal intervals on the side surface of the block row 10A consisting of each block 10, 10, on the side where the bottom wall portion is formed.

In addition, on both the left and right sides of each opening 14.14A, there is a divided front wall 1.
1A and IIA exist. Next, as shown in FIG. 3, reinforcing reinforcing bars 7 are installed through each opening 14 of the block row 10A, and a bottom wall side formwork with an open top side is installed in the side section forming the opening 14 of the block row 10A. Formwork 4 and
Formworks 5 for forming vertical walls are assembled above each 1° block row. In this state, the inside of the formwork 4 of the bottom wall side formwork and the formwork 5 for forming the vertical wall are in the block row lO
A through each opening 14.14A.

Then, fresh concrete is filled into this L-shaped molding frame Inside the formwork 4 is an upper open portion 4 of the bottom wall side formwork 4.
Fresh concrete 9a can be poured directly from 1. As shown in FIG. 4, when the bottom wall side formwork 4 and the vertical wall side formwork 5 are filled with fresh concrete 9a, 9b, respectively, the ready-mixed concrete 9a in the bottom wall side formwork 4 is filled with fresh concrete 9a, 9b. and the ready-mixed concrete 9b in the vertical wall side formwork 5 are continuous with each other via each opening 14.14A of the row 10A. In addition, fresh concrete is placed inside the vertical wall side formwork 5.
) 9b is filled, the gravity of the fresh concrete 9b applies pressure to its lower part, but the opening 14.1-
The divided front walls 11A and IIA on both the left and right sides of 4A come to act as a dam. When the ready-mixed concrete 9a is filled in the bottom wall-side formwork 4, the ready-mixed concrete b in the vertical wall-side formwork 5 displaces the ready-mixed concrete 98 in the bottom wall-side formwork 4. The fresh concrete 9a does not flow into the bottom wall side formwork 4 until it reaches the bottom wall, and the upper surface of the bottom wall side fresh concrete 9a is not pushed up.

Thus, according to this concrete wall construction method,
The bottom wall portion 2 and the vertical wall portion 3 form each opening 1 of the block row 10A.
4.14A, which is continuous with each other, thereby increasing the strength of the entire L-shaped concrete wall (especially the strength of the corners)
becomes larger, and even if the bottom wall 2 and the vertical wall 3 are integrally formed, the top surface of the bottom wall 2 will not be pushed up or there will be no concrete-filled areas. The top surface can be shaped neatly.

Depending on the concrete wall forming site, there may be cases where it is not possible to pour the fresh concrete 9a directly into the bottom wall side formwork 4, but in that case, the ready-mixed concrete may be poured from the top of the vertical wall side formwork 5. The bottom wall side formwork 4 can be filled with ready-mixed concrete just by this method. That is, when the bottom wall side formwork 4 is not filled with fresh concrete,
When fresh concrete is poured into the vertical wall side formwork 5, the fresh concrete accumulated at the bottom of the vertical wall side formwork 5 overflows into the bottom wall side formwork 4 through each opening 14, 14A due to its gravity. Then, the ready-mixed concrete overflowing into the bottom wall side formwork 4 is filled into the bottom wall side formwork 4 by leveling it over the entire area of the bottom wall side formwork 4. I can do it.

After the concrete in the L-shaped molding frame X has solidified, the molding frame X is dismantled to complete the construction of the L-shaped concrete wall.

The size and shape of the fresh concrete distribution opening 14 (14A) formed in the block 10 will vary depending on the L to be constructed.
The design can be changed as appropriate depending on the structure of the shaped concrete wall 1 (thickness, height, etc. of the vertical wall part). The design is such that the fresh concrete in the bottom wall side formwork 4 is not pushed up by concrete pressure.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a block used in the method for constructing an L-shaped concrete wall according to an embodiment of the present invention, and Figs. 2 to 4 respectively show an L-shaped concrete wall according to an embodiment of the present invention. Figures 5 to 7 are explanatory views of the conventional concrete wall construction method. 1...L-shaped concrete wall 2...Bottom wall 3...Vertical wall 4...Bottom wall side formwork 5...Vertical wall side Formwork 10...Professional 10A...Block row 11...Front vertical wall 11A...Divided front wall 12...Rear vertical wall 13...Connecting pieces 14, 14A ...Opening diagram 5

Claims (1)

[Claims] 1. The front vertical wall (11) and the rear vertical wall (12) are spaced apart from each other.
are connected by a connecting piece (13), and the front vertical wall (11
) and the rear vertical wall (12), a block (10) is used in which an opening (14) through which fresh concrete can flow is formed in a part of either the vertical wall (12), and Wall part (3
) are connected in an L-shape, a predetermined number of the blocks (10, 10, etc.) are arranged so that the side surface of each block on the side where the opening (14) is formed is the bottom wall part (2).
) A mold for forming a bottom wall portion (4) which is arranged horizontally in a line facing the formation side, and has an opening (14) in the block row (10A) and an upper surface side open at the front of the formation side, and the block. Column (
A bottom wall portion characterized in that after each formwork (5) for forming a vertical wall portion is assembled on the upper part of 10A), ready-mixed concrete is filled into each formwork (4, 5). A method of constructing a concrete wall with a continuous L-shaped vertical wall section.