JP2552860B2 - Basement method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a basement construction method.

2. Description of the Related Art Conventionally, in the construction of a basement, a method of digging a ground to be a basement space, thereafter setting a formwork in the basement space, placing concrete, and constructing a wall body is generally performed. Have been. In this case, in order to prevent the danger of the surrounding of the excavated ground collapsing, it is necessary to excavate the surrounding wall surface at an inclined angle at a predetermined angle. However, this requires a larger site, and instead of excavating the wall around the basement by inclining it, there is a method of applying so-called mountain retaining. In this case, the mountain retaining is required. Must be constructed,
There is a drawback that it requires much labor for construction and also requires material cost.

As a method to eliminate such defects, using a conventional PC board (precast concrete board), without excavating the basement space in advance as described above, excavating a groove only in the part that will be the basement wall, and going into this groove There is a method of constructing a wall of a basement by inserting the PC board and then excavating the ground surrounded by the wall (for example, Japanese Patent Publication No. 60-24).
(See Japanese Patent No. 249).

Further, in the method of placing concrete on site without using a PC board, for example, as described in JP-A-60-13124, along the peripheral shape of the basement to be constructed, this A part of the soil is hardened with a soil hardening agent to form a frame wall, this frame wall is used as an outer formwork, and another formwork is installed inside it, and concrete is placed between the two to form a basement. The construction method of constructing the wall is considered.

Problems to be Solved by the Invention In the above conventional construction method, in the construction method using a PC board, there is an advantage that this PC board may be manufactured in advance in a factory and installed on the site, but on the other hand, this PC board is Since an expensive mold is required to make the mold, and such a mold cannot be easily made, it has a drawback that it cannot sufficiently cope with the complicated shape of the basement. In particular, this type of basement differs depending on the site conditions, etc., and most of them are made-to-order, so they are not suitable for the PC board construction method that requires standardization of panels.

On the other hand, in the method of hardening the ground with the soil hardening agent as described above, in order to surely invade the soil hardening agent to the required depth and harden it, in the end, the soil dug out of the trench is mixed with the hardening agent. Therefore, it is necessary to refill the groove again and the like, which also involves the same complexity of work as the above-mentioned mountain retaining, and there is a drawback that the construction period and the cost cannot be reduced. Further, the frame wall only has a function as an outer mold, and the inner mold still has to be assembled on site.

This invention eliminates the above-mentioned conventional drawbacks, and is a step in which it is not necessary to perform mountain fastening as described above, and further, there is no need to assemble a concrete pouring formwork on site, and further,
The purpose of the present invention is to provide a basement construction method that can cope with various basement shapes.

Means for Solving the Problems In order to achieve the above object, according to the present invention, a form concrete block (4) is assembled into a panel shape having a predetermined shape and can be transported as a unit and has a hollow portion. (13) is formed, this panel body (13) is inserted into the groove (31) excavated along the basement wall, and then concrete is placed in the hollow part (29) to construct the basement wall. Then
Then, the ground surrounded by the basement wall is excavated to form a basement space.

Action According to the present invention, the small formwork concrete block (4) serves as one basic unit. Therefore, by sequentially combining the basic units, it is possible to form panels of various shapes without using a mold. can do. Further, since the concrete is placed in the panel body (13) formed by the formwork concrete block (4), the formwork is unnecessary.

Embodiment FIGS. 2 to 5 show a method for manufacturing a panel body according to the present invention.

First, as shown in FIG. 2, a known self-leveling agent (2) is poured into a rectangular frame body (1) and cured to form a horizontal and smooth workbench (3). That is, by using the self-leveling agent (2), a naturally smooth and horizontal work surface can be obtained.

Then, as shown in FIG. 3, one of the joints between the formwork concrete blocks (4), (4) ... Is placed on the workbench (3). The joint (5) (5) runs straight, but the other joint (6)
(6) is arranged side by side at a so-called break joint, which forms a break joint that does not pass through. As shown in FIG. 5, the formwork concrete block (4) includes a pair of face shells (7) and (7) and a pair of connecting portions (8) and (8).
Thus, they are integrally connected so as to create a space between them.

Then, after arranging the formwork concrete blocks (4) (4) so as to have a predetermined panel shape on the workbench (3) as described above, as shown in FIG. Male screw (9) (9) at both ends in the same direction as the joint (6)
The nuts (11) and (11) are screwed into the male screw portions (9) and (9) at both ends to penetrate and insert the steel bar (10) for tightening provided with the nut. At that time, the plates (12) and (12) are applied to the ends of the formwork concrete blocks (4) and (4) at both ends in the inserting direction of the steel rod (10), and the steel rod (10) is attached to this plate ( Insert it into (12) (12) and tighten the nuts (11) (11) from the outside. A plurality of such steel rods (10) are tightened at appropriate places in the left-right direction. After manufacturing one panel body (13) as described above, further formwork concrete blocks (4), (4)... Are similarly arranged on the upper part of the panel body (13) to form a second panel. The body (13) is manufactured, and the panel body (13) is manufactured in a laminated state while the formwork concrete blocks (4) and (4) are sequentially arranged on the manufactured panel body (13).

The panel bodies (13) (13) manufactured in this way are carried into the site and installed. At this time, each form concrete block (4) is formed by a steel rod (10).
(4) are almost integrally tied, so that they can be carried in and lifted up as an integrated panel. In this case, as described above, since each of the formwork concrete blocks (4), (4),... Is arranged in a broken joint shape, the steel rod (10) is inserted in the direction of the broken joint (6). It is not necessary to tie from the direction perpendicular to this steel bar (10). That is, when the form concrete blocks (4), (4)... Are arranged on the potato joints, it is necessary to bind the form concrete blocks (4), (4). There is no.

The panel body (13) manufactured in the above steps up to FIG. 4 and FIG. 5 is a unit obtained by dividing the length in the direction of one wall into basic units. As shown in FIG. 1, this is connected in a size that matches the entire length in the direction of one wall. Explaining the connection method, first, in the formwork concrete blocks (4) (4) located on the upper end side of the wall body, holes (15) (15) in the wall thickness direction are prepared in advance.
Is opened in the face shell (7), and the screw rod (17) of the tightening fitting (16) is inserted into the holes (15) (15). Then, on both sides of the end portion of the screw rod (17), upper and lower two-stage steel pipes and other connecting rods (18) (18) are arranged so as to straddle each panel body (13) (13), Sticks (17)
The pressers (19) (19) attached to both ends of the panel are brought into contact with the connecting rod (18), and the nuts (20) (20) attached to the outside thereof are tightened to form the panel bodies (13).
The upper ends of (13) are integrally connected to each other. Of the connecting rods (18) (18) outside the wall, the connecting rod (18) on the upper side in FIG. 1 is projected outward from the end of the panel body (13). Is for connecting the panel body (13) thus connected to the panel body in a direction perpendicular to the panel body, and in this case, the connecting rod (18) below the panel body side of the other party. Are projected so that they are tightly connected to each other and connected.

Next, form plate concrete blocks (4) (4) located at the lower end of the panel body (13) are provided with the plate (12).
On the lower side of the, straddle each panel body (13) (13),
The wall leg connection (21) made of H-shaped steel is arranged such that the wall (22) portion on one side of the web is fitted to the lower end of the panel body (13). At that time, as shown in FIG. 7, a bolt hole (23) is previously formed in the wall leg connection (21), and a steel rod (projected from the plate (12) into the bolt hole (23) ( 10) While projecting the end part, screw another nut (25) into the steel rod (10) through one or more washers (24) to connect the wall leg connection (2).
1) Attach.

Next, the installation of the panel body (13) and the concrete pouring method will be described. First, in parallel with or before or after the connection of the panel bodies (13) and (13) on site, as shown in FIG. Drill a ditch (31) along the wall of the basement. And
Panel bodies (13) (13) connected as described above ...
As shown in FIG. 1, hoisting it via the beam (30),
Install in this groove (31). In this way, the panel bodies (13) (13) are installed so as to form the walls around each of them, and the panel bodies (13) (13) are connected to each other at the corners thereof, and also into the hollow portion (29) of each panel body (13) After applying the necessary bar arrangement, the 10th
Concrete is poured into the hollow part (29) as shown in the figure. Then, as shown in FIG. 11, a concrete wall beam (34) is applied to the upper end of the wall body (32) to integrate them. The wall beam (34) is constructed by a wet construction method by casting concrete on site or by using a preformed PC material. Thereafter, as shown in FIG. 12, the space inside the grooves (31) on both sides of the constructed wall bodies (32) (32) is backfilled.

Then, as shown in FIG. 13, the excavator (35) is driven into the ground of the basement space part surrounded by the wall body (32), and this part is excavated to form the basement space. At that time, part of the excavated soil will be used as embankment outside the wall (32), and the rest will be discharged. Furthermore, after the paving stones (36) are constructed on the bottom of the excavated basement space, the bottom concrete (37) is cast on them.

EFFECTS OF THE INVENTION As described above, according to the present invention, a form concrete block is placed in an excavated groove, concrete is placed, and then the ground of the basement part surrounded by it is excavated. It is not necessary to construct the concrete frame, and since concrete is placed in the concrete block of the formwork in this way to construct an integral wall body, the construction of the temporary frame is completely unnecessary. In addition, since the formwork concrete block is placed in a panel in advance, the construction work for that is easy, and since a molding die for such panelization is not required, it is lower than that using a PC board. It can be manufactured at low cost, and by increasing or decreasing the number of formwork concrete blocks that are the basic units, various panels of different sizes and shapes can be manufactured arbitrarily, and it is possible to respond to the shape of various basements at low cost. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which panel bodies are connected to each other and stacked, FIG. 2 is a perspective view of a workbench for manufacturing the panel bodies, and FIG. 3 is an arrangement of formwork concrete blocks. FIG. 4 is a perspective view showing an intermediate state, FIG. 4 is a perspective view of a panel body manufactured on a workbench, FIG. 5 is a longitudinal sectional view of the panel body, and FIG. FIG. 7 is a vertical cross-sectional view of the main part in the state of being closed, FIG.
FIG. 14 to FIG. 14 are longitudinal sectional views showing work steps from excavation of a groove on site to placing concrete at the bottom. (4) …… Formwork concrete block, (6) …… Joint, (7) …… Face shell, (10) …… Steel rod, (13) …… Panel body, (29) …… Hollow part, ( 31) …… Groove, (32) …… Wall.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Ihara 6-2-27 Nakanoshima, Kita-ku, Osaka Sekisui House Co., Ltd. (72) Yuzo Suzuki 6-2-27 Nakanoshima, Kita-ku, Osaka Sekisui House Co., Ltd. (56) Reference JP-A-52-130109 (JP, A) JP-A-62-111028 (JP, A)

Claims (1)

(57) [Claims] Claim: What is claimed is: 1. A form concrete block is assembled into a panel of a predetermined shape and can be transported as a unit, and a panel body having a hollow portion is formed, and this panel body is excavated along a basement wall in a groove. After that, the basement wall is constructed by pouring concrete into the hollow portion to construct a basement wall, and then the ground surrounded by the basement wall is excavated to form a basement space.