JPH05214733A - Concrete foundation construction method and jig used therefor - Google Patents

Abstract

PURPOSE:To extensively shorten work period as well as to easily assemble a formwork. CONSTITUTION:An engagement part 37 to insert and support the lower end part of a formwork 42 is provided on a cross bar of a support base 31 having the cross bar 32 and a longitudinal bar 33. A plural number of jigs 30 are arranged with specified intervals in a pit excavated hole by using the jigs 30 installed with a support plate 45 in parallel with the cross bar 32 on the longitudinal bar 33 and inserting the longitudinal bar 33 of the jigs 30 into the pit excavated hole until the support plate 45 makes contact with the bottom surface of the pit excavated hole. Thereafter, the formwork 42 is suspended between the jigs 30 arranged with the formwork 42, the lower end part of the formwork 42 is inserted in the engagement part 37 of the corresponding jig 30 and fixed, and concrete is cast in the lower part of the cross bar 32 of the jigs 30 and the formwork 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete foundation construction method for forming a foundation of a building and a jig used therefor.

[0002]

2. Description of the Related Art Generally, a foundation or a retaining wall of a building is formed by assembling a formwork and pouring concrete into the formwork. FIG. 4 is an explanatory view showing a conventional general construction method for forming a fuchin and a cloth foundation of a building. Conventionally, in order to form the above-mentioned foundation, first, the formwork 1 for Fuchin 10
Assemble pieces 2 and 12 on green stone 14. Both molds 12, 12
Reinforcing bars are appropriately arranged between them. Further, the nails 20 and 20 for post-construction are fixed to the reinforcing bar by using wire or the like. Then, concrete is poured between the two molds 12, 12 to first form the fuchin 10. Then Fuchin 1
The molds 18, 18 for the cloth foundation 16 are erected on the top of the 0. The molds 18, 18 are fixed on the footin 10 by means of nails 20, 20. Reinforcing bars are also incorporated into the molds 18, 18 as appropriate. Reference numeral 22 is a separator for holding the molds 18, 18 at constant intervals. Both formwork 18, 1
8 is reinforced by piles 24, 24. And formwork 1
Concrete is poured into 8 and 18 to form the cloth foundation 16. After the foundation is formed, the molds 12 and 18 are removed, and the nail 20 is pulled out to complete the work.

[0003]

However, the above-mentioned conventional construction methods have the following problems. That is, first, the assembling of the two molds 12, 12 and the molds 18, 18 is extremely troublesome and requires a lot of time and labor for assembling. Further, the concrete for Fuchin 10 is poured, and after a certain curing period, the molds 18 and 18 are assembled to form the cloth foundation 16, so that the Fuchin 10 and the cloth foundation 16 are separately formed. Therefore, there is a problem that the construction period becomes extremely long. Fuchin 10 as described above
Since the cloth foundation 16 and the cloth foundation 16 are separately formed, the futin 10
There is a possibility that the joint between the base and the cloth foundation 16 is not perfect, and a crack or the like may occur at the joint.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to assemble a formwork easily and to reduce the construction period significantly. And to provide a jig used for this.

[0005]

The present invention has the following constitution in order to achieve the above object. That is, a fitting portion capable of fitting and supporting the lower end of the mold is provided on the horizontal bar of the support base having the horizontal bar and the vertical bar, and the support plate is mounted on the vertical bar in parallel with the horizontal bar. Using the jig, insert the vertical bar of the jig into the root hole until the support plate comes into contact with the bottom surface of the root hole. , The mold is passed between the arranged jigs, and the lower end of the mold is fitted and fixed to the fitting portion of the corresponding jig,
The feature is that concrete is poured under the horizontal bar of the jig and in the formwork. Further, in the jig according to the present invention, a fitting portion capable of fitting and supporting the lower end portion of the form is provided on the horizontal bar of the support base having the horizontal bar and the vertical bar, and the horizontal bar is provided on the vertical bar. The feature is that the support plates are attached in parallel. It is preferable that the fitting portion is movably fixed on the horizontal bar. Further, it is preferable that the support plate is movably fixed on a vertical bar.

[0006]

The operation will be described with reference to FIG. First, a plurality of jigs 30 are arranged in the root hole at predetermined intervals (for example, 1 m). The jig 30 is erected in the root hole with the support plate 45 abutting against the surface of the ground stone and being supported with a predetermined distance maintained between the horizontal bar 32 and the surface of the ground stone. The side plate 5 is inserted between the jigs 30 arranged at a predetermined interval.
0 is fixed to the support piece 39 by the clip 52. After arranging the jig 30 in the root hole as described above, the molds 42 are fitted to both fitting portions 37 in a state of being passed over the plurality of jigs 30 so that the molds 42 are spaced at regular intervals. It can be fixed by standing on the jig 30 while holding. The lower end of the mold 42 is fitted into the fitting portion 37 and fixed, but both molds 42
By connecting the upper ends of the molds with a known connector (not shown), it is possible to fix the upper and lower sides of the mold 42 while maintaining a constant gap. After assembling the molds as described above, both molds 4
Pour concrete between the two. As a result, the concrete flows down and is filled into the space for Fuchin surrounded by the side plates 45 on the ground stone and the space surrounded by both the molds 42. After a certain curing period has passed, the formin 42 and the side plate 45 can be removed to form a foundation in which the fuchin and the cloth foundation are integrated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a jig 30. Reference numeral 31 is a support base, and the horizontal bar 32 and the vertical bar 33 form a T shape. Reference numeral 34 is a reinforcing plate for attaching the horizontal bar 32 and the vertical bar 33.
A lateral groove 35 is provided in the center of the front surface and the back surface of the horizontal bar 32. A vertical groove 36 is also provided in the center of the front and back surfaces of the vertical bar 33. The vertical groove 36 is set to be shallower toward the upper part of the vertical bar 33. A fitting portion 37 is provided movably along the horizontal bar 32 on the horizontal bar 32 extending laterally from the upper end of the vertical bar 33. Fitting part 37
Has a slide body 38 with which the horizontal bar 32 can slide and slide on the horizontal bar 32, and support pieces 39, 40 projecting upward at both ends of the upper surface of the slide body 38. A fixing screw 41 is screwed into the slide body 38, and the tip of the screw is fastened to the bottom surface of the lateral groove 35.
7 can be fixed at a predetermined position on the horizontal bar 32.

The space between the support pieces 39 and 40 is determined by the template 43.
(FIG. 2) and the thickness of the reinforcing frame 44 fixed to the periphery thereof are equal to the sum. The mold plate 43 and the reinforcing frame 44 form the mold frame 42. Therefore, the lower end portion of the form 42 can be fixed by being sandwiched between the support pieces 39 and 40. Reference numeral 45 denotes a support plate, and the vertical bar 33 is inserted through a slide body 46 attached to the center of the support plate, and is provided movably on the vertical bar 33. A fixing screw 47 is screwed into the slide body 46, and the tip end of the screw is fastened to the bottom surface of the vertical groove 36 so as to be fixed at a predetermined position on the vertical bar 33. 50 is a side plate for Fuchin, and is shown in FIG.
As is clear from the above, an L-shaped cross section is formed, and a fixing piece 51 projecting in the opposite direction is formed on one end side thereof, and the fixing piece 51 and the supporting piece 39 on the outer side of the fitting portion 37 are clipped by a clip 52. It is attached to the jig 30 by sandwiching it with.

The jig 30 is constructed as described above.
Next, a method of forming a foundation using the jig 30 will be described. First of all, dig a root hole in the ground and put in some stones to make adjustments. Next, a plurality of the jigs 30 are arranged on the green stone at predetermined intervals (for example, 1 m). That is, the jig 30
The vertical bar 33 is inserted into the bottom of the root hole until the lower surface of the support plate 45 contacts the surface of the ground stone. This allows
The jig 30 is erected in the root hole with the support plate 45 abutting against the surface of the ground stone and being supported with a predetermined distance maintained between the horizontal bar 32 and the surface of the ground stone. The distance between the horizontal bar 32 and the surface of the ground stone can be adjusted to an arbitrary distance by moving the support plate 45 on the vertical bar 33. In addition,
Since the vertical groove 36 provided in the vertical bar 33 is formed so as to become shallower toward the upper part of the vertical bar 33, once the fixing screw 47 is tightened, the support plate 45 cannot move in the direction of approaching the horizontal bar 32. When the jig 30 is inserted into the root hole, the support plate 45 is inserted until it comes into contact with the ground stone, so that the jig cannot be pushed even if it is pushed further, and the distance between the horizontal bar 32 and the support plate 45 is always kept constant. You can do it.

The side plates 50 are fixed to the support pieces 39 by clips 52 by inserting the jigs 30 between the jigs 30 arranged at a predetermined interval. This will create a space for Fuchin. Reinforcing bars should be installed in advance in this space. Jig 3 as above
After arranging 0 in the root hole, the mold 42 is fitted to both the fitting portions 37 in a state of being passed over a plurality of jigs 30, so that the mold 42 can be fixed in a state in which a fixed interval is maintained. Ingredient 3
It can be fixed at 0. The lower end of the mold 42 is fitted and fixed to the fitting portion 37. By connecting the upper ends of both molds 42 by a known connecting tool (not shown), the upper and lower sides of the mold 42 are connected. Can be fixed while maintaining a constant interval.
Further, if necessary, the intervals between the molds may be maintained by the separators described above, or the molds may be reinforced by the piles. Reinforcing bars are also appropriately arranged between both molds 42. After the molds are assembled as described above, concrete is poured between the molds 42. As a result, the concrete flows down and is filled into the space for Fuchin surrounded by the side plates 45 on the ground stone and the space surrounded by both the molds 42. After a certain curing period has passed, the formin 42 and the side plate 45 can be removed to form a foundation in which the fuchin and the cloth foundation are integrated. The jig 30 is left as it is in the concrete.

In the above embodiment, the fitting portion 37 is provided so as to be movable on the horizontal rod 32, but it may be fixed on the horizontal rod so as to be immovable when a foundation having a certain thickness is obtained. Similarly support plate 4
5 may also be fixedly provided on the vertical bar 33. Further, the lateral groove 35 and the vertical groove 36 do not necessarily have to be provided. The side plate 50 does not necessarily have to be used when the viscosity of the concrete is relatively high and the concrete does not easily flow to the side. Further, in the above embodiment, the supporting base 31 is provided in a T shape, and the two fitting portions 37 are arranged on the horizontal bar 32 thereof.
One fitting part is provided so that only one row of the formwork is supported, the other side is in the state of the earth wall, and a retaining wall into which concrete is poured is formed between the earth wall and the formwork. Of course, it can also be used.

[0012]

According to the present invention, as described above, the jig is inserted into the root excavation hole until the supporting plate comes into contact with the ground stone or the like,
The mold is fitted into the fitting part of the horizontal bar of the jig to support the mold, so that the mold can be easily assembled and the labor can be greatly reduced. Concrete can be simultaneously poured into the space and the space between the horizontal bar and the support plate to form the footin and the cloth foundation at the same time, which effectively prevents cracks and the like, and has the effect of significantly shortening the construction period.

[Brief description of drawings]

FIG. 1 is a front view of a jig.

FIG. 2 is a cross-sectional view of a foundation formed using a jig.

FIG. 3 is an explanatory view showing a mounted state of a Fuchin side plate.

FIG. 4 is an explanatory view showing a conventional construction method.

[Explanation of reference numerals] 30 jig 31 support base 32 horizontal bar 33 vertical bar 37 fitting part 39 support piece 40 support piece 41 fixing screw 42 form frame 45 support plate 47 fixing screw

Claims (4)

[Claims] 1. A fitting portion for fitting and supporting a lower end portion of a form is provided on the horizontal bar of a support base having a horizontal bar and a vertical bar,
Using a jig in which a support plate is attached in parallel with the horizontal bar on the vertical bar, so that the vertical bar of the jig is inserted into the root hole until the support plate contacts the bottom surface of the root hole, A plurality of the jigs are arranged at predetermined intervals in the root hole, the mold is passed between the arranged jigs, and the lower end of the mold is fitted and fixed in the fitting portion of the corresponding jig. A concrete foundation method characterized by pouring concrete under the horizontal bar of the jig and into the formwork. 2. A fitting portion for fitting and supporting a lower end portion of a form is provided on the horizontal bar of a support base having a horizontal bar and a vertical bar,
A jig for concrete foundation construction, wherein a supporting plate is attached on the vertical bar in parallel with the horizontal bar. 3. The jig for concrete foundation construction according to claim 2, wherein the fitting portion is movably fixed on a horizontal bar. 4. The jig for concrete foundation construction according to claim 2, wherein the support plate is movably fixed on a vertical bar.