JP2539736B2 - Fabric foundation construction method and formwork support used for it - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete cloth foundation for a house or the like, and a formwork support directly used for carrying out the method.

[0002]

BACKGROUND OF THE INVENTION A concrete fabric foundation such as a house, to applying a reverse T-shaped fabric foundation having a base portion for reinforcement to the lower end of the beam portion (footing portion) is conventionally initially to FIG as shown in 5, and drilling the ground (1) excavation groove corresponding to the shape of the house or the like to (2), laid Kuriishi (3) at the bottom thereof,
Then Da設a disposable concrete (4) from its upper, leveling its upper surface flat, et al.

After the waste concrete (4) is hardened, as shown in FIG. 6, the base portion forming frame is formed on both sides of the root cutting groove (2).
(5) (5) is erected, and ready-mixed concrete is poured into the inside to form a base portion (footing portion) (A1) of the cloth foundation (A).

After the concrete of the base portion (A1) has hardened, a pair of left and right beam forming molds (6) and (6) are erected on the concrete, and they are connected to each other by connecting means (7). And then pouring ready-mixed concrete inside it, and the beam part (A) of the cloth foundation (A).
2) is formed .

[0005] After curing of the concrete of the beam portion (A2), to remove both mold (5) (6) (base portion forming mold (5), immediately after the hardening of the concrete base section (A1) and removal sometimes be), fabric foundation consisting base portion (A1) and the beam portion and (A2) (a) is formed. The base (A1) and beam (A
Illustration and description of the reinforcing bars arranged in 2) are omitted.

[0006]

According to the conventional cloth foundation construction method as described above, the ready-mixed concrete is added to the base portion (A
1) divided into formed at the beam portion (A2) 2 times with the formation, also only <br/>, since they must be pouring at a time required for curing of the concrete of the base portion (A1) Since the concrete mixer truck has to be reciprocated twice, the cost is high, the construction period is long, and it takes a lot of time to assemble and disassemble the formwork .

In view of the above-mentioned problems of the prior art, the present invention has the following advantages:
The base portion and the beam portion, and its object is to provide a fabric foundation construction method capable of simultaneously formed easily, and a convenient formwork support for use in the practice of the method.

[0008]

In order to achieve the above object, the method of constructing a cloth foundation according to the present invention is such that a rubble stone is laid on the bottom of a root cutting groove excavated on the ground, and the root cutting groove is placed in the longitudinal direction from above. Place the waste concrete at appropriate intervals, and place a plurality of almost upward U-shaped form support materials with the bearings of the beam forming mold on the upper parts of both side pieces on the hardened waste concrete. with a longitudinal direction in the appropriate intervals kerf installed, with erecting beam portion forming mold of the pair on the bearing portions of both sides of the formwork support, both sides piece of the formwork support
The groove formed on the side edge of the is orthogonal to the beam forming mold
Fitting and supporting the horizontal reinforcing bars, and erected a pair of base part forming molds on both sides of the root cutting groove , and pouring fresh concrete between the beam part forming molds. The base portion and the beam portion are formed at the same time.

The formwork support material of the present invention used for carrying out the above method is such that the lower ends of the formwork for forming the beam part of the cloth foundation are respectively provided on the upper parts of both side pieces standing up from both ends of the horizontal lower piece. A mating bearing is formed.

[0010]

During the beam portion forming mold of a pair supported by [action] formwork support, when pouring the fresh concrete from above,
Mixed concrete passes between the formwork support from the lower end of the beam portion forming mold, spread between the base portion forming mold of the pair, and the base portion and the beam portion of the fabric foundation is simultaneously formed To be done.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The same components as those of the conventional one shown in FIGS. 5 to 7 are designated by the same reference numerals, and detailed description thereof will be omitted.

[0012] FIGS. 1 and 2 refer, describes an exemplary procedure of the construction method of the present invention. First, as in the <br/> of which is shown in Figure 5, excavating the ground (1) Excavation groove (2) in, with laying Kuriishi (3) at its bottom, roots kerf from thereabove ( 2) Abandoned concrete with an appropriate interval in the longitudinal direction
(4) was Da設, leveling its upper surface flat, et al.

Conventionally, the waste concrete (4) was cast all over the bottom of the root cutting groove (2), but in the method of the present invention, a form supporting material (11) described later is installed. You only have to put this on the part.

After the waste concrete (4) is hardened, the upper surface of the concrete is marked out to determine the center, and the form supporting material (11) is placed on the center.

The mold support (11), as shown in FIGS. 3 and 4, which was formed by bending a metal strip, a horizontal lower piece and (11a), raised from its both side ends Side piece (11b) and side piece
A support portion (11c) that extends horizontally outward from the upper end of (11b) and supports the lower end of the beam forming frame (12), and the support portion (11
It consists of a standing piece (11d) standing up from the outer end of c).

In the middle part of one side edge of both side pieces (11b), as shown in FIG.
As can be supported horizontally fitted reinforcing bars (13) of the deformed bars such as shown in, the inclined recessed groove inclined downwardly (14) is Setsu設. When the deformed rebar (13) as shown in FIG. 4 is fitted, the inclined recessed groove (14) has a narrow inner portion so that the outer cover (13a) of the deformed rebar (13) is inclined recessed groove (14). engage <br/> the back part of, it is preferable to make both sides piece (11b) is prevented from spreading to the right and left.

[0017] On the upper surface of the lower piece (11a), projections other Tona
A center mark (15) and a suitable number of nail holes (16) are provided. With such a plurality of formwork support materials (11), the center marks (15) are aligned with the marking lines on the waste concrete (4), and appropriate intervals are provided in the longitudinal direction of the root cutting groove (2). Place it on the concrete (4), and cut the nail holes (1
Using 6), secure the lower piece (11a) on the scrap concrete (4).

Next, a pair of base part forming molds (5) are erected on both sides of the root cutting groove (2). In addition, each formwork support material
After fitting the horizontal reinforcing bar (13) into the inclined recessed groove (14) of (11) so that it is almost horizontal, another long reinforcing bar (17) is attached to the center and both sides. ) Is placed so as to be parallel to the marking line, and the intersection is bound by a wire or the like.

Next, a pair of left and right beam forming molds (12) are erected on the support portions (11c) of the respective mold supporting members (11). Needle
Parts forming mold (12) may have the Ru known Styrofoam der, in plan view inward T-shaped receiving grooves facing Setsu設been vertically toward middle-section from the upper end (18), For beam formation
The left and right molds (12) are fitted to each other by fitting the T-shaped edge portions (19a) formed at both ends of the hard synthetic resin connecting material (19) orthogonal to the molds (12) from above. Are connected to each other .

Of the plurality of protrusions (19b) projecting at appropriate intervals on the upper edge of the connecting member (19), the two in the center are also provided.
Between the places the marking line parallel reinforcement (20), in place of this reinforcement (20), a plurality of reinforcing bars facing the vertical direction (21) forms an applied by wire or the like.

The lower end of the vertical reinforcing bar (21) is
7) Crosses and binds at the intersection, and if necessary, rebar (22) parallel to rebar (20) in place of rebar (21).
Cross and bind the intersection.

Next, between the two beam-forming mold (12), the pouring fresh concrete, fresh concrete, both formwork
From the lower end of (12), pass between the form support materials (11) and
Spread between (5).

The upper surface of the green concrete exposed between the base part forming mold (5) and the beam forming mold (12) is opposed to
Flatten the top surface of the green concrete exposed between the base part forming molds (5) and (5) with a trowel or the like.

Since the viscosity of green concrete is high,
Both mold (5) (5) fresh concrete between the, but not flow out upwardly from between the beam-forming formwork (12), if there is the possibility, mold (5) The upper surface between the mold and the frame (12) is covered with an appropriate closing plate (not shown) .

By performing the construction as described above, the base portion (A1) of the cloth foundation (A) can be set by one-time placing of fresh concrete.
And the beam portion (A2) is easily formed at the same time. Base part (A
After hardening of concrete of 1) and beam part (A2), both formwork (5)
(12) may be removed, but if the beam-forming formwork (12) is the calling <br/> made polystyrene foam is as it is allowed, the mold (1
It is convenient to use 2) as a heat insulating material. At this time,
It is preferable that the frame for forming the spout part (5) is also made of styrofoam and is left in the same manner.

The above construction procedure is an example, and for example, the order of assembling the form (5) and the form (12) and the reinforcing bars (13) (17).
(20) (21) sequence or the like assembly of (22) can also be practiced with modification as necessary.

[0027]

, According to the present invention (a) pouring of a single concrete
Since the base part and the beam part of the cloth foundation can be formed at the same time, the cost can be significantly reduced compared to the conventional method in which the fresh concrete had to be poured in two times. At the same time, the construction period can be remarkably shortened, and the labor required for assembly and the like can be remarkably reduced.

(B) Reinforcing bar for horizontal bars can be easily placed at a required position.
Buried in.

[0029] (c) the implementation of the above construction method, the use of the formwork support according to the present invention, in a state of lifting the beam-forming formwork to the required height, can be easily and reliably supported,
It is convenient.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a cloth foundation construction site showing a state of implementation of a construction method of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a perspective view of a form support material of the present invention.

FIG. 4 is a front view of the same.

FIG. 5 is a vertical cross-sectional front view showing the situation at the end of the placement of waste concrete in the conventional cloth foundation construction method.

FIG. 6 is a vertical sectional front view showing a situation at the time when the concrete pouring of the base portion is finished.

FIG. 7 is a vertical cross-sectional front view showing a situation at the time of finishing the concrete pouring of the beam portion.

[Explanation of symbols]

(A) Cloth foundation (A1) Base part (A2) Beam part (1) Ground (2) Root cutting groove (3) Kuriishi (4) Waste concrete (5) Base part forming formwork (6) Beam part forming Formwork (7) Connecting means (11) Formwork support material (11a) Lower piece (11b) Side piece (11c) Support part (11d) Standing piece (12) Beam part forming formwork (13) Reinforcing bar (13a) distrust (14) indented portion (15) center mark (16) nail hole (17) rebar (18) receiving grooves (19) connecting member (19a) edge (19b) projections (20) (21) (22) rebar

Claims (4)

(57) [Claims] 1. A rubble stone is laid on the bottom of a root cutting groove excavated in the ground, and waste concrete is placed from above above at appropriate intervals in the longitudinal direction of the root cutting groove. a substantially upward U-shape of a plurality of formwork support having a bearing portion of the beam portion forming mold on top, placed with an appropriate spacing in the longitudinal direction of the root kerf, both of the formwork support A pair of beam forming molds are erected on the side bearings and concaves are formed on the side edges of both side pieces of the frame supporting member.
Fit the horizontal reinforcing bar, which is orthogonal to the beam forming mold, into the groove
And form a pair of base part forming molds standing on both sides of the root cutting groove , and pouring fresh concrete between the beam part forming molds to form a base part and a beam part. A method for constructing a cloth foundation, which comprises simultaneously forming and. 2. The cloth foundation construction method according to claim 1, wherein the recessed groove is inclined downward . The top of wherein each side piece standing from both ends of the horizontal bottom piece, and characterized by forming a bearing for the lower end of the mold of the pair of beam portions formed of the fabric foundation can fit To claim
Form support used for carrying out the method according to 1 . 4. A recessed groove for supporting a reinforcing bar for a horizontal bar that is inclined downward is provided at a side edge of each of the both side pieces.
Form support material described.