JPH1181334A - Execution method of continuous footing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an execution method through which a highly heat-insulative and sturdy continuous concrete footing can be constructed in a low cost. SOLUTION: An embedded concrete form provided with a plurality of resin foam panels 1 arranged at both right and left sides to form a space for placing concrete C, joiners vertically connecting these panels, and separators connecting the right and left joiners, is used for this execution method of a continuous footing The joiners are constituted of base members 2 embracing the lower end parts of the lowermost panels 1, connection members 3 embracing the upper ends of the lower stage panels 1 and the lower ends of the upper stage panels 1 respectively, and cap members 4 embracing the upper ends of the uppermost panels 1. And separators 5, 6 in which connection parts 5A, 6A are formed at both ends thereof are installed so as to form truss-shaped beams between the right and left connection members 3 and also between the cap members 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a fabric foundation, and more particularly, to a method of constructing a fabric foundation capable of constructing a strong heat-insulating and robust fabric foundation and reducing construction costs. .

[0002]

2. Description of the Related Art As a formwork for placing a concrete foundation in a house or the like, an embedded concrete formwork for placing a cloth foundation having high heat insulation properties has been conventionally known. This embedded concrete formwork includes a plurality of foamed resin panels arranged on the left and right sides of the concrete casting space, a joiner connecting the foamed resin panels up and down, and a separator connecting the left and right joiners. And

[0003]

By the way, in the method of constructing a cloth foundation using this type of embedded concrete form, a cloth foundation in which the outer wall surface and the inner wall surface are formed of foam resin panels is constructed. The problem is to further improve the strength. In addition, since the shapes of the components constituting the joiner and the separator of the mold are complicated and the number of components is large, there is also a problem that the assembling work of the mold is troublesome and the construction cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to construct a fabric foundation having a high heat insulation property and a robust fabric foundation and capable of reducing construction costs. It is to provide a method.

[0005]

In order to achieve the above-mentioned object, a method for constructing a fabric foundation according to the present invention comprises the steps of: providing a concrete casting space; A method of constructing a fabric foundation using an embedded concrete formwork having a joiner for connecting each foam resin panel up and down and a separator for connecting the left and right joiners, wherein the foam resin panel is vertically It has a connecting step of a foamed resin panel to be connected, and a connecting step of a joiner to connect the left and right joiners. In the connecting step of the foamed resin panel, it is formed into a U-shaped cross section channel and fixed on a footing. And a base member enclosing the lower end of the lowermost foamed resin panel, the upper end and the upper end of the lower foamed resin panel formed in a channel shape having an H-shaped cross section. A connecting member for enclosing the lower end portion of the foamed resin panel and a cap member formed in a channel shape having an inverted U-shaped cross-section and enclosing the upper end portion of the uppermost foamed resin panel. By connecting the foamed resin panels up and down, in the joining step of the joiner, the connecting portions formed at both ends of the separator are connected to a plurality of locking holes arranged along the longitudinal direction of the connecting member and the cap member. By inserting, the separator is laid in a truss beam shape between the left and right connection members and between the cap members, and the left and right connection members and the cap members are connected.

In the present invention, it is preferable to take any of the following measures in order to reliably construct the corner portion of the fabric base. That is, in the connecting step of the foamed resin panel, a pair of inner and outer base members, connecting members and cap members formed into an L-shape in plan view are arranged at the corners of the formwork. Alternatively, in the joining step of the joiner, a stay is used in which a connecting member inserted into the locking hole of the connecting member and the cap portion is formed at both ends, and the stay is arranged at the outer corner portion of the mold and mutually connected. It is laid in a staggered manner between the orthogonal connecting members and between the cap members.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for constructing a fabric foundation according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a straight portion of an embedded concrete form used in the method of constructing a fabric foundation, FIG. 2 is a perspective view showing a joiner and a separator of the straight portion of the embedded concrete form, and FIG. FIG. 4 is a plan view showing a corner portion and a straight portion of the recessed concrete formwork used as the embodiment, and FIG. 4 is a plan view showing a corner portion and a straight portion of the recessed concrete formwork used as the second embodiment. .

First, an embedded concrete form used in the method of constructing a fabric foundation according to the present invention will be described. As shown in FIG. 1, this embedded concrete form is used as a concrete foundation for a house or the like, for example, with a footing (F).
A recessed concrete formwork for constructing a cloth foundation (N) thereon, a plurality of foamed resin panels (1) arranged on the left and right sides of a concrete (C) casting space opened
And a joiner for connecting the foamed resin panels (1) vertically and a separator for connecting the left and right joiners.

The foamed resin panel (1) is made of a closed-cell foamed resin having high moisture permeability resistance and excellent heat insulation. As the foamed resin, a polyolefin-based resin such as polyethylene or polypropylene is used in addition to a polystyrene-based or polyurethane-based resin. The expansion ratio is usually 10 to 60.
Times, preferably 20 to 40 times. 15kg density
/ M ³ or more, preferably 20 kg / m ³ , is suitable as the foamed resin panel (1) in terms of strength and elastic modulus. Such a foamed resin panel (1) is, for example, molded into a plate having a thickness of about 30 to 60 mm, a height of about 200 to 400 mm, and a length of about 300 to 2,000 mm,
Alternatively, it is cut out from a foamed resin molded in a block shape into a plate shape having the above dimensions.

[0010] The joiner includes a base member (2) molded into a channel shape having a U-shaped cross section and fixed on the footing (F) to enclose the lower end of the lowermost foamed resin panel (1). A connecting member (3) formed into a channel shape having an H-shaped cross section and enclosing the upper end of the lower foamed resin panel (1) and the lower end of the upper foamed resin panel (1), respectively; There are used three types of members: a cap member (4) formed in a channel shape with a cross section and enclosing the upper end of the foam resin panel (1) at the uppermost stage.

The separator includes a first separator (5) for connecting left and right connecting members (3) to each other;
A second separator (6) for connecting the left and right cap members (4) is used.

As shown in FIG. 2, each connecting member (3) has
Connecting portions (5) formed at both ends of the first separator (5)
A plurality of locking holes (3B) for locking A) are arranged along the longitudinal direction, and each cap member (4) has a connecting portion (6A) formed at both ends of the second separator (6). A plurality of locking holes (4A) for locking are arranged along the longitudinal direction.

A base member (2) constituting a joiner;
The connection member (3) and the cap member (4) may be made of metal, but in the present embodiment, are extruded or injection-molded with a synthetic resin. Examples of the synthetic resin include polyolefin resins such as polyethylene and polypropylene and copolymers thereof, and various thermoplastic resins such as polystyrene, acrylonitrile-styrene, acrylonitrile-styrene-butadiene, and polyvinyl chloride, and various types of unsaturated polyesters and the like. Thermosetting resin. These synthetic resins may contain fillers such as talc and glass fibers, coloring agents and other additives.

The base member (2) is formed in a channel shape corresponding to the thickness and length of the foamed resin panel (1).
A) are pierced at predetermined pitches of 20 to 300 mm along the longitudinal direction. Such a base member (2)
It is fixed on the footing (F) by concrete nails (7) driven into each pilot hole (2A). Each base member (2) has a lowermost row (first row) arranged on the left and right.
The lower end of the foamed resin panel (1) is fitted without loosening.

The connection member (3) is a foamed resin panel (1)
Is formed in the shape of a channel having an H-shaped cross section corresponding to the thickness and length thereof, and has a flange (3A) protruding from one side surface at the center in the vertical direction. A plurality of the locking holes (3B) are formed in the flange (3A) at a predetermined pitch of 20 to 100 mm along the longitudinal direction. The connecting member (3) includes an upper end portion of the lower (first) foamed resin panel (1) and a lower end portion of each of the upper (second) foamed resin panels (1) arranged on the left and right. Fitted without looseness.

The cap member (4) is formed in a channel shape having an inverted U-shaped cross section corresponding to the thickness and length of the foamed resin panel (1).
The locking hole (4A) is 20 to 100 m along the longitudinal direction.
A plurality of holes are formed at a predetermined pitch of m. On the other side in the width direction of the cap member (4), a jetty (4B) projecting upward is formed. Then, the upper end portion of the uppermost (second stage) foamed resin panel (1) arranged on the left and right is loosely fitted into the cap member (4).

The first separator (5) is made of, for example, a steel bar, and has a L-shaped connecting portion (5A) inserted into the locking hole (3B) of the connecting member (3) from above at both ends. It is formed in a bent shape. In the center of the first separator (5), a recess (5B) for receiving a reinforcing bar (T) is bent in a V-shape. Similarly, the second separator (6) is also made of a steel bar, and a connecting portion (6A) inserted from above into the locking hole (4A) of the cap member (4) is bent at both ends thereof into an L-shape. A concave portion (6B) for receiving a reinforcing bar (T) is bent and formed in a V-shape at the center thereof.

Here, in the first embodiment, an embedded concrete form having a corner portion configured as shown in FIG. 3 is used, and in the second embodiment, the corner portion is formed as shown in FIG. The constructed embedded concrete formwork is used.

In the embedded concrete form shown in FIG. 3, a pair of base members (2), a connecting member (3) and a cap member (4) formed into an L-shape in plan view are provided at the corners of the form. Are located. In this case, the length of each side of the pair of inner and outer base members (2), the connecting member (3), and the cap member (4) is adjusted so that the ends are opposed to each other.

In the recessed concrete formwork shown in FIG. 4, the first stay (1) is formed at both ends with connecting portions inserted from above into the locking holes (3B) of the connecting member (3).
0) and a second stay (11) having a connecting portion inserted from above into the locking hole (4A) of the cap portion (4). A first stay (10) is arranged between the connecting members (3) which are arranged at the outer corner portions of the formwork and are orthogonal to each other, in a staggered manner, and similarly arranged at the outer corner portions of the formwork; A second stay (11) is provided between the cap members (4) orthogonal to each other in a staggered manner.

The first stay (10) and the second stay (1)
1) is made of a steel bar material as in the case of the first separator (5), and has a connecting portion bent at both ends in an L-shape. Each of these may be one, but as shown in FIG. 4, it is preferable to configure them with a plurality of wires having different lengths in order to increase the connection strength.

The ends of the connecting members (3) and the cap members (4) arranged at the outer corners of the formwork are obliquely joined to each other and are orthogonal to each other. Similarly, the connecting members (3) and the cap members (4) arranged at the inner corners of the formwork are also orthogonally crossed at their ends by oblique joining.

Next, a method of constructing a fabric foundation according to the present invention will be described. This construction method is applied when constructing a cloth foundation (N) on a footing (F) cast through a split stone (W) and a waste concrete (S) as a concrete foundation for a house or the like.

The method of constructing a fabric foundation according to the present invention includes at least a connecting step of a foamed resin panel for connecting foamed resin panels up and down, a connecting step of a joiner for connecting left and right joiners, and a concrete placing step. Have.

In the connecting step of the foamed resin panels, first, the base members (2) are arranged in two rows on the footing (F) along the longitudinal direction of the cloth foundation (N) to be constructed.
In this case, the base members (2) are continuously connected without any gap in the longitudinal direction in the straight portion of the fabric base (N), and are joined at right angles without any gap in the corner portion. Then, a concrete nail (7) is driven into the prepared hole (2A) of the base member (2) to fix each base member (2) on the footing (F).

Next, the lower end portion of the foamed resin panel (1) is fitted without looseness into each of the base members (2) arranged in two rows on the left and right, and each foamed resin panel (1) at the lowermost stage (first stage) is fitted. Are arranged on the left and right sides of the concrete casting space. At that time, the foam resin panels (1) at the lowermost stage (first stage) are arranged without gaps in the arrangement direction.

Subsequently, each connection member (3) is fitted without looseness to the upper end of each of the lower (first) foam resin panels (1) arranged in two rows on the left and right. In this case, in the first embodiment, a pair of inner and outer connecting members (3) formed into an L-shape in plan view and arranged at the corners of the formwork are fitted to the upper end of the foamed resin panel (1) without loosening. Combine. At this time, the connection members (3) are arranged without any gap in two rows on the left and right in a direction in which the flanges (3A) face each other.

Then, as a joining step of the joiner, connecting portions (5A) of both ends of the first separator (5) are inserted into locking holes (3B) formed in the flanges (3A) of the left and right connecting members (3). The left and right connecting members (3) are connected by inserting a plurality of first separators (5) between the left and right connecting members (3). In this case, each first
The separator (5) is installed in a truss beam shape in order to increase the connection strength between the left and right connection members (3) (see FIG. 3).

Next, as a connecting step of the foamed resin panel,
The lower end of the foamed resin panel (1) is fitted without looseness into each of the connecting members (3) arranged in two rows on the left and right, and each foamed resin panel (1) on the upper (second) stage is made of concrete (C). It is arranged on both left and right sides of the casting space. At this time, the foamed resin panels (1) in the upper stage (second stage) are arranged without gaps in the arrangement direction.

Subsequently, the uppermost row (2
Each cap member (4) is fitted without looseness to the upper end of each foamed resin panel (1) in the (stage). In this case, in the first embodiment, a pair of inner and outer cap members (4) formed into an L-shape in plan view and arranged at the corners of the formwork are fitted into the upper end of the foamed resin panel (1) without loosening. Combine. At this time, the cap members (4) are arranged without any gap in two rows on the left and right so that the jetty (4B) is located on the outside.

Then, as a joining step of the joiner, the connecting portions (6) at both ends of the second separator (6) are inserted into the respective locking holes (4A) formed near one side of each cap member (4).
A) is inserted from above, and a plurality of second separators (6) are installed between the left and right cap members (4) to connect the left and right cap members (4) to each other. In this case, each second separator (6) is installed in a truss beam shape in order to increase the connection strength between the left and right cap members (4) (FIG. 3).
reference).

Thereafter, a reinforcing bar (T) is placed on the recess (5B) of each first separator (5) and the recess (6B) of each second separator (6), and the reinforcing bar (T) is placed on the first separator (5). The separator (6) and the reinforcing bar (T) rising from the footing (F) are bound with a binding wire such as a wire. In addition, each joining part of each foamed resin panel (1), the base member (2), the connecting member (3), and the cap member (4) which continues along the longitudinal direction of the cloth foundation (N) is a concrete casting space. It is preferable that the inside is sealed with a sealing tape or the like.

With the above operation, the embedded concrete formwork is assembled on the footing (F). Then, as a concrete placing process, concrete (C) is poured into the concrete placing space between the foamed resin panels (1) arranged in two rows on the left and right. At that time, the concrete (C) is cast to the vicinity of each jetty (4B) of each cap member (4) arranged on the left and right, and each second separator (6)
Buried.

In the first embodiment, a pair of inner and outer base members (2), a connecting member (3) and a cap member (4) formed in an L-shape in plan view are arranged at the corners of the mold. The pair of inner and outer connecting members (3) are connected via a plurality of first separators (5) which are laid in a truss beam shape. Similarly, the pair of inner and outer cap members (4) are connected via a plurality of second separators (6) spanned like truss beams. Therefore, it is possible to prevent a situation in which the corner of the form is opened and the concrete (C) flows out due to the casting of the concrete (C).

Thus, the fabric foundation (N) is cast on the footing (F) integrally with the embedded concrete formwork. The outer and inner wall surfaces of the cloth foundation (N) are covered with the foamed resin panels (1), and can exhibit high heat insulating properties.

Here, the cloth foundation (N) constructed on the footing (F) has a foamed resin panel (1) on the outer wall surface and the inner wall surface. It is preferable to apply a metal lath (8) or the like to the surface of 1) and spray-coat with a mortar (9).

On the other hand, in the second embodiment using a recessed concrete formwork having a corner portion as shown in FIG. 4, the connecting members (3) arranged at the outer corner portion of the formwork and orthogonal to each other. The cap members (4) are connected to each other via the first stays (10) arranged in a staggered manner, and similarly, the cap members (4) arranged in the outer corner portions of the formwork and orthogonal to each other are staggered. Are connected to each other via a second stay (11) arranged in the first position. Therefore, it is possible to prevent a situation in which the corner of the form is opened and the concrete (C) flows out due to the casting of the concrete (C).

In the method for constructing a fabric foundation according to the present invention, the left and right connecting members (3) and the cap member (4) are interposed via the first separator (5) and the second separator (6) which are bridged in a truss beam shape. Reinforced concrete foundation (N)
Can be obtained.

The embedded concrete form used in the method of constructing a fabric foundation according to the present invention comprises straight base members (2), connecting members (3), cap members (4), and first separators (4). Since the 5) and the second separator (6) have the same shape, the joiner and the separator can be simply configured with a small number of parts. Further, the foamed resin panel (1) is formed in a simple plate shape, and basically, each foamed resin panel (1) can have the same shape. Therefore, the construction cost of the fabric foundation can be reduced.

Further, the base member (2), the connecting member (3) and the cap member (4) can be attached to the foamed resin panel (1) by a simple operation merely by fitting the foamed resin panel (1) up and down. Can be connected up and down. Also,
The first separator (5) can easily connect the connection members (3) only by inserting the connection portions (5A) at both ends thereof into the locking holes (3B) of the connection member (3), respectively.
Similarly, the second separator (6) has the connecting portions (6A) at both ends thereof respectively engaged with the locking holes (4) of the cap member (4).
The cap members (4) can be easily connected to each other simply by inserting the cap members (A). Therefore, in the method of constructing a fabric foundation according to the present invention, the work of assembling the formwork is simple, and the construction cost can be reduced.

The cap member (4) of the embedded concrete form used in the method of constructing a fabric foundation according to the present invention has a cross-sectional shape in which a flange is protruded on one side surface, and the flange is provided with each of the locking members. A hole (4A) may be provided. In this case, since the cap members (4) can be connected to each other via the first separator (5) and the second separator (6) can be eliminated, the construction cost of the fabric foundation can be further reduced. I can do it.

[0042]

As described above, according to the method of constructing a cloth foundation of the present invention, by injecting concrete into a recessed concrete formwork, the heat insulation in which the outer wall surface and the inner wall surface are covered with the foamed resin panel. It is possible to construct a highly reliable cloth foundation. As a result, it is possible to reduce the floor heat insulation of the building constructed on the cloth foundation. Further, in the embedded concrete formwork, since the outer wall surface and the inner wall surface are covered with a foamed resin panel having high heat insulating properties, it is possible to prevent freezing and melting of the concrete during curing in a cold region or the like. The embedded concrete form has a rigidly connected left and right connection member and a cap member via a truss beam-shaped separator, and is rigid and has a small positional deviation in the installation position. Even when the material is buried, there is little deformation due to earth pressure, so that it is possible to construct a robust and high dimensional accuracy fabric foundation.

The embedded concrete form used in the method of constructing a fabric foundation according to the present invention has the same shape for each base member, connecting member, cap member and separator of the straight portion, and is simple with a small number of joiners and separators. Can be configured. By changing only the length of the separator, it is possible to cope with fabric bases of various dimensions having different widths. Further, the foamed resin panel can be used in a simple plate shape that does not require any special additional processing. Furthermore, the base member, the connecting member, and the cap member can connect the foamed resin panel up and down by a simple operation of merely fitting the foamed resin panel up and down. Further, the left and right connection members and the left and right cap members can be easily connected only by inserting the connection portions at both ends of the separator into the engagement holes of the connection member and the engagement holes of the cap member, respectively. Therefore, the method of constructing a fabric foundation according to the present invention can reduce the construction cost because the manufacturing cost of the embedded concrete form used is inexpensive and the assembling work is simple.

When a pair of inner and outer base members, a connecting member and a cap member, each of which is formed into an L-shape in plan view, are disposed in a corner portion as an embedded concrete form used in the method of constructing a fabric foundation of the present invention. Or, a stay is used in which a connecting portion inserted into the locking hole of the connecting member and the cap portion is formed at both ends, and the connecting member and the cap member are arranged at the outer corner portion of the formwork and are orthogonal to each other. In the case where the stay is laid in a staggered manner in between, it is possible to prevent a situation in which the corner of the form is opened due to the casting of concrete and the concrete flows out, and the corner of the cloth foundation is prevented. Can be built reliably.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a straight portion of an embedded concrete form used in a method of constructing a fabric foundation according to the present invention.

FIG. 2 is a perspective view showing a joiner and a separator in a straight portion of the embedded concrete formwork.

FIG. 3 is a plan view showing a corner portion and a straight portion of the embedded concrete formwork used as the first embodiment.

FIG. 4 is a plan view showing a corner portion and a straight portion of an embedded concrete formwork used as a second embodiment.

[Explanation of symbols]

 1: foamed resin panel 2: base member 2A: pilot hole 3: connecting member 3A: flange 3B: locking hole 4: cap member 4A: locking hole 4B: jetty 5: first separator 5A: connecting portion 5B: dent 6 : 2nd separator 6A: connecting part 6B: recess 7: concrete nail 8: metal lath 9: mortar 10: 1st stay 11: 2nd stay C: concrete F: footing N: cloth foundation S: discarded concrete T: rebar W: Cracked stone

Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04B 2/86 611K 611N

Claims (3)

[Claims] An open space for concrete is provided, a plurality of foamed resin panels are arranged on both left and right sides thereof, a joiner connecting the foamed resin panels up and down, and a separator connecting the left and right joiners. A method of constructing a cloth foundation using embedded concrete formwork, comprising a step of connecting foam resin panels to connect foam resin panels up and down, and a step of joining joiners to connect left and right joiners. In the connecting step of the foamed resin panel, a base member molded into a U-shaped cross-section channel shape and fixed on the footing and enclosing the lower end of the lowermost foamed resin panel, and an H-shaped cross-section A connection member formed in a channel shape and enclosing the upper end of the lower foam resin panel and the lower end of the upper foam resin panel,
By using, as a joiner, a cap member formed into a channel shape having an inverted U-shaped cross section and enclosing the upper end of the uppermost foamed resin panel, the foamed resin panels are vertically connected, and in the joining step of the joiner, By inserting the connecting portions formed at both ends of the separator into a plurality of locking holes arranged along the longitudinal direction of the connecting member and the cap member, the separator is provided between the left and right connecting members and between the cap members. A left and right connecting member and a cap member are connected to each other in a truss beam shape. 2. The cloth foundation according to claim 1, wherein in the connecting step of the foamed resin panel, a pair of inner and outer base members, a connecting member and a cap member formed into an L shape in a plan view are arranged at the corners of the formwork. Construction method. 3. In the joining step of the joiner, a stay having a connecting member and a connecting portion inserted into the locking hole of the cap portion formed at both ends is used, and the stay is arranged at an outer corner portion of the mold. The construction method of a fabric foundation according to claim 1, wherein the fabric foundation is laid in a staggered manner between connection members and cap members that are orthogonal to each other.