JP5267419B2 - Formwork for exterior soil-to-soil concrete and construction method of exterior soil-to-soil concrete. - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a form 1 for an exterior concrete slab on grade, which is used for the formation of the exterior concrete slab on grade, which enables a curved shape with an arbitrary curvature to be easily formed in a neatly finished state, and which is excellent in general-purpose properties. <P>SOLUTION: This form 1 for the exterior concrete slab on grade includes: a plurality of rectangular flexible flat plate-like sheathing boards 2, which dam up the poured concrete; a round pipe 3 which has an upper end provided with a flange 32 fixed to the upper end surface 2c of the sheathing board 2, and which is mounted to the lateral surface 2b on the other side of a concrete placing surface 2a of the sheathing board 2; a reinforcing bar 4 which is inserted through the round pipe 3 and which has a lower end driven into the ground; and connecting implements 5, 6 and 7 for connecting the sheathing boards 2 to one another. The sheathing board 2 is fixed to the ground G by means of the round pipe 3 and the reinforcing bar 4 while being curved depending on the planar shape of the predesigned concrete slab on grade. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for exterior soil-to-soil concrete and a method for constructing exterior soil-to-soil concrete. Regarding the method.

  There is a case where soil concrete in which concrete is placed in a plane in an approach or a garage is used for an exterior of a building such as a house. And in such external construction concrete, the curved part is often provided in the peripheral shape of the concrete in the plan view placed mainly for design reasons.

  In the case of providing such a curved portion, a wood plywood curved to a curvature according to the purpose has been used as a mold from the beginning. However, such wood plywood has no versatility because the curvature cannot be changed, and the work efficiency is poor. Thus, various types of freely curved frames that can freely change the curvature have been proposed.

  For example, the curvable frame described in Patent Document 1 includes a rectangular flat plate-shaped dam plate made of a thermoplastic resin sheet or a thermosetting resin sheet, and a plurality of frame members are provided on the back side of the dam plate. And the crosspieces are fixed at a predetermined interval. A continuous barrier plate is formed by connecting these barrier plates in the lateral direction. On the other hand, a support pipe bent to match the curvature of the target curve is prepared in advance, and the weir plate is bent along the support pipe, and the support pipe is used using a formwork fitting The weir plate is fixed to.

  Further, for example, the curvable formwork described in Patent Document 2 has a flexible dam plate portion that dams up the placed concrete, and the dam plate portion from the upper edge side of the dam plate portion. A free-running form frame including a flange portion extending in an intersecting direction, and a plurality of notches are formed in the flange portion, and a barrier plate is formed by forming the notches. There has been proposed one in which the portion is formed to be deformable in a curved shape in plan view. Then, the curvilinear mold is fixed to a curvilinear mold ruler formed in a predetermined curved shape to reproduce the predetermined curved shape.

  Thus, the curveable molds described in Patent Document 1 and Patent Document 2 can form a mold according to the curvature of the curve with one kind of barrier plate, and are excellent in versatility.

JP 09-310488 A JP 2006-348659 A

  However, although the above-mentioned curveable formwork has versatility in the dam plate, it is a support pipe bent to match the curvature of a predetermined curve, or a curveable formwork formed in a predetermined curve shape A ruler is required, and these support pipes or rulers for curved formwork are not versatile. It is inconvenient that a support pipe with a desired curvature or a ruler for curved formwork must be prepared each time. It is.

  Therefore, the present invention is a formwork used for forming the concrete between exterior soils, and can form a curved shape having an arbitrary curvature extremely easily and with a clean finish, and has excellent versatility. It is an object of the present invention to provide a soil concrete formwork and an external soil concrete construction method.

  The formwork for inter-soil concrete according to claim 1 is flexible and has a plurality of rectangular flat plate-shaped dam plates that dam the placed concrete, and is fixed to the upper end surface of the dam plate at the upper end. A round pipe attached to the side opposite to the concrete placement surface of the dam plate, a rebar inserted through the round pipe and driven at its lower end into the ground, and the dam plates An external soil-concrete formwork provided with a connecting tool that connects the round pipe and the round pipe in a state where the dam plate is curved in accordance with a peripheral shape of the pre-designed soil concrete in plan view. The dam plate is fixed to the ground with the reinforcing bars.

  The formwork for inter-soil concrete according to claim 2, wherein the connecting member is bent from the straight side surface portion, a straight side surface portion fixed to a side surface opposite to the concrete placing surface of the dam plate. An upper surface portion fixed to the upper end surface of the dam plate, and a linear connector for connecting the end portions of the two dam plates that are linearly abutted with each other, and the end portions are brought into contact with each other at a substantially right angle. A bent side surface that is bent substantially at right angles so as to be along the two dam plates, and is fixed to a side surface opposite to the concrete placement surface of the two dam plates; An L-shaped upper surface portion formed on the upper end and fixed to the upper end surface of the barrier plate, and a corner connector for connecting the two barrier plates to each other, and a side opposite to the concrete placement surface of the barrier plate A side portion fixed to the side surface of the plate, bent from the side portion and fixed to the upper end surface of the barrier plate, and Any one or more of: a T-shaped upper surface portion formed by projecting the center, and a T-shaped coupler for coupling another dam plate projecting in the concrete placing direction from the middle portion of the dam plate It is characterized by being.

  According to a third aspect of the present invention, there is provided a method for constructing concrete between external grounds, which is flexible and is formed on the upper end surface of a rectangular flat plate-like dam plate that dams up the placed concrete at the upper end of a round pipe at a predetermined interval. The round pipe mounting step for fixing the flange portion and attaching the round pipe to the side surface of the dam plate, and arranging the dam plate in a curved manner according to the peripheral shape in plan view of the soil concrete designed in advance, A reinforcing bar driving step of inserting a reinforcing bar into the round pipe abutted on the side surface of the barrier plate and driving the lower end of the reinforcing bar into the ground, and a weir for connecting the arranged barrier plates to each other by a connector A plate connection step, and a placement curing step for placing and curing the concrete in the external form intersoil concrete form formed by the round pipe connection step, the reinforcing bar driving step, and the dam plate connection step. It is a feature.

  According to the formwork for inter-soil concrete according to claim 1, the round pipe is attached to the side surface opposite to the concrete placement surface of the dam plate, and the lower end of the reinforcing bar inserted into the round pipe is driven into the ground. Thus, the barrier plate is fixed to the ground. Since the dam plate is flexible, the dam plate is curved in accordance with the peripheral shape of the pre-designed soil concrete in plan view, and the dam plate is fixed to the ground by a round pipe and a reinforcing bar. It can be a dam plate curved to a desired curvature, and by connecting a plurality of dam plates with a connector, a formwork for inter-soil concrete having a curved portion with a free curvature can be formed. .

  According to the formwork for interstitial concrete of the outer construction described in claim 2, the connecting tool is connected to the straight connecting tool for connecting the end portions of the two weir plates that are linearly abutted, and the end portions are substantially perpendicular to each other. Since it can be selected from a corner connector that connects two dam plates that are in contact with each other, and a T-shaped connector that connects another dam plate that protrudes in the concrete placement direction from the middle portion of the dam plate. , Each dam can be properly connected.

  According to the construction method of external ground interstitial concrete according to claim 3, the round pipe attaching step of attaching a round pipe to the side surface of the weir plate, and the weir plate is curved in accordance with the peripheral shape in plan view of the soil concrete pre-designed And a reinforcing bar driving step of inserting a reinforcing bar into the round pipe and driving the lower end of the reinforcing bar into the ground, and a weir plate connecting step of connecting the arranged barrier plates to each other by a connecting tool, And a placement curing process for placing and curing the concrete in the formwork for the interstitial concrete formed by these three processes, so that it is very easy to form the interstitial concrete formed to the desired curvature. be able to.

The simplified top view explaining the structure of the external form soil concrete formwork. The partial omission perspective view explaining the composition of a weir board. (A) is a perspective view explaining the shape of a round pipe, (b) is a perspective view which shows the reinforcing bar inserted in a round pipe. (A) is a perspective view explaining the round pipe attachment process which attaches a round pipe to a dam plate, (b) is a perspective view explaining the reinforcing bar driving process which drives the reinforcing bar inserted in the round pipe into the ground. The perspective view which shows the state which curved the weir board so that external construction soil concrete may swell in planar view. The perspective view which shows the state which curved the dam so that the concrete between outer structure soil might become depressed by planar view. The perspective view which shows the structure of a linear coupler. The perspective view explaining the state which connected the weir boards linearly using the linear coupler. The perspective view which shows the structure of a corner coupling tool. The perspective view explaining the state by which the edge part of the weir board was mutually connected at substantially right angle using the corner connector. The perspective view which shows the structure of a T-shaped connector. The perspective view explaining the state which connected the other dam plate to the intermediate part of one dam plate at a substantially right angle using a T-shaped connector.

  Hereinafter, the best embodiments of the formwork 1 for exterior soil-to-soil concrete and the method for constructing exterior soil-to-soil concrete will be described with reference to the drawings. As shown in FIG. 1, the external form interstitial concrete form 1 is a form for forming interstitial concrete, and a plurality of dam plates 2 for damming the concrete, and a round pipe attached to the side surface of the dam plate 2 3, a rebar 4 that is inserted into the round pipe 3 and driven into the ground G, and three types of connectors 5, 6, and 7 that connect the barrier plates 2 to each other.

  And this exterior construction soil concrete construction method uses the above-mentioned exterior construction soil concrete formwork 1, a round pipe mounting step for attaching the round pipe 3 to the dam plate 2, and a reinforcing bar in the round pipe 3. 4, a reinforcing bar driving step for driving the lower end of the reinforcing bar 4 into the ground G, a weir plate connecting step for connecting the weir plates 2 to each other by connecting members 5, 6, and 7, A placement curing step of placing and curing concrete in the mold 1.

  As shown in FIG. 2, the dam plate 2 is formed of, for example, a mixed resin of polyethylene and polypropylene, and the surface thereof is coated with a polyethylene film, and has flexibility. The shape of the dam plate 2 is, for example, a rectangular flat plate having a length of 3000 millimeters (A), a height of 118 millimeters (B), and a width of 20 millimeters (C). The shape of the barrier plate 2 is not limited to this, and a plurality of different lengths of the barrier plate 2 such as a length of 5000 millimeters may be used. In addition, the material of the barrier plate 2 is not limited to this, and is formed of other resin, metal, wood, etc. as long as it has a function of blocking concrete and flexibility to bend with a predetermined range of curvature. It may be.

  As shown in FIG. 3A, the round pipe 3 is welded to a cylindrical round pipe body 31 having a hole 31 a through which the reinforcing bar 4 can be inserted and a height of about 80 mm, and the upper end of the round pipe body 31. Each side has a flange portion 32 of a steel plate formed in a square of about 50 millimeters. The flange portion 32 has a through hole 32a communicating with the hole 31a of the round pipe body 31 at the center thereof, and fixing holes 32b, 32c, 32d, and four fixing holes 32b, 32c, 32d at four locations in each side direction with a distance from the through hole 32a. 32e is formed. Note that the round pipe body 31 may be formed of, for example, a steel pipe, a resin pipe, or a wooden pipe. Further, the reinforcing bar 4 is a columnar steel material having a diameter inserted into the round pipe 3 as shown in FIG.

  As shown in FIG. 4, the round pipe 3 is formed on the upper end surface 2 c of the dam plate 2 with the round pipe body 31 in contact with the side surface 2 b opposite to the concrete placing surface 2 a of the dam plate 2. 3, the fixing holes 32 b, 32 c, 32 d, and 32 e of the flange 32 and the barrier plate 2 are fixed by screws 8. Here, the concrete placement surface 2a refers to a surface that comes into contact with the concrete of the dam plate 2 that dams the concrete when laying the concrete between the external soils. Then, as shown in FIG. 1, FIG. 5 or FIG. 6, the rebar 4 is inserted into the hole 31 a of the round pipe body 31 while the weir plate 2 is curved according to the curvature of the peripheral edge of the pre-designed interstitial concrete. Then, the lower end of the reinforcing bar 4 is driven into the ground G to fix the barrier plate 2. In addition, as shown in FIG. 1, this round pipe 3 is attached with two or more with respect to one dam plate 2, for example, is attached at intervals of 500 mm.

  The connecting members 5, 6, and 7 that connect the barrier plates 2 to each other are used in accordance with the positional relationship of the barrier plates 2 to which the linear connector 5, the corner connector 6, and the T-shaped connector 7 are connected. ing. As shown in FIG. 7, the straight connector 5 is an inverted L-shaped metal member formed by bending the upper end of a steel plate substantially at a right angle, and is a side surface of the weir plate 2 opposite to the concrete placing surface 2 a. It is comprised by the linear side part 51 fixed to 2b, and the upper surface part 52 fixed to the surface of the dam plate 2. As shown in FIG. The straight side surface portion 51 and the upper surface portion 52 are respectively provided with two screw fixing hole portions 53, and as shown in FIG. The two dam plates 2 are connected to each other by fixing the respective holes 53 with screws 8.

  As shown in FIG. 9, the corner connector 6 includes a bent side surface portion 61 that is bent substantially at a right angle, and an L-shaped upper surface portion 62 that is formed in an L shape along the upper end of the bent side surface portion 61. It is a metal member comprised by these. Then, in a state where the end portions of the two dam plates 2 are in contact with each other at a substantially right angle, as shown in FIG. 10, the bent side surface portion covers the corner portion formed by the two dam plates 2. The L-shaped upper surface portion 62 is brought into contact with the upper end surfaces 2c of the two dam plates 2 while 61 is brought into contact with the side surface 2b opposite to the concrete placing surface 2a of the two dam plates 2. Each of the bent side surface portion 61 and the L-shaped upper surface portion 62 is formed with screw fixing holes 63 at two positions at positions corresponding to the two dam plates 2. Then, the screw 8 is driven into the hole 63 to connect the two dam plates 2.

  As shown in FIG. 11, the T-shaped connector 7 has a side surface portion 71 formed in a flat plate shape, a base end portion 72a formed by bending from the upper end of the side surface portion 71, and the center of the base end portion 72a. Furthermore, it is formed from a T-shaped upper surface portion 72 formed in a T shape by a protruding portion 72b formed to protrude. Two screw fixing holes 73 are formed in the base portion 72a of the side surface portion 71 and the T-shaped upper surface portion 72, and the protruding portion 72b of the T-shaped upper surface portion 72 has its One screw fixing hole 73 is provided in the vicinity of the tip.

  Then, as shown in FIG. 12, in the state where the end portions of the other dam plate 2 are brought into contact with the intermediate portion of the one dam plate 2 at a substantially right angle and the dam plates 2 are arranged in a T shape, The side surface portion 71 of the T-shaped connector 7 is disposed on the side surface 2b opposite to the concrete placing surface 2a of the dam plate 2, and the base end portion 72a of the T-shaped upper surface portion 72 is disposed on the upper surface of one dam plate 2. And the protrusion part 72b of the T-shaped upper surface part 72 is arrange | positioned on the upper surface of the other dam plate 2. FIG. Thereafter, each hole 73 is screw-fixed to connect each weir plate 2. In addition, by using such a T-shaped connector 7, it is possible to form a gap portion where concrete is not placed at an intermediate position of the concrete between the exterior soils, if necessary, and to fill the gap portion with soil or gravel. As a result, concrete cracks and the like can be prevented while enhancing the design properties of the concrete between the outer structures.

  As described above, the formwork 1 for the interstitial concrete has a dam plate 2 having flexibility, and a round pipe 3 attached to the side surface 2b opposite to the concrete placing surface 2a of the dam plate 2, Since the barrier plate 2 is fixed to the ground G by the reinforcing bars 4 communicated with the round pipe 3, the barrier plate 2 can be fixed to the ground G by curving to a predetermined curvature. By connecting the plurality of barrier plates 2 with the couplers 5, 6, and 7, it is possible to form the concrete for interstitial concrete 1 having a curved portion with a free curvature. In addition, as described above, the couplers 5, 6, and 7 used for coupling the barrier plates 2 include the linear coupler 5 that connects the end portions of the two barrier plates 2 that are linearly abutted, and the end portions. A corner connector 6 that connects two barrier plates 2 that are brought into contact with each other at a substantially right angle, and a T-connector that connects another barrier plate 2 that protrudes from the intermediate portion of the barrier plate 2 in the concrete placement direction. 7, the weir plates 2 can be appropriately connected to each other, and an appropriate formwork for inter-soil concrete 1 can be formed.

  As described above, the construction method of the interstitial interstitial concrete is as follows. First, the round pipe body 31 is in contact with the side surface 2b opposite to the concrete placing surface 2a of the dam plate 2, and the upper end surface of the dam plate 2 A round pipe mounting process is performed in which the flange portion 32 of the round pipe 3 is brought into contact with 2c, and the fixing holes 32b, 32c, 32d, 32e of the flange portion 32 and the dam plate 2 are fixed by the screws 8. Next, the rebar 4 is inserted into the hole 31a of the round pipe main body 31 and the lower end of the rebar 4 is driven into the ground G while curving the dam plate 2 according to the curvature of the peripheral edge of the pre-designed exterior interstitial concrete. Then, a reinforcing bar driving process for fixing the barrier plate 2 is performed. In parallel with the round pipe attaching step and the reinforcing bar driving step, the dam plate connecting step of connecting the dam plates 2 using the straight connector 5, the corner connector 6, and / or the T-shaped connector 7. I do. The order in which the dam plate connecting process, the round pipe attaching process, and the reinforcing bar driving process are performed can be arbitrarily selected in accordance with the designed shape of the intersoil concrete. Then, through the above steps, a placement curing step is performed in which concrete is placed and cured in the formed external intersoil concrete formwork. When the external soil-to-soil concrete is formed, the exterior soil-to-soil concrete form 1 is removed from the exterior soil-to-soil concrete, and soil and turf are backfilled where necessary to complete the exterior of the building. Let

  As described above, according to the formwork 1 for the concrete between external structures of the present embodiment, the concrete between the external structures can be formed with a desired curvature in a very simple process.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The construction method 1 of the interstitial concrete for external construction according to the present invention and the construction method of the concrete for external construction soil can be suitably used, for example, as a formwork and a construction method when constructing concrete for external construction soil.

DESCRIPTION OF SYMBOLS 1 Form for concrete between external structures 2 Dam plate 2b Side surface on the opposite side to concrete placement surface 2c Upper end surface 3 Round pipe 4 Reinforcement 5 Straight connection tool 6 Corner connection tool 7 T-shaped connection tool 51 Straight side surface part 52 Upper surface part 61 Bent side portion 62 L-shaped upper surface portion 71 Side surface portion 72 T-shaped upper surface portion

Claims (3)

A plurality of rectangular plate-like dam plates that have flexibility and dam the placed concrete;
A round pipe that has a flange portion fixed to the upper end surface of the barrier plate at the upper end and is attached to the side surface opposite to the concrete placement surface of the barrier plate;
A rebar that is inserted into the round pipe and whose lower end is driven into the ground;
A joint for connecting the dams to each other, and a formwork for concrete between external soils,
An external soil-to-soil concrete characterized in that the dam plate is fixed to the ground by the round pipe and the reinforcing bar in a state in which the dam plate is curved according to a peripheral shape of the concrete concrete in plan view in plan view. Formwork for. The connector is
A straight side surface portion fixed to the side surface opposite to the concrete placement surface of the barrier plate, and an upper surface portion bent from the straight side surface portion and fixed to the upper end surface of the barrier plate, and are linear with each other A straight connector that connects the ends of the two weir plates that are abutted to each other;
It is formed to be bent at a substantially right angle so as to follow two dam plates whose ends are brought into contact with each other at a substantially right angle, and is fixed to a side surface opposite to the concrete placement surface of the two dam plates. A corner connector that connects the two weir plates; a bent side surface portion; and an L-shaped upper surface portion that is formed at the upper end of the bent side surface portion and is fixed to the upper end surface of the weir plate.
A side surface portion fixed to the side surface opposite to the concrete placement surface of the dam plate, a T-shaped upper surface formed by bending from the side surface portion and being fixed to the upper end surface of the dam plate and projecting the center thereof And a T-shaped connector for connecting another dam plate projecting in the concrete placement direction from the intermediate portion of the dam plate,
It is any one or more of these, The formwork for concrete between external structures of Claim 1 characterized by the above-mentioned. A flange portion formed on the upper end of the round pipe is fixed to the upper end surface of the rectangular flat plate-like dam plate that dams up the placed concrete, and the round pipe is fixed to the dam plate. Round pipe mounting process to be attached to the side of
The dam plate is arranged in a curved shape according to the peripheral shape of the pre-designed soil concrete in plan view, a rebar is inserted into the round pipe abutted against the side surface of the dam plate, and the lower end of the rebar Rebar driving process to drive
A dam plate connecting step for connecting the arranged dam plates to each other by a connector;
And a placement curing step for placing and curing the concrete in the formwork for concrete between the external soils formed by the round pipe coupling step, the reinforcing bar driving step, and the dam plate coupling step. Construction method for soil concrete.

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