JP5392456B2 - Concrete wall construction support, concrete wall construction structure, and construction method thereof - Google Patents

Description

  The present invention provides a concrete wall construction support, a concrete wall construction structure capable of constructing a concrete wall that can be used repeatedly and has excellent heat insulation performance in the construction of a concrete wall by a concrete formwork method, and It relates to the construction method.

  Conventionally, a concrete formwork method (including a method in which a heat insulating layer is formed) is a method of forming a concrete placement space by forming a formwork with a plywood or the like, and in order to maintain this placement space, A support is used.

For example, in Patent Literature 1, a holding member (cone) is arranged by providing a plurality of through-holes on the opposing surface of the formwork in an opposing manner, and screw holes having different diameters are provided on the front surface and the rear surface of the holding member. The spacing member (separator) is placed on the outside, and concrete is placed in a state in which a mold clamp is arranged.

However, in Patent Document 1 and the like, since the spacing member (bolt or the like) embedded in the concrete after placing is embedded with a single bolt member penetrating the concrete as it is, these supporting members are supported. There is a problem in that the bolt member is wasted by providing several places / m ² in general.
Moreover, since the said volt | bolt was embed | buried under a concrete wall, it worked as a heat bridge or a cool bridge, and also caused the problem which heat insulation performance was impaired.

  Furthermore, when constructing any exterior material, for example, with the surface of the constructed concrete body (heat insulation layer) as the foundation, it is necessary to drive the anchor into the hardened and hardened concrete body, but the work of driving the anchor Had a problem of poor workability because it had to be inked out.

  Therefore, the present invention has an object to provide a concrete wall construction supporter capable of constructing a concrete wall that can repeatedly use members to be used and has excellent heat insulation performance, and a concrete wall construction structure using the same. And

The present invention has been proposed in view of the above, and is a support tool for constructing a concrete wall while maintaining a distance between the molds on one side and the other side, and the support tool includes a plurality of fixing tools. A main body having a threaded portion and having a through-hole penetrating from one side to the other side, a connecting rod-shaped member, and a fixing rod-shaped member having a larger diameter than the connecting rod-shaped member, and the through-hole is fixed The present invention relates to a concrete wall construction support tool characterized in that a bar member for connection and a bar member for connection can be inserted, and the fixing bar member can be screwed into the fixing screw part.

  In the above support device, “a main body having a through-hole penetrating from one side to the other side” means that the main body is formed of a cylindrical body having a through-hole penetrating from one side to the other side. ing.

  Furthermore, the present invention is a construction structure of a concrete wall constructed by placing a support having the above-described configuration between the molds on one side and the other side, and placing the main body between the molds to cast the concrete. A concrete wall construction structure is also proposed in which a fixing rod-like member is inserted into a through-hole of the main body embedded in the concrete and screwed into a fixing screw portion.

  Furthermore, the present invention is a method for constructing a concrete wall in which a concrete wall is constructed by attaching a support having the above-described configuration between molds on one side and the other side and placing concrete, and the main body between the molds A step of attaching the concrete, a step of placing concrete, a step of extracting the connecting rod-shaped member from the through-hole of the main body after the concrete is hardened, and a fixing rod-shaped member inserted into the through-hole to the fixing screw portion A concrete wall construction method characterized by comprising the step of screwing together is also proposed.

The concrete wall construction support tool of the present invention is a member for maintaining the interval between the molds, and includes a main body with a simple configuration, a connecting rod-shaped member that is a bolt material, and a fixing rod-shaped member, Since the connecting rod-shaped member that plays the role of maintaining the spacing when the concrete is placed can be extracted and used repeatedly, the member is not wasted and the heat insulation performance is not impaired.
In addition, since the fixing screw part is provided integrally with the main body, the foundation for building the exterior etc. on the concrete surface simply by screwing the fixing rod-like member after the concrete is hardened (after the formwork is removed) Can be easily constructed.
Furthermore, since a plurality of fixing screw portions are provided , the fixing rod-like member can be firmly supported, and when this structure is adopted as the outer wall, the fixing screw portion on the outer concrete surface side is provided as an exterior structure. The fixing screw portion on the inner concrete surface side (indoor side) can be used as a basis for indoor fall prevention, stairs, built-in furniture, and the like.
Moreover, when the support body is made of resin, the fixing rod-shaped member does not come into contact with the concrete, so that the cooling bridge is blocked and the heat insulation performance is high.

  Moreover, since the construction structure of the concrete wall of the present invention uses the support having the above-described configuration, there is a problem that the connecting rod-shaped member is not embedded and the heat insulation performance by the connecting rod-shaped member is impaired. Absent.

  Furthermore, since the construction method of the concrete wall of the present invention uses the support tool having the above-described configuration, the fixing rod-shaped member serves as an anchor material. .

The construction support tool of the present invention is a member for constructing a concrete wall arranged between the molds on one side and the other side, and has at least one fixing screw part, and from one side to the other side. A main body having a through-hole penetrating to the bottom, a connecting rod-like member for connecting the molds on both sides to a pressing member, and a fixing rod-like member.
This support is preferably made of resin from the viewpoint of heat insulation. This is because when the support body is made of resin, the fixing rod-shaped member does not come into contact with the concrete, so the cooling bridge is blocked and the heat insulation performance is high.
It is preferable that the screw portion is made of metal so that the fixing rod-shaped member does not fall from the wall body even when the support is melted by a flame or the like so that the exterior member can be supported. Further, from the viewpoint of preventing the fall, the screw portion has a diameter or long side larger than the outer diameter of the through hole.

For example, when the fixing rod-like member is inserted (screwed) only from one side, the fixing screw portion in the main body may be one, or the fixing rod-like member is inserted from both one side and the other side. In the case of (screwing), two fixing screw portions are required.
Further, a plurality of fixing screw portions are provided for the purpose of firmly attaching a fixing rod-like member acting as an anchor material.
And as a member provided with this fixing screw part, you may use nuts, such as a hexagon nut, plates etc. which gave female thread processing, for example.

In addition, the through hole in the main body penetrates from one side to the other side as described above, and penetrates from the mold on one side to the mold on the other side.
The main body provided with the through hole has a first cylindrical portion including a first through hole through which the fixing rod-shaped member can be inserted, a central cylindrical portion including a fixing screw portion, and a second through hole through which the connecting rod-shaped member can be inserted. It is a cylindrical body composed of a second cylindrical portion having a hole, and each or all of these cylindrical portions may be integrally connected in advance, or integrally connected (assembled) at the time of construction. You may do it. Of these, the first tube portion and the second tube portion need only be inserted through a rod-shaped member, and therefore, for example, a low-priced product such as a resin pipe material can be selected and used. The practical value is extremely high.

As the simplest configuration, there is an example in which the first tube portion, the central tube portion, and the second tube portion are connected in series from one side to the other side. In this case, a fixing rod-like member can be inserted from one side and can be screwed into the fixing screw portion of the central cylinder portion.
In addition, as described above, when the fixing rod-shaped member is inserted (screwed) from both one side and the other side, the first cylindrical portion (A), the central cylindrical portion (A), and the second cylindrical portion There is an example in which the central tube portion (B) and the first tube portion (B) are connected in series. In addition, in this case, since the first cylinder part and the center cylinder part are each used two, for convenience, the one arranged on one side is (A), and the one arranged on the other side (B) As distinguished. In this case, a fixing rod-like member can be inserted from the first cylindrical portion (A) on one side and screwed into the fixing screw portion of the central cylindrical portion (A), and the first cylindrical portion (B ) Can be inserted into another fixing rod-like member and screwed into the fixing screw portion of the central tube portion (B). As a result, a fixing rod-shaped member acting as an anchor material is attached to one side and the other side.

  Next, the steps (1) to (4) constituting the concrete wall construction method of the present invention will be described.

(1) A step of attaching the support having the above-described configuration between the molds on one side and the other side. In this step, the main body is bridged between the molds on the one side and the other side, and the through holes of the main body are connected. It penetrates with the bar-shaped member, and it fixes in the state which protruded from the through-hole previously formed in the mold. For this fixing, for example, a presser having various configurations is screwed onto the protruding tip on one side, and the presser such as a vertical flap and a horizontal flap on one side is applied to the one side mold by the presser. Fix it. Moreover, the same may be done for the protruding tip on the other side, and it may contact (penetrate) the mold on the other side via a cone-shaped holding member.
Note that a heat insulating material may be disposed on the inner surface of the mold, or a heat insulating material that also serves as the mold may be disposed.

(2) Step of placing concrete The space between the molds on one side and the other side is a concrete placement space, and the main body is arranged in this placement space as described in the step (1). Therefore, this main body is buried in concrete. At that time, since a connecting rod-like member is disposed inside the main body (through hole), the main body does not move due to a concrete placing pressure or the like, and is held in a predetermined position. It will be a thing.

(3) Step of extracting the connecting rod-shaped member from the through hole of the main body after the concrete is hardened As described above, the main body is embedded in the concrete. Since it is arranged in the hole), it can be easily extracted without requiring a special jig or a particularly strong force in the process of extracting it. As the connecting rod-shaped member is extracted, the presser or the like is removed, and the formwork is also removed at the same time.

(4) A step of inserting a fixing rod-like member into the through hole and screwing the fixing rod member into the fixing screw portion. For example, the main body has a first cylindrical portion, a central cylindrical portion, and a second cylindrical portion from one side to the other side. Are connected in series, a fixing rod-like member is inserted from one side and screwed into the fixing screw portion of the central cylinder portion.
In the case where the first cylindrical portion (A), the central cylindrical portion (A), the second cylindrical portion, the central cylindrical portion (B), and the first cylindrical portion (B) are connected in series in the main body. The fixing rod-shaped member is inserted from one side and screwed into the fixing screw portion of the central cylindrical portion (A), and the fixing rod-shaped member is also inserted from the other side to fix the central cylindrical portion (B). Screwed into the screw part.
In addition, from the viewpoint of heat insulation performance, etc., when the hole after extracting the connecting rod-shaped member is not used for screwing the fixing rod-shaped member, it is filled with a fixed or irregular shaped heat insulating material or mortar and plugged. preferable.

  Thus, in the construction method of the present invention, since the fixing rod-shaped member serves as an anchor material, it is not necessary to perform inking and the workability is excellent.

  And in the construction structure of the concrete wall of this invention obtained, since the bar member for a connection is not embed | buried ahead of the bar member for fixing, since heat transfer is cut off, heat insulation performance is not impaired.

As shown in FIGS. 2A to 2E, the concrete wall construction structure shown in FIG. 1 includes a construction support tool 3 (hereinafter simply referred to as a support tool) between the molds 1 and 2 on the other side. A main body 30 having one fixing screw portion 31 and a through hole 32 penetrating from one side to the other side, the connecting rod-like member 4, and the connecting rod-like member. 4 is a reference example including a fixing rod-shaped member 5 having a diameter larger than 4.

  Examples of the molds 1 and 2 include plywood (wood), reinforced plastic boards such as FRP, and heat insulating material (not removed). When a reinforced plastic board such as FRP is used, it can be removed and reused after placing concrete.

The through-hole 32 can be inserted with the fixing rod-like member 5 and the connecting rod-like member 4, and the member provided with this through-hole 32 is provided with a first through-hole 32 a into which the fixing rod-like member 5 can be inserted. It consists of the 1st cylinder part 33, the center cylinder part 34 provided with the screw part 31 for fixation, and the 2nd cylinder part 35 provided with the 2nd through-hole 32b which can insert the rod-shaped member 4 for a connection.
The fixing screw portion 31 is capable of screwing the fixing rod-like member 5. In the illustrated reference example , the fixing screw portion 31 is a female screw portion on the inner surface of the hexagon nut. .

In the illustrated reference example , the main body 30 includes cylindrical molded bodies 6A and 6B and a hexagon nut [31] as shown in FIG.
The cylindrical molded body 6A is made of a synthetic resin. The cylindrical cylindrical body 61 has a contact portion 62 that is expanded in diameter on one side and abuts on the mold, and a hexagon nut [31] on the other side. Is provided.
The cylindrical molded body 6 </ b> B is also made of synthetic resin, and includes a connecting portion 65 on one side of the cylindrical cylindrical body 64, which is fitted with a hexagon nut [31] and is fitted to the receiving portion 63.
The first cylindrical portion 33 corresponds to the cylindrical body 61 of the cylindrical molded body 6A and one side thereof, the second cylindrical portion 35 corresponds to the cylindrical body 64 of the cylindrical molded body 6B, and the center. The cylindrical portion 34 corresponds to a fitting portion between the receiving portion 63 and the connecting portion 65.

An example of constructing a concrete wall with the support 3 having such a configuration will be described with reference to the illustrated reference example .
In order to attach the support 3 to the molds 1 and 2, as shown in FIGS. 2 (a) and 2 (b), the cylindrical molded bodies 6A and 6B and the hexagon nut [31] are connected to form a through hole in advance. Attach it at a predetermined position between the punched molds 1 and 2.
The connecting rod-like member 4 is disposed in the formed through-hole 32 of the main body 30 and protrudes from the molds 1 and 2 on the one side and the other side, and is fixed by a presser (not shown). A concrete placement space is formed between the two.

FIG. 2C shows a state in which the concrete 7 is placed in the concrete placement space in this state, and the pressing tools and the molds 1 and 2 (not shown) are removed after the concrete is cured.
The main body 30 is embedded in the concrete 7. Since the connecting rod-like member 4 is disposed in the inside (through hole 32), the main body 30 is held at a predetermined position without moving. .

  Thereafter, the connecting rod-like member 4 was extracted from the through hole 32 of the main body 30 as shown in FIG.

In the case of the illustrated reference example , as shown in FIG. 2 (e), the fixing rod-like member 5 is inserted into the through hole 32 from one side and screwed into the fixing screw portion 31. The diameter of the second through hole 32b is made smaller than the diameter of the fixing rod-shaped member 5, or a stopper ring smaller than the diameter of the fixing rod-shaped member 5 is installed on the other side of the fixing screw portion 31 for fixing. The rod-like member 5 cannot penetrate deeper.

  And the construction structure of the concrete wall of FIG. 1 is adjusted to the projecting portion of the fixing bar-like member 5 by extending a heat insulating material 8C on the surface of one side of the constructed concrete wall 7 and projecting from it. A rafter 8A was attached via a metal fitting 8B, and an exterior material 8D was attached.

  Thus, the support 3 of the present invention can be used repeatedly by extracting the connecting rod-like member 4 as compared with the conventional structure in which the connecting rod-like member 4 is not removed and remains in the concrete wall. The member is not wasted and the heat insulation performance is not impaired.

  Moreover, the construction structure of the constructed concrete wall is excellent in workability because the fixing rod-shaped member 6 serves as an anchor material, so that it is not necessary to perform ink marking.

FIG. 3 shows various types of support tools 3A to 3F. In the construction method shown in FIG. 2, the pressing tool, the formwork and the like are set after the concrete corresponding to FIG. The removed state is shown.
3A is almost the same as FIG. 2C, and the support 3A is substantially the same as the support 3. FIG. In addition, the specification (after removal of a holding member) which used the cone-shaped holding member for the other end of the connecting rod-shaped member 4 is shown.
The support tool 3B shown in FIG. 3B is substantially the same as the support tool 3 except that the first cylindrical portion 33 is made of a straight pipe material (cylindrical body) 60a.
The support tool 3C shown in FIG. 3C is substantially the same as the support tool 3B except that the second cylinder portion 35 is made of a straight pipe material (cylinder) 60b.
The support tool 3D shown in FIG. 3D is the same as the support tool except that a different diameter socket 66 is used to connect the pipe material (cylinder body) 60b as the second cylinder part 35 to the central cylinder part 34. It is almost the same as 3C.
The support tool 3E shown in FIG. 3 (e) is substantially the same as the support tool 3C except for the specification (embedded type) in which the hexagon nut [31] is covered with resin.
The support 3F shown in FIG. 3 (f) is a central cylindrical portion having a specification in which the hexagonal nut [31] is replaced with a disk plate [31 ′] subjected to female thread processing, and the disk plate [31 ′] is covered with a resin. In this example, the central cylindrical portion 34 is provided at two locations. In addition, the specification (after removal of a holding member) which used the cone-shaped holding member for the other end of the connecting rod-shaped member 4 is shown.

Unlike the other reference examples , the support 3F of FIG. 3 (f) uses two first cylindrical portions 33 and two central cylindrical portions 34, and the first cylindrical portion 33, the central cylindrical portion 34, and the second cylindrical portion 34 are used. It is an Example of this invention with which the cylinder part 35, the center cylinder part 34, and the 1st cylinder part 33 are connected in series.
In this example, as described above, a structure in which the disk plate [31 ′] is covered with resin is used as the two central cylindrical portions 34 including the fixing screw portions 31, and the two first cylindrical portions 33 are used. As a second tubular portion 35, straight tubular pipe members (cylinders) 60c and 60e are used.

  Of these supports 3A to 3F, in support tools 3B to 3F using a straight pipe material (cylinder material), for example, a low-priced product such as a resin pipe material can be selected and used, so that the manufacturing cost is low. The practical value is extremely high.

The main body 30 of the support tool 3G shown in FIG. 4 has a structure in which the disk plate [31 ′] is covered with resin as the two central cylindrical portions 34, like the support tool 3F of FIG. 3 (f). However, a substantially bowl-shaped heat insulating material pressing member 36 is fitted in the middle of the first cylindrical portion 33 positioned on one side.
As shown in FIG. 5, the heat insulating material pressing member 36 is disposed along the concrete placement space side of the heat insulating material (combined) used as the mold 1 ′ on one side.

An example of constructing a concrete wall with the support 3G having the above-described configuration will be described with reference to the illustrated embodiment.
First, as shown to Fig.5 (a), the 1st cylinder part 33, the center cylinder part 34, the 2nd cylinder part 35, the center cylinder part 34, the 1st cylinder part 33 are connected in series, and a through-hole is beforehand formed. Attach to the predetermined positions 1 'and 2 between the punched molds. In addition, 8E is a cone-shaped holding member.
Then, the connecting rod-like member 4 is disposed in the formed through hole 32 of the main body 30, protrudes from the mold frames 1 ′ and 2 on the one side and the other side, and is fixed by a presser (not shown). , 2 forms a concrete placement space.

FIG. 5B shows a state in which the concrete 7 is placed in the concrete placement space in this state, and the pressing tool and the mold 2 (not shown) are removed after the concrete is cured.
The main body 30 is embedded in the concrete 7. Since the connecting rod-like member 4 is disposed in the inside (through hole 32), the main body 30 is held at a predetermined position without moving. .
Note that the mold 1 'on one side is a heat insulating material (also used) as described above and is a discarded mold that is not removed, but the mold 2 on the other side is the same as in other reference examples and examples. Fig. 5 shows a state where the concrete 7 is removed after being hardened.

  Thereafter, as shown in FIG. 5C, the connecting rod-like member 4 was extracted from the through hole 32 of the main body 30, and the holding member 8E was also removed at the same time.

  FIG. 5D shows a state in which the fixing rod-like member 5 is inserted into the through hole 32 from one side and screwed into the fixing screw portion 31. Further, a rafter 8A was attached to the protruding portion of the fixing rod-like member 5 protruding from the mold 1 'on one side via an adjustment fitting 8B, and an exterior material 8D was attached.

FIG. 6A shows an example of a high strength specification, which is the same in that the fixing rod-like member 5 ′ is inserted into the through hole 32 from one side and screwed into the fixing screw portion 31. FIG. However, since two central cylindrical portions 34 are formed on the support 3G, the fixing rod-like member 5 'is fixed to the fixing screw portions 31, 31 formed on the two central cylindrical portions 34. Are screwed together.
The fixing rod-shaped member 5 ′ used in this embodiment is longer than the fixing rod-shaped member 5 in the above embodiment, but is supported at two places, so The strength is extremely high.

FIG. 6B shows an example of the specification using the angle 9 on the indoor side which is the other side when one side is the outdoor side and the other side and the indoor side.
That is, after the concrete 7 is hardened, the fixing bar 5 is inserted into the through hole 32 from one side and screwed into the fixing screw 31, and the fixing bar 5 is also inserted into the through hole 32 from the other side. Insert and screw into the fixing screw 31. Then, the rafter 8A is attached to the protruding portion of the fixing bar-like member 5 protruding from the surface on one side via the adjustment fitting 8B, the exterior material 8D is attached, and the fixing bar-like shape protruding from the surface on the other side. An L-shaped angle 9 was attached to the protruding portion of the member 5.
In this way, by making it possible to attach an angle etc., various members such as joinery and supports, or interior wall cosmetics, etc. can be directly or indirectly attached to the wall surface on the indoor side, furniture, stairs, etc. Can be installed easily. Further, in this embodiment, the L-shaped angle 9 is attached to the fixing rod-shaped member 5, but various shapes can be attached as long as it is a base material for attaching or supporting furniture or the like. . Furthermore, you may attach directly to the fixing rod-shaped member 5 without passing through an angle or the like.
On the other hand, on the outdoor concrete surface, in addition to the illustrated exterior material, a ladder for inspection or evacuation may be attached.

It is sectional drawing which shows one reference example of the construction structure of the concrete wall of this invention. It is sectional drawing which shows a part of construction method of the support tool used for FIG. 1, (a) Sectional drawing which shows the state which attached the support tool between mold forms, (b) The exploded view of a support tool, c) A cross-sectional view showing a state in which concrete is placed, (d) a cross-sectional view showing a state where a connecting bar-like member is extracted, and (e) a cross-sectional view showing a state where a fixing bar-like member is inserted. (A)- (e) It is sectional drawing which shows the other reference example of a support tool, (f) It is sectional drawing which shows one Example of a support tool . (A) It is a disassembled perspective view which shows a part of other Example of the main body of a support tool, (b) It is a perspective view which shows the state which connected them. (A) A cross-sectional view showing a state in which the support of FIG. 4 is attached between the molds, (b) a cross-sectional view showing a state in which the concrete is placed and the other formwork is removed, (c) a connecting rod shape It is sectional drawing which shows the state which extracted the member, (d) It is sectional drawing which shows the state which inserted the rod-shaped member for fixation. (A) It is sectional drawing which shows the one aspect | mode which uses the support tool of FIG. 4 for a high intensity | strength specification, (b) It is sectional drawing which shows the one aspect | mode using the support tool of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 (One side) Formwork 2 (Other side) Formwork 3 Support tool 31 Fixing screw part 32 Through-hole 4 Connecting rod-shaped member 5 Fixing rod-shaped member

Claims (3)

A support for constructing a concrete wall while maintaining a space between the molds on one side and the other side,
The support has a plurality of fixing screw portions, a main body having a through-hole penetrating from one side to the other side, a connecting rod-shaped member, and a fixing rod-shaped member having a diameter larger than that of the connecting rod-shaped member. Consists of
The through-hole can be inserted with a fixing rod-shaped member and a connecting rod-shaped member, and the fixing rod-shaped member can be screwed into the fixing screw portion. Ingredients. A construction structure of a concrete wall constructed by arranging the support according to claim 1 between one side and the other side of the formwork,
A main body is disposed between the molds, concrete is placed therein, a fixing rod-like member is inserted into a through hole of the main body embedded in the concrete, and is screwed into a fixing screw portion. A concrete wall construction structure. A concrete wall construction method in which a concrete wall is constructed by placing the support according to claim 1 between one side and the other side of the formwork and placing concrete.
A step of attaching the main body between the molds, a step of placing concrete, a step of extracting the connecting bar-like member from the through-hole of the main body after the concrete is hardened, and a fixing bar-like member being inserted into the through-hole A concrete wall construction method comprising: a step of screwing into a fixing screw portion.

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