JP2015096696A - Form support tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form support tool for minimizing an increase in construction cost of a stacking block, satisfying even a construction standard of concrete, and having no influence on strength of the concrete.SOLUTION: The form support tool comprises a body 10 made by providing a leg part 12 to be inserted into a backfilling material on its one end side, a holding part 30 projected in the vicinity of the other end of the body 10 and holding a form, and a spacer part 40 projected by making a position different by substantially 180° around the axis in the longitudinal direction of a part except for the leg part 12 of the body 10 from the holding part 30 in the vicinity of the leg part 12 of the body 10 and forming a proper clearance between the stacking block and the form, and the spacer part 40 comprises an abutting part 41 separately arranged by a predetermined distance from the body 10 and abutting on the stacking block, and a rod-like arm part 42 extended from the body 10 and supporting the abutting part 41, and the abutting part 41 is supported from the other end side of the body 10 by the arm part 42.

Description

  The present invention relates to a formwork used to place concrete on a slope, a seawall or the like, and a formwork support for supporting a so-called die-cutting form.

  In order to prevent the slopes and the seawalls from collapsing, a construction for covering the covering surface with a so-called building block such as a cognitive block is widely performed. Conventionally, in order to construct a stacking block, each stacking block is laminated on each stacking block at the lower end so that adjacent stacking blocks are in contact with each other, and a flat formwork is placed on the back side of the stacking blocks. After arranging so that there is one per block, a backfill material such as chestnut is inserted between each formwork and the covering surface to approximately half the height of the stacking block. At that time, a spacer block is interposed between each mold and the back of the stacking block. Then, the concrete surrounded by the filling is filled in the area surrounded by each mold frame, each stack block of the corresponding stage, each stack block one stage below, and each mold frame, and after the filled concrete is hardened, each mold Pull out the frame to complete the step. Such operations are repeated until the number of stacked blocks reaches the required number. In addition, the formwork which is pulled out after the filled concrete is cured may be referred to as a formwork frame.

  However, in such a conventional construction method, since the worker supported the formwork from the placement of the formwork on the back side of the stacking block to the filling of the concrete for loading, many construction work was required. In addition to the need for workers, there was a risk of damage to the workers supporting the formwork due to the backfill material input equipment and the concrete filling equipment. Therefore, the following formwork support has been developed (see Patent Document 1).

  FIG. 10 is a view showing a usage mode of the formwork support disclosed in Patent Document 1, in which 50 is a formwork support and B is a stack block having a substantially quadrangular pyramid shape. The formwork support 50 is configured such that one end side of a linear wire is shaped into a triangle to form the base portion 60, while the other end of the wire is placed on one side of the triangle including the vertex from the position of the vertex of the triangle. After forming the sandwiching portion 70 that is bent in a U shape in parallel with the side and with a predetermined gap from the side to sandwich the formwork, further orthogonally to the side, The spacer portion 80 is bent in a direction away from the side.

  In order to construct the stacking block B by using such a formwork support 50, as shown in FIG. 10, the formwork support 50 is placed on the back side of the stacking block B, and the sandwiching unit 70 places the stacking block B. The plate-shaped formwork W is fitted to the clamping part 70 of the formwork support 50 after the spacer part 80 is disposed so as to be in contact with the back part of the stacking block B while being positioned on the installed surface side. At this time, since the mold W is fitted into the holding portions 60 (60) of the two mold supports 50 (50) at least appropriately separated from each other, both the mold supports 50 (50) and the mold W is independent. In this state, after inserting the backfill material U to the appropriate position above the base portion 60 of the mold support 50 on the back side of the mold W, the concrete C is placed between the stacking block B and the mold W. Then, a waist-in concrete CD and a back-in concrete CU are formed. And the formwork W is pulled out at an appropriate timing, and the construction of the step is completed.

JP 2008-21396

  In such a conventional formwork support 50, since both the formwork support 50 (50) and the formwork W are self-supporting as described above, an operator for supporting the formwork W is unnecessary. Although the construction work can be carried out safely, the base 60 of the mold support 50 is in the backfill material U, and the clamping part 70 and the spacer 80 of the mold support 50 are concrete. It will be buried in C. Since the sandwiching portion 70 and the spacer portion 80 embedded in the concrete C are foreign matters on the concrete C construction standard, they do not satisfy the construction standard and greatly affect the strength of the concrete C. Therefore, such a formwork support 50 cannot be used for the construction of a stacking block. On the other hand, even when the concrete construction standards are not taken into account, the formwork support 50 is embedded in the construction area, and therefore, it is disposable and there is a problem that the construction cost of the stacking blocks increases.

  The present invention has been made in view of such circumstances, and suppresses an increase in the construction cost of the stacking blocks as much as possible, satisfies the concrete construction standards, and affects the strength of the concrete. Provide no formwork support.

  (1) A formwork support according to the present invention is a formwork that supports a formwork interposed between a stacking block stacked in a construction target area and a backfill material filled on the back side of the stacking block. In the support tool, a rod-shaped main body provided with a leg portion to be inserted into the backfill material on one end side thereof, and a holding portion that protrudes near the other end of the main body and holds the mold It is characterized by comprising.

  The formwork support of the present invention includes a rod-shaped main body. One end side of the main body is made into a leg part, and the main body can become self-supporting by inserting this leg part into the backfill material filled on the back side of the stacking block laminated in the construction target area. Yes. In the vicinity of the other end of the main body, there is a projecting portion for sandwiching the mold interposed between the stacking block and the backfilling material, and by holding the edge of the formwork in the sandwiching portion. As described above, the mold can be supported in a state where the main body is self-supporting.

  In such a formwork support, as described above, the edge part of the formwork is held by the holding part and the leg part of the main body is inserted into the backfill material, and the formwork is held in a state where the main body is self-supporting. In this state, the backfill material is put on the back side of the mold and the concrete is put to the appropriate depth on the stack block side of the mold, and then the mold support is pulled out from the backfill material and the concrete. As described above, since the clamping part for clamping the mold is disposed on the other end side of the main body, it is pulled out from the mold of the clamping part by the operation of pulling out the mold support, and thus only the mold support is pulled out. be able to. At this time, since the formwork is supported so as to be sandwiched between the backfill material and the concrete, the formwork is independent even after the formwork support is pulled out. Then, after further filling the backfill material and concrete to a predetermined depth, the mold is pulled out. Depending on the construction method, the formwork may not be pulled out.

  Since the drawn-out formwork support can be used repeatedly, an increase in the construction cost of the stacking blocks can be suppressed as much as possible. Further, since the formwork support does not remain in the applied concrete, it satisfies the concrete construction standards and does not affect the strength of the concrete.

  (2) A formwork support according to the present invention is a formwork that supports a formwork interposed between a stacking block stacked in a construction target area and a backfill material filled on the back side of the stacking block. In the support tool, a leg-shaped main body provided with a leg portion to be inserted into the backfill material on one end side thereof, a projecting portion in the vicinity of the other end of the main body, and a sandwiching portion for sandwiching the formwork, In the vicinity of the leg of the main body, the sandwiching portion is provided with a projecting position of approximately 180 ° around the longitudinal axis of the portion other than the leg of the main body, and is appropriately provided between the stacking block and the formwork. And a spacer portion that forms a gap between the main body and the spacer portion. The spacer portion is spaced apart from the main body by a predetermined distance and extends from the main body. A bar-like arm portion that supports the contact portion, and the contact portion Characterized in that it is supported from the other end of the body by the arms.

  In the formwork support of the present invention, one end side of the rod-shaped main body is formed as a leg portion as before, and this leg is placed in the backfill material filled on the back side of the stacking block laminated in the construction target area. By inserting the portion, the main body can stand on its own. In addition, a clamping part for clamping the mold is protruded in the vicinity of the other end of the main body, and the mold frame is held by the clamping part to support the mold in a state where the main body is self-supporting. Can do.

  On the other hand, in the vicinity of the leg portion of the main body, a spacer portion for forming an appropriate gap between the stacking block and the mold is provided, and the above-described sandwiching portion is substantially around the longitudinal axis of the portion other than the leg portion of the main body. The protrusions are provided with different 180 ° positions. The spacer portion includes a contact portion that contacts the stacking block, and a rod-shaped arm portion that extends from the main body and supports the contact portion. The contact portion is supported by the arm portion from the other end side of the main body at a position separated from the main body by a predetermined distance.

  In such a formwork supporter, as before, the edge of the formwork is held by the holding part and the legs of the main body are inserted into the backfill material, and the formwork is held in a state where the main body is self-supporting. In this state, the backfill material is put on the back side of the mold and the concrete is put to the appropriate depth on the stack block side of the mold, and then the mold support is pulled out from the backfill material and the concrete. As before, the clamping part for clamping the formwork is arranged on the other end side of the main body, so that by pulling out the formwork support, it is pulled out from the formwork of the holding part, and therefore only the formwork support is pulled out. Can do. Then, after further filling the backfill material and concrete to a predetermined depth, the mold is pulled out.

  As before, since the drawn-out form supporter can be used repeatedly, an increase in the construction cost of the stacking blocks can be suppressed as much as possible. Further, since the formwork support does not remain in the applied concrete, it satisfies the concrete construction standards and does not affect the strength of the concrete.

  Further, in the formwork support tool of the present invention, the contact portion constituting the spacer portion is supported from the other end side of the main body at a position separated by a predetermined distance from the main body by the arm portion. By adjusting the depth of the concrete to be poured in so that the entire arm portion is not buried, the volume of the hole generated when the formwork support is pulled out can be made as small as possible. In such a case, the hole can be eliminated by treating the surface of the supplied concrete with a vibrator. Therefore, it has no effect on the strength of the placed concrete. Furthermore, the finishing work of filling the hole with concrete is unnecessary.

  In addition, since the total surface area of the spacer portion embedded in the concrete is relatively narrow, the work of pulling out the formwork support from the poured concrete can be easily and reliably performed. On the other hand, the abutting portion constituting the spacer portion is supported from the other end side of the main body at a position spaced apart from the main body by the arm portion, so that there is sufficient concrete between the main body and the abutting portion. The continuity of the concrete filled and charged is maintained.

  (3) The formwork support according to the present invention is characterized in that the arm portion is convex toward the other end of the main body.

  In the formwork support of the present invention, since the arm portion constituting the spacer portion is convex toward the other end side of the main body, even when the concrete is poured to a depth at which all the contact portions are buried. This convex part can be located above the surface of the concrete. As a result, it is possible to reduce as much as possible the effect on the concrete to be introduced in the previous stage.

  (4) In the formwork support according to the present invention, the rod-shaped contact portion is disposed so that the longitudinal axis thereof is parallel to the longitudinal axis of the portion other than the leg portion of the main body. It is characterized by being.

  In the formwork support of the present invention, the rod-shaped contact portion is disposed so that the longitudinal axis thereof is parallel to the longitudinal axis of the portion other than the leg portion of the main body. When the mold support is pulled out, the main body and the contact portion are pulled out in parallel. In the case of a rod-shaped contact portion, a hole having a diameter of a cross section perpendicular to the longitudinal direction is formed in the concrete, so that the size of the hole can be made as small as possible. Therefore, the influence on the supplied concrete can be reduced as much as possible, and the hole disappearance process by the vibrator can be easily and reliably performed.

  (5) In the formwork support according to the present invention, the holding part is extended from the main body so that the edge of the formwork can be held between the holding part and the main body. The portion to be brought into contact with the edge of the mold is tapered so as to be gradually separated from the main body toward the tip of the sandwiching portion.

  In the formwork support tool of the present invention, the holding part is extended from the main body so that the edge of the formwork can be held between the holding part and the main body. Since the portion that is in contact with the edge of the taper gradually tapers away from the main body toward the tip of the sandwiching portion, it is possible to firmly sandwich the edge even in the case of a mold having different thickness dimensions. it can.

  (6) The formwork support according to the present invention is characterized in that the holding portion is composed of a rod-shaped member or a band plate-shaped member.

  In the formwork support tool of the present invention, the holding part is composed of a rod-like member or a band plate-like member. When the sandwiching portion is formed of a rod-shaped member, the sandwiching portion having a relatively high strength can be formed at a low cost. Here, it is good to comprise the part which contact | abutted the edge part of a formwork made into a plane like a prismatic rod-shaped member. As a result, at least the corners of the edge of the formwork are held in a linear shape, so that the body rotates around the clamping part due to an impact when the formwork support is driven into the backfill material, so-called rolling occurs. Can be prevented. On the other hand, when the sandwiching portion is formed of a band plate-like member, the occurrence of rolling can be prevented as before, and the sandwiching portion can be further reduced in weight as much as possible.

  (7) The formwork support according to the present invention has a handle portion at a position that is near the other end of the main body and is different by about 90 ° around a longitudinal axis of a portion other than the spacer portion and the leg portion of the main body. It is characterized by protruding.

  In the formwork support tool of the present invention, the handle portion protruding near the other end of the main body has a position different by about 90 ° around the longitudinal axis of the portion other than the spacer portion and the leg portion of the main body. When the spacer portion is brought into contact with the stacking block, the handle portion is in a posture parallel to the width direction perpendicular to the depth direction of the stacking block. The work area when putting concrete becomes narrower as the number of stacking blocks increases, but as described above, the handle is in a posture parallel to the width direction perpendicular to the depth direction of the stacking blocks. Therefore, the handle portion does not get in the way when the concrete is thrown in, and the placing operation can be carried out smoothly and safely.

It is a front view of the formwork support tool which concerns on this invention. It is a side view of the mold support which concerns on this invention. It is explanatory drawing explaining the use condition of the formwork support tool which concerns on this invention. It is explanatory drawing explaining the procedure which constructs a stacking block using the formwork support tool which concerns on this invention. It is explanatory drawing explaining the procedure which constructs a stacking block using the formwork support tool which concerns on this invention. It is explanatory drawing explaining the procedure which constructs a stacking block using the formwork support tool which concerns on this invention. It is a front view of the formwork support which concerns on the 2nd form for implementing this invention. It is a side view of the formwork support shown in FIG. It is explanatory drawing explaining the use condition of the formwork support shown in FIG.7 and FIG.8. It is drawing which shows the usage condition of the conventional mold support.

Hereinafter, the formwork support according to the present invention will be described in detail with reference to the drawings.
The formwork support described in the present embodiment is an example for explaining the gist of the present invention, and it goes without saying that the present invention includes modifications and alterations without departing from the gist.

(First embodiment for carrying out the invention)
1 and 2 are a front view and a side view of a formwork support according to the present invention.
As shown in FIGS. 1 and 2, the mold support 1 includes a main body 10 using a metal bar having a diameter of about 8 mm to about 15 mm, and one end of the main body 10 is a leg portion described later. It ’s twelve. Further, a handle portion 20 for pushing and pulling out the main body 10 protrudes from at least one side peripheral surface in the vicinity of the other end of the main body 10. For example, as shown in FIG. 1, the handle portion 20 is formed in a roll U shape so that an operator can hold it or hang a wire or a rope.

  In addition, the flat cross-sectional shape of the main body 10 described above may be circular or polygonal. Moreover, in the formwork support 1 shown in FIG. 1, although the case where the rollover U-shaped handle part 20 was provided was demonstrated, this invention is not limited to this, A U-shape, a square shape, or An appropriate closed shape such as an arc shape may be used, or an appropriate open shape such as a linear shape, a rollover L shape, or a knob shape may be used. Furthermore, the handle portions 20 and 20 may be provided so as to project from the peripheral surfaces of the both side portions of the main body 10 so that the two handle portions 20 and 20 are provided. On the other hand, a handle 20 may be provided at the other end of the main body 10.

  Incidentally, as shown in FIG. 2, a substantially crank-shaped rod-shaped clamping portion 30 that clamps a plate-shaped mold frame is parallel to the main body 10 on the back peripheral surface near the other end of the main body 10 as will be described later. The end of the holding part 30 on the other end side of the main body 10 is fixed to the peripheral surface of the main body 10. A gap is formed between the other end of the sandwiching portion 30 and the main body 10 so as to be appropriately larger than the thickness of the mold, and the edge is inserted into the gap. The frame is clamped between the clamping unit 30 and the main body 10.

  Further, a substantially central portion (base end portion) in the length direction of the sandwiching portion 30 has a taper that gradually separates from the peripheral surface of the main body 10 toward the other end portion of the sandwiching portion 30, and has a different thickness depending on the taper. Even if it is a formwork of a size, the edge part can be clamped firmly.

  In addition, the planar cross-sectional shape of the clamping part 30 may be circular or polygonal.

  By the way, a region on the other end side of the main body 10 by an appropriate dimension from one end of the main body 10 is formed as a leg portion 12 that enters a backfill material to be described later. Only bent. The bending of the leg portion 12 may be determined at an angle corresponding to the inclination of the construction object, but the axis L1 in which the central axis of the region other than the leg portion 12 of the main body 10 is extended to the leg portion 12 side, and the leg portion The angle α formed by the 12 central axes L2 is preferably an appropriate angle of 2 ° to 5 °.

  More specifically, when the construction target is a 1-minute gradient to a 2-minute gradient, the angle α formed is set to be about 2 ° to 3 °, and the construction target is a 3-minute gradient to a 5-minute gradient. In this case, the formed angle α is set to be about 4 °, and when the construction target is a 6-minute gradient to a 7-minute gradient, the formed angle α is preferably set to about 5 °.

  If the upper block is constructed after constructing the lower block by constructing the building block and the backfilling material and the backfill concrete, and if necessary, the backfilling concrete, the upper stacking block becomes the construction target gradient on the lower building block. The mold supporter 1 is inserted into the boundary surface between the backfill material and the upper stacking block, but the legs of the main body are not bent. When the frame support is used, the legs of the main body may enter along the boundary surface between the backfill material and the upper stacking block and come into contact with the lower trunk concrete or backfill concrete. Such a phenomenon may occur even when the formed angle α is less than 2 °.

  However, by setting the angle α made by the construction object according to the gradient as described above, the main body 10 can be inserted even if the mold support 1 is inserted into the boundary surface between the backfill material and the upper stacking block. Since the leg part 12 enters the backfilling material side by an appropriate distance from the interface between the backfilling material and the upper stacking block, the leg part 12 abuts against the lower trunking concrete or the backfilling concrete. Can be avoided. Therefore, the mold support 1 can be smoothly advanced to the required depth into the backfill material.

  On the other hand, if the formed angle α exceeds 5 °, the leg portion 12 of the main body 10 may be further bent by the force applied to the mold support 1 when inserted into the backfill material.

  The ends of the leg portions 12 are sharpened, which makes it easy to insert the leg portions 12 into the backfill material.

  The length of the leg portion 12 can be determined as long as it is a dimension that allows the formwork held by the holding portion 30 to be self-supporting, and can be set to about 300 to 400 mm, for example. The length of the main body 10 may be determined according to the dimensions of the mold, but can be set to about 800 to 900 mm, for example.

  FIG. 3 is an explanatory view for explaining the use state of the formwork support according to the present invention, and shows a case where backfill concrete is also placed. In the figure, parts corresponding to those shown in FIGS. 1 and 2 are denoted by the same reference numerals and description thereof is omitted.

  The stacking block B is formed by extending a polygonal frustum-shaped body portion BD on the back of a polygonal plate-like (hexagonal plate-like in FIG. 3) front plate portion BP disposed on the surface of the retaining wall. In the case shown in FIG. 3, the upper stack blocks B, B,... Are placed between the lower stack blocks B, B, B, B,. It is. Behind the appropriate stacking block B in the upper stage is the mold support 1, and an abutting portion 41 of a spacer part 40 described later of the mold support 1 is the back part of the trunk BD of the stacking block B (holding edge). The handle portion 20 of the mold support 1 is oriented in the lateral direction.

  Further, in the case shown in FIG. 3, the formwork support 1 is also arranged in the same manner as the front side behind the second stacking block B in the lateral direction from the stacking block B described above. As will be described later, the leg portions 12 and 12 of the both mold support members 1 and 1 are respectively inserted into the back-filling material provided at the lower stage, whereby both the mold support members 1 and 1 are self-supporting. .

  Behind these stacking blocks B, B, B, a horizontally long rectangular plate-like formwork W, also called a punching formwork, is arranged. The upper edge of the mold W is clamped at an appropriate distance by the clamping sections 30 and 30 provided on the two mold supports 1 and 1 described above. It is supported in a standing state by the support tools 1 and 1. Then, concrete is placed between the formwork W and the front plate portions BP, BP, BP of the stacking blocks B, B, B to surround the trunk portions BD, BD, BD of the stacking blocks B, B, B. And the backfilled concrete interposed between the back part of the body parts BD, BD and BD and the formwork W.

  By the way, as shown in FIG. 2, the back of the stacking block is placed on the front surface of the main body 10 and slightly behind the leg portion 12 of the main body 10 in order to construct backfill concrete. A spacer portion 40 is provided between which a gap is formed. In the case shown in FIG. 2, the spacer portion 40 is formed of a bar having a diameter of about 8 mm to 15 mm in a substantially inverted U shape, and the one arm portion separated from the main body 10 is as described above. A rod-shaped contact portion 41 is formed to contact the back portion of the body portion BD (see FIG. 3) of the stacking block B. The abutting portion 41 is located at a position separated from the main body 10 by a predetermined dimension by an arm portion 42 extending from the main body 10, and the central axis of the abutting portion 41 is a central axis in a region other than the leg portion 12 of the main body 10 It is supported so that it may be parallel to. The arm portion 42 is convex toward the other end side of the main body 10 and supports the contact portion 41 from the other end side of the main body 10.

  In addition, what is necessary is just to determine the dimension between the contact part 41 and the main body 10 with construction standards, but generally it sets to 10 cm, 15 cm, or 20 cm. On the other hand, although the dimension of the spacer part 40 and the attachment position of the spacer part 40 to the main body 10 can be set as appropriate, the ceiling part of the arm part 42 was placed when both of the concrete parts were placed. It is set so that it can protrude from the surface of the concrete to an appropriate height position above. In the present embodiment, the case where the rod-like contact portion 41 is provided has been described, but an appropriate shape such as an arc shape or a polygonal shape may be used.

  As a result, the contact portion 41 of the spacer portion 40 is buried in the placed concrete, and the projecting ceiling portion of the arm portion 42 is not buried. Therefore, the formwork support 1 is removed from the placed concrete. Even if it is pulled out, it is only necessary to leave a rod-like hole with the contact part 41 pulled out in the concrete, and the diameter of the hole is about 8 mm to 15 mm, and the total volume of the hole is also compared. The hole can be eliminated by treating the surface of the placed concrete with a vibrator. Therefore, it has no effect on the strength of the placed concrete. Furthermore, the finishing work of filling the hole with concrete is unnecessary.

  Further, since the total surface area of the contact part 41 of the spacer part 40 and the base part of the arm part 42 and the main body 10 is also relatively narrow, the work of pulling out the mold support 1 from the placed concrete is easy and reliable. Can be implemented. On the other hand, since the contact part 41 of the spacer part 40 is separated from the main body 10, the concrete is sufficiently filled between the main body 10 and the contact part 41, and the continuity of the placed concrete is maintained. It is.

  In addition, when the formwork support tool 1 is pulled out from the placed concrete, a concave portion relating to the base end portion of the main body 10 and the arm portion 42 is also formed, but the concave portion can be eliminated by the vibrator treatment described above. . In addition, even when the concave portion cannot be sufficiently eliminated, the position where the concave portion is generated is a surface that comes into contact with the backfill material of the placed concrete, so that it does not become a defect of the placed concrete. .

  In the present embodiment, the case where the inverted U-shaped spacer portion 40 is provided has been described. However, the present invention is not limited to this, and a rectangular inverted U-shape, an inverted V-shape, an inverted L-shape, or the like is appropriately used. Can be made. However, preferably, the contact portion 41 of the spacer portion 40 is disposed so as to be parallel to the portion other than the leg portion 12 of the main body 10. Thus, when the formwork support 1 is pulled out from the placed concrete, the longitudinal axis of the contact portion 41 of the spacer portion 40 and the longitudinal axis of the portion other than the leg portion 12 of the main body 10 are parallel to each other. Therefore, the drawing direction of the abutting portion 41 and the drawing direction of the mold support 1 coincide with each other, and the volume of the hole formed after the mold support 1 is pulled out from the placed concrete as much as possible. Can be made smaller.

  4-6 is explanatory drawing explaining the procedure which constructs a building block using the formwork support tool which concerns on this invention. In these drawings, parts corresponding to those shown in FIGS. 1 to 3 are denoted by the same reference numerals.

  As shown in FIG. 4, a stacking block B, concrete C made of infilled concrete and backfilled concrete, and a backfilling material U made of crusher run and / or chestnut stone have already been installed in the lower stage. Further, a concrete adjusting portion CT for adjusting the height of the stone S for supporting the trunk portion BD of the upper stacking block B is formed on the surface of the lower backfilled concrete, and on the adjusting portion CT. The stone S is placed. The upper stack block B to be constructed is placed with a predetermined gradient so that the front plate portion BP is flush with the front plate portion BP of the lower stack block B, and the upper stack block B The tail portion of the body portion BD is placed on the stone S. In addition, the adjustment part CT and the setting stone S should just be provided according to the condition of the place, and either one or neither may be provided.

  In this state, the operator grasps the handle portion 20 to position the mold support 1 on the boundary between the body BD of the lower stacking block B and the backfill material U, and the spacer of the mold support 1 The leg portion 12 of the mold support 1 is made to enter the backfill material U to an appropriate depth so that the contact portion 41 of the portion 40 contacts the back portion of the trunk portion BD of the upper stacking block B. At this time, as shown in FIG. 4, the handle 20 of the mold support 1 is oriented in the lateral direction. Further, the mold support 1 is self-supporting, and the worker can move away from the mold support 1 and perform the next operation.

  Then, the worker raises the formwork W and arranges the upper edge of the formwork W so as to enter the clamping part 30 of the formwork support 1, and then the handle 20 of the formwork support 1. And the leg 12 is further inserted into the backfill material U. As a result, the clamping portion 30 is firmly clamped at the upper edge of the mold W, and the mold W is supported by the mold support 1 so that the mold W is self-supporting without supporting the work.

  Next, as shown in FIG. 5, the worker throws the backfill material U into the back of the formwork W to a position approximately half the required depth. At this time, a force toward the stacking block B is applied to the mold W by the backfill material U, but the contact portion 41 of the spacer section 40 of the mold support 1 is the back of the trunk BD of the stacking block B. Since it abuts against the pressure, the pressure can be counteracted.

  In the previous operation, even if there is a gap between the contact portion 41 of the spacer portion 40 of the mold support 1 and the body portion BD of the stack block B, the mold W is interposed as described above. Since the force toward the stacking block B is applied, the gap is eliminated.

  Next, the worker places concrete between the surface plate part BP of the upper stack block B and the formwork W to an appropriate depth so that the convex part of the arm part 42 of the spacer part 40 is not buried. The body-filled concrete CD surrounding the body part BD and the back-filled concrete CU interposed between the back part of the body part BD and the formwork W are formed. As a result, the lower region of the mold W is sandwiched between the backfill material U and the backfill concrete CU, so that it can stand on its own regardless of the mold support 1.

  At this time, as described above, the handle portion 20 of the formwork support 1 is oriented in the lateral direction, so that when the concrete is placed, the handle portion 20 does not get in the way, and the placement work is performed smoothly and safely. can do.

  Then, the worker grasps the handle portion 20 of the formwork support 1 at an appropriate timing and pulls out the formwork support 1 and then processes the surface of the concrete placed on the upper stage with a vibrator (not shown). Thus, the hole generated when the mold support 1 is pulled out is eliminated.

  Then, as shown in FIG. 6, the worker puts the backfilling material U to a height position near the upper edge of the formwork W, and reaches a height position substantially the same as the height of the surface of the backfilling material U. After placing the concrete C, the formwork W is pulled out at an appropriate timing. After this, the surface of the placed concrete C may be treated with a vibrator (not shown) so that the traces generated when the mold W is pulled out may be eliminated.

  Depending on the construction method, the formwork W may be buried without being pulled out. In such a case, the traces due to the drawing of the formwork W as described above do not occur, so that post-processing is also unnecessary.

(Second embodiment for carrying out the invention)
FIG. 7 is a front view of a formwork support according to a second embodiment for carrying out the present invention, and FIG. 8 is a side view of the formwork support shown in FIG. In both figures, parts corresponding to those shown in FIGS. 1 and 2 are given the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 7 and 8, in the present formwork support 1a, the central axis of the main body 10 and the central axis of the leg 12a are coaxial, and the main body 10 and the leg 12a are It is in a straight line.

  On the other hand, the spacer portion 40a has an inverted L shape, and the contact portion 41a that contacts the back portion of the stacking block is in a posture parallel to the main body 10 so that the spacer portion 40a is positioned between the contact portion 41a. The abutting portion 41a is supported from the other end side of the main body 10 by the interposed arm portion 42a. Thus, the manufacturing cost of a spacer part can be made as cheap as possible by applying the inverted L-shaped spacer part 40a. The spacer portion 40a may have a diameter larger than that of the main body 10, and may be fully or partially quenched as necessary. As a result, the spacer portion 40a can maintain a required strength.

  By the way, the clamping part 30a is being fixed to the surrounding surface of the main body 10 near the other end. The sandwiching portion 30a has a belt-like shape, and is bent from the base end portion 32a on one end side by an appropriate dimension at a position on the other end side so that the side view has a square shape. The clamping portion 30a has a base end portion 32a fixed to the peripheral surface of the back portion in the vicinity of the other end of the main body 10 so that the other end hangs down to the other end side of the main body 10, whereby the clamping portion 30a is fixed to the other end of the main body 10. The taper gradually tapers away from the peripheral surface of the main body 10 as it goes toward.

  Although the dimension of the clamping part 30a can be determined suitably, for example, the width can be about 2 cm to about 3 cm and the length can be about 12 cm to about 15 cm. Moreover, the dimension between the other end of the clamping part 30a and the surrounding surface of the main body 10 is good to be about 2 cm-3 cm. As a result, even molds having various thicknesses can be easily clamped by the clamping unit 30a, and can be used for molds that are repeatedly used and have an enlarged edge. .

  FIG. 9 is an explanatory diagram for explaining a use state of the formwork support shown in FIGS. 7 and 8 and corresponds to FIG. 3 described above. In the figure, parts corresponding to those shown in FIG. 3, FIG. 7 and FIG.

  As shown in FIG. 9, upper stack blocks B, B,... Are placed between adjacent lower stack blocks B, B, B, B,. Behind the stacking block B, the formwork support 1a is arranged so that the contact part 41a of the spacer part 40a of the formwork support 1a contacts the back part of the body part BD of the stacking block B. . At this time, the handle portion 20 of the formwork support 1a is oriented in the lateral direction. In addition, the formwork support 1a is arranged in the same manner as the front side behind the second stacking block B in the lateral direction from the stacking block B described above. The leg portions 12a and 12a of the both mold support members 1a and 1a are respectively inserted into the back-filling material provided in the lower stage, whereby both the mold support members 1a and 1a are self-supporting.

  The upper edge part of the formwork W arrange | positioned behind these stacking blocks B, B, B is clamped by the clamping parts 30a and 30a provided in the two formwork support tools 1a and 1a, thereby The mold W is supported in an upright state by both the mold supports 1a and 1a. Then, concrete is placed between the formwork W and the front plate portions BP, BP, BP of the stacking blocks B, B, B to surround the trunk portions BD, BD, BD of the stacking blocks B, B, B. And the backfilled concrete interposed between the back part of the body parts BD, BD and BD and the formwork W.

  By the way, there may be no backfill concrete. In such a case, the formwork support 1a is disposed at an appropriate position between the trunk portions BD, BD of the adjacent stacking blocks B, B and on a line segment connecting the back portions of the adjacent trunk portions BD, BD. . And after pinching the upper edge part of the formwork W arrange | positioned at the back of stacking blocks B, B, B with the holding parts 30a and 30a of the two formwork support tools 1a and 1a arrange | positioned similarly, A cylinder that surrounds the body portions BD, BD, BD of the stack blocks B, B, B by placing concrete between the formwork W and the front plate portions BP, BP, BP of the stack blocks B, B, B Use concrete. At this time, the formwork W is in contact with the back portions of the body portions BD, BD, and BD of the stacking blocks B, B, and B, and therefore no backfill concrete is provided.

  If no backfill concrete is provided, the mold support shown in FIGS. 1 and 2 is not provided with the spacer portion 40, or the mold support shown in FIGS. Even if it is a formwork support which does not provide the spacer part 40a in the tool 1a, it is applicable. In such a formwork support, the main body 10 can be brought into contact with the back part of the body part BD.

  In such a mold support 1a, since the clamping part 30a is formed in a band plate shape as described above, when the edge of the mold W is clamped by the clamping part 30a, the inner surface of the clamping part 30a. Abuts against the edge of the formwork W, and at least the corners of the edge of the formwork W are held in a linear shape, so that the main body 10 is caused by an impact when the formwork support 1a is driven into the backfill material. Occurrence of so-called rolling that rotates around the clamping portion 30a is prevented.

  In the present embodiment, the case where the band plate-shaped sandwiching portion 30a is provided has been described, but the present invention is not limited thereto, and the sandwiching portion 30 shown in FIGS. 1 and 2 is shaped like a prism. You may comprise by the member which made the part which contact | abuts the edge of the formwork W into the plane. Also in this case, like the plate-like member, the edge of the formwork W can be held linearly, and the occurrence of rolling is prevented. However, when it is set as the band-plate-shaped clamping part 30a, a clamping part can be reduced in weight as much as possible.

DESCRIPTION OF SYMBOLS 1 Formwork support 10 Main body 12 Leg part 12a Leg part 20 Handle part 30 Clamping part 30a Clamping part 40 Spacer part 40a Spacer part 41 Contact part 42 Arm part B Stack block C Concrete

Claims (7)

In a formwork support for supporting a formwork interposed between a stacking block stacked in a construction target region and a backfill material filled on the back side of the stacking block,
It comprises a rod-like main body formed on one end side of a leg portion to be inserted into the backfilling material, and a clamping portion that protrudes in the vicinity of the other end of the main body and clamps the formwork. A formwork support tool characterized by that. In a formwork support for supporting a formwork interposed between a stacking block stacked in a construction target region and a backfill material filled on the back side of the stacking block,
A rod-like main body provided with a leg portion to be inserted into the backfill material on one end side thereof, a sandwiching portion projecting near the other end of the main body and sandwiching the mold, and a leg of the main body In the vicinity of the part, the sandwiching part protrudes about 180 ° around the longitudinal axis of the part other than the leg part of the main body, and forms an appropriate gap between the stacking block and the formwork And a spacer portion to be configured,
The spacer portion is disposed at a predetermined distance from the main body and is in contact with the stacking block. The spacer portion extends from the main body and supports the contact portion. And
The mold support according to claim 1, wherein the contact portion is supported by the arm portion from the other end side of the main body.   The formwork support according to claim 2, wherein the arm portion is convex toward the other end side of the main body.   The formwork support according to claim 2 or 3, wherein the rod-shaped contact portion is disposed so that a longitudinal axis thereof is parallel to a longitudinal axis of a portion other than the leg portion of the main body.   The clamping part is extended from the main body so that the edge part of the mold can be clamped between the clamping part and the main body, and the part to be in contact with the edge part of the mold of the clamping part is: The formwork support according to any one of claims 1 to 4, wherein the mold support is tapered so as to be gradually separated from the main body toward the tip of the clamping portion.   The mold support according to claim 5, wherein the clamping part is constituted by a rod-like member or a band plate-like member. 7. The handle according to claim 1, wherein a handle portion is provided in a vicinity of the other end of the main body and projecting at a position different from the spacer portion by about 90 ° around a longitudinal axis of a portion other than the leg portion of the main body. The formwork support described in 1.

Images