JP2010156158A - Box drawing form supporting apparatus and method of installing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box drawing form supporting apparatus and a method of installing the box drawing form supporting apparatus provided with hanging metal fittings for supporting box drawing forms adjustably in a horizontal direction (an X-Y direction) and in a height direction (a Z-direction), setting the box drawing forms as designed dimensions beforehand on the ground, and lifting the box drawing forms to fix them to a concrete form in installation positions. <P>SOLUTION: The box drawing form supporting apparatus is constituted to arrange a lower hanging metal fitting with a space below an upper hanging metal fitting supported to concrete forms on both sides, to dispose suspension rods arranged in the embedded positions of anchor bolts, vertically to penetrate the upper hanging metal fitting and lower hanging metal fitting, to support the suspension rods in a vertically adjustable manner at the upper hanging metal fitting, to arrange the box drawing forms downward from the lower face of the lower hanging metal fitting to surround the suspension rods, and to fix the box drawing forms to the suspension rods to hold the box drawing forms into the embedded positions of the anchor bolts. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a box-forming form support device for supporting a box-forming form that is set in advance in order to form a vertical hole in which an anchor bolt is embedded in concrete placing work and a method for installing the same.

Conventionally, piers of highways and the like have been formed of reinforced concrete, and in order to make a vertical hole for standing anchor bolts in advance on the upper surface, a winding pipe called a void or the like made of hard paper Concrete placement is performed after temporarily forming a box-extracting formwork such as a long tube.
In this concrete placement work, in order to form a vertical hole in advance, a void or the like is temporarily set and then the concrete is placed. After the concrete is solidified, the void is removed, and an anchor bolt is set up in the formed vertical hole, and a mortar or Until a void or the like of a series of works of injecting and fixing asphalt or the like is extracted, it is called boxing work, and a temporary void or the like is called a boxing formwork.

This boxing formwork has no proper method and tools as its fixing means, and is currently very difficult. For example, the boxing formwork is welded to the reinforcing bar in the formwork using welding hardware, etc., but the boxing formwork is positioned on the reinforcing bar at the top of the pier, and the boxing formwork is welded to the welding hardware. The work of fixing by welding through the work was very difficult. In addition, there were many problems that welding work could not be performed on rainy days, or that welding sparks scattered on the formwork material and damaged the formwork.
Further, the conventional one has a problem that after placing concrete, a curing period is required, and the box-forming form must be removed and disposed.

Recently, instead of fixing the boxing formwork to the reinforcing bars in the formwork by welding, it was fixed to the concrete formwork by bridging between the upper ends of the concrete formwork on both sides and fixing it by nailing etc. 2 An invention has been proposed in which a mounting base portion is attached to a piece of pier and a box form is fixed between a hook-shaped holding member and a fastening member fixed to the mounting base portion (for example, a patent See Reference 1. Hereinafter, referred to as “Prior Art 1”).
Further, in order to make the boxing formwork reusable, the rod-shaped shaft member, the base attached to the shaft member, and the elasticity wound around the base so as to surround the shaft member. A box punching mold formed from a thin plate having been proposed has been proposed (see, for example, Patent Document 2, hereinafter referred to as “Prior Art 2”).

JP-A-7-247683 JP 2003-129660 A

In the prior art 1, although the welding work is eliminated, the boxing mold is placed in a predetermined horizontal position because it does not have an installation position adjusting function in the horizontal direction (XY direction) of the boxing mold. There was a problem that it could not be set while adjusting. Further, regarding the positioning in the height direction (Z direction), there is also a problem that the operator must hold the boxing formwork by hand and fasten and fix the fastening member at a predetermined height position.
In the prior art 2, although the boxing formwork can be reused, the installation position adjustment of the boxing formwork in the horizontal direction (XY direction) and the height direction (Z direction) is completely considered. Since this is not done, there has been a problem that the boxing form cannot be set at a predetermined position.
On the other hand, the upper surface of a pier such as an expressway is formed horizontally or with an inclination. In any case, the installation surface of the anchor bolt must be formed strictly horizontally. Since a step is formed between the anchor bolt and the installation surface, it is necessary to install a mold for forming the step.

The present invention relates to a horizontal direction (X-Y direction) and a height of a boxing mold in the installation of a boxing mold that is set in advance to form a vertical hole in which an anchor bolt is embedded in concrete placing work. Suspension metal fittings that can be adjusted in the direction (Z direction) are provided, and the boxing formwork is set according to the design dimensions in advance on the ground, and this is lifted with a crane or the like and fixed to the concrete formwork at the installation position. An object of the present invention is to provide a boxing form support apparatus and a method for installing the boxing form which can be installed at a predetermined position only by fine adjustment in the height direction (Z direction) at the installation position. It is said.
Another object of the present invention is to make it easy to install a step form in conjunction with the boxing form.

In order to achieve the above object, according to the first embodiment of the present invention, there is provided a box unloading support device in which a lower hanging bracket is disposed below an upper hanging bracket supported by a concrete mold on both sides, and an anchor bolt is provided. The suspension rod arranged at the buried position is vertically disposed so as to penetrate the upper suspension bracket and the lower suspension bracket, and the suspension rod is supported by the upper suspension bracket so that the suspension rod can be adjusted in the vertical direction. The box-extracting formwork is arranged so as to surround the suspension rod from the lower surface of the frame, and the box-extracting formwork is fixed to the suspension rod to be held at the embedded position of the anchor bolt.
In addition, the boxing form support device of the present invention is, secondly, according to the first feature, the upper suspension metal fittings are composed of a pair of beam-like members arranged in parallel in the X direction at intervals, These beam-shaped members are characterized in that the cross-sectional box-shaped steel bars are arranged in parallel so as to have a gap slightly larger than the diameter of the suspension rod, and are integrally formed.

Further, according to the third feature of the present invention, in the second feature, the pair of Y-directions are located at positions where the suspension rods are arranged perpendicular to the pair of beam members of the upper suspension bracket. Positioning ruler and a pair of X-direction positioning rulers along the pair of beam-like members of the upper hanger. Four points where the Y-direction positioning ruler and the X-direction positioning ruler intersect Among them, one reference point is fixed and the other three points are fixed by bolts and nuts so as to be adjustable.
According to the fourth and third features of the present invention, the Y-direction positioning ruler and the X-direction positioning ruler each have a box-shaped section steel with a hanging rod. A guide member that is arranged in parallel so as to have a gap slightly larger than the diameter and is integrally formed, and is slidable along the gap of the positioning ruler opposite to the Y-direction positioning ruler and the X-direction positioning ruler. It is characterized by providing.

Further, according to the fifth aspect of the present invention, in any one of the features of the first to fourth aspects, the lower hanging bracket includes corner hardwares arranged at four corners so as to form a rectangle, and these metal fittings. It is formed from connecting members that connect corner hardware, and each corner hardware has a cross shape in which cross-section box-shaped steel bars are crossed at right angles, and a suspension rod is passed through the intersection. Are formed so that the position of the corner hardware can be adjusted by fitting the connecting member into the adjacent corner hardware in a nested manner.
Further, according to the sixth aspect of the present invention, in the fifth feature, the step formwork is arranged around the lower suspension bracket at a predetermined interval, and the step formwork is arranged at the lower part. It is characterized by being supported by the corner hardware of the hanging bracket.
Further, according to the sixth aspect of the present invention, in the sixth feature of the present invention, in the sixth feature, the step mold fixing bracket is extended outward from the corner hardware of the lower hanging bracket, and the step mold is provided. It is characterized in that the arrangement of the step molds can be changed by adjusting the support position of the corner fixture of the frame fixing bracket.

Eighthly, according to any one of the first to seventh features, the boxing form support device of the present invention is such that the boxing formwork is formed of a steel pipe having a taper, and is suspended from the upper end of the steel pipe. A fixing plate provided around the hole for inserting the support rod is attached, a bottom plate is provided at the lower end of the steel pipe, and a cap nut to which the lower end of the suspension support rod is screwed is fixed to the center of the upper surface of the bottom plate. It is characterized in that a reinforcing plate is fixed to the lower surface of the plate.
Ninthly, in the eighth feature of the present invention, the length of the steel pipe forming the boxing formwork can be adjusted by stacking the length adjusting steel pipes. It is characterized by doing.

  According to the method for installing the boxing formwork support device of the present invention, the boxing formwork support device according to any one of the first to ninth features is arranged such that the position of the suspension rod in the XY direction is in accordance with the design dimension. Temporarily assembled on the ground while adjusting the upper and lower suspension brackets so that they are positioned, and the temporarily assembled box extraction formwork support device is lifted by the lifting device and attached to the determined position of the concrete formwork, After that, by adjusting the vertical support position of the suspension rod with respect to the upper suspension bracket, the boxing formwork is arranged horizontally and at a predetermined height position via the lower suspension bracket. It is said.

The boxing form support apparatus and the installation method thereof according to the present invention can provide the following excellent effects.
(1) The boxing formwork can be installed without performing welding work, enabling work in rainy weather and preventing damage to the concrete formwork due to generation of welding sparks.
(2) Regardless of the condition of the ground contact surface, the position adjustment of the boxing form in the X, Y, and Z directions can be accurately performed. Further, the box-forming formwork that is installed is firmly fixed without being tilted or moved when the concrete is placed.
(3) The work at the site where the anchor bolt is buried can be simplified, and it can greatly contribute to the safety and efficiency of the work. For this reason, construction time can be shortened.
(4) It is possible to easily install a step mold for forming a step at a position where an anchor bolt is buried.
(5) It is possible to freely adjust the installation positions of the boxing form and the step form corresponding to the anchor bolt burying position. For this reason, the same boxing form support apparatus can be used corresponding to a wide field.
(6) Since the boxing formwork can be reused, the number of required boxing formwork can be reduced, and further, the disposal of waste material after dismantling is eliminated, thereby reducing costs. be able to.

  BEST MODE FOR CARRYING OUT THE INVENTION The best form for carrying out the boxing formwork support apparatus and its installation method of the present invention will be described in detail with reference to the drawings. However, the present invention is not construed as being limited thereto. Various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the invention.

FIG. 1 shows a pier 1 after placing concrete such as a highway, where (a) is a plan view and (b) is a front view.
For convenience of explanation, the arrangement relationship of members will be described below using an XYZ orthogonal coordinate system. As for the planar position relationship, the horizontal direction is the X direction as shown in FIG. The vertical direction is defined as the Y direction.
In the case of this example, four anchor bolts 3 are embedded in the upper surface 2 of the pier 1 in two locations in the X direction. Before the concrete is placed, a concrete formwork is installed along the outer shape of the pier 1, and reinforcing bars are arranged in the vertical, horizontal, and height directions on the inside. A box-extruding formwork is installed to form a vertical hole for anchor bolt embedding.

Incidentally, the upper surface 2 of the pier 1 may be formed to be horizontal or inclined in one direction as shown in FIGS. In any case, as shown in FIG. 2, the anchor bolt 3 is installed with reference to the horizontal plane 4, and therefore the boxing form forming the vertical hole 5 must be installed with reference to the horizontal plane 4. Don't be. For this reason, a horizontal surface 4 is formed on the installation surface of the anchor bolt 3 separately from the upper surface 2 of the pier 1, and a step 6 is formed between the upper surface 2 of the pier 1. There is.
Since the positional relationship of the vertical holes for embedding the anchor bolts 3 is displayed on the concrete form installed along the outer shape of the pier 1, the installation of the box form for forming the vertical hole is a concrete type. This is performed based on this positional relationship displayed in the frame.

3A and 3B show a frame for temporarily assembling the boxing form support device of the present invention on the ground. FIG. 3A is a side view and FIG. 3B is a front view.
The gantry 7 is formed in a rectangular parallelepiped shape. The gantry 7 is a lower horizontal beam 9 connecting two level adjusting jacks 8 arranged at four corners, and the horizontal beam 9 is connected to the horizontal beam 9 so as to connect the respective horizontal beams 9. It is comprised from the vertical beam 10 arrange | positioned orthogonally, the two pillars 11 and 11 erected upward from each horizontal beam 9, and the upper horizontal beam 12 which connects the pillars 11 and 11 in an upper end.
The upper hanging bracket 15 of the boxing form support apparatus to be described later is placed on the upper cross beams 12 and 12, and the box forming form support apparatus is temporarily assembled on the ground.

FIG. 4 is a front view showing a state in which the boxing form support device of the present invention is fixed to the concrete formwork and installed, as seen from the direction of arrows BB in FIG. 5.
FIG. 5 is a plan view showing a state in which the boxing form support device of the present invention is fixed to a concrete formwork and installed. In this example, a description will be given of a device for supporting four box-forming molds so as to embed four anchor bolts as a box-forming mold support device. It goes without saying that the quantity can be set as appropriate.
4 and 5, the concrete molds 14 and 14 on both sides are molds disposed on both sides with a space in the Y direction in FIG. 1 (a).
In this example, the boxing formwork support device is arranged in the Y direction so as to be fixed to the concrete formwork 14 on both sides, and four vertical holes for embedding anchor bolts can be formed simultaneously. In this way, four boxing molds are supported. In this case, as a reference in the height direction, the box cutting form is positioned with reference to the anchor bolt position formed at the lowest position.

  The box-forming form support device has a lower suspension bracket 30 disposed below the upper suspension bracket 15 supported by the concrete molds 14 and 14 on both sides, and is disposed at an anchor bolt burying position in plan view. The suspended support rod 35 is vertically disposed so as to penetrate the upper suspension fitting 15 and the lower suspension fitting 30, and the suspension rod 35 is supported by the upper suspension fitting 15 so as to be adjustable in the vertical direction. The mold frame 50 is disposed so as to surround the suspension rod 35 and downward from the lower surface of the lower hanging bracket 30, and the box-extracting mold frame 50 is fixed by the suspension rod 35 to be held at the anchor bolt embedded position. Yes.

  As shown in FIG. 5, the upper hanging bracket 15 is composed of a pair of beam-like members 16 and 16 arranged in parallel with a gap in the X direction, and each beam-like member 16 is a section steel having a box-shaped section. 17 and 17 are arranged in parallel with a gap δ slightly larger than the diameter of the suspension rod 35 and are integrally formed at both ends by means such as welding. The scale which displays a dimension is attached | subjected to the longitudinal direction of the beam-shaped member 16 surface. Moreover, suspension wire attachment brackets 18 and 18 are provided on the upper surfaces of both sides in the longitudinal direction of the upper suspension bracket 15 and can be lifted and moved by a lifting device such as a crane.

  As shown in FIG. 4, on both sides in the longitudinal direction of the upper hanging bracket 15, fixing brackets for fixing to the concrete molds 14, 14 on both sides, that is, a clamping bracket 19 for clamping the concrete mold 14, a clamping bracket A screw rod 20 which is erected from 19 and is disposed through the upper hanging bracket 15 and nuts 21 and 21 with washers which are screwed into the screw rod 20 from above and below the upper hanging bracket 15 and attached thereto are mounted. . For this reason, the upper suspension fitting 15 is fixed to the concrete formwork 14 so as to be adjustable in the vertical direction.

A pair of X-direction positioning rulers 22, 22 is disposed at a position where the suspension rod 35 is disposed orthogonally to the pair of beam members 16, 16 of the upper suspension bracket 15, and the pair of upper suspension bracket 15 A pair of Y-direction positioning rulers 23, 23 are arranged along the inside of the beam-shaped members 16, 16, and among the four points where the X-direction positioning ruler 22 and the Y-direction positioning ruler 23 intersect, For example, in the reference location 24-1 shown in FIG. 5, the X-direction positioning ruler 22 and the Y-direction positioning ruler 23 are fixed by welding at an angle of 90 °, and the other three locations 24-2 to 24-2. 24-4 is fixed with bolts and nuts 25 in an adjustable manner. In the longitudinal direction of the surfaces of the X-direction positioning ruler 22 and the Y-direction positioning ruler 23, a scale for displaying dimensions is attached, and the anchor bolt embedded position at the reference location 24-1 is fixed to the other three anchors. The bolt burying position can be accurately determined.
In this example, the X-direction positioning ruler 22 is disposed so as to be placed on the upper surfaces of the pair of beam-like members 16, 16 of the upper hanging bracket 15, and the Y-direction positioning ruler 23 is the X-direction positioning ruler 22. It arrange | positions so that the lower surface of may be touched.

Each of the X-direction positioning ruler 22 and the Y-direction positioning ruler 23 has a cross-sectional box-shaped steel 26 arranged in parallel with a gap δ slightly larger than the diameter of the suspension rod 35 and welded at both ends thereof. It is integrally formed by the means.
6 (a) and 6 (b) are a CC arrow view and a DD arrow view of FIG. 5, respectively, and are for positioning relative to the X direction positioning ruler 22 and the Y direction positioning ruler 23, respectively. A guide member 27 slidable along the ruler gap δ is provided so that the relative movement can be performed smoothly. For example, as shown in FIG. 4, a guide member 27 that fits into the gap δ of the X-direction positioning ruler 22 protrudes from the upper surface of the Y-direction positioning ruler 23 at the location 24-2. Further, as shown in FIG. 6B, a guide member 27 that fits into the gap δ of the Y-direction positioning ruler 23 protrudes from the lower surface of the X-direction positioning ruler 22 at the location 24-3. Yes. Further, in the bolt / nut 25, the bolt 25-1 is set so as to protrude from the lower side to the upper side of the Y-direction positioning ruler 23 so as to protrude above the X-direction positioning ruler 22, and through the washer 25-3, the nut 25-2 is fastened and fixed. As shown in FIG. 6, a guide member 27 that fits in the gap δ is also provided protruding from the bolt 25-1.

FIG. 7 is an EE arrow view of FIG.
The lower hanging metal fitting 30 is formed of corner metal parts 31 arranged at four corners so as to form a rectangle and a connecting member 32 for connecting these corner metal parts 31, and each corner metal part 31 is a section steel having a box-shaped section. Are formed by crossing them at right angles, and a through hole 33 for penetrating the suspension rod 35 is formed at the intersection, and the connecting member 32 is nested in the adjacent corner hardware 31,31. By fitting, the position of the corner hardware 31 can be adjusted.
In this example, as shown in FIG. 7, the cross-shaped corner hardware 31 has a long fitting part 31-1 for fitting the connecting member 32 with the through-hole 33 as a base point, and the outer side facing the outer side on the opposite side. The direction part 31-2 is formed short, and the fixing bolt 34 is provided in the fitting part 31-1 into which the connecting member 32 is fitted.

A step mold 36 is arranged around the lower hanging bracket 30 at a predetermined interval, and the step mold 36 is supported by a corner metal 31 of the lower hanging bracket 30.
A mounting bracket 37 is fixed to the inside of the corner portion of the step mold 36 to facilitate the reinforcement of the step mold 36 and the support of the lower hanging bracket 30 by the corner hardware 31.

FIG. 8 is a view taken along the line FF in FIG.
The step mold 36 is fixed by a step mold fixing rod 38 and a step mold auxiliary fixing rod 40 provided so as to extend outward from the corner hardware 31 substantially horizontally. For this reason, the corner metal 31 and the mounting bracket 37 of the step mold 36 are connected at the corner portion at a position toward the intersection of the step mold 36 on the upper surface of the outer portion 31-2 of the corner metal 31, A fixing bracket 39 for fixing the step mold fixing rod 38 that supports the step mold 36 is welded. Further, a pocket 41 for accommodating the step form auxiliary frame fixing fixture 40 is formed on the side surface of the outer portion 31-2 of the corner hardware 31. The pocket 41 is provided with a fixing bolt 42 for fixing the stepped form auxiliary fixing rod 40 at a predetermined position. In addition, the step form auxiliary mold fixing rods 40 are provided at two positions so as to be positioned on both sides of the fixing bracket 39 and to be orthogonal to the mounting bracket 37 of the step mold 36.

As shown in FIG. 8, the mounting bracket 37 of the step mold 36 has a rectangular cross section, and is provided with a screw-fixing wood 43 and a metal cover 44 in order from the step mold 36 side. A pocket 45 is formed. The pocket 45 accommodates a crank-shaped slide fitting 46 that is screwed into one end of the step-form form auxiliary fixing rod 40.
Further, a receiving metal piece 47 that accommodates one end of the step mold fixing rod 38 and is slidably supported is fixed on the upper surface of the mounting bracket 37, and the step mold fixing rod 38 is fixed at a predetermined position. A fixing bolt 48 is provided.
When adjusting the position of the step mold 36, the fixing bolt 42 and the fixing bolt 48 are loosened, and the step mold 36 is set at a predetermined position while the slide fitting 46 is slid in the pocket 45. The fixing bolt 48 may be tightened to fix the step mold fixing rod 38 and the step mold auxiliary fixing rod 40.

   As shown particularly in FIG. 4, the suspension rod 35 is disposed at a position where the anchor bolt is embedded in a plan view, and includes an upper suspension bracket 15, a Y-direction positioning ruler 23, and a lower suspension. The box-extracting formwork 50 that is arranged in the vertical direction so as to penetrate the metal fitting 30 and that is arranged downward from the lower surface of the lower hanging metal fitting 30 is suspended and fixed. The suspension rod 35 is supported by the upper suspension bracket 15 so as to be adjustable in the vertical direction. For this reason, the suspension rod 35 is made of steel and has a circular cross section, and has a male thread cut on the surface thereof, and the upper surface side of the X-direction positioning ruler 22 intersecting the upper suspension bracket 15 and the upper suspension bracket 15. The wing nut 49 with a washer is tightened from the lower surface side of the, and is suspended and supported at a predetermined height position.

The boxing form 50 is formed of a steel pipe having a circular cross section having a taper that decreases in diameter from the upper side to the lower side. A fixing plate 52 provided around a hole 51 for inserting a suspension support rod 35 is attached to the upper end of the boxing mold 50, a bottom plate 53 is provided at the lower end, and suspended from the center of the upper surface of the bottom plate 53. A cap nut 54 to which the lower end of the support rod 35 is screwed is fixed, and a reinforcing plate 55 is fixed to the lower surface of the bottom plate 53. Further, on the lower surfaces of the bottom plate 53 and the reinforcing plate 55, a release plate 56 made of foamed plastic is attached in order to improve the release from the cast concrete.
The box forming mold 50 is configured such that the length adjusting steel pipes 50 'can be stacked so that the length thereof can be adjusted according to the depth of the vertical hole in which the anchor bolt is embedded.

The lower end of the suspension rod 35 is screwed into the cap nut 54 of the box extraction mold 50, and the wing nut 57 screwed to the suspension rod 35 is tightened on the upper surface side of the lower suspension bracket 30 to tighten the box extraction mold. The upper surface of the frame 50 and the lower surface of the lower hanging metal fitting 30 are in close contact with each other, and the box extraction form 50 is held by the suspension rod 35.
Since the boxing mold 50 is held by such a holding mechanism, even when concrete is cast, the boxing mold 50 can be prevented from being tilted, laterally moved, or vertically moved. .

  In order to install the box extraction formwork support device configured as described above, the upper suspension bracket 15 and the lower suspension bracket 30 are mounted so that the position of the suspension rod 35 in the XY direction is positioned as designed. Temporarily assembled on the ground, the temporarily assembled box-extracting formwork support device is lifted by a lifting device and mounted on a predetermined position of the concrete formwork 14. Thereafter, by adjusting the vertical support position of the suspension rod 35 with respect to the upper suspension bracket 15, the boxing mold 50 is disposed horizontally and at a predetermined height position via the lower suspension bracket 30.

FIG. 9 is an explanatory diagram for explaining an operation of extracting the box-extracting formwork 50 from the cast concrete.
First, other members are removed from the boxing form support device, leaving the suspension rod 35 and the boxing formwork 50. Thereafter, a cross beam 59 made of box-shaped section steel having an insertion hole 58 inserted through the suspension rod 35 is inserted into the suspension rod 35, and a wing nut 57 is screwed onto the suspension rod 35 from above the transverse beam 59. The two jacks 60, 60 are disposed between the cast concrete and the cross beam 59. When the horizontal beam 59 is lifted upward by the jack 60, the box-extracting formwork 50 moves upward through the suspension rod 35 and comes out of the cast concrete. At this time, since the boxing mold 50 has a taper and the peeling plate 56 is provided at the bottom of the boxing mold 50, the boxing mold 50 can be easily extracted from the cast concrete. be able to.
Since the box-drawing formwork 50 is not damaged, it can be reused any number of times.

The pier after concrete placement, such as a highway with an anchor bolt embedded, is shown, (a) is a plan view, and (b) is a front view. It is AA sectional drawing of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a gantry for temporarily assembling a boxing form support device of the present invention on the ground, wherein (a) is a side view and (b) is a front view. It is a BB arrow line view of FIG. 5, Comprising: It is a front view which shows the state in which the box form support apparatus for box extraction of this invention was fixed to the concrete formwork. It is a top view which shows the state by which the form support apparatus for box extraction of this invention was fixed to the concrete formwork, and was installed. (A) and (b) are CC arrow views and DD arrow views of FIG. 5, respectively. It is the EE arrow line view of FIG. It is a FF arrow line view of FIG. It is explanatory drawing for demonstrating the operation | work which extracts the formwork for box extraction from placement concrete.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pier 2 Upper surface 3 Anchor bolt 4 Horizontal surface 5 Vertical hole 6 Step 7 Stand 8 Level adjustment jack 9 Lower horizontal beam 10 Vertical beam 11 Column 12 Upper horizontal beam 14 Concrete formwork 15 Upper suspension bracket 16 Beam-like member 16
17 Sectional box-shaped steel 18 Hanging wire mounting bracket 19 Clamping bracket 20 Screw rod 21 Nut with washer 22 X-direction positioning ruler 23 Y-direction positioning ruler 24-1 reference location
25 Bolts and nuts 26 Sectional box shaped steel 27 Guide member 30 Lower hanging bracket 31 Corner hardware 32 Connecting member 33 Through hole 34 Fixing bolt 35 Suspension rod 36 Step mold 37 Fixing bracket 38 Step mold fixing rod 39 Fixing bracket 40 Auxiliary fixing rod for forming step 41 Pocket 42 Fixing bolt 43 Screw fixing wood 44 Cover 45 Pocket 46 Slide fitting 47 Holding metal 48 Fixing bolt 49 Washer wing nut 50 Box removal mold 51 Suspension support rod insertion Hole 52 Fixed plate 53 Bottom plate 54 Cap nut 55 Reinforcement plate 56 Peeling plate 57 Wing nut 58 Insertion hole 59 Cross beam 60 Jack

Claims (10)

  A lower suspension bracket is disposed below the upper suspension bracket supported by the concrete molds on both sides, and the suspension rod disposed at the anchor bolt embedded position passes through the upper suspension bracket and the lower suspension bracket. Arranged vertically, supporting the suspension rod in the upper hanging bracket so that it can be adjusted in the vertical direction, and placing the boxing form frame so as to surround the suspension rod downward from the lower surface of the lower hanging bracket, A box forming form supporting apparatus, wherein the box forming form holding apparatus is held at a position where an anchor bolt is buried by fixing the box forming form to a suspension support rod.   The upper hanging bracket is composed of a pair of beam-like members arranged parallel to each other in the X direction, and each beam-like member has a gap slightly larger than the diameter of the suspension rod. 2. The box-forming form support apparatus according to claim 1, wherein the box-forming form support apparatus is integrally formed so as to be arranged in parallel.   A pair of Y-direction positioning rulers are arranged at positions where the suspension rods are arranged perpendicular to the pair of beam-like members of the upper hanging bracket, and a pair of the pair of beam-like members of the upper hanging bracket is arranged along the pair of beam-like members Place the X-direction positioning ruler, fix one of the four points where the Y-direction positioning ruler intersects the X-direction positioning ruler, and adjust the other three with bolts and nuts. 3. A box-supporting formwork supporting apparatus according to claim 2, which is fixed.   The Y-direction positioning ruler and the X-direction positioning ruler are each formed by integrally forming a box-shaped section steel in parallel with a gap slightly larger than the diameter of the suspension rod. 4. The box-forming form support device according to claim 3, wherein the positioning ruler and the X-direction positioning ruler are provided with a guide member that is slidable along a gap between the opposing positioning rulers.   The lower hanging bracket is formed of corner hardware arranged at four corners so as to form a rectangle and a connecting member for connecting these corner hardware, and each corner hardware intersects a section box-shaped section at a right angle. A cross hole is formed at the intersection, and a through hole for penetrating the suspension rod is formed at the intersection, and the position of the corner hardware is adjusted by fitting the connecting member into the adjacent corner hardware. The form support device for box extraction according to any one of claims 1 to 4, wherein the device is formed so as to be capable of being formed.   6. The method for removing a box according to claim 5, wherein a step mold is disposed around the lower hanging bracket at a predetermined interval, and the step mold is supported by a corner metal fitting of the lower hanging bracket. Formwork support device.   Extending the step mold fixing bracket from the corner bracket of the lower hanging bracket outward, and adjusting the support position of the corner mold fixing bracket for the step bracket makes it possible to change the arrangement of the step mold The form-support apparatus for box extraction according to claim 6.   The box forming form is formed of a steel pipe having a taper, and a fixing plate provided around a hole for inserting a suspension rod is attached to the upper end of the steel pipe, and a bottom plate is provided at the lower end of the steel pipe. The box according to any one of claims 1 to 7, wherein a cap nut to which a lower end of a suspension rod is screwed is fixed to a center portion of an upper surface, and a reinforcing plate is fixed to a lower surface of the bottom plate. Die form support device.   The box forming form support apparatus according to claim 8, wherein the length of the steel pipe forming the box forming form is adjustable by stacking the length adjusting steel pipes. 10. The box-drawing form support apparatus according to claim 1 on the ground while adjusting the upper and lower suspension brackets so that the position of the suspension rod in the XY direction is positioned as designed. Temporarily assembled, and the temporarily assembled box-extracting formwork support device is lifted by the lifting device and attached to the fixed position of the concrete formwork, and then the vertical support position of the suspension rod relative to the upper suspension fitting is adjusted. By doing so, the boxing formwork is arranged horizontally and at a predetermined height position via the lower hanging metal fitting.

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