WO2002012647A1

WO2002012647A1 - Form panel and panel holding member

Info

Publication number: WO2002012647A1
Application number: PCT/JP2001/003428
Authority: WO
Inventors: Yuji Tamura
Original assignee: Yanagihara, Minori
Priority date: 2000-08-04
Filing date: 2001-04-20
Publication date: 2002-02-14
Also published as: AU2001248817A1; JP3956133B2; TW503163B; KR20070058020A; KR100811382B1; CN1444683A; KR100811381B1; EP1308571A4; CN1204324C; US20040089786A1; KR100822129B1; KR20070067722A; EP1308571A1; JPWO2002012647A1; KR20030040382A

Abstract

A form panel (1) capable of increasing the efficiency of a concrete form construction work, comprising a plurality of expandable parts (3) having a plurality of projectedly bent rows (10) bent so as to be protruded toward a concrete depositing surface side and recessedly bent rows (11) bent so as to be recessed toward the concrete depositing surface side both provided parallel with each other and having a plurality of longitudinal slits (7) formed, in a straight line, in the projectedly bent rows (10) and recessedly bent rows (11) at proper intervals.

Description

Specification

Formwork panel and panel holding member

Technical field

The present invention relates to a metal formwork panel used for a concrete formwork dam in civil engineering and construction work, and a panel holding member for holding the formwork panel on a foundation surface. Background art

Conventionally, plywood form panels have been mainly used for concrete formwork dams.However, from the viewpoint of forest protection, the complexity of construction demolition work, disposal problems after use, etc. Metal form panels have been developed that can be backfilled without being dismantled after they have been cured. This type of metal formwork panel is formed by forming a thin steel plate by sheet metal working, and has ribs formed in appropriate places in the vertical direction for reinforcement. When assembling the formwork, install the formwork panel along the panel holding member installed on the discarded concrete, and then connect the ribs of the formwork panel with each other to withstand the pressure of the concrete to be poured. Connect at Separation evening. The metal formwork panel is formed to have a fixed width (for example, an effective width of 60 Omm), and a plurality of formwork panels are connected to form a weir plate with a required width. If a fraction of the width of the form panel was narrower than the width of the form panel, the dimensions were adjusted using a cut form panel or another metal panel. At that time, processing such as cutting the panel and drilling holes to pass through the separator was performed on site, resulting in poor work efficiency and problems with accuracy and strength. '

The separator is a bar with male threads cut at both ends, and when connected to the formwork panel, as shown in Fig. 14, both ends of the male thread 31 of the separator 31 are The formwork T JP01 / 03428

A metal fitting 32 called a form tie is screwed onto the separator 1 so as to protrude outward from the separator through hole 4 formed in the rib portion of the panel 1. Then, the reinforcing steel pipe 33 in the horizontal direction is placed on the form tie 32, the fastener 34 is fitted to the steel pipe, and the wedge 35 is inserted into the slot 3 2a of the form tie. Then, the steel pipe 33 is fixed to the outer surface of the formwork panel 1.

By the way, the separator 31 and the foam tie 32 are originally designed for use in plywood formwork panels, so when using them for thin metal formwork panels, adjust the wall thickness. It was necessary to use spacers 36 for the hood and washers 37 to prevent the separation from rotating around with the foam ties when screwing the foam ties. Because of the large number of components used, the construction of the formwork was troublesome and the management of materials was troublesome.

The mold panel is pre-drilled with through holes at predetermined intervals. If the mold panel is used by bending it at a part of the corner of the mold, or if the form panel is Although it is designed to be able to cope with the case of cutting to this width, there was a problem that concrete poured in from this separation hole leaked out.

Also, in the separation tray that is designed to be used for the plywood formwork panel, an overhang portion 31b is formed to cut into the plywood formwork and prevent the separation from turning.

For this reason, the insertion hole of the separation plate of the conventional metal formwork panel has a diameter larger than the outer dimension of the overhang portion 31b of the separation plate 31 (see Fig. 15) or a diagonal line. It was a square (see Fig. 16) longer than the outside dimension of the overhang 31b. However, if the separation hole is circular or square as in the conventional metal form panel described above, there is much play between the inner surface of the separation hole and the outer surface of the separation hole. As a result, the separator 31 shifts as shown in Fig. 17 due to the impact of concrete and the vibration of the vibrator. It may come off from the periphery of the rib 2 of the screw 1. Then, the fasteners 3 4 may be loosened or come off, and the formwork itself may be deformed or damaged, and the poured concrete may flow out.

The panel holding member has a U-shape having a bottom surface portion and a pair of upright portions rising upward from both ends of the bottom surface portion, and the lower end portion of the form panel is fitted inside the panel holding member. It is designed to hold. The panel holding member is fixed to the discard concrete by concrete nails, but it is difficult to hit the concrete nails on the bottom part because it has a U-shaped cross section as described above. Separately, if a site for driving concrete nails is provided, another problem arises that the shape becomes complicated and bulky for transportation and storage.

In addition, there were problems that conventional panel holding members could not overcome, such as handling when the reference surface of the discarded concrete had irregularities and sharing with the upper end cap attached to the upper end of the formwork panel.

The present invention has been made in view of the above circumstances, and a formwork metal formwork panel capable of easily and efficiently constructing a concrete formwork on site and firmly assembling; and It is an object to provide a panel holding member suitable for use in combination. Disclosure of the invention

In order to solve the above problems, the present invention is configured as follows.

First, the formwork panel according to the first invention is composed of a mountain-folded bent strip bent to be convex on the concrete placement face side and a valley-folded bent strip bent to be concave on the concrete placement face side. Plural parallel slits are provided in each of the mountain-folded valleys and the valley-folded bent ridges. By changing the bending angle of the mountain-fold bending line and the valley-fold bending line, the expanding / contracting portion can be expanded / contracted in a direction intersecting the direction of the mountain-fold bending line and the valley-fold bending line. Since a plurality of slits in the ridge direction are formed at appropriate intervals in a straight line on the mountain fold and valley fold, it is easy to change the bending angle of the mountain fold and valley fold. . As a result, the effective width of the formwork panel can be easily changed on site, and it is not necessary to cut the formwork panel or prepare another metal panel to adjust the dimensions of the formwork. Work efficiency, and the accuracy and strength of the formwork can be improved. In addition, since there is no waste material on site, there is no problem with post-treatment, and this will help to preserve the environment.

If a plurality of separation holes are formed at predetermined intervals in the form panel in advance, it is convenient to connect the separation panel to the form panel. The separator through-hole located at the center in the direction intersecting the direction of the fold and bend may have a sharp end in the direction of the mountain fold and the valley fold. Folding the formwork panel along the row of through holes becomes easier. Further, the separation hole passing through the center located in the direction intersecting the direction of the mountain-folded valley and the valley-folded ridge, cuts most of the contour, and passes through the uncut part of the remaining contour. If the inner part of the contour and the outer part of the contour are connected to each other, the leakage of the poured concrete is usually prevented, and the non-cut part is cut or bent as necessary. The inside portion of the contour can be removed to allow the separator to be inserted.

Further, the separator through-hole located at least at one end in the direction intersecting with the direction of the mountain-folded bent strip and the valley-folded bent strip has a shape in which a part of the outer peripheral edge protrudes toward the center of the hole, When the separator is inserted, the projecting portion is bent by the separator in a direction intersecting the panel surface, and the bent projecting portion engages with the shaft of the separator to rotate around the axis of the separator. Is configured to regulate the rotation of If this is the case, the washer that would have been used for conventional metal formwork panels to stop the rotation of the separator would be unnecessary.

Further, in the form panel according to the second invention, a separation hole is formed in the rib portion which is concave when viewed from the outer side in the form assembling state, so that the separation is performed from the inner side to the outer side. A foam tie is attached to a portion of the separator that projects to the outer surface side of the separator so that the foam tie comes into contact with a peripheral portion of the rib portion from the outer surface side. The separator panel is characterized in that the separator holes have different shapes in two directions orthogonal to each other.

In detail, one of the diameters of the separator insertion hole in two directions perpendicular to each other is larger than the outer dimension of the overhang of the separator, the other is smaller than the outer dimension of the overhang, and It is preferable that the shape be larger than the diameter. As a result, the overhanging part of the separation can be passed through, but there is little play between the separated separation and the separation hole. The displacement can be prevented.

Next, the panel holding member according to the present invention has a U-shape that is elongated in one direction and has a cross-sectional shape including a bottom portion and a pair of upright portions rising upward from both ends of the bottom portion. At least one of the upright portions is provided with an opening through which the head of the nailing tool can pass.

By providing the above opening, a concrete nail can be easily hit on the bottom of the panel holding member, and a portion for hitting the concrete nail is provided separately from the main body having a U-shaped cross section as in the related art. No need.

In addition, if at least one of the standing portions is provided with a holding height adjusting piece that can be bent inward and that can support the lower end of the form panel from below in the bent state, irregularities are formed on the reference surface of the discarded concrete. In some cases, formwork panels are horizontal Thus, the holding height of the form panel can be adjusted.

Further, if a notch is formed at the end of the bottom surface in the direction intersecting with the cross section, the end of the panel holding member can be bent so that the interval between the pair of upright portions becomes narrow. A plurality of panel holding members can be added by fitting the ends of the holding members. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a (a) front view and (b) plan view of the formwork panel 1, and FIG. 2 is a (a) front view and (b) plan view of the second separation tray insertion hole. . Fig. 3 is (a) a front view and (b) a plan view of the third separation hole, and Fig. 4 is (a) a normal state, (b) an expanded state, and (C) It is a top view showing the contracted state. 5 is a plan view 1 of the deformed formwork panel 1, FIG. 6 is a plan view 2 of the deformed formwork panel 1, and FIG. 7 is a plan view of the deformed formwork 1. FIG. 3 is a plan view 3 of the panel 1. FIG. 8 is (a) a front view, (b) a plan view, and (c) a side view of the panel holding member. FIG. 9 is a side view showing a state where the form holding panel is held by the panel holding member. FIG. FIG. 10 is a perspective view of a mold, and FIG. 11 is a sectional view of a main part of the mold. Further, FIG. 12 is a diagram showing a different shape of the third separating hole, and FIG. 13 is a diagram showing a further different shape of the third separating hole. FIG. 14 is a cross-sectional view showing an assembled state of a conventional form panel, and FIG. 15 is a first view showing a shape of a conventional separating hole. FIG. 16 is a second view showing the shape of a conventional separator insertion hole, and FIG. 17 is a cross-sectional view showing a state in which the separator is inserted into the conventional separator insertion hole. . BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 to 7 show a formwork panel. The formwork panel 1 is made of a thin steel plate (thickness). 0.35 mm) by sheet metal processing and plated with zinc or the like. The size of the formwork panel 1 is, for example, a rectangle of 600 thighs (effective width) x 180 mm in length. If necessary, a plurality of sheets are connected in the horizontal direction to form a dam with the required width.

The formwork panel 1 has vertically oriented rib portions 2 and expansion / contraction portions 3 alternately arranged in the horizontal direction, and the rib portions 2 are formed with separator through holes 4 at predetermined intervals in the vertical direction. Separate through hole formed in rib 2A located at one end in the lateral direction (referred to as first separator insertion hole) 4A is a circular hole. On the other hand, as shown in FIG. 2, two through holes for separators (referred to as second through hole holes) 4B formed in the rib portion 2B located at the other end in the horizontal direction are provided as shown in FIG. The two diamonds are arranged vertically (vertically) with some overlapping each other, and the upper and lower central parts of the outer peripheral edge project toward the center of the hole. Since the thickness of the steel plate constituting the formwork panel 1 is thin, the protruding portion 5 formed on the outer peripheral portion of the second separation hole is bent relatively easily when an external force in a direction intersecting with the panel surface is applied. .

As shown in FIG. 3, the separation hole 4C formed in the rib portion 2C located at the center in the horizontal direction (the third separation hole) is long as shown in FIG. One diagonal is vertical, and the other diagonal is horizontal. The third separation hole 4C has a structure in which most of the contour is cut, and the inner part of the contour and the outer part of the contour are connected via the remaining uncut portion 6. In the initial state, the hole is closed, but if necessary, the non-cut portion 6 is cut or bent to remove the inner portion of the contour, so that the square hole is formed. As shown by the two-dot chain line in FIG. 3, the size of the third separate through hole 4 C is such that the vertical dimension L 1 is larger than the outer size of the overhang portion 3 1 b of the separator 31. The lateral dimension L2 is smaller than the outer dimension of the overhang portion 31b and larger than the diameter of the separator 31. If the above condition is satisfied, the through hole 4 of the third separator can be formed in a shape other than the rhombus. For example, the shape may be a rectangle as shown in FIG. 12, an ellipse as shown in FIG. 13, or another shape. In the space between the third separator through hole 4C and the third separator through hole 4C, Slit 7 is formed. For this reason, the ribs 2C can be easily bent along the vertical bending lines 12 in combination with the fact that the third separation hole 4C has a sharp vertical end. It has become.

Reference numeral 8 denotes a screw hole, which is drilled at the same pitch as the first separator evening hole in the space between the first separator evening hole 4A and the first separator evening hole 4A. I have. In addition, the lateral outer edges 9, 9 are folded inward to ensure reinforcement and handling safety. The expanding / contracting portion 3 is a mountain-bent bent strip bent to be convex on the concrete casting surface side. 10, and a pair of valley folds 11 and 11 which are bent so as to be concave on the side of the concrete casting surface located on both sides thereof are provided in parallel with each other. Each of the mountain-folded bent strips 10 and the valley-folded bent strips 11 and 11 has a plurality of strip-shaped slits 7 formed at appropriate intervals on a straight line. Therefore, it is possible to relatively easily change the bending angles of the mountain-folded ridge 10 and the valley-folded ridge 11, 11 only by hand. The expansion / contraction section 3 is normally as shown in Fig. 4 (a), but when the angle of each bend is increased, the lateral width is expanded as shown in Fig. 4 (b), and when the angle of each bend is reduced, it becomes the same. The width is reduced as shown in Fig. (C). Therefore, the effective width of the formwork panel can be easily changed on site, and it is not necessary to cut the formwork panel or to make another metal panel easy to adjust the dimensions of the formwork. Work efficiency and formwork accuracy and strength can be improved. In addition, since there is no waste material on site, there is no problem with post-processing, and this also contributes to environmental conservation.

In addition, by adjusting the angles of the mountain-folded bent line 10 and the valley-folded bent line 11 of each of the expansion and contraction portions 3 and by bending the rib portion 2C along the vertical bending line, the fifth As shown in FIG. 7 to FIG. 7, the form panel 1 can be deformed into a desired shape.

8 and 9 show a panel holding member. This panel holding member 20

It is elongated in one direction and has a substantially U-shaped cross section including a bottom portion 21 and a pair of upright portions 2 2, 23 rising from both ends of the bottom portion and having different lengths. . Formwork panel In order to smoothly guide the end of the screw 1 into the inside of the panel holding member 20, the tip 22a of the shorter standing portion 22 is bent obliquely outward. Also, at a predetermined interval, the shorter upright portion 22 has an opening for enabling operation of a nailing machine or a hammer when a concrete nail for discarding the panel holding member and fixing it on concrete is hit on the bottom portion. A part 24 is formed.

Further, on both sides of the opening 24, holding height adjusting pieces 25 are provided, which are surrounded by two U-shaped cutting lines at upper and lower portions. The holding height adjusting piece 25 can be bent inward, and in the bent state, supports the lower end of the form panel 1 from below. The height of each holding height adjustment piece 25 is different, and the holding height of the formwork panel 1 can be adjusted in four stages including the case where none of the holding height adjustment pieces is bent. Further, screw holes 26 and 26 are formed near both sides of the opening 24.

An elongated cut 27 is formed at one end of the bottom surface 21 of the panel holding member 20. The distal end 27a of the cut 27 has a circular shape with a diameter larger than the width of the cut so that stress is not concentrated. By providing the notch 27, the end of the panel holding member 20 can be bent so that the interval between the pair of upright portions 21 and 22 becomes narrower. The plurality of panel holding members 20 can be joined together by fitting the ends of the panel holding members 20 having narrower intervals between the upright portions into the inside.

Next, a method of constructing a mold using the mold panel 1 and the panel holding member 20 will be described (see FIGS. 10 and 11).

First, the panel holding member 20 is fixed to a required position on the discarded concrete 30 with concrete nails. When the concrete nail is hit at the position of the bottom plate 21 facing the opening 24, the operation of the nailing machine and the hammer is easy.

Next, the form panel 1 is built with the lower end fitted inside the panel holding member 20. If the top surface of the discarded concrete 30 has irregularities and the panel holding member 20 is not horizontal, use the holding height adjustment pieces 25 as shown in Fig. 9 to form the panel. Adjust so that the lower end of rule 1 is horizontal. Formwork panels 1 are arranged side by side, and the outermost ribs 2A, 2B in the lateral direction of a pair of adjacent formwork panels 1 are temporarily fixed with screws. At this time, screw the screw using the screw hole 8 with the rib 2A on the side where the first separation hole is located.

After that, formwork panels 1 and 1 facing each other are connected to each other by using separation tray 31 and foam tray 32. When formwork panels 1 are arranged using the full effective width, the ends of the separators are inserted into the first separator 穴 through hole 2A and the second separator 揷 through hole 2B of the pair of formwork panels 1 respectively. Are penetrated from the inside to the outside. Along with this, as shown by a chain line in FIG. 2, the protruding portions 5, 5 of the second separator insertion hole 2B are bent outward through the first separator insertion hole 2A. The form tie 32 is screwed into the male screw 31a of the separator 31. The bent protruding portions 5, 5 are formed on the shaft portion of the separator 3 lb, Since the rotation of the separator 31 is restrained by engaging with 31, the form tie 32 can be securely screwed. The inner end surface of the foam tie 32 is received on the outer surface of the rib portion 2A. The structure of the separator connection section eliminates the need for spacers for adjusting the wall thickness and washers for preventing the separator from rotating, which were used in conventional metal formwork panels.

If a form panel 1 or a form panel 1 that is narrower than the standard width (for example, 600 dragons) is required, this can be dealt with by enlarging or reducing the enlargement / reduction section 3. In addition, as shown in FIGS. 5 to 7, at a part of the corner of the formwork, the formwork panel 1 can be used after being deformed into a desired shape. Since the rib portions 2 and the expansion and contraction portions 3,... Are arranged at relatively small intervals, a smooth surface close to a curved surface can be obtained.

When connecting the formwork panels 1 and 1 by passing the separator 31 through the third separator insertion hole 4C, remove the inner part of the outline of the third separator A diamond-shaped hole, through which the separation 31 passes. As shown in Fig. 3, the diameter of the third separation hole 4C is large (longitudinal) and the separation hole 31

Claims

By matching the direction of the protrusion 31b, the separator 31 can be inserted into the third separator insertion hole 4C. In the state where the separator 31 is inserted through the through hole 4 C of the third separator, since there is almost no play between the inner peripheral surface of the third separator through hole 4 C and the outer peripheral surface of the separator 31, Separation is not displaced even when impacts or pibles are applied during concrete installation. After the form panel 1 is built in this way, the lateral reinforcing steel pipes 33 are fastened and fixed to the outside of the form panel 1 by the method described above. Since the formwork panel 1 is provided with a large number of vertical ribs 2 and expansion / contraction parts 3, it has high strength against vertical bending even though it is formed of an ultra-thin plate. Have. For this reason, a mold having sufficient strength can be obtained only by providing the reinforcing steel pipes 33 in the lateral direction. Finally, a panel holding member 20 is attached to the upper end of the form panel 1 as an upper end cap of the form panel 1. The panel holding member 20 has a simple structure consisting of only a main body portion having a U-shaped cross section, and has a configuration in which a notch 27 formed at one end can be easily added in the longitudinal direction. Therefore, it can be diverted to the upper end cap. Then, concrete is poured into the formwork. Excess water of concrete is appropriately discharged from the slits 7 formed in the rib 2 and the expansion / contraction section 3, and the concrete hardens in an ideal state. Under normal conditions, the third separator through hole 4C is closed, so concrete does not leak from here. When the concrete has hardened, dismantle the reinforcing steel pipe 33 and remove the foam tie 32 from the separator 31. Formwork panel 1 ゃ Separator 3 1 INDUSTRIAL APPLICABILITY As is clear from the above description, the formwork panel according to the present invention can be adjusted in width, and can be bent along a vertical bending line. It is easy to construct a weir board, and it is equipped with a variety of specially designed through holes. The number of required members can be reduced. Further, the formwork panel according to the present invention has a configuration in which the through-holes of the separator can be inserted by forming the separator through-holes in different shapes in two directions orthogonal to each other.遊び There is little play between the inner surface of the through-hole and the structure to keep the separation. Therefore, by using the formwork panel according to the present invention, the deformation and breakage of the formwork caused by the impact at the time of placing the concrete or the vibration of the vibrator can be prevented, and the accident of the poured concrete can be prevented. Can be eliminated. Further, the panel holding member according to the present invention can be easily fixed to concrete discarded with nails using nail nails, and furthermore, the holding height of the formwork panel corresponding to the unevenness of the reference surface of discarded concrete. Can be adjusted. Further, the panel holding member according to the present invention can be used for an upper end cap that covers the upper end of the form panel. Therefore, when a concrete form is constructed using the form panel and the panel holding member according to the present invention, the work efficiency is improved, the accuracy and strength of the constructed concrete form are excellent, and Effects such as reduction of points can be obtained. The scope of the claims

1. A plurality of mountain folds and bent ridges bent to be convex on the concrete casting surface side and a plurality of valley fold bent lines bent to be concave on the concrete casting surface side are provided in parallel with each other; A form panel characterized by having a plurality of expanding / contracting portions in which a plurality of slits in the direction of a stripe are formed at appropriate intervals on a straight line in each of the mountain-folded and valley-folded stripes.

2. A plurality of separator through-holes arranged at a predetermined interval, and a separation insert hole located at a central portion in a direction intersecting the direction of the mountain-folded valley and the valley-folded ridge, wherein the mountain fold-bent is provided. 2. The formwork panel according to claim 1, wherein an end in a direction of the ridge and the valley-bent bend has a pointed shape.

3. Separator through holes located in the center of the direction intersecting the direction of the mountain-folded valleys and valley-folded ridges cut most of the contour, and pass through the uncut part of the remaining contour. 3. The formwork panel according to claim 2, wherein the inner part of the contour and the outer part of the contour are connected.

4. Equipped with a plurality of separation holes arranged at predetermined intervals, at least one separation hole located at one end in a direction intersecting the direction of the bent ridges and valleys. A part of the periphery has a shape protruding toward the center of the hole, and when the separator is inserted, the protruding portion is bent in a direction intersecting the panel surface by the separator, and the protruding portion is bent. The formwork panel according to any one of claims 1 to 3, wherein the mold panel is configured to engage with a shaft portion of the separator to restrict rotation of the separator around the axis. .

5. Separation through holes are formed in the ribs that are concave when viewed from the outer side in the assembled state of the formwork, and the separators pass through the separator from the inner side to the outer side. A form tie which is inserted into the through hole of the radiator, and a foam tie is attached to a portion protruding to the outer surface of the separator, and the foam tie is assembled to a state in which the foam tie comes into contact with a peripheral portion of the rib portion from the outer surface. A formwork panel wherein the separator through-holes have different diameters in two directions orthogonal to each other.

6. A panel holding member for holding a form panel on a base surface, the panel holding member being elongated in one direction and having a bottom surface portion and a pair of upright portions rising upward from both ends of the bottom surface portion. A panel holding member having a U shape, wherein at least one of the upright portions is provided with an opening through which a head of a nail driving tool can pass.

7. At least one of the upright portions is provided with a holding height adjusting piece that can be bent inward and that can support the lower end of the form panel from below in the bent state. 7. The panel holding member according to item 6.

8. The panel holding member according to claim 6, wherein a notch in said direction is formed at an end of said bottom surface in a direction intersecting said cross section.