US20040089786A1 - Form panel and panel holding member - Google Patents
Form panel and panel holding member Download PDFInfo
- Publication number
- US20040089786A1 US20040089786A1 US10/343,636 US34363603A US2004089786A1 US 20040089786 A1 US20040089786 A1 US 20040089786A1 US 34363603 A US34363603 A US 34363603A US 2004089786 A1 US2004089786 A1 US 2004089786A1
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- United States
- Prior art keywords
- bent
- separator
- panel
- form panel
- recessedly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8647—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties going through the forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/07—Tying means, the tensional elements of which are fastened or tensioned by means of wedge-shaped members
- E04G17/0728—Tying means, the tensional elements of which are fastened or tensioned by means of wedge-shaped members the element consisting of several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2002/867—Corner details
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2002/8688—Scaffoldings or removable supports therefor
Definitions
- This invention relates to a metal form panel used as a sheathing board of a concrete form in civil engineering works, and to a panel holding member for holding the form panel on a basic surface.
- a form panel made of plywood is mainly used as a sheathing board of a concrete form.
- a metal form panel which can be embedded as it is without being disassembled even after a skeleton concrete is cured or hardened has been developed in view of forest protection or because of troublesome of disassembling operation and disposition problem after use.
- This kind of metal form panel is formed by subjecting a thin steel plate to sheet-metal working, and the form panels are formed with ribs in place in a vertical direction for reinforcing the panels.
- the form panels When the form is assembled, the form panels are assembled along a panel holding member disposed on an oversite concrete and then, the ribs of the form panels are connected to each other through a separator so that the form panel can endure a pressure of the concrete which is poured.
- the metal form panel has a constant width (e.g., effective width is 600 mm), and a plurality of form panels are connected to one another to form a sheathing board having a necessary width.
- an end portion having a width narrower than that of the form panel is generated, its size is adjusted using a cut piece of the form panel or another metal panel. At that time, since the panel is cut or a hole for inserting the separator is formed on the ground, there is a problem that the operability is inferior, and precision and strength are deteriorated in some cases.
- the separator is a rod member formed at its opposite ends with male threads.
- opposite male thread portions 31 a of the separator 31 are allowed to project outward from a separator inserting hole 4 formed in a rib portion of the form panel 1 , and metal fittings 32 called as wall spacers are threadedly mounted to the male thread portions 31 a .
- a lateral reinforcing steel pipe 33 is placed on the wall spacer 32 , the fastening metal fitting 34 is fitted to the steel pipe 33 and then, a wedge 35 if inserted into a groove hole 32 a of the wall spacer to fix the steel pipe 33 on an outer surface of the form panel 1 .
- the separator 31 and the wall spacer 32 are formed based on assumption that they are used for a form panel made of plywood. Therefore, when they are used for a metal form panel, it is necessary to use a washer 37 to prevent the separator from rotating together with the wall spacer when the wall spacer or a spacer 36 for adjusting a thickness are threadedly mounted. Since the number of members to be used is large, it takes time to construct the form and it is troublesome to manage the materials.
- a separator which is formed based on the assumption that it is used for a form panel made of plywood is formed with projecting portions 31 b .
- the projecting portions 31 b bite into the form made of plywood to prevent the separator from rotating.
- the separator inserting hole of the conventional metal form panel is formed into a circular shape (see FIG. 15) having a diameter greater than an outer size of the projecting portion 31 b of the separator 31 , or into a square shape (see FIG. 16) whose diagonal line is longer than the outer size of the projecting portion 31 b.
- the separator inserting hole is circular or square in shape like the conventional metal form panel, however, since play between an inner peripheral surface of the separator inserting hole and an outer peripheral surface of the separator is large, the separator 31 is deviated and an inner end surface of the wall spacer 32 adversely comes out from a peripheral portion of the rib portion 2 of the form panel 1 as shown in FIG. 17 in some cases due to impact caused when the concrete is poured or vibration of a vibrator. If such a matter is caused, the fastening metal fitting 34 may be loosened and comes out, the form itself may be deformed or damaged and poured concrete may flow out.
- the panel holding member has a horseshoe-shaped cross section comprising a bottom surface and a pair of rising portions rising upward from opposite ends of the bottom surface. A lower end of the form panel is fitted to and held in the panel holding member.
- the panel holding member is fixed to the oversite concrete by concrete nail.
- the panel holding member has the horseshoe-shaped cross section as described above, it is difficult to strike the concrete nail into the bottom surface thereof, and if a portion which is separate from a body portion having the horseshoe-shaped cross section is provided for striking the concrete nail, there is another problem that the shape becomes complicated, and the structure becomes bulky for transportation and storage.
- This invention has been accomplished in view of the above circumstances, and it is an object of the invention to provide a metal form panel in which concrete form construction work can easily and efficiently be carried out on the ground and which can be assembled strongly, and to provide a panel holding member which is suitably used in combination with the metal form panel.
- the present invention is constructed as follows:
- a first aspect of the present invention provides a form panel includes a plurality of expandable parts, wherein the expandable parts include a plurality of projectedly bent rows bent so as to be protruded toward a concrete depositing surface side and a plurality of recessedly bent rows which are bent so as to be recessed toward the concrete depositing surface, the projectedly bent rows and the recessedly bent rows are in parallel to each other, each of the projectedly bent rows and the recessedly bent rows is provided with a plurality of longitudinal slits at appropriate intervals from one another in a straight line.
- the form panel is previously formed with the plurality of separator inserting holes at predetermined intervals from one another, it is convenient to connect the separator to the form panel.
- the separator inserting hole located at a central portion in a direction intersecting with a direction of the projectedly bent row and recessedly bent row has pointed ends in the direction of the projectedly bent row and recessedly bent row, it becomes easy to bend the form panel along a row of the separator inserting holes.
- the separator inserting hole located at one end in a direction intersecting with a direction of the projectedly bent row and recessedly bent row has a portion of its outer peripheral line projecting toward a center of the hole, the projecting portion is bent in a direction intersecting with a panel surface by a separator in a state in which the separator is inserted, this bent projecting portion is engaged with a shaft of the separator to restrain the separator from rotating around its axis.
- a rib portion which is dented from an outer surface side in a form assembled state is formed with a separator inserting hole, the separator is inserted through the separator inserting hole from its inner surface side to its outer surface side, a wall spacer is mounted to a portion of the separator projecting toward the outer surface side, the form panel is assembled into a state in which the wall spacer abuts against the peripheral portion of the rib portion from the outer surface side, wherein diameters of the separator inserting holes in two directions intersecting with each other have different shapes.
- one of the diameter is larger than an outer size of the projecting portion of the separator, and the other diameter is smaller than the outer size of the projecting portion and larger than a diameter of the separator.
- a panel holding member for holding a form panel on a basic surface of the present invention is characterized in that the panel holding member is long in one direction and has a horseshoe-shaped cross section comprising a bottom surface and a pair of rising portions rising upward from both ends of the bottom surface, at least one of the rising portions is provided with an opening through which a head of a nail striking tool can pass.
- At least one of the rising portions is provided with a holding-height adjusting piece which can be bent inward and which can support a lower end of the form panel from below in its bent state.
- FIG. 1( a ) is a front view and FIG. 1( b ) is a plan view of a form panel 1
- FIG. 2( a ) is a front view
- FIG. 2( b ) is a plan view of a second separator inserting hole
- FIG. 3( a ) is a front view
- FIG. 3( b ) is a plan view of a third separator inserting hole.
- FIGS. 4 ( a ), 4 ( b ) and 4 ( c ) are plan views of a normal state, an extended state and a contracted state of an expandable parts 3 , respectively.
- FIG. 5 is a plan view (part 1 ) of the deformed form panel 1 .
- FIG. 5 is a plan view (part 1 ) of the deformed form panel 1 .
- FIG. 6 is a plan view (part 2 ) of the deformed form panel 1 .
- FIG. 7 is a plan view (part 3 ) of the deformed form panel 1 .
- FIG. 8( a ) is a front view
- FIG. 8( b ) is a plan view
- FIG. 8( b ) is a side view of a panel holding member.
- FIG. 9 is a side view showing a state in which the form panel is held by the panel holding member.
- FIG. 10 is a perspective view of a form.
- FIG. 11 is a sectional view of an essential portion of the form.
- FIG. 12 is a view showing a different shape of the third separator inserting hole.
- FIG. 13 is a view showing another different shape of the third separator inserting hole.
- FIG. 12 is a view showing a different shape of the third separator inserting hole.
- FIG. 14 is a sectional view showing an assembling state of a conventional form panel.
- FIG. 15 is a view (part 1 ) showing a shape of the conventional separator inserting hole.
- FIG. 16 is a view (part 2 ) showing a shape of the conventional separator inserting hole.
- FIG. 17 is a sectional view showing a state in which a separator is inserted through the conventional separator inserting hole.
- FIGS. 1 to 7 show a form panel.
- This form panel 1 is formed by subjecting a thin steel plate (thickness is about 0.35 mm) to sheet-metal working, and the form panel 1 is plated with zinc.
- the form panel 1 is of a rectangular shape having a size of width of 600 mm (effective width) ⁇ length of 1800 mm.
- a necessary number of form panels are connected to one another in a lateral direction to form a sheathing board having a necessary width.
- the form panel 1 comprises rib portions 2 and expandable parts 3 both directing in a vertical direction.
- the rib portions 2 and the expandable parts 3 are alternately arranged in the lateral direction.
- Each the rib portion 2 is formed with separator inserting holes 4 arranged at predetermined intervals from one another in the vertical direction.
- a rib portion 2 A is located at laterally one end, and the rib portion 2 A is formed with circular separator inserting holes (first separator inserting holes) 4 A.
- a rib portion 2 B is located at laterally the other end, and the rib portion 2 B is formed with separator inserting holes (second separator inserting holes) 4 B. As shown in FIG.
- each of the second separator inserting holes 4 B comprises two rhombuses which are vertically arranged such that portions of the rhombuses are overlapped with each other, and vertically central side portions of an outer peripheral line of the second separator inserting hole 4 B project toward a center of the hole. Since a thickness of the steel plate constituting the form panel 1 is thin, if an external force in a direction intersecting a surface of the panel is applied to projecting portions 5 formed on the outer peripheral portion of the second separator inserting hole, the projecting portions 5 are bent relatively easily.
- Rib portions 2 C are formed at laterally central portion of the form panel 1 .
- Each of the rib portions 2 C is formed with separator inserting holes (third separator inserting holes) 4 C.
- the third separator inserting hole 4 C is shaped into a rhombus having a longer vertical diagonal line and a shorter lateral diagonal line.
- This third separator inserting hole 4 C has a structure in which most-portion of its outline is cut, and an inner portion and an outer portion of the outline are connected to each other through a partially remained non-cut portion 6 . In an initial stage, the hole is closed, but if the non-cut portion 6 is cut or bent to remove the inner portion of the outline if necessary, the above-described square hole is formed.
- the third separator inserting hole 4 C has such a size that a vertical size L 1 is larger than an outer size of a projecting portion 31 b of the separator 31 , and a lateral size L 2 is smaller than the outer size of the projecting portion 31 b and larger than a diameter of the separator 31 . If these conditions are satisfied, the third separator inserting hole 4 C may have a shape other than the rhombus.
- the third separator inserting hole 4 C may be of rectangular shape as shown in FIG. 12, of ellipse as shown in FIG. 13, or other shape.
- a portion between the third separator inserting hole 4 C and the third separator inserting hole 4 C is formed with vertical slits 7 . For this reason, also because vertical ends of the third separator inserting hole 4 C are pointed, the rib portion 2 C can easily be bent along a vertical bending line 12 .
- Reference numbers 8 represents screw holes which are formed between the first separator inserting hole 4 A and the first separator inserting hole 4 A with the same pitch as that of the first separator inserting hole 4 A. Lateral outer end lines 9 and 9 are bent inward to ensure the reinforcement and handling safety.
- the expandable parts 3 comprises a projectedly bent row 10 which is bent so as to be protruded toward a concrete depositing surface side, and a pair of recessedly bent rows 11 and 11 which are bent so as to be recessed toward the concrete depositing surface side located on both sides of the projectedly bent row 10 .
- the projectedly bent row 10 and the recessedly bent rows 11 and 11 are in parallel to each other.
- the projectedly bent row 10 and the recessedly bent rows 11 and 11 are provided with a plurality of longitudinal slits 7 in straight lines at appropriate intervals from one another. Therefore, the bending angles of the projectedly bent row 10 and the recessedly bent rows 11 and 11 can relatively easily be changed only manually.
- a normal state of the expandable parts 3 is as shown in FIG.
- FIGS. 8 and 9 show a panel holding member.
- This panel holding member 20 is long in one direction, and has a horseshoe-shaped cross section comprising a bottom surface 21 and a pair of rising portions 22 and 23 rising upward from both ends of the bottom surface and having different lengths.
- a tip end 22 a of the shorter rising portion 22 is bent diagonally outward so that an end of the form panel 1 can smoothly be guided inside of the panel holding member 20 .
- the shorter rising portion 22 is formed with openings 24 at predetermined intervals from one another so that when a concrete nail for fixing the panel holding member on the oversite concrete is struck to the bottom surface, a nail striking device or a hammer can be operated.
- Holding-height adjusting pieces 25 surrounded by horseshoe-shaped lines of cutting plane are provided two each at vertically opposite sides of the opening 24 .
- the holding-height adjusting piece 25 can be bent inward, and in its bent state, the holding-height adjusting piece 25 supports a lower end of the form panel 1 from below.
- a height of each holding-height adjusting piece 25 is different so that the holding-height of the form panel 1 including a case in which no holding-height adjusting pieces 25 are bent can be adjusted in four levels.
- the opening 24 is formed at its opposite sides with screw holes 26 and 26 in the vicinity of the opposite sides.
- the bottom surface 21 of the panel holding member 20 is formed at its one end with a longitudinal incision 27 .
- a terminal portion 27 a of the incision 27 is circular in shape having a diameter larger than a width of the incision 27 so that stress is not concentrated.
- the panel holding member 20 is fixed by a concrete nail on a necessary position on the oversite concrete 30 . If a concrete nail is struck at a position of the bottom plate 21 facing the opening 24 , it is easy to operate the nail striking device or the hammer.
- the form panel 1 is assembled. If an upper surface of the oversite concrete 30 is uneven and the panel holding member 20 is not horizontal, the lower end of the form panel 1 is adjusted by the holding-height adjusting piece 25 such that the lower end is directed horizontally.
- the form panels 1 are arranged in the lateral direction, and laterally outermost rib portions 2 A and 2 B of the adjacent pair of form panels 1 are temporarily connected to each other through a screw. At that time, the rib portion 2 A having the first separator inserting hole is set outer side, and the screw is threadedly engaged using a screw hole 8 .
- opposed form panels 1 and 1 are connected to each other using the separator 31 and the wall spacer 32 .
- the end of the separator passes through the first separator inserting holes 2 A and the second separator inserting holes 2 B of the pair of form panels 1 and 1 from the inner side toward the outer side.
- projecting portions 5 and 5 of the second separator inserting hole 2 B pass through the first separator inserting hole 2 A and bent outward.
- the wall spacer 32 is threadedly engaged with the male thread portion 31 a of the separator 31 , but since the projecting portions 5 and 5 engage with projecting portions 31 b and 31 b formed on a shaft portion of the separator to restrain the separator 31 from rotating, the wall spacer 32 can reliably be threadedly engaged.
- An inner end surface of the wall spacer 32 is received by an outer surface of the rib portion 2 A.
- a form panel 1 having a width narrower than a standard lateral width (e.g., 600 mm) or a form panel 1 having a width wider than the standard lateral width is required, it is possible to satisfy this requirement by expanding or contracting the expandable parts 3 . Further, as shown in FIGS. 5 to 7 , the form panel 1 can be deformed into a desired shape and used at a corner portion of the form. Since the rib portions 2 and the expandable parts 3 are arranged at relatively narrow intervals, a smooth surface closer to a curved surface can be obtained.
- the separator 31 When the separator 31 is inserted through the third separator inserting hole 4 C and the form panels 1 and 1 are connected to each other, the inner side portion of the outline of the third separator inserting hole 4 C is removed to form a predetermined rhombus hole, and the separator 31 is inserted through this hole. As shown in FIG. 3, the separator 31 can be inserted through the third separator inserting hole 4 C coinciding a direction (longitudinal direction) in which the diameter of the third separator inserting hole 4 C is larger and a direction of the projecting portion 31 b of the separator 31 with each other.
- the lateral reinforcing steel pipe 33 is fastened and fixed to the outside of the form panel 1 . Since the form panel 1 is provided with a large number of vertical rib portions 2 and the expandable parts 3 , the form panel 1 has high strength against the bending force in the vertical direction irrespective of the fact that the form panel 1 is formed of super-thin plate. Therefore, it is possible to obtain a form having sufficient strength only by providing the reinforcing steel pipe 33 in the lateral direction.
- the panel holding member 20 is mounted 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 comprising only a body portion having the horseshoe-shaped cross section and the panel holding members 20 can easily be connected to each other in the longitudinal direction utilizing the incision 27 formed on the one end. Therefore, the panel holding member 20 can also be used for the upper end cap.
- the lateral width of the form panel of the present invention can be adjusted, and the form panel can be bent along the vertical bending line. Therefore, it is possible to easily construct a sheathing board having desired size and shape. Since the separator inserting hole is variously worked, it is easy to install the separator, and the number of members required to install the separator can be reduced.
- the form panel of the present invention since diameters of the separator inserting holes intersecting with each other are different, a projecting portion of the separator can be inserted through the separator inserting hole, but there is almost no play between the separator and the inner peripheral surface of the separator inserting hole, and the separator is not deviated in position. Therefore, if the form panel of the present invention is used, it is possible to prevent the form from being deformed and damaged which may be caused due to an impact at the time of striking of the concrete nail or vibration of a vibrator, and it is possible to prevent the concrete from flowing out.
- the panel holding member of the present invention can easily be fixed to the oversite concrete by a concrete nail using a nail striking tool, and the holding-height of the form panel can be adjusted with respect to an uneven surface of the reference surface of the oversite concrete. Further, the panel holding member of the invention can also be used as an upper cap which is put on the upper end of the form panel.
Abstract
It is an object of the present invention to enhance the efficiency of a concrete form construction work.
A form panel 1 to be used includes a plurality of expandable parts 3, wherein the expandable parts 3 include a plurality of projectedly bent rows 10 bent so as to be protruded toward a concrete depositing surface side and a plurality of recessedly bent rows 11 which are bent so as to be recessed toward the concrete depositing surface, the projectedly bent rows 10 and the recessedly bent rows 11 are in parallel to each other, each of the projectedly bent rows 10 and the recessedly bent rows 11 is provided with a plurality of longitudinal slits 7 at appropriate intervals from one another in a straight line.
Description
- This invention relates to a metal form panel used as a sheathing board of a concrete form in civil engineering works, and to a panel holding member for holding the form panel on a basic surface.
- Conventionally, a form panel made of plywood is mainly used as a sheathing board of a concrete form. However, a metal form panel which can be embedded as it is without being disassembled even after a skeleton concrete is cured or hardened has been developed in view of forest protection or because of troublesome of disassembling operation and disposition problem after use. This kind of metal form panel is formed by subjecting a thin steel plate to sheet-metal working, and the form panels are formed with ribs in place in a vertical direction for reinforcing the panels. When the form is assembled, the form panels are assembled along a panel holding member disposed on an oversite concrete and then, the ribs of the form panels are connected to each other through a separator so that the form panel can endure a pressure of the concrete which is poured. The metal form panel has a constant width (e.g., effective width is 600 mm), and a plurality of form panels are connected to one another to form a sheathing board having a necessary width. When an end portion having a width narrower than that of the form panel is generated, its size is adjusted using a cut piece of the form panel or another metal panel. At that time, since the panel is cut or a hole for inserting the separator is formed on the ground, there is a problem that the operability is inferior, and precision and strength are deteriorated in some cases.
- The separator is a rod member formed at its opposite ends with male threads. When the separator is connected to the form panel, as shown in FIG. 14, opposite male thread portions31 a of the
separator 31 are allowed to project outward from aseparator inserting hole 4 formed in a rib portion of theform panel 1, andmetal fittings 32 called as wall spacers are threadedly mounted to the male thread portions 31 a. A lateral reinforcingsteel pipe 33 is placed on thewall spacer 32, the fasteningmetal fitting 34 is fitted to thesteel pipe 33 and then, awedge 35 if inserted into agroove hole 32 a of the wall spacer to fix thesteel pipe 33 on an outer surface of theform panel 1. - The
separator 31 and thewall spacer 32 are formed based on assumption that they are used for a form panel made of plywood. Therefore, when they are used for a metal form panel, it is necessary to use awasher 37 to prevent the separator from rotating together with the wall spacer when the wall spacer or aspacer 36 for adjusting a thickness are threadedly mounted. Since the number of members to be used is large, it takes time to construct the form and it is troublesome to manage the materials. - Separator inserting holes are previously formed in the form panel at predetermined intervals from one another so that it is possible to handle a case in which the form panel is bent at a corner portion of the form and a case in which the form panel is cut into an appropriate width as described above. However, there is a defect that poured concrete leaks from the separator inserting hole.
- Further, a separator which is formed based on the assumption that it is used for a form panel made of plywood is formed with projecting
portions 31 b. The projectingportions 31 b bite into the form made of plywood to prevent the separator from rotating. - Therefore, the separator inserting hole of the conventional metal form panel is formed into a circular shape (see FIG. 15) having a diameter greater than an outer size of the projecting
portion 31 b of theseparator 31, or into a square shape (see FIG. 16) whose diagonal line is longer than the outer size of the projectingportion 31 b. - If the separator inserting hole is circular or square in shape like the conventional metal form panel, however, since play between an inner peripheral surface of the separator inserting hole and an outer peripheral surface of the separator is large, the
separator 31 is deviated and an inner end surface of thewall spacer 32 adversely comes out from a peripheral portion of therib portion 2 of theform panel 1 as shown in FIG. 17 in some cases due to impact caused when the concrete is poured or vibration of a vibrator. If such a matter is caused, the fasteningmetal fitting 34 may be loosened and comes out, the form itself may be deformed or damaged and poured concrete may flow out. - The panel holding member has a horseshoe-shaped cross section comprising a bottom surface and a pair of rising portions rising upward from opposite ends of the bottom surface. A lower end of the form panel is fitted to and held in the panel holding member. The panel holding member is fixed to the oversite concrete by concrete nail. However, since the panel holding member has the horseshoe-shaped cross section as described above, it is difficult to strike the concrete nail into the bottom surface thereof, and if a portion which is separate from a body portion having the horseshoe-shaped cross section is provided for striking the concrete nail, there is another problem that the shape becomes complicated, and the structure becomes bulky for transportation and storage.
- Further, there are problems of handling a case in which a reference surface of the oversite concrete is uneven, and a commonality of upper caps mounted to upper ends of the form panel and the like, which the conventional panel holding member can not overcome.
- This invention has been accomplished in view of the above circumstances, and it is an object of the invention to provide a metal form panel in which concrete form construction work can easily and efficiently be carried out on the ground and which can be assembled strongly, and to provide a panel holding member which is suitably used in combination with the metal form panel.
- To solve the above problems, the present invention is constructed as follows:
- First, a first aspect of the present invention provides a form panel includes a plurality of expandable parts, wherein the expandable parts include a plurality of projectedly bent rows bent so as to be protruded toward a concrete depositing surface side and a plurality of recessedly bent rows which are bent so as to be recessed toward the concrete depositing surface, the projectedly bent rows and the recessedly bent rows are in parallel to each other, each of the projectedly bent rows and the recessedly bent rows is provided with a plurality of longitudinal slits at appropriate intervals from one another in a straight line.
- By changing the bending angles of the projectedly bent row and recessedly bent row, it is possible to expand the expandable parts in a direction intersecting with the longitudinal direction of the projectedly bent row and recessedly bent row. Since the projectedly bent row and the recessedly bent row are formed with the plurality of longitudinal slits at appropriate intervals from one another in the straight line, it is easy to change the bending angles of the projectedly bent row and recessedly bent row. Therefore, it is possible to easily change the effective width of the form panel on the ground, it is unnecessary to cut the form panel or prepare another metal panel for adjusting the size of the form, and the operating efficiency of the form construction is enhanced, and the precision and strength of the form are enhanced. Further, since no discarded material is produced on the ground, post-processing is unnecessary, which improves environmental protection.
- If the form panel is previously formed with the plurality of separator inserting holes at predetermined intervals from one another, it is convenient to connect the separator to the form panel. In this case, if the separator inserting hole located at a central portion in a direction intersecting with a direction of the projectedly bent row and recessedly bent row has pointed ends in the direction of the projectedly bent row and recessedly bent row, it becomes easy to bend the form panel along a row of the separator inserting holes.
- Further, if most of an outline of a separator inserting hole located at a central portion in a direction intersecting with a direction of the projectedly bent row and recessedly bent row is cut, and an inner side portion and an outer side portion of the outline are connected to each other through a non-cut portion of the remaining outline, it is possible to prevent the poured concrete from leaking out in the normal state, and if the non-cut portion is cut or bent if necessary, it is possible to remove the inner side portion of the outline so that the separator can be inserted.
- Further, at least the separator inserting hole located at one end in a direction intersecting with a direction of the projectedly bent row and recessedly bent row has a portion of its outer peripheral line projecting toward a center of the hole, the projecting portion is bent in a direction intersecting with a panel surface by a separator in a state in which the separator is inserted, this bent projecting portion is engaged with a shaft of the separator to restrain the separator from rotating around its axis. With this structure, a detent washer for the separator which is used in a conventional metal form panel is unnecessary.
- According to a second aspect of the invention, a rib portion which is dented from an outer surface side in a form assembled state is formed with a separator inserting hole, the separator is inserted through the separator inserting hole from its inner surface side to its outer surface side, a wall spacer is mounted to a portion of the separator projecting toward the outer surface side, the form panel is assembled into a state in which the wall spacer abuts against the peripheral portion of the rib portion from the outer surface side, wherein diameters of the separator inserting holes in two directions intersecting with each other have different shapes.
- More specifically, it is preferable that among the diameters of the separator inserting holes in two directions intersecting with each other, one of the diameter is larger than an outer size of the projecting portion of the separator, and the other diameter is smaller than the outer size of the projecting portion and larger than a diameter of the separator. With this structure, the projecting portion of the separator can be inserted, but only a small play exists between the inserted separator and the separator inserting hole and thus, it is possible to prevent the separator from being deviated in position when the concrete is poured.
- A panel holding member for holding a form panel on a basic surface of the present invention is characterized in that the panel holding member is long in one direction and has a horseshoe-shaped cross section comprising a bottom surface and a pair of rising portions rising upward from both ends of the bottom surface, at least one of the rising portions is provided with an opening through which a head of a nail striking tool can pass.
- By providing the opening, it is possible to easily strike a concrete nail to the bottom surface of the panel holding member, and it is unnecessary to provide a portion for striking the concrete nail separately from the body portion having the horseshoe-shaped cross section unlike the conventional technique.
- Further, at least one of the rising portions is provided with a holding-height adjusting piece which can be bent inward and which can support a lower end of the form panel from below in its bent state. With this structure, when the reference surface of the oversite concrete is uneven, it is possible to adjust the holding height of the form panel such that the form panel stays horizontally.
- Further, if an end of the bottom surface in a direction intersecting with the cross section is formed with an incision in the direction, since the end of the panel holding member can be bent such that a interval between the pair of rising portions is narrowed, it is possible to fit the ends of the panel holding members to each other and to additionally connect the plurality of panel holding members to each other.
- FIG. 1(a) is a front view and FIG. 1(b) is a plan view of a
form panel 1, FIG. 2(a) is a front view and FIG. 2(b) is a plan view of a second separator inserting hole. FIG. 3(a) is a front view and FIG. 3(b) is a plan view of a third separator inserting hole. FIGS. 4(a), 4(b) and 4(c) are plan views of a normal state, an extended state and a contracted state of anexpandable parts 3, respectively. FIG. 5 is a plan view (part 1) of thedeformed form panel 1. FIG. 6 is a plan view (part 2) of thedeformed form panel 1. FIG. 7 is a plan view (part 3) of thedeformed form panel 1. FIG. 8(a) is a front view, FIG. 8(b) is a plan view and FIG. 8(b) is a side view of a panel holding member. FIG. 9 is a side view showing a state in which the form panel is held by the panel holding member. FIG. 10 is a perspective view of a form. FIG. 11 is a sectional view of an essential portion of the form. FIG. 12 is a view showing a different shape of the third separator inserting hole. FIG. 13 is a view showing another different shape of the third separator inserting hole. FIG. 14 is a sectional view showing an assembling state of a conventional form panel. FIG. 15 is a view (part 1) showing a shape of the conventional separator inserting hole. FIG. 16 is a view (part 2) showing a shape of the conventional separator inserting hole. FIG. 17 is a sectional view showing a state in which a separator is inserted through the conventional separator inserting hole. - A preferred embodiment of the present invention will be explained below based on the drawings.
- FIGS.1 to 7 show a form panel. This
form panel 1 is formed by subjecting a thin steel plate (thickness is about 0.35 mm) to sheet-metal working, and theform panel 1 is plated with zinc. Theform panel 1 is of a rectangular shape having a size of width of 600 mm (effective width)×length of 1800 mm. A necessary number of form panels are connected to one another in a lateral direction to form a sheathing board having a necessary width. - The
form panel 1 comprisesrib portions 2 andexpandable parts 3 both directing in a vertical direction. Therib portions 2 and theexpandable parts 3 are alternately arranged in the lateral direction. Each therib portion 2 is formed withseparator inserting holes 4 arranged at predetermined intervals from one another in the vertical direction. Arib portion 2A is located at laterally one end, and therib portion 2A is formed with circular separator inserting holes (first separator inserting holes) 4A. Arib portion 2B is located at laterally the other end, and therib portion 2B is formed with separator inserting holes (second separator inserting holes) 4B. As shown in FIG. 2, each of the secondseparator inserting holes 4B comprises two rhombuses which are vertically arranged such that portions of the rhombuses are overlapped with each other, and vertically central side portions of an outer peripheral line of the secondseparator inserting hole 4B project toward a center of the hole. Since a thickness of the steel plate constituting theform panel 1 is thin, if an external force in a direction intersecting a surface of the panel is applied to projectingportions 5 formed on the outer peripheral portion of the second separator inserting hole, the projectingportions 5 are bent relatively easily. -
Rib portions 2C are formed at laterally central portion of theform panel 1. Each of therib portions 2C is formed with separator inserting holes (third separator inserting holes) 4C. As shown in FIG. 3, the thirdseparator inserting hole 4C is shaped into a rhombus having a longer vertical diagonal line and a shorter lateral diagonal line. This thirdseparator inserting hole 4C has a structure in which most-portion of its outline is cut, and an inner portion and an outer portion of the outline are connected to each other through a partially remainednon-cut portion 6. In an initial stage, the hole is closed, but if thenon-cut portion 6 is cut or bent to remove the inner portion of the outline if necessary, the above-described square hole is formed. - As shown with chain double-dashed lines in FIG. 3, the third
separator inserting hole 4C has such a size that a vertical size L1 is larger than an outer size of a projectingportion 31 b of theseparator 31, and a lateral size L2 is smaller than the outer size of the projectingportion 31 b and larger than a diameter of theseparator 31. If these conditions are satisfied, the thirdseparator inserting hole 4C may have a shape other than the rhombus. For example, the thirdseparator inserting hole 4C may be of rectangular shape as shown in FIG. 12, of ellipse as shown in FIG. 13, or other shape. - A portion between the third
separator inserting hole 4C and the thirdseparator inserting hole 4C is formed withvertical slits 7. For this reason, also because vertical ends of the thirdseparator inserting hole 4C are pointed, therib portion 2C can easily be bent along avertical bending line 12. -
Reference numbers 8 represents screw holes which are formed between the firstseparator inserting hole 4A and the firstseparator inserting hole 4A with the same pitch as that of the firstseparator inserting hole 4A. Lateralouter end lines - The
expandable parts 3 comprises a projectedlybent row 10 which is bent so as to be protruded toward a concrete depositing surface side, and a pair of recessedlybent rows bent row 10. The projectedlybent row 10 and the recessedlybent rows bent row 10 and the recessedlybent rows longitudinal slits 7 in straight lines at appropriate intervals from one another. Therefore, the bending angles of the projectedlybent row 10 and the recessedlybent rows expandable parts 3 is as shown in FIG. 4(a), and if the bending angles are increased, a lateral width of theexpandable parts 3 is increased as shown in FIG. 4(b), and if the bending angles are reduced, the lateral width is reduced as shown in FIG. 4(c). Therefore, it is possible to easily change the effective width of the form panel on the ground, and it is unnecessary to cut the form panel or prepare another metal panel. Thus, the operability of the form construction is enhanced, and the precision and strength of the form are enhanced. Further, since no discarded material is produced on the ground, post-processing is unnecessary, which improves environmental protection. - If the angles of the projectedly
bent row 10 and the recessedlybent rows expandable parts 3 are adjusted and therib portion 2C is bent along the vertical bending line, it is possible to deform theform panel 1 to a desired shape as shown in FIGS. 5 to 7. - FIGS. 8 and 9 show a panel holding member. This
panel holding member 20 is long in one direction, and has a horseshoe-shaped cross section comprising abottom surface 21 and a pair of risingportions tip end 22 a of the shorter risingportion 22 is bent diagonally outward so that an end of theform panel 1 can smoothly be guided inside of thepanel holding member 20. The shorter risingportion 22 is formed withopenings 24 at predetermined intervals from one another so that when a concrete nail for fixing the panel holding member on the oversite concrete is struck to the bottom surface, a nail striking device or a hammer can be operated. - Holding-
height adjusting pieces 25 surrounded by horseshoe-shaped lines of cutting plane are provided two each at vertically opposite sides of theopening 24. The holding-height adjusting piece 25 can be bent inward, and in its bent state, the holding-height adjusting piece 25 supports a lower end of theform panel 1 from below. A height of each holding-height adjusting piece 25 is different so that the holding-height of theform panel 1 including a case in which no holding-height adjusting pieces 25 are bent can be adjusted in four levels. Further, theopening 24 is formed at its opposite sides with screw holes 26 and 26 in the vicinity of the opposite sides. - The
bottom surface 21 of thepanel holding member 20 is formed at its one end with alongitudinal incision 27. Aterminal portion 27 a of theincision 27 is circular in shape having a diameter larger than a width of theincision 27 so that stress is not concentrated. By providing theincision 27, the end of thepanel holding member 20 can be bent such that a interval between the pair of risingportions panel holding member 20 whose interval between the rising portions is narrowed into an end of anotherpanel holding member 20, and to connect a plurality ofpanel holding members 20 with one another. - Next, a constructing method of the form using the
form panel 1 and thepanel holding member 20 will be explained (see. FIGS. 10 and 11). - First, the
panel holding member 20 is fixed by a concrete nail on a necessary position on theoversite concrete 30. If a concrete nail is struck at a position of thebottom plate 21 facing theopening 24, it is easy to operate the nail striking device or the hammer. - Next, in a state in which a lower end of the
form panel 1 is fitted into thepanel holding member 20, theform panel 1 is assembled. If an upper surface of theoversite concrete 30 is uneven and thepanel holding member 20 is not horizontal, the lower end of theform panel 1 is adjusted by the holding-height adjusting piece 25 such that the lower end is directed horizontally. Theform panels 1 are arranged in the lateral direction, and laterallyoutermost rib portions form panels 1 are temporarily connected to each other through a screw. At that time, therib portion 2A having the first separator inserting hole is set outer side, and the screw is threadedly engaged using ascrew hole 8. - Thereafter, opposed
form panels separator 31 and thewall spacer 32. When theform panels separator inserting holes 2A and the secondseparator inserting holes 2B of the pair ofform panels portions separator inserting hole 2B pass through the firstseparator inserting hole 2A and bent outward. Then, thewall spacer 32 is threadedly engaged with the male thread portion 31 a of theseparator 31, but since the projectingportions portions separator 31 from rotating, thewall spacer 32 can reliably be threadedly engaged. An inner end surface of thewall spacer 32 is received by an outer surface of therib portion 2A. With this structure of the separator connecting portion, a space for adjusting the thickness and a separator-detent washer which are used in a conventional metal form panel are unnecessary. - When a
form panel 1 having a width narrower than a standard lateral width (e.g., 600 mm) or aform panel 1 having a width wider than the standard lateral width is required, it is possible to satisfy this requirement by expanding or contracting theexpandable parts 3. Further, as shown in FIGS. 5 to 7, theform panel 1 can be deformed into a desired shape and used at a corner portion of the form. Since therib portions 2 and theexpandable parts 3 are arranged at relatively narrow intervals, a smooth surface closer to a curved surface can be obtained. - When the
separator 31 is inserted through the thirdseparator inserting hole 4C and theform panels separator inserting hole 4C is removed to form a predetermined rhombus hole, and theseparator 31 is inserted through this hole. As shown in FIG. 3, theseparator 31 can be inserted through the thirdseparator inserting hole 4C coinciding a direction (longitudinal direction) in which the diameter of the thirdseparator inserting hole 4C is larger and a direction of the projectingportion 31 b of theseparator 31 with each other. In a state in which theseparator 31 is inserted through the thirdseparator inserting hole 4C, there is almost no play between the inner peripheral surface of the thirdseparator inserting hole 4C and the outer peripheral surface of theseparator 31. Therefore, even if an impact at the time of striking of the concrete nail or vibration of a vibrator is applied, theseparator 31 is not deviated. - After the
form panel 1 is assembled in this manner, the lateral reinforcingsteel pipe 33 is fastened and fixed to the outside of theform panel 1. Since theform panel 1 is provided with a large number ofvertical rib portions 2 and theexpandable parts 3, theform panel 1 has high strength against the bending force in the vertical direction irrespective of the fact that theform panel 1 is formed of super-thin plate. Therefore, it is possible to obtain a form having sufficient strength only by providing the reinforcingsteel pipe 33 in the lateral direction. - Lastly, the
panel holding member 20 is mounted to the upper end of theform panel 1 as an upper end cap of theform panel 1. Thepanel holding member 20 has a simple structure comprising only a body portion having the horseshoe-shaped cross section and thepanel holding members 20 can easily be connected to each other in the longitudinal direction utilizing theincision 27 formed on the one end. Therefore, thepanel holding member 20 can also be used for the upper end cap. - Then, concrete is provided in the form. Excessive water of the concrete is appropriately discharged out from the
slits 7 formed in therib portions 2 and theexpandable parts 3, and the concrete is cured in an ideal state. Since the thirdseparator inserting hole 4C is closed in the normal state, concrete does not leak from the thirdseparator inserting hole 4C. After the concrete is cured, the reinforcingsteel pipe 33 is disassembled, and thewall spacer 32 is removed from theseparator 31. Theform panel 1 and theseparator 31 are left in their embedded states. - As apparent from the above explanation, the lateral width of the form panel of the present invention can be adjusted, and the form panel can be bent along the vertical bending line. Therefore, it is possible to easily construct a sheathing board having desired size and shape. Since the separator inserting hole is variously worked, it is easy to install the separator, and the number of members required to install the separator can be reduced.
- Further, according to the form panel of the present invention, since diameters of the separator inserting holes intersecting with each other are different, a projecting portion of the separator can be inserted through the separator inserting hole, but there is almost no play between the separator and the inner peripheral surface of the separator inserting hole, and the separator is not deviated in position. Therefore, if the form panel of the present invention is used, it is possible to prevent the form from being deformed and damaged which may be caused due to an impact at the time of striking of the concrete nail or vibration of a vibrator, and it is possible to prevent the concrete from flowing out.
- Furthermore, the panel holding member of the present invention can easily be fixed to the oversite concrete by a concrete nail using a nail striking tool, and the holding-height of the form panel can be adjusted with respect to an uneven surface of the reference surface of the oversite concrete. Further, the panel holding member of the invention can also be used as an upper cap which is put on the upper end of the form panel.
- Therefore, if a concrete form is constructed using the form panels and the panel holding members of the present invention, it is possible to obtain various merits that the operability is enhanced, precision and strength of the constructed concrete form are excellent, the number of attachment members can be reduced and the like.
Claims (8)
1. A form panel comprising an expandable parts, wherein said expandable parts comprises a plurality of projectedly bent rows bent so as to be protruded toward a concrete depositing surface side, and a plurality of recessedly bent rows which are bent so as to be recessed toward the concrete depositing surface side, said projectedly bent rows and said recessedly bent rows are in parallel to each other, each of said projectedly bent rows and said recessedly bent rows is provided with a plurality of longitudinal slits at appropriate intervals from one another in a straight line.
2. A form panel according to claim 1 , further comprising a plurality of separator inserting holes arranged at predetermined intervals from one another, wherein the separator inserting hole located at a central portion in a direction intersecting with a direction of said projectedly bent row and recessedly bent row has pointed ends in the direction of said projectedly bent row and recessedly bent row.
3. A form panel according to claim 2 , wherein most of an outline of a separator inserting hole located at a central portion in a direction intersecting with a direction of said projectedly bent row and recessedly bent row is cut, and an inner side portion and an outer side portion of the outline are connected to each other through a non-cut portion of the remaining outline.
4. A form panel according to any one of claims 1 to 3 , further comprising a plurality of separator inserting holes arranged at predetermined intervals, wherein at least the separator inserting hole located at one end in a direction intersecting with a direction of said projectedly bent row and recessedly bent row has a portion of its outer peripheral line projecting toward a center of the hole, said projecting portion is bent in a direction intersecting with a panel surface by a separator in a state in which the separator is inserted, this bent projecting portion is engaged with a shaft of the separator to restrain the separator from rotating around its axis.
5. A form panel in which a rib portion which is dented from an outer surface side in a form assembled state is formed with a separator inserting hole, the separator is inserted through said separator inserting hole from its inner surface side to its outer surface side, a wall spacer is mounted to a portion of the separator projecting toward the outer surface side, said form panel is assembled into a state in which the wall spacer abuts against the peripheral portion of said rib portion from the outer surface side, wherein diameters of the separator inserting holes in two directions intersecting with each other have different shapes.
6. A panel holding member for holding a form panel on a basic surface, wherein said panel holding member is long in one direction and has a horseshoe-shaped cross section comprising a bottom surface and a pair of rising portions rising upward from both ends of the bottom surface, at least one of the rising portions is provided with an opening through which a head of a nail striking tool can pass.
7. A panel holding member according to claim 6 , wherein at least one of the rising portions is provided with a holding-height adjusting piece which can be bent inward and which can support a lower end of the form panel from below in its bent state.
8. A panel holding member according to claim 6 or 7, wherein an end of the bottom surface in a direction intersecting with said cross section is formed with an incision in said direction.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000237338 | 2000-08-04 | ||
JP2000-237338 | 2000-08-04 | ||
PCT/JP2001/003428 WO2002012647A1 (en) | 2000-08-04 | 2001-04-20 | Form panel and panel holding member |
Publications (1)
Publication Number | Publication Date |
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US20040089786A1 true US20040089786A1 (en) | 2004-05-13 |
Family
ID=18729219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/343,636 Abandoned US20040089786A1 (en) | 2000-08-04 | 2001-04-20 | Form panel and panel holding member |
Country Status (8)
Country | Link |
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US (1) | US20040089786A1 (en) |
EP (1) | EP1308571A4 (en) |
JP (1) | JP3956133B2 (en) |
KR (3) | KR100811381B1 (en) |
CN (1) | CN1204324C (en) |
AU (1) | AU2001248817A1 (en) |
TW (1) | TW503163B (en) |
WO (1) | WO2002012647A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010074550A1 (en) * | 2008-12-23 | 2010-07-01 | Nan San Lee | Assemblage formwork |
US20100275547A1 (en) * | 2006-06-27 | 2010-11-04 | Yoshio Kamata | Fromwork panel |
US20130008125A1 (en) * | 2010-03-19 | 2013-01-10 | Nihon Kankyo Seizou Kabushiki Kaisha | Construction method for new underground structure |
CN109667371A (en) * | 2017-10-13 | 2019-04-23 | Mbestec株式会社 | Improve the non-disengaging pattern tool of shock strength |
US10597881B1 (en) * | 2018-08-02 | 2020-03-24 | Rafael Huguet, Sr. | Wall system |
CN115233680A (en) * | 2022-08-25 | 2022-10-25 | 吴娜娜 | Reinforced template |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002147017A (en) * | 2000-11-13 | 2002-05-22 | Tamura Takayuki | Form panel |
MY134795A (en) * | 2001-11-27 | 2007-12-31 | Bluescope Steel Ltd | Wall panel |
JP3697664B2 (en) * | 2002-03-06 | 2005-09-21 | 和幸 板持 | Formwork panel, accessories to handle this and construction method |
DE20319302U1 (en) * | 2003-12-13 | 2004-02-26 | Vukajlovic, Djordje | Formwork module for the production of concrete-saving walls in particular |
JP4627721B2 (en) * | 2005-12-20 | 2011-02-09 | 日本環境製造株式会社 | Formwork panel and formwork unit |
JP5325588B2 (en) * | 2009-01-23 | 2013-10-23 | 日本環境製造株式会社 | Construction method of concrete structure and formwork panel for concrete structure |
CN106968346A (en) * | 2017-05-08 | 2017-07-21 | 湖南三快而居住宅工业有限公司 | A kind of concrete prefabricated element and its forming method |
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Also Published As
Publication number | Publication date |
---|---|
EP1308571A4 (en) | 2004-05-12 |
CN1204324C (en) | 2005-06-01 |
AU2001248817A1 (en) | 2002-02-18 |
EP1308571A1 (en) | 2003-05-07 |
KR100822129B1 (en) | 2008-04-15 |
WO2002012647A1 (en) | 2002-02-14 |
KR20030040382A (en) | 2003-05-22 |
KR20070067722A (en) | 2007-06-28 |
KR100811381B1 (en) | 2008-03-07 |
JP3956133B2 (en) | 2007-08-08 |
TW503163B (en) | 2002-09-21 |
KR100811382B1 (en) | 2008-03-07 |
CN1444683A (en) | 2003-09-24 |
KR20070058020A (en) | 2007-06-07 |
JPWO2002012647A1 (en) | 2004-04-22 |
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