WO2014205521A1 - Formwork element - Google Patents
Formwork element Download PDFInfo
- Publication number
- WO2014205521A1 WO2014205521A1 PCT/AU2014/050097 AU2014050097W WO2014205521A1 WO 2014205521 A1 WO2014205521 A1 WO 2014205521A1 AU 2014050097 W AU2014050097 W AU 2014050097W WO 2014205521 A1 WO2014205521 A1 WO 2014205521A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slab
- side wall
- concrete
- grip
- lateral flange
- Prior art date
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 97
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
- E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/04—Forming boards or similar elements the form surface being of wood
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
Definitions
- the present invention relates to a formwork element, a composite structure including a concrete slab and the formwork element, and to a construction, assembly with a load transfer member attached to the formwork element.
- Formwork elements are typically used in in- situ, or precast, for casting of concrete- structures, for construction of a building.
- a continuous perimeter is first formed by positioning a plurality of profiled steel sheets positioned in an edge to edge amingeQient as required to form a base, wit a plurality of edge-formwork elements that define the outer edges of the concrete structure.
- wet concrete is poured within the continuous perimeter forming the concrete structure.
- the profiled steel sheets and edge formwork elements may contribute to the mechanica l performance of the concrete structure by acting in composi te action with the concrete structure.
- the profiled steel sheets and edge formwork element do not make a contribution to the mechanical performance but act. as lost formwork only.
- concrete reinforcement members such as steel bars may be positioned within the continuous perimeter prior t pouring of the wet concrete, such that the concrete reinforcement members are cast into the concrete structure during the casting process.
- the concrete reinforcement members may contribute to the mechanical performao.ce of the concrete structure, by acting in composite action with the concrete structure.
- individual and separate channels adapted for fixing of the external systems can be cast into in the concrete structure during the casting process.
- this is routinely done on the top horizontal face of the floor slab, since the individual channels can be easily positioned without any clash with the continuous perimeter.
- fixing is required at the vertical edge of the floor slab, one or more steps of, for example, on-site or off-site manipulation are typically required, such that the individual channels are integrated with the edge- form work element prior to pouring of the wet concrete. This results in a labour intensive construction process, especially since the edge- form work element is often required to be stripped off the floor slab after the casting process, in order for the individual channels to be revealed.
- edge-formwork element with an externally opening channel being prefixed on the edge-formwork element.
- This includes edge-formwork elements in the form or an L-shaped assembly, formed by welding o bolting a plurality of plate to the channel.
- the load capacity of the mechanical or chemical concrete anchors, and the .individual channels are typically limited by the pull-out capacity of the concrete stmcture.
- various limitations such as anchor spacing, edge distance and concrete thickness have to be adhered to, such that the concrete stmcture is adequate in resisting the associated forces. Often, this renders the mechanical or chemical concrete anchors, and the individual channels unsuitable for use near the edges of the concrete structure, or in instances where the concrete structure is not thick enough.
- the mechanical or chemical concrete anchors, and the individual channels may also clash with the profiled steel sheets.
- the present invention seeks to provide a form work element which will overcome or substantially ameliorate at least some of the deficiencie of the prior art:, or to at least provide an alternative. It i to be understood that, if any prior art is referred to herein, such reference doe not constitute an admissio that the informat ion forms part of the common general knowledge in the art, in Australia or any other country.
- the form work element includes a side wall, against which concrete is poured to define a side of the slab, and a lateral flange mat covers a top or bottom peripheral edge of the slab; wherein the lateral flange has a grip that extends into a main body of the slab in a vertical direction, to form a space between the grip and the side wall, which is substantially filled with concrete such that the concrete locks into the space and structurally integrates the element wit the concrete slab; and wherein the lateral flange has a groove formed in an external face of the flange, opposite the slab;, to serve as an anchor site for a load transfe member attached externally of the composite structure by being fitted to the formwork element.
- the grip is formed as an indent projecting inwardly from the associated top or bottom peripheral edge of the slab.
- the groove is formed at a reverse side of the indent.
- the indent includes an angled first section that extends into the body of the slab and a return section that acts as a barrier t restrict concrete being poured over the indent and into the groove,
- the side wall includes an integrated channel, that has is accessible from one side of the side wall, through a reduced dimension entrance defined between opposed shoulders of the channel the channel having an enlarged cavity extending into the main body of the slab on an opposite side of the wall, lengthwise of the formwork element.
- the lateral flange projects from a bottom of the side wall and the grip extends upwardly into the body of the slab.
- the formwork element includes a second lateral flange that projects from a top of the side wall, the second lateral flange having a grip that extends downwardly into the main body of the slab.
- the second lateral flange has a groove formed in an external face of the flange, opposite the slab, to provide a second anchor site for a load transfer member attached externally of the composite structure.
- the formwork element is formed as a single piece, with radiused corners between the side wail, lateral flange and grip, to reduce stress concentration.
- a construction assembly including the composite structure, as described above and. a load transfer member attached to the formwork element.
- the member is an external load transfer member and the assembly further includes a attachment adapted to attach the member to the formwork element by clamping on to the anchor site.
- the groove extends lengthwise of the formwork element to allow adjustment of the lengthwise positioning of the. attachment relative to the formwork element.
- the lateral flange projects from bottom of the side wall and the grip extends upwardly into the body of the slab
- the formwork clement include a second lateral fl ange that projects from a top of the side walk the second lateral flange having a grip that extends downwardly into the main body of the slab to provide a second anchor point, and wherein the attachment is adapted to clamp on to one or both of the first and second anchor sites.
- the side wall includes an integrated channel, that is accessible from one side of the side wall, through a reduced dimension entrance defined between opposed shoulders of the channel, the channel having an enlarged cavity extending into the main body of the slab on an opposite side of the wall, lengthwise of the formwork element, and wherein the member is cantilevered into the cavity.
- assembly further includes an internal load transfer member with an attachment tha connects into the space between the associated grip, side wall and the integrated channel.
- a formwork element for use in the composite structure described above, including a side wall, against which concrete is poured to define a side of a concrete slab, and a lateral flange that cover a to or bottom peripheral edge of the slab: wberein the lateral flange has a grip adapted to extend into a main body of the slab in a vertical direction, to form a space between the grip and the side wall, which is substantially filled with concrete such that the concrete locks into the space in order to structurally integrate the element with the concrete slab; and wherein the- lateral, flange has a groove formed in an external face of the fl ange s to serve as an anchor site for a load transfer member fitted to the formwork element.
- the grip is formed as an indent arranged to project inwardly from the associated top or bottom peripheral edge of the slab.
- the groove is formed at a reverse side of the indent.
- the indent includes an angled first section that arranged to extend into the body of the- slab and a return section that acts as a barrier to restrict concrete being poured over the indent and into the groove, during pouring of the slab.
- the side wall includes an integrated channel , that has is accessible from one side of the side wall, through a reduced dimension entrance defined between opposed shoulders of the channel, the side wall projecting from an opposite side so as to define an enlarged internal cavity, lengthwise of the formwork element.
- the lateral flange projects from a bottom of the side wall and the grip extends upwardly.
- the formwork element includes a second lateral flange that projects from atop of the side wall, the second lateral flange having a downwardly extending grip.
- the second lateral flange has a groove formed in an external face of the flange to provide a second anchor site for the load transfer member.
- the fonflwork element of claim 16 formed as a single piece, with radiused cottiers between the side wail, lateral flange and grip, to reduce stress concentration.
- the form work element is formed by a process of bending a single sheet of material.
- Figure 1 is a partial perspective view of a form work element
- Figure 2 is an enlarged view of in integrated channel of the formwork element
- Figure 3 is a perspective view of (bnnwork)
- Figure 4 is cross-sectional view of a composite structure
- Figure 5 is a partial perspective view of the formwork:
- Figure 6A is a profile of a formwork element;
- Figure 6B is a profile of another formwork element;
- Figure 6C is a profile of yet another formwork element-
- Figure 7 is a partial perspective view of another example of a formwork element;
- Figure 8 is a partial perspective view of the formwork element of Figure 8, with a load transfer member fitted into an integrated channel of the element;
- Figure 9A is a perspective view of another example of a load transfer member;
- Figure 9B is a perspective view of a further example of a load transfer member;
- Figure 9C is a perspective view of another load transfer member;
- Figure 9D is a perspective view of yet another load transfer member;
- Figure 10 is a partial perspective view of an external load transfer member fitted to the forrnwork element
- Figure 11 is a partial perspective view of another formwork element, without an integrated channel
- Figure 12 is a perspective view of formwork. including the element of Figure 1 1;
- Figure 13 is cross- sectional view of a composite structure, incorporating the formwork of Figure 12;
- Figure 14 is a side view of a section of the ibrmwork
- Figure 15 is a partial perspective view of the ibrmwork element with an external load transfer member attached;
- Figure 16 illustrates another example of formwork element
- Figure 17 is a eross-section v iew of an olher example of a formwork element with an external and internal load transfer member attached ;
- Figure 18 A is a perspective view of an example of an external load transfer member;
- Figure 18B is a perspective view showing parts of the load transfer member separated; and Figure 19 is a perspective view of a form work element with internal and external load transfer members.
- a formwork clement 1 has a side wall 2, with a lateral flange 3 projecting from a bottom end 4 of the side wall 2, to form a base 5 of the element 1 , A second flange 6 projects from a top end 7 of the side wall 2.
- the second flange 6 is angled downwardly to form a grip 8.
- the side wall 2 includes an integrated channel 9, shown in more detail in Figure 2.
- the channel 9 has a reduced dimension entrance 10. defined between shoulders 1 1 , on one side 12 of the wall 2.
- the channel 9 is formed by an enlarged ridge portion 1.3 that projects to an opposite side 14 of the wall 2 so a to define an internal cavity 15 that preferably lias a generally dovetail shape.
- the ridge portion 13 and channel 9 extend along the length of the element 1.
- formwork 16 is shown as including a horizontal formwork sheet 17 and the formwork element 1 , which defines peripheral edge 18 of the formwork 16,
- the sheet 17 is positioned on the base 5 of the element I, between the channel 9 and the flange 3.
- a composite structure 20 is shown in Figure 4 as including a concrete slab 21 formed of concrete that has been poured into the formwork 16 and allowed to set, Formwork elements 1 are positioned around all sides 22 of the slab 21 , in order to contain the concrete during the pouring operation.
- the slab 21 has a main body 23 with a top surface 24 and a bottom surface 25.
- the flange 3 covers at least a portion of a bottom peripheral edge 26 of the sl ab 2.1.
- the bottom surface 25 is formed on top of the sheet 17, that in turn rests on the base 5 of each element 1 ,
- the sheet 17 is designed to be left in the composite structure 20.
- the sheet 17 may be replaced by structure such as timber formwork (not shown) that can be stripped out of the composite structure 20 after the concrete has set.
- the enlarged ridge portion 13 serves to structurally integrate the formwork element 1 in the slab 2.1 , while the flange 6 offers similar functionality.
- the gri 8 is east into the slab 21 and projects in a vertically downward direction into the body 23 to form a space 27 between the side wall 2 and the grip 8.
- concrete is initially poured over the sheet 17 and then up against the side wall 2, to form the sides 28 of the slab 21.
- Continued pourin of the concrete up to the top surface 24 causes concrete to fi ll the space 27 and, when set, the concrete forms a mechanical lock with the flange 6 to further integrate the formwork element 1 into the composite structure 20.
- the formwdtk 16 includes a diagonal brace 19 to provide lateral support to the side wall 2 of the element 1, during the pouring operation.
- the brace 1 is attached directly to an upper side of the flange 6 and is secured to the sheet 17 using bolts 38,
- FIG 6A illustrates a channel 9 with a square cross section.
- Figure 6B shows a channel 9 with an extended throat 29, while Figure 6 ' C shows a more rounded channel 9.
- Figure 7 shows another formwork element 1.
- the bottom flange 3 is formed with a grip 30 that extends in a vertical direction, upwardly from the base 8.
- the gri 30 is in the form of an indent 31 and includes an angled first section 32 and a return section 33.
- a groove 34 is formed in an external face 35 of the flange 3, at a reverse side 36 of the indent 3.1...
- the indent 31 and the groove 34 extend lengthwise, of the element 1.
- the flange 3 When incorporated in a composite structure, the flange 3 extends over a bottom peripheral edge of an associated concrete slab (not shown) and the indent 31 project s vertically into the slab.
- the space 27 between the indent 31 and the wall 2 serves as a mechanical lock, when filled with concrete, to further integrate the element 1 in the composite structure.
- the groove 34 also serves as an anchor point for attachment of a load transfer member (such as described with reference to Figure 15, for example).
- the assembly 40 include the formwork element 1 of Figure 7 and an external load transfer member 41 attached to the element 1.
- the element 1 is embedded in a concrete slab (not shown), which ha been omitted for clarity.
- the member 41 is show with an angled attaGhment 42 inserted into the channel 9 so that the member 41 is canti!evered to the element 1.
- the lengthwi e positi nin of the member 41 can be adjusted by simply sliding the member 41 along the elongate channel 9, as required.
- the attachment 42 is tapered wedge 43 with a threaded coupling 44.
- the wedge is designed to be rotated from a sideways insertion orientation to the installed orientation, as shown.
- Figure 9B shows the attachment 42 in the form of two plates 45, with bolt hole couplings 46.
- Figure 9C illustrates the attachment 42 as a single piece wedge-shaped plate 47, with coupling holes 48.
- Figure 9D shows the attachment 42 as a wedge 49.
- anothe construction assembly 40 is illustrated, with a formwork element: similar to the element 1 shown in Figure 8, and like reference numerals are used to denote like parts.
- the difference between the element 1 of Figures 8 and 10 is the top lateral flange 6 in Figure 10 is formed with a differently configured grip 50.
- the flange 6 is designed to extend over a top peripheral edge of a slab (not shown) and the gri 50 includes an indent 51 that projects in a vertically downward, direction.
- the indent includes a downwardly angled section 52 and a return section 53, so as to form a groove 54 in an external face 57 of the flange 6. at a reverse side 58 of the indent 51.
- the space 27 between the indent 51 and the wail 2 serves as mechanical lock, when filled with concrete, to assist in integrating the formworfc element 1 into a composite structure including a concrete slab (not shown) and the element 1.
- the groove 54 provides an anchor site 5 for an external load bearing member 41.
- the member 41 has an attachment 42 formed of two jaws 55, 56.
- the jaw 55 is mounted in the channel 9 and the jaw 56 is clamped over the top of the side wall 2 and into the groove 54.
- FIG. 1 1 where like reference numerals are used to denote like parts, another formwork element 60 is shown.
- the element 60 is similar to that shown in Figure 10, except the integrated channel 9 has been removed and the side wall 2 is- formed as a simple vertical wall.
- the element 60 otherwise has the same features and includes a lower flange 3 with a grip 30 is in the form of an indent 3.1 that includes an angled first section 32 and a return section 33.
- a groove 34 i formed in an external face 35 of the flange 3, at a reverse side 36 of the indent 31.
- the indent 1 and the groove 34 extend lengthwise of the element 1.
- the element 60 also includes a grip 50 in the upper flange 6.
- the gri 5.0 include an indent 51 that projects in a vertically downward direetion.
- the indent 51 has a downwardly angled section 51 and a return section 52, .so as to form a groove 53 in an external face of the flange 6, at a reverse side 57 of the indent 51.
- Figure 12 shows formwork 61 that includes a formwork shee 62 and the formwork element 60 that supports the sheet 62 on the base 5,
- a composite structure 20 that incorporates the formwork elements 60 is shown.
- the flange 6 covers the top peripheral edge of the slab 21 and the top surface 24 of the slab 21. is level with the return section 52 of the indent 51.
- the return section 52 provides a barrier 63 , to restrict concrete from being poured into the groove 53 during formation of the slab 21.
- the lower flange 3 covers a bottom peripheral edge of the slab 21 and forms the base 5 that supports the sheet 62.
- the grip 30 projects upwardly into the s lab 21, to provide a mechanical lock with the concrete in the space betwee the grip 30 and the side wall 2,
- the associated groove 34 also forms an anchor site 65 for attachment of a load transfer member, as described below with reference to Figure 1.5.
- the formwork 61 may includes a diagonal brace 64 between the sheet 62 and the flange 6, to provide structural support to the formwork element 60 as the slab is being poured.
- the brace; 64 is attached to an underside 65 of the flange 6, so as to leave the groove 5 clear of obstruction.
- a construction assembly 70 that includes the formwork element 60 and an external load transfer member 71.
- the member includes an attachment 42, formed of two parts- 63, 4, that clamps onto anchor site 59, 65 provided by the grooves 34, 54.
- the grooves 34, 4 extend lengthwise of the element 60 so that position of the attachment 42 can be adjusted, as required.
- Figure 16 illustrates another version of the assembly 70, where the grooves 34, 54 have a profile tha is more square shaped jaws 66, 67 of the parts 63, 64 of the attachment 42 are modified to suit .
- Figure .17 shows another formwork element 72 of a co struction assembly 73.
- the formwork clement 72 includes an integrated channel 9 cast into a slab 21.
- An external load transfer member 74 is fitted to the element 72 via a head 75 that fits inside the channel 9, through the opening 10 formed in the side 12 of the element 72.
- a lock device 76 with a screw tensioning mechanism 77 allows the member 74 to be secured in place.
- An internal load transfer member 78 is attached to the enlarged ridge portion 13.
- the member 78 is in the. form, of a clamp 7 that is connected to a tensioning rod 80, reinforcing bar, or the like embedded in the slab 21.
- Figure 18A and 18 B show the clamp 79 as being formed in two parts 81 , 82so that each part 81, 82 can be positioned around the ridge portion 13 of Figure 17 and then slid laterally into engagement.
- the construction assembly 40 if Figure 10 is shown a including a further, internal load transfer member 83.
- the member 83 has an attachment 84 that is fitted into the space 27 between the grip 50, the side wall 2 and the ridge portion 13 so as to wedge the attachment 84 in place.
- Th attachment 84 is connected to a reinforcing bar 85 or the like that can be used to either support the element 1 during pouring of the slab and/or t provide for further mechanical integration of the element with the construction assembly 40.
- the formwork element 1 is preferably made from a single piece of sheet material, such as corrosion resistance treated steel .
- the element 1 is formed by a process of bending so that there are no sharp corners and all the joins between, say , the flanges 3, 6, grips 30, 50, channel 9 and wall 2 are radiused, which helps reduce stress concentrations in the element.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480045892.5A CN105637159A (en) | 2013-06-26 | 2014-06-26 | Formwork element |
DE112014003024.4T DE112014003024T5 (en) | 2013-06-26 | 2014-06-26 | An element |
SG11201606343RA SG11201606343RA (en) | 2013-06-26 | 2014-06-26 | Formwork element |
US14/392,257 US20160289982A1 (en) | 2013-06-26 | 2014-06-26 | Formwork element |
GB1600997.9A GB2529995A (en) | 2013-06-26 | 2014-06-26 | Formwork element |
HK16110499.7A HK1222422A1 (en) | 2013-06-26 | 2016-09-02 | Formwork element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013206540 | 2013-06-26 | ||
AU2013206540A AU2013206540B1 (en) | 2013-06-26 | 2013-06-26 | An edge-formwork element with integrated channel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014205521A1 true WO2014205521A1 (en) | 2014-12-31 |
Family
ID=51493190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2014/050097 WO2014205521A1 (en) | 2013-06-26 | 2014-06-26 | Formwork element |
Country Status (8)
Country | Link |
---|---|
US (1) | US20160289982A1 (en) |
CN (1) | CN105637159A (en) |
AU (1) | AU2013206540B1 (en) |
DE (1) | DE112014003024T5 (en) |
GB (1) | GB2529995A (en) |
HK (1) | HK1222422A1 (en) |
SG (1) | SG11201606343RA (en) |
WO (1) | WO2014205521A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT14356U1 (en) * | 2014-07-25 | 2015-09-15 | Innovametall Stahl Und Metallbau Gmbh | Base plate, especially for a balcony |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108501202B (en) * | 2018-04-04 | 2019-03-15 | 鹤岗鹏程科技有限公司 | A kind of prestressed concrete sound barrier manufacture craft |
CN112982959B (en) * | 2021-02-28 | 2022-12-20 | 晟通科技集团有限公司 | Pull tab type formwork system |
CN112922350B (en) * | 2021-03-05 | 2022-05-03 | 重庆第二师范学院 | Secondary structure wall lacing wire structure for building engineering and construction method |
CN113216617B (en) * | 2021-05-21 | 2022-07-12 | 中建八局南方建设有限公司 | Door jamb forming auxiliary device, door jamb structure and construction method of door jamb structure |
CN117927011A (en) * | 2024-03-21 | 2024-04-26 | 太原建工集团有限公司 | Construction process of frame structure under aluminum alloy building template system |
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AU3981068A (en) * | 1969-06-27 | 1971-01-07 | Improvements in and relating to nosings | |
GB2256211A (en) * | 1991-05-25 | 1992-12-02 | George Clark | Permanent shuttering for concrete slab edge. |
WO1994025696A1 (en) * | 1993-05-04 | 1994-11-10 | Helge Schjaerve | Profile for drainage from a balcony |
US6874288B1 (en) * | 2003-02-03 | 2005-04-05 | Crete-Form, Inc | Concrete deck depression form system |
US20110036966A1 (en) * | 2006-06-12 | 2011-02-17 | Bryan Benedict | Stay-in-Place Concrete Footing Forms |
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US1700889A (en) * | 1924-06-06 | 1929-02-05 | John N Heltzel | Collapsible form |
CH646751A5 (en) * | 1980-05-01 | 1984-12-14 | Pawe Ag | USE OF PROFILE ELEMENTS OF STRETCH METAL OR SHEET WITH Roughened SURFACE IN CONCRETE CONSTRUCTION OF A CONSTRUCTION. |
US4443981A (en) * | 1981-09-03 | 1984-04-24 | David Weiss | Concrete form system |
GB9207064D0 (en) * | 1992-03-31 | 1992-05-13 | Halfen Fixing Systems Limited | Pour stop |
JPH1018502A (en) * | 1996-07-05 | 1998-01-20 | Sawata Kenzaishiya:Kk | Ceiling material attaching device |
TW531588B (en) * | 2000-11-08 | 2003-05-11 | Bhp Steel Jla Pty Ltd | Metal decking |
CN1307352C (en) * | 2001-06-12 | 2007-03-28 | 一钢强力有限公司 | A structural formwork member |
SE522507C2 (en) * | 2002-06-07 | 2004-02-10 | Mikael Larsson Med M Bygg Fa | Formwork for casting concrete floor, comprises vertical support part secured via anchor part to support part with vertical section and foot plate |
US20090100776A1 (en) * | 2005-12-12 | 2009-04-23 | Bluescope Steel Limited | Formwork |
US7571576B2 (en) * | 2006-09-18 | 2009-08-11 | Phil S. Payne | Decking system |
CA2694101C (en) * | 2007-06-22 | 2015-03-24 | Diversakore Llc | Framing structure |
US8661755B2 (en) * | 2008-01-24 | 2014-03-04 | Nucor Corporation | Composite wall system |
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-
2013
- 2013-06-26 AU AU2013206540A patent/AU2013206540B1/en not_active Ceased
-
2014
- 2014-06-26 WO PCT/AU2014/050097 patent/WO2014205521A1/en active Application Filing
- 2014-06-26 SG SG11201606343RA patent/SG11201606343RA/en unknown
- 2014-06-26 US US14/392,257 patent/US20160289982A1/en not_active Abandoned
- 2014-06-26 CN CN201480045892.5A patent/CN105637159A/en active Pending
- 2014-06-26 DE DE112014003024.4T patent/DE112014003024T5/en not_active Withdrawn
- 2014-06-26 GB GB1600997.9A patent/GB2529995A/en not_active Withdrawn
-
2016
- 2016-09-02 HK HK16110499.7A patent/HK1222422A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU3981068A (en) * | 1969-06-27 | 1971-01-07 | Improvements in and relating to nosings | |
GB2256211A (en) * | 1991-05-25 | 1992-12-02 | George Clark | Permanent shuttering for concrete slab edge. |
WO1994025696A1 (en) * | 1993-05-04 | 1994-11-10 | Helge Schjaerve | Profile for drainage from a balcony |
US6874288B1 (en) * | 2003-02-03 | 2005-04-05 | Crete-Form, Inc | Concrete deck depression form system |
US20110036966A1 (en) * | 2006-06-12 | 2011-02-17 | Bryan Benedict | Stay-in-Place Concrete Footing Forms |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT14356U1 (en) * | 2014-07-25 | 2015-09-15 | Innovametall Stahl Und Metallbau Gmbh | Base plate, especially for a balcony |
Also Published As
Publication number | Publication date |
---|---|
US20160289982A1 (en) | 2016-10-06 |
CN105637159A (en) | 2016-06-01 |
GB201600997D0 (en) | 2016-03-02 |
GB2529995A (en) | 2016-03-09 |
SG11201606343RA (en) | 2016-09-29 |
DE112014003024T5 (en) | 2016-03-17 |
HK1222422A1 (en) | 2017-06-30 |
AU2013206540B1 (en) | 2014-09-11 |
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