EP4022151A1 - Améliorations apportées à un coffrage de colonne - Google Patents

Améliorations apportées à un coffrage de colonne

Info

Publication number
EP4022151A1
EP4022151A1 EP20856369.2A EP20856369A EP4022151A1 EP 4022151 A1 EP4022151 A1 EP 4022151A1 EP 20856369 A EP20856369 A EP 20856369A EP 4022151 A1 EP4022151 A1 EP 4022151A1
Authority
EP
European Patent Office
Prior art keywords
shell
shell portion
lost
spacer element
column
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.)
Pending
Application number
EP20856369.2A
Other languages
German (de)
English (en)
Other versions
EP4022151A4 (fr
Inventor
Wasyl Rosati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Form 700 Pty Ltd
Original Assignee
Form 700 Pty Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2019903147A external-priority patent/AU2019903147A0/en
Application filed by Form 700 Pty Ltd filed Critical Form 700 Pty Ltd
Publication of EP4022151A1 publication Critical patent/EP4022151A1/fr
Publication of EP4022151A4 publication Critical patent/EP4022151A4/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

Definitions

  • the present disclosure relates to formwork.
  • the present disclosure relates to lost column formwork.
  • Structural concrete columns are formed by pouring the concrete into shape providing formwork arranged around structural steel reinforcement framework so that the concrete sets around the reinforcement framework.
  • Lost formwork is formwork which remains in situ alter pouring, becoming part of the completed structure. Use of lost formwork permits preassembly of the formwork offsite, reducing delays associated with the set-up, removal and cleaning of conventional reusable formwork.
  • Lost column formwork comprises a shell into which the structural steel reinforcement framework is positioned and the concrete is poured, and which will remain a part of the completed column.
  • Fire resistance is a critically important part of structural design of structures.
  • Standards for structural fire design of concrete structures typically require specified minimum dimensions of a cross- sectional area for the structure, and specified minimal distances of reinforcement bar from the surface of the concrete member, the latter being commonly referred to as ’axis distance’.
  • a significant issue with lost column formwork relates to preventing bulging or ballooning of a shell of the formwork resulting from hydrostatic pressure once this is filled with concrete.
  • a further issue is ensuring that the ‘axis distance’ of the reinforcement bar from the surface of the column is properly established during manufacture, and that this axis distance will be maintained when transporting the formwork to the building site, and finally once this formwork is filled with concrete. Where bulging occurs, this axis distance will be greater than required, but insufficient in other (higher) regions on the column. As a result, such a column would not meet the necessary standards.
  • Yet a further issue is that the long and slender geometry of columns creates difficulties with internal assembly of the lost column formwork, particularly in the central region of the formwork, as this cannot be accessed from the ends thereof.
  • a lost column formwork assembly comprising: a. a first shell portion and a second shell portion, each shell portion comprises an elongate body comprising a pair of lengthwise extending edges, and an inner side and an outer side, wherein at least a first shell portion comprises a generally u-shaped cross-section, and the shell portions are adapted to cooperatively form a column shell by being joined along their lengthwise extending edges; b. each shell portion further comprising at least one spacer element depending from an inner side of each shell portion and projecting inwardly; c.
  • the lost fonnwork assembly further comprising: e. at least one brace element of sufficient length to bridge opposing inner sides of the two shell portions; and f. a column reinforcement framework; and g. wherein the two shell portions are joined along their lengthwise extending edges to form a column shell, with the column reinforcement framework extending lengthwise through the shell and separated from the shell by the spacing elements, and with the or each bracing element extending through the reinforcement framework and between opposing inner sides of the two shell portions, and secured at opposing ends thereof with respect to the inner sides of the two shell portions.
  • each shell portion comprises an elongate body comprising a generally u-shaped cross-section shape comprising a pair of lengthwise extending edges, and an inner side and an outer side, and adapted to cooperatively form a column shell by being joined along their lengthwise extending edges.
  • the second shell portion is substantially flat.
  • the lost column formwork assembly further comprises a plurality of the brace elements arranged in parallel, extending transversely across the shell and spaced apart lengthwise therealong.
  • a method for assembling a lost column formwork assembly comprising: a. a first shell portion and a second shell portion, each shell portion comprises an elongate body comprising a pair of lengthwise extending edges, and an inner side and an outer side, wherein at least a first shell portion comprises a generally u-shaped cross-section, and the shell portions are adapted to cooperatively form a column shell by being joined along their lengthwise extending edges; b. each shell portion further comprising at least one spacer element depending from an inner side of each shell portion and projecting inwardly; c. where the or each spacer element for the second shell portion is separate to this prior to assembly; d.
  • the lost formwork assembly further comprising: f. at least one brace element of sufficient length to bridge opposing inner sides of the two shell portions; and g. a column reinforcement framework; and h. the method of assembly comprising the steps of: i.
  • At least the second shell portion comprises a line of the through apertures spaced apart there along, via which the or each spacer element for this portion can be secured thereto.
  • At least the second shell portion comprises at least a pair of parallel lines of the through apertures spaced apart there along, via which a pair of parallel spacer elements for this portion can be secured thereto.
  • the first shell portion comprises at least one line of the through apertures spaced apart there along, via which the or each spacer element for this portion can be secured thereto.
  • a lost column fonnwork shell portion comprising an elongate body comprising a generally u-shaped cross-section shape comprising a pair of lengthwise extending edges, an inner side and an outer side, at least one spacer element depending from the inner side of the shell portion and projecting inwardly.
  • the cross-section shape of the lost column formwork shell portion comprises three straight sides, a first side, and then a pair of parallel sides extending from the first side.
  • At least one spacer element depends from each of the three sides of the lost column formwork shell portion.
  • two shell portions cooperatively form a rectilinear cross-sectional shape.
  • each spacer element comprises a generally u-shaped cross-sectional shape.
  • each spacer element is arranged with an opening to its u-shape directed inwardly.
  • each spacer comprises a length of parallel flange channel (PFC).
  • each spacer element is elongate and extends along the column formwork shell portion.
  • the spacer might comprise a pair of plates standing upright on a lengthwise extending edge thereof, and arranged in parallel to each other.
  • the method for assembling the lost column formwork assembly comprises the further steps of locating each end of each bracing element in the opening of one of the spacer elements, and securing each end to its respective spacer element, and thus with respect to the respective shell portion in turn.
  • the cross-section shape of the lost column formwork shell portion comprises a semi-circle.
  • two shell portions cooperatively form a circular cross-sectional shape.
  • the cross-section shape comprises half of a polygon shape.
  • This polygon shape might comprise any one of a triangle, a pentagon, a hexagon, a heptagon, an octagon and so on.
  • a lost colmnn formwork shell assembly comprising: a first shell portion and a second shell portion, each shell portion comprising an elongate body comprising a pair of lengthwise extending edges, and an inner side and an outer side, wherein at least a first shell portion comprises a generally u-shaped cross-section, and the shell portions are adapted to cooperatively form a column shell by being joined along their lengthwise extending edges; each shell portion further comprising at least one spacer element depending from an imier side of each shell portion and projecting inwardly; and wherein at least the second shell portion comprises at least one aperture extending therethrough between the inner side and the outer side thereof, via which the spacer element for this portion can be secured thereto.
  • Figure 1 is a perspective view of a first shell portion for a lost column formwork assembly according to a first embodiment
  • Figure 2 is a perspective view of a second shell portion for use with the first shell portion of Figure 1;
  • Figure 3 is a perspective view of a spacer element for use with the first shell portion of Figure 1 and the second shell portion of Figure 2;
  • Figure 4 is a perspective view of the lost column formwork assembly according to the first embodiment, comprising the elements illustrated in Figures 1 through 3, but minus a column reinforcement framework, which is omitted to permit visibility of other elements;
  • Figure 5 is an end view of the lost column formwork assembly according to the first embodiment
  • Figure 6 is a perspective view of a first shell portion for a lost column formwork assembly according to a second embodiment
  • Figure 7 is a perspective view of a second shell portion for use with the first shell portion of Figure 5;
  • Figures 8 and 10 are perspective views of the lost column formwork assembly according to the second embodiment, minus the second shell portion of Figure 6 and a column reinforcement framework, which are omitted to permit visibility of other elements;
  • Figures 9 and 11 are perspective views of the lost column formwork assembly according to the second embodiment, minus the column reinforcement framework, which is omitted to permit visibility of other elements;
  • Figure 12 is a detail view of an end of the first shell portion according to the second embodiment
  • Figure 13 is an end view of a lost column formwork assembly according to a third embodiment
  • Figure 14 is an end view of a lost column formwork assembly according to a fourth embodiment
  • Figure 15 is an end view of a lost column formwork assembly according to a fifth embodiment.
  • FIG. 1 where there is illustrated a first shell portion 10 of a lost column formwork assembly 100 according to a first embodiment.
  • Figure 2 illustrates a second shell portion 20 for use with the first shell portion 10.
  • the first shell portion 10 comprises an elongate body comprising a pair of lengthwise extending edges E, a generally u-shaped cross-section, and an inner side (within the u-shape) and an outer side.
  • the u-shape cross-section shape of the first shell portion 10 comprises three straight sides, a first side 12, and then a pair of parallel sides 14 extending from the first side 12.
  • each of these sides 12 and 14 is comprised of a mild steel plate, and these plates are welded together along their common edges.
  • At least one spacer element 30 depends from (in this case they are welded to) each of the three sides 12 and 14 of the first shell portion 10.
  • Each of these spacers 30 comprises a length of mild steel parallel flange channel (PFC) comprising a generally u-shaped cross-sectional shape and oriented with an opening to this u-shape directed inwardly.
  • PFC parallel flange channel
  • Each spacer element 30 is elongate and extends along the column fonnwork shell portion 10.
  • the second shell portion 20 comprises an elongate body comprising a pair of lengthwise extending edges E, a generally u-shaped cross-section, and an inner side (within the u-shape) and an outer side.
  • the u-shape cross-section shape of the second shell portion 20 also comprises three straight sides, a first side 22, and then a pair of parallel sides 24 extending from the first side 22. Again, in this embodiment, each of these sides 22 and 24 is comprised of a mild steel plate, and these plates are welded together along their common edges.
  • the parallel sides 14 of the first shell portion 10 are approximately the same length as the parallel sides 24 of the second shell portion 20.
  • the first side 22 of the second shell portion 20 comprises a line of through apertures 26 spaced apart there along.
  • the purpose of these apertures 26 relates to the separate spacer element 30 illustrated in Figure 3, which will be explained further below.
  • Spacer element 30 of Figure 3 is identical to those depending from the first shell portion 10, but is initially separate from the first shell portion 10, and assembled with this as assembly of the lost column formwork assembly 100 progresses.
  • Assembly of lost column formwork assembly 100 commences by laying the first shell portion 10 down with its opening directed upwards. Laying this shell portion 10 down is not essential, but makes the process easier.
  • the structural reinforcement framework 50 is laid in the first shell portion 10 so that this is separated from the shell by the spacing elements 30.
  • the reinforcement framework 50 is comprised of a plurality of hoops or rings 52 of thick steel bar joined in a spaced apart fashion by a plurality of long lengths 54 of thick steel bar extending in the direction of elongation of the column.
  • the long bars 54 intersect the hoops 52 at positions spaced apart around these, and these are welded to each other at these points of intersection.
  • the long bars 52 may extend beyond the ends of the shell portions 10 and 20 depending on the requirements for securing these to floors above and below the column to be formed.
  • the reinforcement framework 50 further comprises a plurality of cross-ties 56, each extending from one side of the framework 50 to the other, and looping around the rods 54 at its ends to tie the sides of the hoop 52 together and prevent unwanted spreading thereof.
  • the spacing elements 30 are selected to ensure that the required ‘axis distance’ is maintained between the shell portions 10 and 20 and the reinforcement framework 50 in the completed lost column formwork assembly 100, and ultimately the completed column of which this lost column formwork assembly 100 will form apart. By providing a pair of flanges as opposed to single point of contact, the spacing elements 30 ensure that the axis distance is maintained.
  • the spacing elements 30 also improve the strength and rigidity of the shell portions 10 and 20.
  • bracing elements 40A in the form of thick steel bars, are inserted through gaps in the reinforcement framework 50 (not illustrated in Figure 4) and laid in a spaced apart fashion extending between the spacer elements 30 at either side of the opening to the first shell portion 10, with the ends of the bracing elements 40A nested in the opening between the flanges of the spacing elements 30, and secured by welding at the opposing ends thereof to the spacer elements 30.
  • This process is performed one bracing element 40A at a time, starting at one end of the assembly 100 and progressing there along.
  • a plurality of further bracing elements 40B are inserted through gaps in the reinforcement framework 50 and stood upright in a spaced apart fashion, with a lower end positioned in the opening between the flanges of the spacing elements 30, and secured by welding them at this bottom end to the spacer element 30. This process is performed one bracing element 40B at a time, starting at one end of the assembly 100 and progressing there along.
  • the loose spacer element 30 illustrated in Figure 3 is then positioned over the upper ends of the upright bracing elements 40B with its opening directed inwardly (downwards in this case) and its flanges either side of the upper ends of the upright bracing elements 40B.
  • the upper ends of the upright bracing elements 40B are then secured by welding to the spacer element 30.
  • the second shell portion 20 is then positioned against the first shell portion 10 so that respective edges E of the shell portions 10 and 20 meet.
  • the two shell portions 10 and 20 are then joined along these edges E so that they cooperatively form a shell of rectilinear (square in this case) cross-sectional shape.
  • the upper spacer element 30 is then secured by welding to the upper shell portion 20 by welds applied at each of the apertures 26 to the back of the upper spacer element 30.
  • bracing elements 40A and 40B can then be made between bracing elements 40A and 40B and the reinforcement framework 50, to ensure that there is no movement of reinforcement framework 50 relative to the remainder of the assembly 100.
  • Thi s assembly process can be performed with the aid of a specially made jig, to ensure accuracy in the completed assembly 100.
  • the bracing elements 40A and 40B improve the strength and rigidity of the lost column formwork assembly 100. Usefully, they will reinforce the assembly 100 against bulging when the assembly 100 is filled with concrete, ensuring dimensional accuracy of the completed column.
  • lost column formwork assembly and its constituent parts, can be scaled and numbered as required, to produce columns of varying sizes.
  • FIG. 7 there is illustrated a second shell portion 20A for use with the first shell portion 10A.
  • Figures 8 through 11 there is illustrated the lost column formwork assembly 100 A according to the further embodiment. Those parts of the lost column formwork assembly 100 A which are identical (or near- identical) to corresponding parts shown in the lost column formwork assembly 100 of Figures 1 through 4, will be denoted by the same reference numerals and will not be described again in detail.
  • the lost column formwork assembly 100 A is sized to form part of a larger column than is formwork assembly 100.
  • the design of a lost column fonnwork assembly will vary depending on the shape and dimensions of the column, and the structural requirements of the column.
  • Tire parallel sides 14 of the first shell portion 10A are approximately double the length of the parallel sides 24 of the second shell portion 20A.
  • Each of the pair of parallel sides 14 of the first shell portion 10A comprises a pair of parallel, equi-spaced spacer elements 30 depending therefrom and extending therealong.
  • the second shell portion 20A comprises a pair of parallel, spaced apart rows of apertures 26 extending therealong.
  • the method of assembly of lost column formwork assembly 100 A is much the same as that for assembling lost column formwork assembly 100 described above.
  • the separate spacing elements 30 are secured to the upper ends of each of these, the first shell portion 10A and the second shell portion 20A are joined along their matching edges E, and then each spacer element 30 for the second shell portion 20A is secured thereto via welding in the apertures 26.
  • the assembled lost column formwork assembly 100 A comprises a parallel pair of rows of spaced apart transverse bracing elements 40A extending therealong, and a parallel pair of rows of spaced apart transverse bracing elements 40A extending therealong.
  • FIG. 12 there is illustrated a detail view of an end of the second shell portion 20A, permitting visibility of a lifting lug plate 70 via which the second shell portion 20A, and ultimately the lost column formwork assembly 100A, can be hoisted for transport and final positioning on the building site.
  • Figures 13 through 15 each illustrate an additional embodiment of a lost column formwork assembly. Each of these is intended for use in forming a column of a different size. As before, those parts of the lost column formwork assemblies which are identical (or near- identical) to corresponding parts shown in the lost column formwork assembly 100 of Figures 1 through 4, will be denoted by the same reference numerals and will not be described again in detail.
  • the reinforcement framework 50 comprises an outer hoop 52 of reinforcement bar, and inner hoops 52a.
  • the embodiments of Figures 13 and 14 comprise two inner hoops 52a, and the embodiment of Figure 15 comprises three inner hoops 52a.
  • the design of the reinforcement framework 50 will vary depending on the shape and dimensions of the column, and the structural requirements of the column.
  • the lost column formwork assembly ensures that the required axis distance is maintained across its length, is braced against bulging under the hydrostatic pressure of concrete filling, and is quicker and easier to assemble than commonly known alternatives.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

La présente invention se rapporte à un coffrage. Dans un mode de réalisation particulier, la présente invention concerne un coffrage de colonne perdue. Selon un aspect de l'invention, l'invention concerne une partie de coque de coffrage à colonne perdue comprenant un corps allongé comprenant une forme de section transversale généralement en forme en U comprenant une paire de bords s'étendant dans le sens de la longueur, un côté interne et un côté externe, et au moins un élément espaceur dépendant du côté interne de la partie de coque et faisant saillie vers l'intérieur. Selon un autre aspect, l'invention concerne un ensemble coque de coffrage à colonne perdue comprenant une paire de parties de coque jointes le long de leurs bords s'étendant dans le sens de la longueur. Dans un autre aspect, l'invention concerne un ensemble de coffrage de colonne perdue, un ensemble coque, une entretoise et un renforcement. L'ensemble de coffrage de colonne perdue garantit que la distance axiale requise est maintenue sur toute sa longueur, est serré contre le bombement sous la pression hydrostatique du remplissage de béton, et est plus rapide et plus facile à assembler que les alternatives couramment connues.
EP20856369.2A 2019-08-28 2020-08-26 Améliorations apportées à un coffrage de colonne Pending EP4022151A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2019903147A AU2019903147A0 (en) 2019-08-28 Column formwork improvements
PCT/AU2020/000090 WO2021035280A1 (fr) 2019-08-28 2020-08-26 Améliorations apportées à un coffrage de colonne

Publications (2)

Publication Number Publication Date
EP4022151A1 true EP4022151A1 (fr) 2022-07-06
EP4022151A4 EP4022151A4 (fr) 2023-09-06

Family

ID=74683231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20856369.2A Pending EP4022151A4 (fr) 2019-08-28 2020-08-26 Améliorations apportées à un coffrage de colonne

Country Status (4)

Country Link
US (1) US20220325523A1 (fr)
EP (1) EP4022151A4 (fr)
AU (1) AU2020335024A1 (fr)
WO (1) WO2021035280A1 (fr)

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US5511908A (en) * 1994-04-18 1996-04-30 The United States Of America As Represented By The Secretary Of The Navy Mobile safety structure for containment and handling of hazardous materials
US7464512B1 (en) * 2004-03-10 2008-12-16 Perina Mark J Hollow structural member
US20070278380A1 (en) * 2006-05-30 2007-12-06 Marker Guy L Column and beam construction
US20090282753A1 (en) * 2008-05-19 2009-11-19 Chin-Lu Kuan Shock-Resisting Steel Concrete Structure
KR200454452Y1 (ko) * 2008-09-18 2011-07-06 이재수 건축물용 기둥체
CO6290099A1 (es) * 2009-12-10 2011-06-20 Pimiento Efrain Rojas Sistema de encofrado metalico graduable para estructuras en concreto
KR101584008B1 (ko) * 2014-11-10 2016-01-20 (주)더나은구조엔지니어링 성형강판을 이용한 기둥 영구거푸집
KR101752275B1 (ko) * 2015-10-02 2017-06-30 (주)엔아이스틸 성형강판을 이용하여 내부에 t형 돌기를 갖는 기둥 영구거푸집
CN106032701B (zh) * 2015-11-06 2018-12-25 广州容联建筑科技有限公司 一种钢筋混凝土柱的自平衡整体式模板拼装结构
KR101758493B1 (ko) * 2015-12-21 2017-07-17 주식회사 포스코 프리캐스트 영구거푸집 및 그 시공방법
KR101715143B1 (ko) * 2016-07-15 2017-03-13 한국건설기술연구원 일자형 볼트조립슬롯 및 파형펀칭강판을 사용한 무용접 방식의 콘크리트 충전 강관기둥 및 그 시공방법
WO2018107234A1 (fr) * 2016-12-14 2018-06-21 Starpartner Pty Ltd Élément de coffrage permanent pour un élément de support de colonne ou de poutre
KR20190041785A (ko) * 2017-10-13 2019-04-23 (주)센벡스 강합성콘크리트용 선조립 철골 조립체와 경량 영구거푸집의 결합 구조

Also Published As

Publication number Publication date
WO2021035280A1 (fr) 2021-03-04
US20220325523A1 (en) 2022-10-13
EP4022151A4 (fr) 2023-09-06
AU2020335024A1 (en) 2022-03-31

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