EP1918474A1 - Procédé pour couler un plancher structurel, plancher structurel et dalle de béton à âme alvéolaire et élément en forme de bande pour ledit plancher structurel - Google Patents
Procédé pour couler un plancher structurel, plancher structurel et dalle de béton à âme alvéolaire et élément en forme de bande pour ledit plancher structurel Download PDFInfo
- Publication number
- EP1918474A1 EP1918474A1 EP07119043A EP07119043A EP1918474A1 EP 1918474 A1 EP1918474 A1 EP 1918474A1 EP 07119043 A EP07119043 A EP 07119043A EP 07119043 A EP07119043 A EP 07119043A EP 1918474 A1 EP1918474 A1 EP 1918474A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- structural floor
- hollowcore
- concrete slabs
- hollowcore concrete
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
- E04B5/06—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed against one another optionally with pointing-mortar
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
- E04B5/043—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement having elongated hollow cores
Definitions
- the invention relates to a method for pouring a structural floor, according to which hollowcore concrete slabs are placed at least substantially united onto beams, after which a space between the hollowcore concrete slabs is filled with a mortar.
- the beams will be made of concrete or steel.
- a beam never is completely rigid. For that reason the beam will always bend when loaded. The result of this bending is a pressure force, generated in the upper half of a hollowcore concrete slab. More in particular this pressure force is generated near beam. The force may become so big that near the beam the hollowcore concrete slab collapses. In practise, the beam is therefore constructed more rigid than strictly speaking would be necessary, which increases the costs.
- the method according to the invention substantially obviates this disadvantage and is characterised in that before pouring the mortar at least near the beams, in the space between the hollowcore concrete slabs, a strip is inserted, made of a flexible material. In this way, a transfer of a pressure force from one hollowcore concrete slab to another hollowcore concrete slab is prevented, which in fact means that this pressure force will not come into being.
- a further favourable realisation in which a minimum amount of strip may be used is characterised in that the strip is inserted only in an upper part of the space between the beams.
- the computer model also shows that unacceptably high shearing forces may occur only for hollowcore concrete slabs which are situated on the beam near the columns.
- a further favourable realisation is therefore characterised in that the strip is inserted only between hollowcore concrete slabs which are located near columns.
- the invention also relates to a structural floor, comprising beams with hollowcore concrete slabs placed on it, as well as a filling material for filling a space between the hollowcore concrete slabs.
- Structural floors of this type are known.
- a problem with the known structural floors is that sometimes hollowcore concrete slabs become defective near the beams.
- the structural floor according to the invention substantially obviates this disadvantage and is characterised in that the structural floor moreover comprises strip-shaped elements, made of a flexible material, inserted in the space between the hollowcore concrete slabs, near the beams.
- a favourable embodiment of the inventive structural floor is characterised in that a strip-shaped element is made of a synthetic material or a rubber compound which may be embedded into the filling material.
- the strip-shaped element is provided with means for attachment, made so that it may be suspended centrally in a space between two hollowcore concrete slabs, before the filling material is poured.
- a favourable alternative embodiment is characterised in that at least near an extremity a hollowcore concrete slab is provided with a recess in which a strip-shaped element may be inserted.
- the strip-shaped element forms in fact part of the hollowcore concrete slab.
- the invention also relates to a hollowcore concrete slab, provided with a recess on at least one extremity in which a strip-shaped element may be inserted with a length of at least 200 millimetres, to be used as part of a structural floor as described in one of the previous paragraphs.
- the invention also relates to a strip-shaped element made of a synthetic material or a rubber compound with a length of at least 300 millimetres, to be used as part of a structural floor as described in one of the previous paragraphs.
- Fig. 1 schematically represents a possible embodiment of a structural floor in front view, consisting of beams 1, supported by columns 2, onto which beams 1 hollowcore concrete slabs 3 are placed, after which a concrete mixture is poured into the space between the hollowcore concrete slabs.
- a solid beam is used, but of course one may also use integrated beams which are completely integrated in the floor.
- Beam 1 is not rigid and will for that reason slightly bend. As a result of this bending, a pressure force is generated in an upper half of the hollowcore concrete slab. In the centre of the span length of support, the pressure force will be the largest and above columns 2 it will be practically zero. The change of the strength of the pressure force is the largest above columns 2 and in the centre of the span length of support it will be practically zero. The change of the pressure force is generated by shearing forces. These shearing forces, which act in a longitudinal direction of beam 1, must be passed through via the thin bridges between the channels 4 of the hollowcore concrete slabs.
- the additional shearing forces which act in a direction perpendicular to the usual shearing force, may cause the bridges to collapse, which in fact means that a hollowcore concrete slab collapses.
- the pressure force in the upper half of the hollowcore concrete slabs is passed via the spaces between the hollowcore concrete slabs, the so-called U-butt joints, which are filled with a concrete mixture. Therefore, according to the invention, prior to the pouring a strip, made of a flexible material is placed inside the U-butt joints, which effectively prevents the building-up of a pressure force.
- Fig. 2 schematically represents this structural floor in top view, with beams 1, supported by columns 2, onto which beams 1 hollowcore concrete slabs 3 are placed.
- strips 5 are placed in a number of selected spaces between hollowcore concrete slabs 3, which are made of a flexible, compressible synthetic material or rubber. In this way a local build-up of too large pressure forces is prevented.
- the selected places are situated on both sides of beams 2, on both sides of columns 2, as without this measure the largest shearing forces would build-up on these locations.
- Strips 5 have a length of about 500 millimetres and they are placed in for example 30% of the joints between the hollowcore concrete slabs.
- Fig. 3A schematically represents in cross section two hollowcore concrete slabs 3 and a strip 5 placed in between.
- strip 5 is suspended inside the U-butt joint between hollowcore concrete slabs 3 with the aid of a bracket 6 and forms an integral part of the structural floor after pouring.
- the width of strip 5 may be much smaller than the thickness of hollowcore concrete slabs 3.
- the width of a strip 5 amounts to for example 20-30% of the thickness of a hollowcore concrete slab 3.
- Fig. 3B schematically represents in cross section two hollowcore concrete slabs 3, which are each provided with strips 5a,5b that form integral parts of the corresponding hollowcore concrete slab 3.
- the width of strips 5a,5b may be much smaller than the thickness of hollowcore concrete slabs 3.
- the width of strips 5a,5b amounts to for example 20-30% of the thickness of a hollowcore concrete slab 3. It is also possible to manufacture hollowcore concrete slabs 3 provided with only one strip. The disadvantage is that while the hollowcore concrete slabs 3 are placed, one has to pay attention to the orientation of the hollowcore concrete slabs.
- Fig. 4A perspectively represents a strip 5 provided with fixation means 6.
- Fixation means 6 are for example manufactured of metal plate or plastic and the dimensions are such that on a bottom side strip 5 is clamped, while on the top the wings 7a,7b have such a length that they may rest on two neighbouring hollowcore concrete slabs.
- Fig. 4B perspectively represents a strip provided with two carrying brackets 8a,8b.
- Carrying brackets 8a,8b are manufactured for example of steel wire and the dimensions are such that on a bottom side strip 5 is clamped, while on the top the ends have such a length that they may rest on two neighbouring hollowcore concrete slabs.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1032778A NL1032778C1 (nl) | 2006-10-31 | 2006-10-31 | Werkwijze voor het storten van een systeemvloer, systeemvloer, alsmede een kanaalplaat en een stripvormig element voor een dergelijke systeemvloer. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1918474A1 true EP1918474A1 (fr) | 2008-05-07 |
Family
ID=38983230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07119043A Withdrawn EP1918474A1 (fr) | 2006-10-31 | 2007-10-23 | Procédé pour couler un plancher structurel, plancher structurel et dalle de béton à âme alvéolaire et élément en forme de bande pour ledit plancher structurel |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1918474A1 (fr) |
NL (1) | NL1032778C1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB538101A (en) * | 1940-01-19 | 1941-07-21 | Alfred George Rowse | Improvements in the construction of concrete floor or roofing structures |
FR2383283A2 (fr) * | 1977-03-10 | 1978-10-06 | Saret | Panneau de construction a structure resistante et batiment comportant un ensemble de tels panneaux |
FR2540161A1 (fr) * | 1983-02-01 | 1984-08-03 | Bouygues Sa | Procede et elements pour la realisation d'un plancher de batiment en beton arme |
US20050204671A1 (en) * | 2004-03-16 | 2005-09-22 | The Cretex Companies, Inc. | Concrete section joint apparatus and method |
-
2006
- 2006-10-31 NL NL1032778A patent/NL1032778C1/nl not_active IP Right Cessation
-
2007
- 2007-10-23 EP EP07119043A patent/EP1918474A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB538101A (en) * | 1940-01-19 | 1941-07-21 | Alfred George Rowse | Improvements in the construction of concrete floor or roofing structures |
FR2383283A2 (fr) * | 1977-03-10 | 1978-10-06 | Saret | Panneau de construction a structure resistante et batiment comportant un ensemble de tels panneaux |
FR2540161A1 (fr) * | 1983-02-01 | 1984-08-03 | Bouygues Sa | Procede et elements pour la realisation d'un plancher de batiment en beton arme |
US20050204671A1 (en) * | 2004-03-16 | 2005-09-22 | The Cretex Companies, Inc. | Concrete section joint apparatus and method |
Also Published As
Publication number | Publication date |
---|---|
NL1032778C1 (nl) | 2008-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5806676B2 (ja) | フロア及びルーフのフレーム構造を補強及び軽量化するための方法及び装置 | |
US20060188336A1 (en) | Adjustable support bracket for concrete reinforcing bars | |
JPH10231578A (ja) | 建屋構造 | |
JP6379045B2 (ja) | 梁底型枠用支持金具とPCa梁ジョイント部の構造とその構築方法 | |
JP5367297B2 (ja) | プレキャスト横桁とプレキャスト縦桁とを備えた橋梁およびその施工法 | |
JP6108595B2 (ja) | リブ付きプレキャストコンクリート板と、それを用いた合成床スラブと梁のコンクリート打ち分け方法 | |
JP5943332B2 (ja) | 点支持されたコンクリート天井 | |
JP2005529255A (ja) | 中空コアを有するコンクリートパネルの製造方法 | |
JP2008303702A (ja) | 双方向のプレストレッシングシステム及び折曲部形成装置 | |
EP1877632B1 (fr) | Procede de production d une structure de plancher composee d acier et de beton | |
WO1998057010A1 (fr) | Coffrage pour cage d'escalier | |
EP1918474A1 (fr) | Procédé pour couler un plancher structurel, plancher structurel et dalle de béton à âme alvéolaire et élément en forme de bande pour ledit plancher structurel | |
KR101815009B1 (ko) | 전도방지용 측면합성블록이 형성된 거더를 이용한 라멘교 시공방법 | |
KR20140069752A (ko) | 철근매입에 의한 전단벽 등분포보강 및 단부보강 공법 | |
JP6517121B2 (ja) | 埋設型枠 | |
KR20090009350A (ko) | 슬래브-기둥 접합부용 전단보강체 및 그를 이용한전단보강구조 | |
JP4021588B2 (ja) | 梁・床のコンクリート分離打設工法およびコンクリート分離打設による梁・床構造 | |
KR101303547B1 (ko) | 옹벽용 알루미늄 폼의 하부를 일직선으로 설치하는 장치 | |
US20180355626A1 (en) | Bulkhead assembly for use with a concrete form | |
JP2003129676A (ja) | コンクリート躯体の補強方法 | |
JP6838984B2 (ja) | 既存柱軸力の仮受け構造及び免震工事方法 | |
KR100974672B1 (ko) | 절곡강판을 이용하여 댑단부가 보강된 피씨 보 | |
CN115198902B (zh) | 一种混凝土伸缩缝结构及其施工方法 | |
JP7022052B2 (ja) | 既存床の補強方法 | |
BE1030878B1 (nl) | Tafel voor vervaardiging van een betonwelfsel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20081108 |