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
  • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
  • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
  • E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
  • E04G11/22—Sliding forms raised continuously or step-by-step and being in contact with the poured concrete during raising and which are not anchored in the hardened concrete; Arrangements of lifting means therefor
• • 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
  • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
  • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
  • E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
  • E04G11/26—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like the sheathing of which consists of ribbons, endless aprons or the like, guided by driven rollers

Definitions

• the invention relates to a method for erecting a concrete wall on a ground surface using a vertically movable shuttering, wherein before pouring concrete a lining is provided on the parts of the shuttering intended to contact the concrete, which lining during the movement of the vertically movable shuttering is maintained stationary relative to the concrete, and which lining will be removed from the concrete wall when the concrete has cured to a certain degree.
• the speed with which the shuttering can be lifted would be strongly limited to avoid an excessive moisture loss from the poured concrete with concurrent detrimental effect on the final quality of the concrete.
• the concrete curing speed would allow an increase of the lifting speed (in other words, the concrete already would have cured sufficiently to leave the lower side of the shuttering without sagging), the moisture loss after leaving the shuttering would be too high then.
• the power demand for lifting the shuttering would strongly increase with an increase of the lifting velocity.
• an increase of the lifting velocity would negatively influence the surface quality, and thus appearance, of the finished concrete wall.
• a lining is supplied at the top of the shuttering corresponding to the lifting of the shuttering. After being supplied the lining does not move relative to the poured concrete, but assumes a fixed position relative thereto. When the shuttering is lifted, an already fabricated part of the concrete wall leaves the shuttering while still covered by the lining.
• This offers several advantages: firstly the lining prevents an excessive moisture loss of the poured concrete; secondly the lining offers a low friction between itself and the moving shuttering; thirdly the surface quality of the concrete wall can be improved notwithstanding the fact that the shuttering is moved relative to the concrete wall.
• the lining is provided by caterpillar-like elements which are supported at their side facing away from the concrete wall by a support member which corresponds to a movable shuttering, and which caterpillar-like elements should move around in such a manner that the parts thereof in contact with the poured concrete do not move relative thereto.
• the method is characterized in that the lining comprises at least one separate lining element which is maintained stationary by being temporarily mechanically connected to a stationary part.
• said stationary part is the ground surface on which the concrete wall is erected.
• said stationary part is a part of the concrete wall that already has cured to a certain degree, or that said stationary part is a separate support frame positioned alongside the concrete wall being erected.
• the lining further is supported temporarily in a direction substantially perpendicularly to its surface.
• Such a support avoids that part of the lining moves away from the concrete wall when the movable shuttering is lifted above such part of the lining.
• Such a movement could be a result of the weight of the lining, and results in a space between the lining and the concrete wall negatively influencing the surface quality of latter.
• such a support may be provided by support members connected to a separate support frame positioned alongside the concrete wall being erected.
• This support frame may be the same support frame to which the lining is mechanically connected to keep it stationary.
• both functions of connecting the lining mechanically to such a support frame and supporting the lining in a direction substantially perpendicularly to its surface could be combined in one and the same member (or a number of such members).
• the support is provided by reinforcement members attached to and extending along the lining.
• reinforcement members may be profiled members or alike which can be attached quickly and easily to the lining part when the movable shuttering has been lifted sufficiently to expose such part.
• Yet another embodiment of the method according to the present invention is used for erecting a concrete wall of which one side engages an already existing structure, such as for example a sheet piling or the wall of an excavation, wherein opposite said structure, at a certain distance thereto, a support frame for the vertically movable shuttering is positioned along which the vertically movable shuttering will be lifted during pouring concrete, which support frame will be removed after completing the concrete wall.
• an already existing structure such as for example a sheet piling or the wall of an excavation
• the method according to the above mentioned embodiment offers the possibility of using a much smaller vertical movable shuttering (compared to the massive stationary shuttering with supporting frame), which leads to smaller loads that have to be transferred to the surroundings.
• a much smaller vertical movable shuttering compared to the massive stationary shuttering with supporting frame
• supporting frames for transferring loads to the surroundings (floors, frames, sheet pilings etcetera).
• an upper part of the support frame is connected to the already existing structure. Because of the relative moderate loads occurring during pouring the concrete wall, such a connection at an upper part of the support frame will be sufficient to handle the loads.
• the dimensions of the constitutive parts of the support frame itself also will be limited and standardised constitutive parts (profiles, beams) may be used without the need for reinforcing measures.
• a material is positioned offering a low degree of friction.
• Such a material also could be positioned at the interface between vertically moving shuttering and support frame.
• the lining may be provided in different manners.
• the lining comprises a number of separate elements adjoining each other.
• the handling of such separate elements is easy compared to the provision of a single unitary. This handling not only relates to the provision of the lining before the concrete is poured, but also relates to the removal of the lining from the concrete wall when the concrete has cured sufficiently.
• each element could comprise a multi-ply panel coated with phenol resin.
• multi-ply also could be provided when the lining comprises a single unitary part or only a very reduced number of lining parts.
• Such a multi-ply coated with phenol resin is an example of a lining which, on one hand, offers all the required characteristics (among which moisture barrier, low friction) and, at the other hand, is durable and can be removed from the completed wall in an easy manner without damaging the surface of the concrete wall, thus providing the wall with a good quality surface.
• the lining comprises a flexible sheet.
• a flexible sheet would comprise a single unitary part, but it is also conceivable that the lining is made up of a number of separate flexible sheets (which, then, preferably should be positioned in an overlapping manner such as to provide a continuous lining).

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Moulds, Cores, Or Mandrels (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=37865732

Family Applications (1)

Country Status (1)

Citations (6)

• 2006
  • 2006-10-12 EP EP06122162A patent/EP1911908A1/fr not_active Withdrawn

Patent Citations (6)

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