EP0730063A1 - Procédé de moulage pour la fabrication d'éléments en porte-à-faux en béton renforcé et système de coffrage pour le procédé - Google Patents

Procédé de moulage pour la fabrication d'éléments en porte-à-faux en béton renforcé et système de coffrage pour le procédé Download PDF

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Publication number
EP0730063A1
EP0730063A1 EP96830087A EP96830087A EP0730063A1 EP 0730063 A1 EP0730063 A1 EP 0730063A1 EP 96830087 A EP96830087 A EP 96830087A EP 96830087 A EP96830087 A EP 96830087A EP 0730063 A1 EP0730063 A1 EP 0730063A1
Authority
EP
European Patent Office
Prior art keywords
bracket
bearing structure
support bracket
molding
support
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.)
Granted
Application number
EP96830087A
Other languages
German (de)
English (en)
Other versions
EP0730063B1 (fr
Inventor
Leonardo Cappi
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.)
RIVOLI SpA
Original Assignee
RIVOLI SpA
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
Application filed by RIVOLI SpA filed Critical RIVOLI SpA
Publication of EP0730063A1 publication Critical patent/EP0730063A1/fr
Application granted granted Critical
Publication of EP0730063B1 publication Critical patent/EP0730063B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • 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
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced

Definitions

  • the invention relates to a box molding process for realizing projecting elements in reinforced concrete, and a molding system therefor, in particular for building elements for bridges, viaducts and roofs.
  • a first building method proposes the use of special reinforced supports equipped with trestles, which are fixed to an underlying bearing structure, such as a beam, a box-shaped element or the like.
  • a further drawback inherent in the above system is the difficulty of positioning the reinforcement rods due to their having to pass through the inside of the stirrups of the trestles, a time-consuming task.
  • a still further inconvenient is the occurrence of uneven settling during the concrete casting operation. This unevenness leads to incorrect alignments of the trestle caissons, which are impossible to put right: consequently, a second operation is needed for setting the lateral wings.
  • a second constructional system for realizing projecting elements involves the use of a projecting bridge system supported by a strut and tie-rod assembly.
  • this system requires the presence of a strut element extending vertically from the bearing structure, which strut opposite end is constrained on one side by a tie rod fixed to the underlying structure and on the other side by a free end of a projecting slab.
  • This system also exhibits a series of problems, a first of which is the elevated deformability of the system, rendering the system utilizable only with limited-size projections. Further, the slab must be provided with attachments for anchoring the tie-rod; then, once the concrete has been cast and the slab rendered solid, the tie rods and cut and the attachments, being situated inside the setting concrete, are lost.
  • a third constructional system for realizing projecting elements involves the creation of an external mold, supported by a scaffold.
  • a still further system proposes the use of a slab supported by a bracket anchored to the side wall of the bearing structure.
  • the main aim of the present invention is to resolve the above-described problems inherent in the prior art by providing projecting elements of considerable size by means of a boxing system and process therefor which permits of varying the size of the projections of the concrete simply, without incurring increased manufacturing costs, and without any time-wasting.
  • the invention is also easy to construct and use.
  • a further aim of the invention is to provide a box mold system and realization process therefor which do not necessitate the use of massy and complex structures disturbing the insertion of the reinforcement rods of the slab, as happened in the prior art systems.
  • a still further aim of the present invention is to obtain projecting elements having various geometrical and static properties, without having recourse to making alterations in the conformation of the box molds used. Further, with the process, correct positioning of the mold slab is ensured since the projections can be aligned and any height errors made during casting can be corrected, unlike in the prior art realizations.
  • a further aim of the present invention is to realize a support structure for the mold box which can be saved after used and reutilized.
  • a still further aim of the invention is to realize the projections at contained cost with regard to the plant and the tools used, to better use of work time, considerable adaptability of use, and with regard to increased, indeed optimum safety for operators during both mounting and dismounting phases of the elements which constitute the projection mold box.
  • 1 denotes in its entirety a manufacture comprising a projecting element and relative box mold system according to the present invention.
  • 2 denotes a bearing structure which can be a beam or a box-like structure for making bridges and ⁇ or roofing elements.
  • the box mold system used in the process of the present invention comprises a bracket 6 predisposed to contact with a pivot 4 located on a support 3 made in reinforced concrete and having a parallelepiped conformation.
  • the support 3 rests on and ⁇ or is anchored to the bearing structure 2.
  • an attachment element 5a is situated on an end 6a of the bracket 6, which attachment element 5a will engage with a tie-rod 5 anchored to the bearing structure 2 such as to constrain the bracket 6 to the bearing structure 2.
  • At another end 6b of the bracket 6 is a plurality of holes 7 arranged in two parallel lines and specially distanced one from another.
  • the holes 7 will be engaged by a pair of plugs 12 constraining a support bracket 8 to the bracket 6 at a predetermined distance corresponding to the dimensions of the projecting element to be constructed.
  • a first plug 12a serves to rotatably engage the support bracket 8, while a second plug 12b serves to block rotation thereof.
  • the support bracket 8 is substantially L-shaped, one arm of the L being constrained to the bracket 6 by means of the plugs 12 which insert in the holes 7 in the bracket 6 while the other arm of the L constitutes a rest base of a small support square 9.
  • the process of the present invention comprises a plurality of operative phases for realizing the molding, with the aim of constructing a projecting element of considerable dimensions on the bearing structure 2, and of dismounting the mold itself once the concrete cast and the concrete slab have hardened.
  • Figure 3 illustrates a subsequent phase involving the positioning of a bracket 6 restingly on the pivot 4 and constrained to the tie-rod 5 by an attachment element 5a.
  • bracket 6 By acting on the tie-rod 5 through the attachment element 5a the bracket 6 is adjusted, bringing it to the exact height required: this adjustment operation can be repeated during subsequent operative phases.
  • a support bracket 8 is positioned at a predetermined distance from the pivot 4, said predetermined distance depending on the length of the projection to be realized.
  • the support bracket 8 is connected to the bracket 6 by means of a first plug 12a which is inserted in a hole 7 and blocked by a second plug 12b which is inserted in another hole 7 arranged vertically with respect to the preceding hole 7.
  • the following phase of the process involves the placing of a squaring beam 9 between the bracket 6 and the support bracket 8, as shown in figure 4.
  • the molding slab 10 is positioned, the ends whereof rest respectively on the squaring beam 9 and the bearing structure 2.
  • the mold box for the projecting element is ready and the reinforcements can be arranged ready for the slab and projection.
  • the height of the future projection can once more be adjusted if necessary.
  • the concrete can be cast into the mold constituted by the squaring beam 9, the molding slab 10 and the bearing structure 2, as shown in figure 6.
  • Figure 8 shows how the bracket 6 is removed: after having been detached from the tie-rod 5 and the support bracket 8, it is lifted while the tie-rod 5 and the pivot 4 are immersed in the cast.
  • a lateral curb 11 can be made, already squared in the external side of the squaring beam 9, meaning that it is sufficient to add a containing element in the internal side to complete the squaring of the lateral curb 11.
  • the invention thus achieves its set aims. Indeed, a multiplicity of realizations can be achieved using the invention, all having different projection reaches thanks to the flexibility and practicality of use of the elements composing the molding system of the invention.
  • the process according to the invention obviates all the drawbacks in the prior art and does away with the need for awkward trestles while allowing for great simplicity in the arranging of the reinforcing rods in the mold slab.
  • the process of the invention enables repeated aligning of the projections and therefore correction of small height errors, considerably reducing the possibility of deformations in the completed system.
  • the box-molding system of the invention comprises simple elements which can be utilized for obtaining projections having different dimensions and which can be reutilized many times.
  • the elements which make up the box mold of the present process enable the incorporating of the lateral beam 9 and the recuperation of the support bracket 8, which can be reutilized.
  • the process enables the mounting and dismounting operations of the box mold structural elements to be carried out in complete safety.

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)
  • Bridges Or Land Bridges (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP96830087A 1995-03-01 1996-02-29 Procédé de moulage pour la fabrication d'éléments en porte-à-faux en béton renforcé et système de coffrage pour le procédé Expired - Lifetime EP0730063B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMN950006 1995-03-01
IT95MN000006A IT1282248B1 (it) 1995-03-01 1995-03-01 Procedimento di casseratura per la realizzazione di elememti a sbalzo in manufatti in casa e relativo sistema di casseratura

Publications (2)

Publication Number Publication Date
EP0730063A1 true EP0730063A1 (fr) 1996-09-04
EP0730063B1 EP0730063B1 (fr) 2003-08-27

Family

ID=11384511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830087A Expired - Lifetime EP0730063B1 (fr) 1995-03-01 1996-02-29 Procédé de moulage pour la fabrication d'éléments en porte-à-faux en béton renforcé et système de coffrage pour le procédé

Country Status (5)

Country Link
EP (1) EP0730063B1 (fr)
AT (1) ATE248255T1 (fr)
BR (1) BR9600640A (fr)
DE (1) DE69629609D1 (fr)
IT (1) IT1282248B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392536A (zh) * 2011-10-28 2012-03-28 山东万鑫建设有限公司 大跨度悬空通廊式模板支撑体系施工方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970823B (zh) * 2016-06-13 2017-11-24 中交第二航务工程局有限公司 一种用于大跨度、超高扭曲体的箱梁内模系统
CN110685227B (zh) * 2019-11-02 2021-11-02 中铁七局集团有限公司 跨障碍宽幅转体桥梁合拢段吊架法模板支撑体系施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1335057A (fr) * 1962-07-02 1963-08-16 Stup Procedes Freyssinet Perfectionnements aux procédés et dispositifs de construction de ponts en encorbellement
US3974995A (en) * 1974-08-26 1976-08-17 Guy Blonde Means for forming a building facade
BE849341A (fr) * 1976-12-13 1977-04-01 Procede permettant le betonnage de l'encorbellement d'un ouvrage d'art et element de support utilise a cet effet
US5083739A (en) * 1989-10-05 1992-01-28 Symons Corporation Concrete form support bracket for bridge overhang decks
EP0577004A1 (fr) * 1992-06-29 1994-01-05 Betomax AG Dispositif d'ancrage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1335057A (fr) * 1962-07-02 1963-08-16 Stup Procedes Freyssinet Perfectionnements aux procédés et dispositifs de construction de ponts en encorbellement
US3974995A (en) * 1974-08-26 1976-08-17 Guy Blonde Means for forming a building facade
BE849341A (fr) * 1976-12-13 1977-04-01 Procede permettant le betonnage de l'encorbellement d'un ouvrage d'art et element de support utilise a cet effet
US5083739A (en) * 1989-10-05 1992-01-28 Symons Corporation Concrete form support bracket for bridge overhang decks
EP0577004A1 (fr) * 1992-06-29 1994-01-05 Betomax AG Dispositif d'ancrage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392536A (zh) * 2011-10-28 2012-03-28 山东万鑫建设有限公司 大跨度悬空通廊式模板支撑体系施工方法
CN102392536B (zh) * 2011-10-28 2013-05-01 山东万鑫建设有限公司 大跨度悬空通廊式模板支撑体系施工方法

Also Published As

Publication number Publication date
BR9600640A (pt) 1997-12-30
ITMN950006A1 (it) 1996-09-01
ATE248255T1 (de) 2003-09-15
IT1282248B1 (it) 1998-03-16
EP0730063B1 (fr) 2003-08-27
DE69629609D1 (de) 2003-10-02

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