EP1705313B1 - Poteau renforcé avec console et méthode de réalisation - Google Patents

Poteau renforcé avec console et méthode de réalisation Download PDF

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Publication number
EP1705313B1
EP1705313B1 EP05466004A EP05466004A EP1705313B1 EP 1705313 B1 EP1705313 B1 EP 1705313B1 EP 05466004 A EP05466004 A EP 05466004A EP 05466004 A EP05466004 A EP 05466004A EP 1705313 B1 EP1705313 B1 EP 1705313B1
Authority
EP
European Patent Office
Prior art keywords
console
column
anchor
prestressed
anchored
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.)
Active
Application number
EP05466004A
Other languages
German (de)
English (en)
Other versions
EP1705313A2 (fr
EP1705313A3 (fr
Inventor
Jiri Chalabala
Ladislav Klusacek
Martin Solarik
Jan Pencik
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.)
Peem spol sro
Original Assignee
Peem spol sro
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 CZ20040412A external-priority patent/CZ300892B6/cs
Priority claimed from CZ20040413A external-priority patent/CZ300893B6/cs
Application filed by Peem spol sro filed Critical Peem spol sro
Priority to PL05466004T priority Critical patent/PL1705313T3/pl
Publication of EP1705313A2 publication Critical patent/EP1705313A2/fr
Publication of EP1705313A3 publication Critical patent/EP1705313A3/fr
Application granted granted Critical
Publication of EP1705313B1 publication Critical patent/EP1705313B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/16—Prestressed structures
    • 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0225—Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing

Definitions

  • the invention relates to the reinforcement of an existing armoured concrete console column with consoles by pre-stressing, which will enable manipulation with heavier products in old production halls than those for which the hall was originally designed, and the process of its reinforcement.
  • the problem may be dealt with by installing a new carrying system for a new crane runway into the existing hall structure.
  • the new structure which is usually made of steel, requires, besides heavy expenses, an intervention into the layout of the hall space itself.
  • a new system of posts and separate footings will be added that must be embedded beside the existing modular system. The utility value of the hall space is thus reduced.
  • the stress analysis of the structural hall system usually demonstrates, in particular with terminal, less load carrying columns, where the strain is taken off the roof structure e.g. due to skylights, or if there is little transversal span between the columns, the insufficiency of the columns from the viewpoint of the strength limit state No. 1 (I.LS).
  • the aim of this invention is to present a solution ensuring enhanced load carrying capacity of the columns that would allow bridge cranes to be used with high load carrying capacity, while the manufacture of the invention will not limit operations in the production hall.
  • the anchor elements are created as anchor tubes and the prestressed guys are anchored in anchor sockets that fit to the outer surface of the tube from above and the guys go through them.
  • the prestressed guy goes angle-wise.
  • the hole and the anchor section are arranged in the upper part of the column section in the area from where the consoles are projecting.
  • the column is provided with four prestressed guys with two cables going along each side of the column element whose ends are anchored in the anchor tube from where the guys go crossways alongside the axis to the anchors in the foundation.
  • Another feature of the invention is the process of manufacture of the reinforced column where the guy is anchored on both sides of the column section with one end in the foundation and with the other one in the anchor element which is to be created in the upper part of the column section, subsequently the guy is prestressed either parallel with the axis of the column section or angle-wise, and a duct will be made in the console, vertical to the column axis, going through the console and the adjacent part of the column strut, afterwards a clamping cable (s) or bar is arranged in the duct and subsequently ptrestressed and anchored on both ends.
  • FIG. 1 is a side view of the reinforced column subject to the invention according to design no. 1 with two stay cables
  • Fig. 2 shows a front view of the same reinforced column
  • Fig. 3 shows a side view of the reinforced column subject to the invention according to design no. 2 with four stay cables
  • Fig. 4 shows a front view of the same reinforced column
  • Fig. 5 shows a schematic cross section of the reinforced console of the armoured concrete column subject to the invention with console on both sides for the crane runway
  • Fig. 6 shows a schematic cross section of the reinforced console of the armoured concrete column subject to the invention with a console for the crane runway on one side only
  • Fig. 7 shows a partial cross section of an alternative design of the reinforced console.
  • Figs. 1 and 2 show that the reinforced column 1 consists of an armoured concrete column section 2 equipped with a console 3 , on which beams 4 of the crane runway are mounted.
  • the column section 2 is embedded in the foundation 5 .
  • a hole is bored through the column section 2 , into which an anchor element 6 is embedded.
  • it is made as an anchor tube 7 .
  • the ends of the prestressed guys 8 are anchored into the anchor elements 6 by pulling the guy through the respective holes in the anchoring tube 7 , and in the downward direction the ends of the guys 8 are firmly fixed in the anchor sockets 9 that fit to the anchor tube 7 .
  • the bearing surface of the anchor sockets 9 has such a shape to allow it to fit to the tube 7 perimeter shape-wise.
  • the other end of the prestressed guy 8 is firmly anchored in the anchor 10 in the foundation 5 .
  • the prestressed guy 8 is arranged angle-wise, but this is not conditional. It may also be arranged vertically.
  • the reason of the arrangement of the guys 8 on the column element 2 is the reinforcement of column 1 in the direction of its axis.
  • the hole with the anchor tube 7 is made in the upper part of the column section 2 taking advantage of the spot where the consoles 3 project from the section.
  • Figs. 3 and 4 show the embodiment of the reinforced column 1 provided with four prestressed guys 8 . Afterwards the ends of both guys 8 are arranged in the anchor tube 7 on each side of the column section 2 ;from there the guys 8 go crossways to the anchors 10 in the foundation 5 .
  • Fig. 5 shows that consoles 3 for crane runways are projecting from the armoured concrete column 1 on both sides, on which beams 4 for bridge crane tracks will be mounted. Both consoles 3 are interconnected by pre-bored ducts 12 , vertical to the column 1 axis.
  • the prestressed clamping cables 13 or rather bars, go through these pre-bored ducts 12 . They are anchored on each side in the anchor sockets 15 with nuts. There is an anchor plate 14 under the anchor sockets.
  • the upper prestressed clamping cable(s) 13 is led in the upper part of the consoles 3 where the lateral surface is vertical to the pre-bored duct 12 .
  • the anchor plate 14 will easily fit to the side of the console 4 .
  • the lower prestressed clamping cable 13 is led in the bottom part where the bottom wall of the console 3 joins the strut angle-wise: A recess 11 is made around the duct 12 with its front parallel to the axis of the column 1 . The anchor plate 14 will then easily lean against this front.
  • Fig. 6 shows the reinforced (e.g. terminal) console column 1 also consisting of a strut from which, however, a console 3 for beam 4 projects, on which the tracks for the bridge crane are mounted on one side only.
  • the console 3 and the adjacent part of the strut are interconnected by pre-bored ducts 12 , vertically to the axis of the column 1 .
  • Prestressed clamping cables 13 or rather bars are led through these pre-bored ducts 12 . They are anchored on each side in the anchor sockets 15 with nuts. Under the anchor sockets there is the anchor plate 14 .
  • a recess 11 is made in the oblique wall of the console 3 .
  • Fig. 7 shows details of a solution in which the recess 11 referred to in the previous designs is not used for the lower post-tensioning cable, but a spacer 16 is inserted in between the anchor plate 14 , which is oblique and lies on the unmodified oblique lateral wall of the console 3 , and the socket 15 with a nut.
  • the spacer corresponds on one side to the inclination of the oblique lateral wall of the console 3 and has a bearing surface for the anchor socket 14 on the other side parallel to the column axis.
  • the concept of a reinforced console of a column is based on a surprising discovery that, in contrast to the theories acknowledged so far, it is not necessary to apply counter pressure in the same direction against the direction of the stress.
  • console 3 is subject to downward stress and that the anticipated deforming fracture would go from the lower footing of the console crossways to the upper surface where the beam for crane tracks is mounted. So far theory would induce to anchor the cable on the oblique side of the console and to anchor its other end somewhere higher to the column so that the cable goes vertically to the fracture, i.e. against the direction of stress. It is obvious that such anchorage would be very demanding as far as the anchoring element on the column is concerned; it would require double boring of the column for ducts 12 in the bilateral console.
  • the use of a non-typical steel device mounted to the armoured concrete column allows for boring with a standard drill, even in the oblique part of the column console.
  • the minimum diameter of the borehole for one cable is 24 mm, being 40 mm for a cluster of cables.
  • the borehole is widened to a minimum diameter of 80 mm at its end with a depth of 170 mm.
  • the recess will allow for distributing the cables into the anchoring elements with permissible curvature.
  • the directioning itself of the prestressed clamping cables 13 is achieved by beveling the bearing surface for the anchors on the anchor bearing plate and directioning the cable entry.
  • Prestressing of each separate cable is carried out in 6 steps, starting at 0 kN and reaching the final value of 220 kN.
  • the prestressing procedure is checked during each step in accordance with the stress-strain diagram of the prestressing jack where the value of the operating pressure of the jack corresponds to the prestress force introduced.
  • the pressure is monitored with a pressure gauge.
  • Individual steps of the whole prestressing procedure are entered into a control record where the value of elongation in mm is entered with the particular value of the operating pressure of the prestressing jack in MPa.
  • the cable is re-tensioned twice with a 15-minute delay as a minimum.
  • the overall elongation of the cable, the anchorage of the opposite anchor and cable rectification may vary from 35 to 55 mm with commonly used consoles. Subsequently the cable is carefully anchored at the side where tensioning takes place.
  • Concrete compression from 50 ⁇ m/m to 90 ⁇ m/m is achieved by the above-mentioned method for standard types of consoles using three cables prestressed at 220 kN, depending on the particular value of the stress modulus of the column console concrete.
  • the widened area of the borehole is injected with a constant-volume sealing compound.
  • a grout hole is made in the anchor plate for this purpose.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (10)

  1. Poteau à console renforcé constitué du poteau proprement dit et de la console, caractérisé en ce que le poteau (2) est percé par un orifice dans lequel est introduit l'élément d'ancrage (6) sur les éléments d'ancrage (6) étant fixées les extrémités d'au moins deux cordes d'ancrage de mise en tension (8) sur les deux côtés du poteau, la corde d'ancrage (8) étant introduite dans les orifices respectifs dans l'élément d'ancrage (6). Sur l'autre extrémité la corde d'ancrage de mise en tension (8) est fixée dans l'élément d'ancrage (10) dans la base (5) la console (3) étant munie d'au moins un canal (12) sous l'angle droit par rapport à l'axe du poteau (1) qui traverse la console (3) et la partie adjacente de l'âme du poteau dans le canal étant disposée la corde d'ancrage précontrainte (13) ou la barre pourvue sur les deux extrémités des colliers d'ancrage (15) disposés sur les plaques d'ancrage (14).
  2. Poteau à console renforcé selon la revendication 1 caractérisé en ce que les éléments d'ancrage (6) sont conçus en tant que tubes d'ancrage (7) et les cordes d'ancrage de mise en tension (8) sont ancrées dans les colliers d'ancrage (7) qui sont réalisées de manière à s'appuyer sur la surface extérieure du tube (7) par lesquels traversent les cordes (5).
  3. Poteau à console renforcé selon la revendication 1 caractérisé en ce qu'au moins une corde (13) est située au-dessous de la surface supérieure de la console (3) de manière à ce que l'ancrage soit réalisé sur la partie plate de la paroi latérale parallèlement avec l'axe du poteau, et l'autre corde est réalisée dans la partie inférieure de la console (3) l'ancrage étant réalisé sur la partie inclinée de la paroi latérale.
  4. Poteau à console renforcé selon la revendication 7 caractérisé en ce que les plaques d'ancrage (14) de la corde d'ancrage inférieure (13) sont disposées sur la partie inclinée de la paroi latérale de la console (3) et entre la plaque d'ancrage (14) et le collier d'ancrage est disposé l'élément d'écartement compensateur (16) dont la surface d'appui sur la plaque d'ancrage (14) est inclinée de façon correspondante à l'inclinaison de la partie inclinée de la paroi latérale de la console (3).
  5. Poteau à console renforcé selon la revendication 1 caractérisé en ce que dans la console (3) au-dessous de la plaque d'ancrage (14) est situé un creux (17) servant à distribuer un faisceau de cordes et à injecter par la suite le mortier constant en volume.
  6. Mode de fabrication du poteau à console renforcé selon les revendications 1 à 9 où le poteau renforcé (1) est constitué du poteau (2) percé par un orifice dans lequel est posé l'élément d'ancrage (6) sur les éléments d'ancrage (6) étant fixées les extrémités d'au moins deux cordes d'ancrage de mise en tension (8) sur chaque côté du poteau (2) la corde d'ancrage (8) passant par les orifices respectifs dans l'élément d'ancrage (6) la corde d'ancrage (8) étant fixée sur l'autre extrémité dans l'élément d'ancrage (10) dans la base (5) où la console (3) est pourvue d'au moins un canal (12) sous l'angle droit par rapport à l'axe du poteau (1) qui passe par la console (3) et la partie adjacente de l'âme du poteau dans le canal étant disposé la corde de fixation précontrainte (13) ou la barre la corde étant pourvue sur les deux extrémités des colliers d'ancrage (15) posés sur les plaques d'ancrage (14) où la corde d'ancrage précontrainte est fixée sur les deux côtés du poteau par une extrémité dans la base et l'autre dans l'élément d'ancrage qui est créé dans la partie supérieure du poteau. Après, le corde d'ancrage est tendue, soit parallèlement avec l'axe du poteau, soit sous l'angle droit par rapport à l'axe du poteau la console étant pourvue d'au moins un canal qui est sous l'angle droit à l'axe du poteau qui passe par la console et la partie adjacente de l'âme du poteau dans le canal étant disposée la corde d'ancrage ou la barre qui est par la suite tendue et ancrée sur ses deux extrémités.
  7. Mode selon la revendication 10 caractérisé en ce que deux cordes sont fixées sur chaque côté du poteau les deux étant fixées dans l'élément d'ancrage et dirigées vers les éléments de fixation dans la base sous l'angle.
  8. Mode de fabrication du poteau à console selon la revendication 10 caractérisé en ce que l'une corde de fixation est disposée au-dessous de la surface supérieure de la console et l'autre dans la partie inférieure de la console sur la partie inclinée de sa paroi latérale.
  9. Mode de fabrication du poteau à console selon la revendication 12 caractérisé en ce que l'encastrement est réalisé sur la partie inclinée de la paroi latérale de la console.
  10. Mode de fabrication du poteau à console selon la revendication 10 caractérisé en ce que le canal est élargi sur le côté dans un creux qui rempli du mortier injecté après la mise en tension de la corde de fixation.
EP05466004A 2004-03-24 2005-03-24 Poteau renforcé avec console et méthode de réalisation Active EP1705313B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05466004T PL1705313T3 (pl) 2004-03-24 2005-03-24 Wzmocniona kolumna wspornikowa i sposób jej wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ20040412A CZ300892B6 (cs) 2004-03-24 2004-03-24 Zpevnená konzola a zpusob jejího zpevnení
CZ20040413A CZ300893B6 (cs) 2004-03-24 2004-03-24 Zesílený sloup na zvýšenou nosnost a zpusob jeho výroby

Publications (3)

Publication Number Publication Date
EP1705313A2 EP1705313A2 (fr) 2006-09-27
EP1705313A3 EP1705313A3 (fr) 2007-09-26
EP1705313B1 true EP1705313B1 (fr) 2009-12-02

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Application Number Title Priority Date Filing Date
EP05466004A Active EP1705313B1 (fr) 2004-03-24 2005-03-24 Poteau renforcé avec console et méthode de réalisation

Country Status (4)

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EP (1) EP1705313B1 (fr)
AT (1) ATE450680T1 (fr)
DE (1) DE602005018016D1 (fr)
PL (1) PL1705313T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122076B (fi) * 2010-03-12 2011-08-15 Peikko Group Oy Menetelmä tornimaisten rakenteiden perustusten yhteydessä ja tornimaisten rakenteiden perustus
CN103669895B (zh) * 2012-09-24 2016-01-20 五冶集团上海有限公司 旧有钢结构工业厂房边柱变中柱在线快速改造方法
DE102017125060A1 (de) * 2017-10-26 2019-05-02 Wobben Properties Gmbh Ringförmige Konsole zum externen Spannen eines Turmsegments, externes Spannsystem eines Hybridturms, Turmabschnitt eines Hybridturms, Hybridturm, Windenergieanlage und Montageverfahren eines externen Spannsystems für einen Hybridturm
CN111255258A (zh) * 2020-03-25 2020-06-09 广东华坤建设集团有限公司 一种地下室剪力墙裂缝修补用养护装置及其使用方法
CN112392288B (zh) * 2020-12-07 2024-06-04 福州大学 预应力frp与高强钢丝绳组合加固木梁装置及方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271024A (en) * 1968-07-26 1972-04-19 Ellon A G Improvements in and relating to prefabricated buildings
SU931905A1 (ru) * 1979-01-05 1982-05-30 Предприятие П/Я Г-4743 Устройство дл усилени надкрановой части колонны с консол ми
US6851231B2 (en) * 2001-06-27 2005-02-08 Maher K. Tadros Precast post-tensioned segmental pole system

Also Published As

Publication number Publication date
ATE450680T1 (de) 2009-12-15
PL1705313T3 (pl) 2010-05-31
EP1705313A2 (fr) 2006-09-27
EP1705313A3 (fr) 2007-09-26
DE602005018016D1 (de) 2010-01-14

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