EP3034715B1 - Stahlbetonsäule und verfahren zur herstellung davon - Google Patents

Stahlbetonsäule und verfahren zur herstellung davon Download PDF

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Publication number
EP3034715B1
EP3034715B1 EP15003449.4A EP15003449A EP3034715B1 EP 3034715 B1 EP3034715 B1 EP 3034715B1 EP 15003449 A EP15003449 A EP 15003449A EP 3034715 B1 EP3034715 B1 EP 3034715B1
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EP
European Patent Office
Prior art keywords
head portion
column
strand guide
reinforced concrete
formwork
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Application number
EP15003449.4A
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English (en)
French (fr)
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EP3034715A1 (de
Inventor
Sándor Styaszny
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Individual
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Individual
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    • 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

Definitions

  • the invention relates to a reinforced concrete column, particularly for halls with a lightweight reinforced concrete framework, comprising an armature made from reinforcing steel and a column body made from concrete encompassing the armature, as well as to a method for making the column.
  • a hall system that has seen widespread application is the hall system with a so-called lightweight reinforced concrete framework, wherein the reinforced concrete columns are produced in a single session, i.e. the head portion and the column body are produced simultaneously.
  • the patent specification JP2003020754 discloses a pre-tensioned concrete structure suited for constructing multi-story buildings, wherein the structure comprises a concrete column pre-tensioned during manufacturing, with a hole, extending through the whole length of the column and adapted for receiving a post-tensioning element, being disposed in the column body.
  • the core of the tensioning element is formed by a bundle of post-tensioning steel comprising external coating and an anchor head at its ends.
  • the column components made from concrete, are assembled applying an auxiliary cable and a tensioning element, and are joined together by post-tensioning.
  • the document US 1,024,852 discloses a reinforced concrete structure comprising a reinforced concrete column.
  • the head portion of the column comprises ribs supported by corbels, the ribs protruding in four directions and being adapted for receiving beams.
  • the columns are reinforced by metal rods extending into the corbels and the ribs.
  • the document GB 650 093 discloses a reinforced concrete column according to the preamble of claim 1 comprising an armature made from reinforcing steel and a column body made from concrete encompassing the armature, wherein the column consists of a prefabricated head portion and a column body joined to the head portion and the column comprises pre-tensioned strands arranged in the column body to conically converge towards a single point in a strand guide disposed in the head portion .
  • a common characteristic of column head portions having a variable-geometry configuration comprising exclusions is that the main beams are seated on the head portions vertically from above.
  • a limit to reducing the size of concrete members is placed, in addition to structural requirements, by the difficult concrete placement caused by horizontal manufacturing.
  • the objective of the invention is to produce a reinforced concrete column with a head portion that can be pre-fabricated irrespective of the particular construction project, where the load bearing capacity and rigidity of the column body may be increased, and the manufacturing process can be made more economical by shortening production time.
  • the invention is based on the recognitions that by pre-fabricating the head portion of the reinforced concrete column so as to correspond to the beam members of the framework structure the costs of manufacturing can be reduced, and that by introducing the strands of the column body into the head portion it can be provided that the same head portion arrangement can be applied for differently sized columns.
  • a reinforced concrete column applicable particularly for halls with lightweight reinforced concrete framework that comprises an armature made from reinforcing steel and a column body made from concrete encompassing the armature, the column consists of a pre-fabricated head portion comprises reinforcing members which arranged in a shape corresponding to the insertion location and which extend over the upper and bottom portion of the head portion and a column body joined to the head portion which is characterized in that the column body comprises pre-tensioned strands arranged in the columns body to conically converge towards a single point in a strand guide disposed in the head portion.
  • the head portion is made integral with a strand guide disposed inside an armature known per se, by laying concrete in a direction opposite to the direction of installation, and the strand guide of the head portion is made from a pipe extending along the full length of the head portion, the pipe being fitted at its upper portion with a shaped conical element.
  • the conical element of the head portion's strand guide is a conical spiral or a conical pipe
  • the strand guide of the head portion is fitted with an injection stub adapted for receiving an injection pipe
  • the pipe of the head portion's strand guide is a plastic pipe, preferably made from PVC.
  • the reinforced concrete column according to the invention is made in the following steps:
  • Fig. 1 shows different embodiments A-E of the reinforced concrete column 1 according to the invention.
  • the head portions 2 have different configurations depending on the location of the column within the structure.
  • Embodiment A of the column 1 is a corner column, i.e. it is intended to be erected in the corners of the hall.
  • Embodiments B and D of the column 1 are peripheral columns, i.e. they are located at the periphery of the hall between corner columns A, while embodiments C and E are inside columns intended to be erected inside the manufacturing hall, between the columns B and D.
  • the structural arrangement of the head portions 2 is therefore dependent upon the properties and the loads taken by the roof structure supported by them.
  • Figs. 2a-2c the head portions are illustrated in a magnified view - without the column body 6 - clearly showing that in each head portion 2 a respective strand guide 3 is disposed.
  • the configuration and function of the strand guide will be explained later on.
  • reinforcing members 4 adapted for attaching the connecting structural elements are disposed, while at the bottom part thereof there are reinforcing members 5 adapted to be connected to the body of the column 1.
  • the reinforced concrete column according to the invention essentially consists of two parts: a separate pre-fabricated head portion 2, and a column body that is joined to the head portion 2 on a tensioning bed.
  • Fig. 3 An important part of the head portion 2 is the strand guide 3 illustrated in Fig. 3 , which is essentially made from a plastic pipe, preferably a PVC pipe, with one end of the pipe being shaped and being fitted with a conical element implemented either as a conical spiral 7 (see Figs. 4a, 4b ) or as a conical pipe 8 (see Figs. 5a, 5b ).
  • the strand guide 3 illustrated in Fig. 3 comprises a conical spiral 7.
  • the strand guide 3 built into the column head 2 is adapted for taking the loads arising at the direction change location of the strands of the column body that conically converge towards a single point, such that the lowest possible friction force is generated near the strands.
  • This member is adapted for guiding the strands during the tensioning procedure to the region of the head portion 2 which does not constitute a part of the geometrical relation providing the connection of the beam structures supported by the head portion 2 and is not contacted by the structures of the supported beams.
  • the pipe 9 of the strand guide 3 is preferably a PVC pipe with a length of 500-2000 mm and a diameter of 80-200 mm, but it can also be a thin-walled steel pipe.
  • the conical strand guide 3 element is a steel member that is mounted on a strand guide 3 and is adapted for taking the forces arising from the change of direction of the strands of the column body, and provides that the strands are able to slide.
  • the strand guide 3 only guides the strands but is not attached to them.
  • the conical spiral 7 illustrated in Fig. 4 is made from round steel bar hot-wound on the pipe 9 of the strand 3.
  • the portions 10, 11 of the conical element of the strand guide 3 disposed in the head portion 2, extending from the bottom and upper portion of the conical element and connected to the anchors of the known-art reinforcing members of the head portion 2 are adapted for taking the forces arising in the conical spiral and therefore perform an important function for the column 1 according to the invention.
  • Fig. 4a and 4b respectively, show the top plan and side elevation view of a conical spiral 7, where the portions 10 and 11 are adapted for connecting and anchoring the conical spiral 7.
  • a connecting member 10 adapted to be connected to the external part of a smaller (40x40 cm) column anchor is shown, while at the top of Fig. 4 a connecting member 11 arrangement is shown that is adapted to be connected to the external part of a larger (50x50 cm) column anchor.
  • Fig. 5a illustrates the side elevation view of another embodiment of the conical element of the strand guide 3, Fig. 5b showing the top plan view of the conical pipe 8.
  • a respective connecting member 10, 11 is also connected to the bottom and upper periphery of the conical pipe 8, which members are in this case applied only for securing the conical element 8.
  • an injection stub 12 adapted to be connected to an injection pipe 13 is built in the pipe 9 of the strand guide 3.
  • the injection pipe 13 may be disposed at any location of the pipe 9, its location dependent on the arrangement of the head portion 2. It can also be omitted if so desired.
  • an injection stub 12 having a length of 30-50 mm is included.
  • the pipe 9 of the strand guide 3 is cut to the length determined by the given head portion 2.
  • FIG. 6 The manufacturing process of the head portion 2 according to Figs. 2a-2e is illustrated by way of Fig. 6 .
  • the head portion 2 may be manufactured on its side, or in an "upside down” position, i.e. in a position rotated by 180° with respect to the installation position.
  • Fig. 6 illustrates the "upside down” manufacturing process of the head portion 2.
  • the head portion 2 receives the horizontal and vertical forces transmitted from the beams of the hall structure, the head portion 2 transmitting these forces to the column body connected to the head portion 2 of the column 1.
  • the reinforcing members 4 disposed at the upper portion of the head portion 2 perform the same function.
  • the head portions 2 should therefore be produced such that the torque and shear loads at the root of the head are low.
  • the first step (step a) of producing the head portion 2 constitutes making the formwork 14 that may be a steel or wooden formwork.
  • the strand guide 3, and a plug 15 adapted for covering the pipe 9 end are inserted in the formwork 14, and in the next step b) the pre-fabricated armature 16 of the head portion 2, made from reinforcement steel, is placed in the formwork 14.
  • step c) the pipe 9 of the strand guide 3, fitted with a conical spiral 7 and an injection stub 12, is inserted, followed by pulling the injection pipe 13 on the injection stub 12.
  • the injection stub 12 is plugged instead of placing the injection pipe 13 on the stub.
  • the column 1 according to the invention is completed by joining the column body 6 portion to the pre-fabricated head portion 2.
  • Fig. 7 shows the schematic view of embodiment C of the column 1 according to the invention.
  • the strands 17, being terminated in the strand guide 3 of the head portion, are disposed inside the column body 6, extending from the bottom of the column 1 towards the head portion 2 in a conical fashion.
  • the strands 17 are encompassed by the known art armature (not shown) of the column body 6.
  • the head portion 2 of the column 1 is joined together in a tensioning bed 19 known per se.
  • a single tensioning bed 19 can be applied for producing columns that have the same strands layout and the same height of centre of gravity as the column body 6.
  • the columns 1 should be distributed on the tensioning bed 19 such that the distance of a tensioning stand and the end of the first columns is 2-5 m (see Fig. 9 ). This distance can be increased by extending the length of the strands 17.
  • the columns 1 may also be made one by one applying a so-called tensioning frame.
  • Strand guides 18 are disposed on the tensioning bed 19 between the tensioning stands and the column bases.
  • the strand guides 18 are made from steel sheet with dimensions corresponding to the dimensions of the column body 6 of the column 1.
  • strand guide 18 On both sides of the strand guide 18 holes are numbered according to the tensioning order (see Fig. 8 ). In section a of Fig. 8 strand guides 18 of different sizes are shown.
  • section b of Fig. 8 an embodiment of the strand guide 18 is illustrated, showing the tensioning order. This embodiment provides for easier assembly, while in case of the arrangement according to section c lower loads are transmitted to the securing apparatus.
  • Fig. 9 the head portions 2 are arranged facing one another on the tensioning bed 19, the distance between them being 0.5-1 m.
  • the head portions 2 are placed on the tensioning bed 19 according to the tensioning bed layout plan, secured against displacement (i.e. against sliding, torsion, elevation).
  • the forces are taken at the pre-fabricated head portions 2 by overhead support rods arranged above the tensioning bed 19.
  • the suggested distance between the column bases is 0.5-1 m. Distances above 1 m are explicitly not proposed (see the section on tension relief).
  • the strand guides 18 should be arranged between the column bases according to the tensioning bed layout plan. As with the head portions 2, the strand guides should also be secured against displacement (sliding, torsion, elevation).
  • Fig. 8 The suggested strand insertion and tensioning order, which depends on the manufacturing location, is illustrated in Fig. 8 .
  • the essential manufacturing step is wherein the pre-fabricated head portions 2 are joined to the tensioned column body 6.
  • the strands 17 of the column body 6 are hooked in the strand guide 3 inside the head portion 2, and then concrete is laid to produce the column body 6.
  • each strand 17 After installing the conventional pre-fabricated armature of the columns 1 the strands 17 are inserted in the strand guide 3 of the head portion 2 in the order shown in Fig. 8 . The proper insertion (drawing-in) of each strand 17 has to be checked.
  • tensioning is known per se, it has to be noted that in case of the solution according to the invention tensioning is performed after installing and fitting out the armature of the column body 6 of the column 1.
  • tension relief is not required.
  • Each strand 17 should be cut simultaneously at both of its ends (at the tensioning stands), in the order they were tensioned.
  • the strands should be cut simultaneously using cutting torches, in compliance with the relevant technology instructions.
  • the strands should also be cut between the head portions 2 and the column body 6 bases, advancing towards the middle of the tensioning bed. Cutting should be performed simultaneously, in the order the strands were tensioned.
  • the completed column 1 is removed from the bed 19 and stockpiled in a manner known per se.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Prostheses (AREA)

Claims (9)

  1. Stahlbetonsäule, insbesondere für Hallen mit Leichtbaustahlbetongerüst, umfassend einen Anker aus Bewehrungsstahl und einen Säulenkörper aus Beton, der den Anker umgibt, wobei die Säule aus einem vorgefertigten Kopfabschnitts (2) und einem Säulenkörper (6), der mit dem Kopfabschnitt (2) verbunden ist, besteht; und wobei die Säule vorgespannte Stränge (17) aufweist, die in dem Säulenkörper angeordnet sind, um konisch in Richtung zu einem einzigen Punkt zu konvergieren,
    dadurch gekennzeichnet, dass der einzige Punkt sich in einer Strangführung (3) befindet, wobei die Strangführung (3) in dem Kopfabschnitt (2) angeordnet ist.
  2. Stahlbetonsäule nach Anspruch 1, dadurch gekennzeichnet, dass der Kopfabschnitt (2) integral mit einer Strangführung (3) hergestellt ist, die innerhalb eines Ankers (16) angeordnet ist, gegebenenfalls durch Verlegen von Beton in einer zu der Installationsrichtung entgegengesetzten Richtung.
  3. Stahlbetonsäule nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der kopfabschnitt (2) Verstärkungselemente (4, 5) umfasst, die in einer Form entsprechend der Einsatzstelle angeordnet sind und die sich über den oberen und den unteren Abschnitt des Kopfabschnitts (2) verstrecken.
  4. Stahlbetonsäule nach einem der Ansprüche 1-3, dadurch gekennzeiclinet, dass die Strangführung (3) des Kopfabschnitts (2) aus einem Roher (9) hergestellt ist, das sich entlang der vollen Länge des Kopfabschnitts (2) erstreckt, wobei das Rohr (9) an seinem oberen Abschnitt mit einem geformten konischen Element (7, 8) versehen ist.
  5. Stahlbetonsäule nach Anspruch 4, dadurch gekennzeichnet, dass das konische Element der Strangführung (3) des Kopfabschnitts (2) eine konische Spirale (7) ist.
  6. Stahlbetonsäule nach Anspruch 4, dadurch gekennzeichnet, dass das konische Element der Strangführung (3) des Kopfabschnitts (2) ein konisches Rohr (8) ist.
  7. Stahlbetonsäule nach einem der Ansprüche 1-6, dadurch gekenntzeichnet, dass die Strangführung (3) des Kopfabschnitts (2) einen Einspritzstutzen (12) aufweist, der zum Aufnehmen eines Einspritzrohrs (13) angepasst ist.
  8. Stahlbetonsäule nach einem der Ansprüche 1-7, dadurch gekennzeichnet, dass das Rohr (9) der Strangführung (3) des Kopfabschnitts (2) ein Kunststoffrohr ist, das vorzugsweise aus PVC hergestellt ist.
  9. Verfahren zum Herstellen der Stahlbetonsäule nach Anspruch 1, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    - in dem ersten Schritt, Herstellen des Kopfabschnitts (2) durch Platzieren eines Stopfens (15), der die Öffnung der Strangführung (3) auf dem Boden der Schalung bedeckt, Einsetzen des Ankers (16) des Kopfabschnitts (2) und Ziehen der Strangführung (3) auf dem Stopfen (15) und Ziehen des Einspritzrohrs (13) auf dem Einspritzstutzen (12) der Strangführung (3) und dann, nach dem Schließen der Schalung, Gießen von Beton in die Schalung in einer Richtung entgegengesetzt zu der Richtung, in der der Kopfabschnitt (2) gebaut wird (oder in einer horizontalen Richtung), und Abstreifen der Schalung nachdem der Beton ausgehärtet ist;
    - in einem zweiten Schritt, Verbinden des vorgefertigten Kopfabschnitts (2) mit dem Säulenkörper (6) der Säule (1) durch Befestigen des Kopfabschnitts (2) an einem Spannbed, Einsetzen des Ankers des Säulenkörpers (6), Verwenden einer Strangführung (18), die auf dem Bodenabschnitt des Säulenkörpers (6) angeordnet ist, zum Leiten der Stränge (17) des Säulenkörpers (6) auf eine konvergierende Weise in die Strangführung (3) des Kopfabschnitts (2), Spannen der Stränge (17), Schließen der Schalung des Spannungsbeds (19) und Gießen von Beton in die Schalung, Verbinden des (der) Kopfabschnitts(e) mit dem (den) Säulenkorper(n) (6) und, nachdem der Beton ausgehärtet ist, Abstreifen der Schalung.
EP15003449.4A 2014-12-16 2015-12-04 Stahlbetonsäule und verfahren zur herstellung davon Active EP3034715B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU1400595A HUP1400595A2 (hu) 2014-12-16 2014-12-16 Vasbeton oszlop és eljárás annak elõállítására

Publications (2)

Publication Number Publication Date
EP3034715A1 EP3034715A1 (de) 2016-06-22
EP3034715B1 true EP3034715B1 (de) 2017-07-19

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EP15003449.4A Active EP3034715B1 (de) 2014-12-16 2015-12-04 Stahlbetonsäule und verfahren zur herstellung davon

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HU (2) HUP1400595A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10309108B2 (en) * 2014-07-09 2019-06-04 Elastic Potential, S.L. Pillar for supporting a modular structure, beam intended to be supported on pillars of this type, and structure comprising said pillars and beams
CN111456324A (zh) * 2020-04-20 2020-07-28 上海建工二建集团有限公司 阶梯面的先期结构柱、阶梯式交界面结构柱、模板及方法
CN111677275A (zh) * 2020-07-08 2020-09-18 湘潭大学 一种可调节柱模板

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1024852A (en) 1908-11-23 1912-04-30 Arthur G Leonard Reinforced concrete structure.
BE472013A (de) * 1946-03-23
US3861102A (en) 1973-03-12 1975-01-21 John S Hodge Building structure
JP3511020B2 (ja) 2001-07-10 2004-03-29 黒沢建設株式会社 プレストレストコンクリート構造物およびその構築方法
KR101213560B1 (ko) * 2010-09-06 2012-12-18 동서 피, 씨, 씨 주식회사 현장 타설 조립식 건축용 원형 주두 기둥

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* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
HUE034708T2 (hu) 2018-02-28
EP3034715A1 (de) 2016-06-22
HUP1400595A2 (hu) 2016-06-28

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