EP1749946B1 - Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements - Google Patents

Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements Download PDF

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Publication number
EP1749946B1
EP1749946B1 EP05017043A EP05017043A EP1749946B1 EP 1749946 B1 EP1749946 B1 EP 1749946B1 EP 05017043 A EP05017043 A EP 05017043A EP 05017043 A EP05017043 A EP 05017043A EP 1749946 B1 EP1749946 B1 EP 1749946B1
Authority
EP
European Patent Office
Prior art keywords
bracket
pillar
tension member
tension
connection
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.)
Not-in-force
Application number
EP05017043A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1749946A1 (en
Inventor
Sergio Zambelli
Benito Zambelli
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES05017043T priority Critical patent/ES2384443T3/es
Priority to AT05017043T priority patent/ATE535654T1/de
Priority to EP05017043A priority patent/EP1749946B1/en
Publication of EP1749946A1 publication Critical patent/EP1749946A1/en
Application granted granted Critical
Publication of EP1749946B1 publication Critical patent/EP1749946B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • E04B1/215—Connections specially adapted therefor comprising metallic plates or parts

Definitions

  • the present invention relates to a device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements.
  • brackets which are formed monolithically with the pillar or are applied, for example by means of bolts, to the body of the pillar.
  • These brackets can be made of reinforced concrete or steel and can be external to the dimensions of the beam or, as in the case of the so-called Gerber cantilever, can be accommodated in an appropriately provided seat formed on the lower side of the beam at the end of such beam that is designed to face the pillar.
  • the seat formed in the body of the beam reduces the resisting cross-section of the beam at the seat, very often forcing an oversizing of the entire beam in order to achieve the required strength.
  • bracket is formed monolithically with the pillar or is preassembled to the body of the pillar, storage and transport problems occur as a consequence of the additional space occupation of the bracket laterally with respect to the pillar.
  • EP-A-1 092 814 discloses a device for connecting prefabricated beams to pillars.
  • a box-like body defining a cavity is embedded in the concrete casting of the pillar during its production, and such cavity accommodates a bracket which has an end that protrudes from the side of the pillar and that forms a support for the end region of the beam,
  • the end of the beam is provided by means of a shaped steel plate firmly anchored to the concrete casting of the beam and defining a recess on the lower side of the end of the beam in which the braket engages. Screws extending upwardly from the recess through bushes welded to the shaped steel plate are used to bolt the end of the beam to the bracket where it supports the end of the beam.
  • a steel tubular body, embedded in the beam has an open end at an upper face of the beam and another end embedded in the beam at an intermediate region thereof.
  • a tie is arranged in the tubular body and is connected at one end proximate to the lower end of the beam in the intermediate region thereof. The tie extends out of the open end of the tubular body and has another end connected inside another tubular body embedded in the beam at a region above the box-like body thereof accommodating the bracket. Bars are also provided embedded in the beam and the pillar, and welded respectively between: the beam tubular body and the recess shaped steel plate; and the pillar tubular body and the box-like body.
  • the aim of the present invention is to solve the problems described above by providing a device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements, which allows to provide a bracket which, for an equal resistance to loads, can have a considerably reduced height with respect to conventional types of brackets.
  • an object of the invention is to provide a device that allows to reduce the vertical dimensions of the seat of the beam optionally designed to accommodate the bracket and accordingly limit the vertical oversizing of the beam.
  • Another object of the invention is to provide a device that does not require preassembly of the bracket to the pillar, thus simplifying pillar transport operations.
  • Another object of the invention is to provide a device that allows to recover any errors in the coupling between the beam and the pillar.
  • Another object of the invention is to provide a device that is simple and quick to install.
  • the device according to the invention comprises a bracket 2, which forms by means of its upper face, once installed, a support for a beam 3.
  • the device further comprises first connection means 4 for connecting to a pillar 5 the end of the bracket 2 that is designed to be directed toward the pillar 5 and second connection means 6 for connecting a region of the bracket 2 which is spaced from said end to a region of the pillar 5 which is arranged above the bracket 2 and on the side of the pillar 5 that lies opposite with respect to the side that bears the bracket 2.
  • the second connection means 6 comprise at least one tension member 7a, 7b, which is connected, by means of its lower end, to the bracket 2 and, by means of its upper end, to a region of the pillar 5 that is arranged above the bracket 2.
  • the tension member 7a, 7b is preferably a tension member of the rigid type, constituted for example by a steel bar.
  • the lower end of the tension member 7a, 7b is pivoted to the bracket 2 about a substantially horizontal first pivoting axis 8, which, once the bracket is installed, is parallel to the face of the pillar 5 that is directed toward the bracket 2.
  • the lower end of the tension member 7a, 7b can have conveniently a teardrop shape, and pivoting to the bracket 2 is preferably performed below the supporting surface for the beam 3 and below the upper face of the bracket 2 by providing in said bracket appropriate passages 9a, 9b for the tension member 7a, 7b. Pivoting between the tension member 7a, 7b and the bracket 2 is provided by means of a first connection with a pivot 10, the axis whereof determines the pivoting axis 8, which passes through the end of the tension member 7a, 7b and mates in seats 11a, 11b provided appropriately in the body of the bracket 2.
  • the bracket 2 has stiffening ribs 12, preferably on its lower face, and the seats 11a, 11b can be formed in said stiffening ribs 12.
  • the second connection of the upper end of the tension member 7a, 7b to the pillar 5 also is preferably constituted by a connection of the type provided with a hinge in which the second pivoting axis 13 is substantially horizontal, when the bracket 2 is installed, and parallel to the face of the pillar 5 that is directed toward the bracket 2.
  • the tension member 7a, 7b passes through a through passage 14a, 14b, which is formed in the pillar 5 and is connected to the side of the pillar 5 that lies opposite with respect to the side provided with the bracket 2.
  • the passage 14a, 14b is formed by a tubular body 15a, 15b, which is incorporated beforehand in the body of the pillar 5 during its manufacture.
  • tension means for tensioning the tension member 7a, 7b are provided.
  • the tension member 7a, 7b in fact has at least one portion thereof 16a, 16b, starting from its end that lies opposite with respect to the bracket 2, which is threaded and mates with a nut 17a, 17b, that form the tension means which once installed rests against a plate 18, which in turn rests against the side of the pillar 5 that lies opposite the side provided with the bracket 2.
  • the threading of the tension members 7a, 7b can be performed by chip-forming machining or by rolling or can be constituted by helical ribs that are already present on the lateral surface of the tension members, for example by using as tension members reinforcement bars which already have helical ribs for increasing grip on the concrete, which can be used as threads.
  • the plate 18 is accommodated in a recess 30 which is provided for this purpose in the body of the pillar 5.
  • the nut 17a, 17b in addition to the portion that is directed away from the plate 18 and is contoured so as to be handled with conventional fastening tools, for example of the hexagonal prism-like type, is provided with a portion 19 shaped like a spherical dome, which mates with a corresponding spherical dome-shaped seat 20 formed within the plate 18.
  • the mating between the nut 17a, 17b and said spherical dome-shaped seat 20 allows the tension member 7a, 7b to perform small rotations and provides said hinged connection between the upper end of the tension member 7a, 7b and the plate 18 or pillar 5.
  • the second connection means comprise two tension members 7a, 7b, which are arranged side by side and parallel to each other and are pivoted by means of their lower end to the bracket 2, preferably about a same pivoting axis 8, and, by means of their upper end, to the pillar 5, preferably about a same pivoting axis 13, which is formed by the coupling between the spherical dome-shaped portions 19 of the nuts 17a, 17b and the spherical dome-shaped seats 20.
  • the first connecting means can provide a connection of the interlocking type, for example by bolting the bracket 2 to the pillar 5.
  • the first connection means 4 also provide an additional connection between the bracket 2 and the pillar 5 with an additional pivoting axis 21 which is substantially horizontal and likewise parallel to the face of the pillar 5 that is directed toward the bracket 2.
  • Said first connection means 4 preferably comprise a protrusion 22 of the bracket 2, which protrudes toward the pillar 5 and engages a seat 23 formed in an insert 24, which is preferably incorporated in the body of the pillar 5.
  • the protrusion 22 and the seat 23 are contoured so as to provide a hinge-like connection, i.e., so that the protrusion 22 and therefore the bracket 2 can rotate with respect to the insert 24, i.e., with respect to the pillar 5, about the pivoting axis 21.
  • the protrusion 22 has retention teeth 25a, 25b, which can engage in abutments 26a, 26b provided on the insert 24 in order to limit the rotation, during installation, of the bracket 2 with respect to the pillar 5 about the pivoting axis 21.
  • a layer 27 made of elastically deformable material, for example neoprene, rubber or similar material, so as to achieve a uniform and coplanar distribution of the forces exchanged between the beam 3 and the bracket 2.
  • the end region of the beam 3 that rests against the bracket 2 can be recessed so as to eliminate the space occupation of the bracket 2 below the beam 3.
  • the beam 3 has hollows 28 for the passage of the tension members 7a, 7b.
  • the pillar 5 can bear brackets 2 on two opposite sides thereof.
  • the tension members 7a, 7b that support the two brackets 2 are conveniently offset and crossed within the pillar 5, as shown in Figure 3 .
  • the device according to the invention thanks to the fact that the bracket 2 is supported in an intermediate region by at least one tension member which connects it to a region of the pillar 5 that lies above said bracket 2, is capable of withstanding intense loads despite a height of the bracket 2 that is considerably reduced with respect to the height of brackets used in traditional types of pillar-beam connections.
  • This fact allows to minimize the space occupation of the bracket 2 below the beam 3.
  • the bracket 2, as in the illustrated embodiment is accommodated in a recess 29 provided in the lower face of the beam 3, thanks to the reduced height of the bracket 2 the oversizing of the beam can be reduced or may even be unnecessary.
  • the device according to the invention allows to have no lateral protrusions on the pillar before its installation, thereby facilitating its transport.
  • Another advantage of the device according to the invention is that it allows, by tightening the nuts 17a, 17b, to adjust the position of the bracket 2 with respect to the pillar 5, allowing to correct any positioning errors between the beam 3 and the pillar 5.
  • the device according to the invention fully achieves the intended aim, since for an equal resistance to loads it allows to reduce considerably the height of the bracket with respect to the height required for brackets in known types of beam-pillar connections.
  • the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP05017043A 2005-08-05 2005-08-05 Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements Not-in-force EP1749946B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES05017043T ES2384443T3 (es) 2005-08-05 2005-08-05 Dispositivo para conectar vigas y pilares o elementos estructurales similares, particularmente para elementos estructurales prefabricados de hormigón
AT05017043T ATE535654T1 (de) 2005-08-05 2005-08-05 Vorrichtung zur verbindung von trägern und pfeilern oder ähnlichen bauelementen, insbesondere vorgefertigten bauelementen aus beton
EP05017043A EP1749946B1 (en) 2005-08-05 2005-08-05 Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05017043A EP1749946B1 (en) 2005-08-05 2005-08-05 Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements

Publications (2)

Publication Number Publication Date
EP1749946A1 EP1749946A1 (en) 2007-02-07
EP1749946B1 true EP1749946B1 (en) 2011-11-30

Family

ID=35432414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05017043A Not-in-force EP1749946B1 (en) 2005-08-05 2005-08-05 Device for connecting beams and pillars or similar structural elements, particularly for prefabricated concrete structural elements

Country Status (3)

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EP (1) EP1749946B1 (es)
AT (1) ATE535654T1 (es)
ES (1) ES2384443T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20110332A1 (it) * 2011-06-23 2012-12-24 Vittorio Capozzi Struttura e procedimento di montaggio della stessa.
ITPD20120222A1 (it) * 2012-07-12 2014-01-13 Fip Ind Struttura prefabbricata e procedimento di montaggio
CN107905369B (zh) * 2017-12-25 2024-02-23 合肥工业大学 装配式框架梁柱连接节点

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI72369C (fi) * 1985-08-12 1987-05-11 Partek Ab Byggnadssystem.
GR1001450B (el) * 1992-12-24 1993-12-30 Ioannis Logiadis Αντισεισμικός σύνδεσμος δεσμευμένης ταλάντωσης για μία ασφαλή σεισμική μόνωση των κατασκευών.
IT1313918B1 (it) 1999-10-12 2002-09-26 Sergio Zambelli Dispositivo per il collegamento di una trave a pilastri, o elementistrutturali portanti simili, per la realizzazione di edifici,

Also Published As

Publication number Publication date
EP1749946A1 (en) 2007-02-07
ES2384443T3 (es) 2012-07-05
ATE535654T1 (de) 2011-12-15

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