EP3492665A1 - Pièce préfabriquée de béton dotée d'au moins un composant recevant la charge ainsi que plaque de raccordement destinée à être agencée dans le joint de raccordement entre une telle pièce préfabriquée de béton et le composant recevant la charge - Google Patents

Pièce préfabriquée de béton dotée d'au moins un composant recevant la charge ainsi que plaque de raccordement destinée à être agencée dans le joint de raccordement entre une telle pièce préfabriquée de béton et le composant recevant la charge Download PDF

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Publication number
EP3492665A1
EP3492665A1 EP18209355.9A EP18209355A EP3492665A1 EP 3492665 A1 EP3492665 A1 EP 3492665A1 EP 18209355 A EP18209355 A EP 18209355A EP 3492665 A1 EP3492665 A1 EP 3492665A1
Authority
EP
European Patent Office
Prior art keywords
elevations
component
prefabricated concrete
element according
recesses
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.)
Withdrawn
Application number
EP18209355.9A
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German (de)
English (en)
Inventor
Benjamin Happ
Gerhard Horstmann
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.)
H Bau Technik GmbH
Original Assignee
H Bau Technik GmbH
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 H Bau Technik GmbH filed Critical H Bau Technik GmbH
Publication of EP3492665A1 publication Critical patent/EP3492665A1/fr
Withdrawn legal-status Critical Current

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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
    • E04B1/21—Connections specially adapted therefor
    • E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
    • 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
    • E04B1/38—Connections for building structures in general
    • E04B1/388—Separate connecting elements
    • E04B2001/389—Brackets

Definitions

  • the invention relates to a precast concrete element with at least one load-bearing component according to the preamble of patent claim 1 and a connection plate for arrangement in the connecting joint between such a precast concrete element and the load-bearing component according to the preamble of patent claim 15.
  • Precast concrete parts of the type mentioned represent an important part of the supporting structure in buildings, for example as a prefabricated support, wall element, ceiling element, foundation, pedestal and the like.
  • the components to be connected to these precast concrete components such as consoles, lintels, podiums, ceilings, columns, stairs, etc., are loaded with loads which they receive and enter into the precast concrete element for further load transfer. Due to the load concentration in the transition region from the component to the precast concrete part of the structural design of the connection area is of great importance. A failure of the component connection is equal to a failure of the precast concrete part.
  • the support For a more economical production, it is therefore already gone over to produce the support as a precast concrete, whereby by integration of a connection element in the precast concrete part, a subsequent Anbeton Schlieren the console in cast-in-situ construction is possible.
  • the formwork for the precast concrete element in this procedure consists essentially of continuous flat surfaces on which the connection element is fastened before concreting in the area of the later console. After stripping the connection reinforcement of the connection element is placed in the intended position and then the console switched and concreted. By reducing the scarfing effort in the area of the support, a first improvement in terms of economic efficiency is achieved, but the expense associated with retrofitting the console is still considerable.
  • the object of the invention is to further develop the connection of a load-bearing component to a precast concrete part so that it meets both static and economic requirements.
  • connection means are provided in the connection joint, which guarantee a safe and defined flow of force.
  • the connection means additionally comprise transversal force-transmitting elevations and depressions which, due to their complementary shape, bring about positive interlocking in the area of the connection joint.
  • the invention includes all possible combinations of the arrangement of recesses or elevations in the precast concrete part and / or in at least one component. However, it is particularly preferred to provide the recesses in the precast concrete part or when using a connection plate in the precast concrete part and in the at least one component. In this way, the forces to be transmitted in the surface remote areas of the precast concrete or the transmitted at least one component, ie deep inside, where due to three-dimensional stress states forces can be removed better and safer.
  • An embodiment of the invention proves to be particularly advantageous in which the areas forming the elevations and the areas forming the depressions have different strengths, wherein in particular the elevations have a greater strength than the depressions.
  • higher strength regions may have a compressive strength of at least 50 N / mm 2 , preferably at least 100 N / mm 2 , most preferably at least 150 N / mm 2 .
  • exceeding the allowable loads will result in deformation of the lower strength portions.
  • a failure of the connection area announces itself in this embodiment of the invention by perceptible changes in shape, so that timely countermeasures can be taken.
  • Such embodiments are particularly suitable in combination with an arrangement of the recesses in the precast concrete part and / or in the at least one component as described above, since with minimal overhead in the area of the surveys, the load transfer capacity of the adjacent construction can be increased overall.
  • connection means comprise a connection plate or steel plate whose front and back are formed complementary to the elevations and / or depressions.
  • the connection plate or steel plate is arranged in the connection joint between the prefabricated concrete element and the at least one component in a form-fitting manner, thereby transferring the forces from the component into the precast concrete element.
  • the terminal plate or steel plate can be used in this embodiment as a permanent formwork, which simplifies the production of precast concrete and / or component.
  • connection plate may consist of a concrete casting which is filled into the intermediate space between the precast concrete part and at least one component.
  • precast concrete element and component are arranged at a clear distance from each other with a lateral formwork and floor formwork in the connection area.
  • connection plate as a prefabricated part.
  • the connection plate may have a higher strength than the precast concrete part and / or the component.
  • the connection plate made of high-strength or ultra-high-strength concrete, which may also be optionally reinforced with fibers, resulting in the described advantages. Since in this embodiment, the elevations are arranged exclusively in the terminal plate, the cost of cladding is reduced not only in the precast concrete part, but also in the component to be connected.
  • depressions and elevations are in particular cylindrical, conical, frustoconical, strip-shaped, convex or concave shapes into consideration.
  • Conical, frusto-conical, convex and concave depressions and elevations have, inter alia, the advantage of self-centering during assembly of the component on the precast concrete part.
  • the recesses and elevations in the plane of the connecting joint have a dimension of 20 mm to 30 mm, preferably 25 mm and / or transverse to the plane of the connecting joint has a depth of 5 mm to 15 mm, preferably 10 mm. It has been found that a secure and durable power transmission is ensured with such a geometry of the depressions and elevations.
  • the depressions and elevations are arranged at least in the pressure zone of the connection region.
  • the resultant of the depressions and elevations to be transmitted force in the pressure zone due to the horizontal forces acting there has a lower inclination relative to the horizontal, so that the resulting force is directed into the interior of the precast concrete part and is removed there into the ground.
  • a preferred embodiment of the invention provides to push the tensile reinforcement in the connection joint and / or to guide the tensile reinforcement with play within a tubular enclosure by the component to be connected.
  • Prefabricated concrete parts and components can thus be manufactured independently of each other with little effort and assembled at a later date on the construction site.
  • the exemplary embodiments relate - without being limited thereto - to a precast concrete element in the form of a prefabricated support, to which a console is connected as a load-absorbing component.
  • precast concrete elements which are formed by a wall plate, a pedestal, a foundation, a ceiling, etc., to which a fall, a ceiling, a staircase, a pillar or the like as a load-bearing component connects.
  • FIG.1 an inventive precast concrete part 1 is shown in the form of a support which is firmly anchored with its lower end in the ground, for example in a quiver foundation, not shown.
  • a prefabricated also concrete console 2 is fixed, which is intended for storage of other components such as cross member, side members and the like.
  • a precast concrete part 1 may optionally have a plurality of consoles 2 on one or more sides and at different heights.
  • the console 2 receives the coming from the other components, embodied by the arrow 3 loads and directs them into the precast concrete part 1 a.
  • the type of connection of the console 2 must be such that a secure power flow over the connection joint 4 between the precast concrete part 1 and 2 console away is guaranteed.
  • Fig. 2 shows the console 2 in a transparent representation, so that the essential elements for power transmission are visible.
  • four tension rods 5 are visible, which are guided up to the connection joint 4 in sheaths 6 and whose free ends are anchored in niches on the console end face 7.
  • the niches are closed with a plug or a hardening filling material.
  • the opposite ends of the tension rods 5 are frictionally coupled with a present in the precast concrete part 1 tensile reinforcement, which will be discussed later (see. Fig. 6, 7 . 10, 11 ).
  • the pressure area of the connecting joint 4 is complementarily shaped by a variety Recesses 8 and elevations 9 formed, the form-fitting interlock and transmit in their interaction transverse forces, which is described in more detail below.
  • Fig. 3 gives the closer embodiment of the concrete finished part side of the connection portion 17 again.
  • This area is already produced when concreting the precast concrete part 1 by a steel sheet 10, as for example in Fig. 4 is shown, is fixed in a predetermined position on the inside of the formwork in the manner of a built-in part.
  • the steel sheet 10 has a rectangular shape with a front 11 and back 12.
  • the thickness of the steel sheet 10 is, for example, about 2 mm to 5 mm.
  • the tensile zone of the connection joint 4 associated area circular openings 13 for the passage of the tension rods 5 are provided.
  • the lower region of the steel sheet 10 assigned to the pressure zone has a multiplicity of deformations extending transversely to the plane of the steel sheet 10, for example by deep drawing or hydroforming and forming elevations 9 'on the front side 11 and depressions 8' on the rear side.
  • the recesses 8 'and elevations 9' are arranged with lateral spacing in horizontal rows, wherein the recesses 8 'and elevations 9' of two superimposed rows have a lateral offset from each other, which preferably corresponds to half the lateral distance.
  • Each elevation 9 'or recess 8' has in the plane of the steel sheet 10 an octagonal cross-section which becomes smaller with increasing distance from the steel sheet plane and finally ends in a hexagonal end face. This results in a section perpendicular to the steel plate plane a frustoconical design of the elevations 9 'and depressions 8'.
  • the dimension of the recesses 8 'and elevations 9' in the plane of the steel sheet 10 is between 20 mm and 30 mm and the depth perpendicular thereto between 5 mm and 15 mm. Deviating formations with round, rectangular, square or hexagonal cross-sections are also within the scope of the invention.
  • the precast concrete 1 In the course of concreting the precast concrete 1 leave the elevations 9 'of the steel sheet 10 complementary shaped recesses 8 in the connection area 17 of the precast concrete 1, which form the component surface there after stripping the precast concrete part 1 and removing the steel sheet 10.
  • the steel sheet 10 analogous to a lost formwork in the precast concrete part 1.
  • the depressions 8 'on the rear side 12 of the steel sheet 10 correspond to the depressions 8 according to the invention (cf. Fig. 7 ).
  • the coupling anchor rods 15 and recesses 8 embody the connecting means 17 in the connection area 17 of the precast concrete part 1 according to the invention.
  • Fig. 5 the console 2 is shown with the console-side connection means on the inner end face 16.
  • the dimensions of the end face 16 correspond to those of the connection portion 17 of the precast concrete part 1.
  • the upper part of the end face 16 which in turn corresponds to the tension zone, you can see the ends of the ducts 6, whose arrangement is chosen so that they the anchor rods 15 of the precast concrete part. 1 in alignment.
  • the area of the pressure zone one sees a large number of elevations 9 which correspond in shape and size as well as relative position to the depressions 8 in the connection area 17 of the precast concrete part 1.
  • the preparation of the console-side connection area, which extends over the end face 16 of the console 2, is similar to the connection portion 17 of the precast concrete part 1, in turn, a steel sheet 10 ', comparable to that of Fig. 4 known, is inserted before concreting the console 2 in the formwork.
  • the Hüllrohe 6 are preassembled in the region of the openings 13 on the steel sheet 10 '.
  • the steel sheet 10 ' can be removed in the course of Ausschalens of the console 2, so that the console 2, the in Fig. 5 has shown shape.
  • the steel sheet 10 'can remain on the bracket 2 and interact with the transverse force transmission with its elevations 9' directly with the recesses 8 or 8 'of the precast concrete part 1.
  • FIG. 6 shows the embodiment in which prior to mounting the console 2, the steel sheet 10 from the precast concrete part 1 and the steel sheet 10 'have been removed from the console 2.
  • the elevations formed by the concrete of the console 2 9 are directly and without intermediate position in the recesses 8 of the precast concrete part 1.
  • the positive connection between the elevations. 9 and recesses 8 causes an intimate toothing, in the contact surfaces, the transverse forces between the precast concrete part 1 and 2 console are transmitted.
  • the concrete of the console 2 at least in the region of the elevations 9 and in the edge zone of the end face 16 has a higher strength than that of the precast concrete part 1.
  • the entire console 2 may consist of a concrete higher strength.
  • the connecting joint 4 occurring tensile forces transmitted by a connecting joint 4 crossing tensile reinforcement.
  • the tensile reinforcement is formed by anchor rods 15 anchored in the in-situ concrete of the precast concrete part 1, to the ends of which a screw sleeve 14 is respectively screwed on to the connecting joint 4.
  • the console-side tension reinforcement consists of tension rods 5, which are guided displaceably within casing 2 and rotatable in the console 2.
  • the ends of the connecting joint 4 facing up to the threaded sleeves 14, in which they are screwed to form a Muffenschreibes.
  • the opposite ends are in niches on the front side 7 of the console 2.
  • Fig. 7 differs from the above only by the arrangement of the steel sheet 10 and / or the steel sheet 10 'in the connection joint 4, which have been left after concreting on the precast concrete part 1 and on the console 2. Sheet steel 10 and / or steel sheet 10 'form in this embodiment, an intermediate layer between precast concrete 1 and console 2. Otherwise, the under Fig. 6 made statements accordingly.
  • connection plate 18 is arranged in the connecting joint 4 between the precast concrete part 1 and 2 console for lateral force transmission.
  • the specific design of the connection plate 18 is from a synopsis of Fig. 9a, 9b . 10 and 11 out.
  • Fig. 9a and 9b show the front 19 and rear 20 of the connection plate 18 are identical and have arranged in the lower half in horizontal rows elevations 9, the elevations 9 of two superimposed rows are arranged with lateral offset from each other.
  • the surveys 9 correspond in shape, size and relative arrangement under the Fig. 1 to 7 described so that reference is made to avoid repetition of the statements there.
  • In the upper half has the connection plate 18 openings 21, which serve as in the steel sheets 10, 10 'of the implementation of the tensile reinforcement on the connecting joint 4 away.
  • the connecting plate 4 has a thickness of 10 mm to 25 mm in the region without elevations 9 and consists of a concrete with increased compressive strength, for example with a compressive strength above 100 N / mm 2 , preferably above 150 N / mm 2 and may optionally have a fiber reinforcement ,
  • a connection plate 18 for example, two steel sheets 10 and 10 'may be used, the mutually facing rear sides 12 are held plane-parallel and at a distance from each other within a sealing frame. The formwork formed in this way results in a negative mold, which is filled to produce the connection plate 18 with concrete.
  • connection plate 18 is intended for arrangement in the connecting joint 4, wherein the front and rear elevations 9 positively engage both in corresponding recesses 8, 8 'of the precast concrete part 1 and wells 8 of the console 2 for producing a transverse force-transmitting toothing.
  • the precast concrete 1 is this in the connection area 17 as already under the Fig. 1 to 4 formed, wherein the steel sheet 10 may be removed from the precast concrete part 1, resulting in a connection according to Fig. 10 leads.
  • connection plate 18 can be used in the manner of a lost formwork for shuttering the console 2 to simplify the console production, the concrete of the console 2 with the connection plate 18 enters a two-dimensional composite and the connection plate 18 thereby Becomes part of the console 2.
  • a console 2 with integrated connection plate 18 is the subject of Fig. 8
  • one of the elevations 9 of the terminal plate 4 complementary shaped end face 16 of the console 2 can be prepared analogously to the formation of the connection portion 17 of the precast concrete part 1, ie by using a steel sheet 10, 10 '.
  • the connection plate 18 is without bonding with the console 2 and the precast concrete part 1 in the connection joint 4th

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Bridges Or Land Bridges (AREA)
EP18209355.9A 2017-11-29 2018-11-29 Pièce préfabriquée de béton dotée d'au moins un composant recevant la charge ainsi que plaque de raccordement destinée à être agencée dans le joint de raccordement entre une telle pièce préfabriquée de béton et le composant recevant la charge Withdrawn EP3492665A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202017107261.4U DE202017107261U1 (de) 2017-11-29 2017-11-29 Betonfertigteil mit mindestens einem eine Last aufnehmenden Bauteil

Publications (1)

Publication Number Publication Date
EP3492665A1 true EP3492665A1 (fr) 2019-06-05

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EP18209355.9A Withdrawn EP3492665A1 (fr) 2017-11-29 2018-11-29 Pièce préfabriquée de béton dotée d'au moins un composant recevant la charge ainsi que plaque de raccordement destinée à être agencée dans le joint de raccordement entre une telle pièce préfabriquée de béton et le composant recevant la charge

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EP (1) EP3492665A1 (fr)
DE (1) DE202017107261U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI674345B (zh) * 2018-01-23 2019-10-11 潤弘精密工程事業股份有限公司 梁柱接頭結構及其施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466576A1 (fr) * 1979-10-03 1981-04-10 Saret Ossature de batiment a poutres et poteaux en beton arme
DE102004041289A1 (de) * 2004-08-25 2006-03-09 Brandenburgische Technische Universität Cottbus Anordnung zur mechanischen Verbindung von lasttragenden Strukturen
EP1752591A2 (fr) * 2005-08-11 2007-02-14 Edilmatic S.R.L. Dispositif de liaison et procède avec ce dispositif pour relier une poutre préfabriquée en béton armé avec une colonne préfabriquée en béton armé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466576A1 (fr) * 1979-10-03 1981-04-10 Saret Ossature de batiment a poutres et poteaux en beton arme
DE102004041289A1 (de) * 2004-08-25 2006-03-09 Brandenburgische Technische Universität Cottbus Anordnung zur mechanischen Verbindung von lasttragenden Strukturen
EP1752591A2 (fr) * 2005-08-11 2007-02-14 Edilmatic S.R.L. Dispositif de liaison et procède avec ce dispositif pour relier une poutre préfabriquée en béton armé avec une colonne préfabriquée en béton armé

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