DE959627C - Circuit for the production of partial beams made of reinforced or prestressed concrete - Google Patents

Circuit for the production of partial beams made of reinforced or prestressed concrete

Info

Publication number
DE959627C
DE959627C DEG14910A DEG0014910A DE959627C DE 959627 C DE959627 C DE 959627C DE G14910 A DEG14910 A DE G14910A DE G0014910 A DEG0014910 A DE G0014910A DE 959627 C DE959627 C DE 959627C
Authority
DE
Germany
Prior art keywords
production
concrete
partial
partial beam
reinforced
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.)
Expired
Application number
DEG14910A
Other languages
German (de)
Inventor
Dipl-Ing Dipl-Ing Max Gessner
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.)
MAX GESSNER DIPL ING DIPL ING
Original Assignee
MAX GESSNER DIPL ING DIPL ING
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 DEG10393A external-priority patent/DE938329C/en
Application filed by MAX GESSNER DIPL ING DIPL ING filed Critical MAX GESSNER DIPL ING DIPL ING
Priority to DEG14910A priority Critical patent/DE959627C/en
Application granted granted Critical
Publication of DE959627C publication Critical patent/DE959627C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/06Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ
    • E04B5/23Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

Bs ist bekannt, innerhalb der Schalungswand einer Spannbahn zur Herstellung von Teilbalken aus Stahl- oder Spannbeton Schubbügel, die dem Verbund des Teilbalkens mit dem Ortbeton dienen, so anzuordnen, daß sie die Bewehrungselemente ganz oder teilweise umfassen und ihre freien Enden sich in, Richtung autf die Spannbahn erstrecken.Bs is known within the formwork wall a tensioning track for the production of partial beams made of reinforced or prestressed concrete push handle, which the The composite of the partial beam with the in-situ concrete is used to arrange the reinforcement elements include wholly or partially and their free ends extend in the direction of autf the tensioning path.

Mit Schubbügeln versehene, T-förmige Betonbalken wurden bisher beispielsweise dadurch gefertigt, daß man die die Bewehrungseinlagen umfassenden Schubbügel in der Schalung so anordnete, daß ihre Enden nach oben herausragten. Gegen eine solche Fertigung bestehen keine Bedenken, wenn der Beton durch Rütteln der seitlichen Schalung verdichtet wird. Die Verdichtung des Betons ist in diesem Fall jedoch für Spannbeton nicht ausreichend. Um den Beton besser verdichten zu können, hat man die gesamte Schalung, also auch den ganzen Schalungsboden, in Rüttel-' Schwingungen versetzt und die Schubbügel erst kurz' nach dem Verdichten des Betons in diesen eingedrückt. Eine kraftschlüssige Verbindung der Schubbügel mit den Bewehrungselementen ist dann nicht möglich.T-shaped concrete beams with push bars have previously been manufactured, for example, by that one arranged the push bar encompassing the reinforcement inserts in the formwork in such a way that that their ends protruded upwards. There are no concerns about such a production, when the concrete is compacted by shaking the formwork on the side. The compression However, in this case the concrete is not sufficient for prestressed concrete. To better compact the concrete to be able to, you have the entire formwork, including the entire formwork base, in vibrating ' Vibration offset and the push handle only shortly after the concrete has been compacted in it depressed. A non-positive connection of the push handle with the reinforcement elements is then not possible.

Um diesen Nachteil zu vermeiden, hat man den Betonbalken in zwei Stufen gefertigt, und zwar erst die eine Hälfte des Balkens hergestellt, dann die Bewehrungselemente mit den Scbubbügeln ein-In order to avoid this disadvantage, the concrete beam was made in two stages first half of the beam is made, then the reinforcement elements with the Scbubbie

gelegt und darauf die zweite Hälfte aufbetoniert. Die Schubbügel, wurden dabei zwischen einer zweiteiligen Schalungswand so festgeklemmt, daß sich ihre freien Enden in einer horizontalen Ebene erstreckten. Diese Fertigung von Teilbalken ist unwirtschaftlich, ganz davon abgesehen, daß man sie bei Spannbeton nicht anwenden kann.laid and the second half concreted on top. The push handle was made between a two-part Formwork wall clamped so that their free ends extended in a horizontal plane. This production of partial beams is uneconomical, quite apart from the fact that they cannot be used with prestressed concrete.

Man hat Teilbalken auch schon so gefertigt, daß der Beton in eine muldenförmige Schalung eingebracht wurde und die die Bewehrungselemente umfassenden. Schubbügel so gestaltet waren, daß ihre freien Enden in der horizontal liegenden Bodenplatte vorgesehene öffnungen, durchdrangen. Diese Art der Fertigung hatte Nachteile: Die Durchführungsstellen mußten abgedichtet werden, beispielsweise durch Gummiringe, Papier od. dgl.; die Schubbügel konnten erst nach Erhärten des Teilbalkens an ihren Enden abgebogen werden; außerdem verklemmen sich die Bügel in den ao öffnungen des Schalungsbodens, da sich die Länge des Teilbalkens beim Entspannen verringert, wodurch die Gefahr des Aufreißens des Teilbalkens besteht.Partial beams have already been manufactured in such a way that the concrete is placed in a trough-shaped formwork and which include the reinforcement elements. Push handle were designed so that their free ends penetrate openings provided in the horizontally lying base plate. This type of production had disadvantages: the feed-through points had to be sealed, for example by rubber rings, paper or the like; the push handle could only be used after the Partial beams are bent at their ends; in addition, the brackets get stuck in the ao openings of the shuttering base, since the length of the partial beam is reduced when relaxing, which there is a risk of the partial beam tearing open.

Diese Nachteile werden vermieden, wenn man die Teilbalken aus Stahl- oder Spannbeton nach dem Hauptpatent 938 329 fertigt. Das Kennzeichen des Hauptpatents besteht darin, daß die Schubbügel von dem Beton des Teilbalkens ganz oder teilweise umhüllt sind, und zwar derart, daß die Bügel vor der Verbindung mit dem Ortbeton leicht freigelegt und gegebenenfalls aufgebogen werden können. Der Teilbalken weist an der dem später einzubringenden Ortbeton zugewandten Seite eine oder mehrere Rippen auf, und die Schubbügelteile fassen in diese Rippe ein.These disadvantages are avoided if the partial beams are made of reinforced or prestressed concrete the main patent 938 329 manufactures. The distinguishing feature of the main patent is that the push handle are completely or partially encased by the concrete of the partial beam, in such a way that the Brackets are slightly exposed before the connection with the in-situ concrete and, if necessary, bent up can. The partial beam has a side facing the in-situ concrete to be poured later or more ribs, and the push handle parts engage in this rib.

Mit Rücksicht auf die Erhöhung der Tragfähigkeit von Bewehrungselementen bei der Montage ist es zweckmäßig, die Rippen, in denen die die Schubkräfte übertragenden Mittel untergebracht sind, verhältnismäßig breit bzw. höher auszuführen, als dies bisher der Fall war. Dies führt dazu, daß die ganz oder teilweise in dem Beton eingebetteten Schubübertragungsmittel auf der Baustelle schwieriger losgelöst und hochgebogen werden können. Der Erfindung liegt die Aufgabe zugrunde, diesen Nachteil auszuschalten.With a view to increasing the load-bearing capacity of reinforcement elements during assembly it is advisable to remove the ribs in which the means that transmit the thrust forces are accommodated, relatively wide or higher than was previously the case. This leads to the fact that the Wholly or partially embedded in the concrete thrust transmission means on the construction site more difficult can be detached and bent up. The invention is based on the object to eliminate this disadvantage.

Erfindungsgemäß wird vorgeschlagen, die Spannbahn an der Stelle, an der .die Schubbügel aus dem zu fertigenden Teilbalken herausragen, tiefer als es der Querschnittsform des Teilbalkens an dieser Stelle entspricht, zu gestalten und diesen Raum mit Sand od. dgl. auszufüllen und die aus dem Teilbalken herausragenden Schubbügel teile in den Sand od. dgl. einfassen zu lassen.According to the invention it is proposed that the tensioning track at the point where .the push handle from the partial beam to be produced protrude deeper than the cross-sectional shape of the partial beam on this Place corresponds to design and fill this space with sand or the like and from the Part of the bar protruding push handle parts in the sand or the like.

Der Erfindungsgedanke wird an Hand der Zeichnungen schematisch, veranschaulicht. Es zeigtThe concept of the invention is illustrated schematically with the aid of the drawings. It shows

Fig. ι einen Schnitt durch einen mit einer Rippe oder einem Steg versehenen Teilbalken in seiner Schalung,Fig. Ι a section through one with a rib or a bar provided with partial beams in its formwork,

Fig. 2 einen Schnitt durch einen Teilbalken mit rechteckigem Querschnitt in seiner Schalung,2 shows a section through a partial beam with a rectangular cross-section in its formwork,

Das Schalungsbett 1 weist eine Ausnehmung 2 auf, die bis zu einer wählbaren Höhe mit Sand 3 ausgefüllt wird. Nach dem Spannen der Bewehrungseinlagen 4, die gegebenenfalls vorgespannt sein können, werden die Bügel 5 in den Schalungsraum eingelegt, und zwar beispielsweise so, daß ein Teil ihrer Enden zwischen den beiden Bewehrungseinlagen zu liegen kommt, während die anderen Enden auf dem Schalungsboden aufliegen. Diese Enden fassen also in den in der Aussparung 2 eingebrachten Sand ein. Nunmehr wird der Beton in den Schalungsraum eingefüllt, von oben verdichtet und der Teilbalken nach dem Erhärten des Betons aus der Schalung herausgehoben. Die Schubbügel liegen dann bereits frei, da der Sa* i abfällt. Voraussetzung ist, daß der einzufüllende Beton erdfeuchte Konsistenz aufweist, damit er sich mit dem eingefüllten Sand nicht verbindet.The formwork bed 1 has a recess 2 which is filled with sand 3 up to a selectable height is filled out. After tensioning the reinforcement layers 4, which may be pre-tensioned can be, the bracket 5 are inserted into the formwork space, for example so that part of its ends come to rest between the two reinforcement layers, while the other ends rest on the bottom of the formwork. These ends therefore engage in the recess 2 introduced sand. Now the concrete is poured into the formwork space, from above compacted and the partial beam lifted out of the formwork after the concrete had hardened. the Push bars are then already exposed because the Sa * i falls off. The prerequisite is that the Concrete has an earth-moist consistency so that it does not combine with the poured sand.

Selbstverständlich kann man den Erfindungsgedanken auch anwenden, wenn der Querschnitt der Teilbalken rechteckförmig ist, wie dies aus Fig. 2 hervorgeht.Of course, the idea of the invention can also be used when the cross-section the partial bar is rectangular, as can be seen from FIG.

Claims (1)

PATENTANSPRUCH: S5PATENT CLAIM: S5 Schalung für die Herstellung von Teilbalken aus Stahl- oder Spannbeton mit Schubbügeln zum Verbund mit Ortbeton, deren freie Enden sich bei Herstellung des Teilbalkens in Riehtung auf die Spannbahn erstrecken, insbesondere zur Herstellung von Teilbalken nach dem Patent 938 329, dadurch gekennzeichnet, daß die Spannbahn an der Stelle, an der die Schubbügel aus dem zu fertigenden Teilbalken herausragen, tiefer ist, als es der Querschnittsform des fertigen Teilbalkens entspricht, und dieser Raum mit Sand od. dgl. ausgefüllt ist und die später aus dem Teilbalken herausragenden Schubbügelteile in den Sand od. dgl. einfassen. Formwork for the production of partial beams made of reinforced or prestressed concrete with push bars for bonding with in-situ concrete, the free ends of which are in the direction when the partial beam is produced extend to the tensioning track, in particular for the production of partial beams after Patent 938 329, characterized in that the tensioning track at the point where the Push handle protrude from the partial beam to be manufactured, is deeper than it corresponds to the cross-sectional shape of the finished partial beam, and this space is filled with sand or the like and the later protruding from the partial beam Enclose push handle parts in the sand or the like. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 573 695.Publications considered: German Patent No. 573 695. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEG14910A 1952-12-03 1954-07-17 Circuit for the production of partial beams made of reinforced or prestressed concrete Expired DE959627C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG14910A DE959627C (en) 1952-12-03 1954-07-17 Circuit for the production of partial beams made of reinforced or prestressed concrete

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG10393A DE938329C (en) 1952-12-03 1952-12-03 Prefabricated partial beam made of reinforced or prestressed concrete with push bars for bonding with in-situ concrete
DEG14910A DE959627C (en) 1952-12-03 1954-07-17 Circuit for the production of partial beams made of reinforced or prestressed concrete

Publications (1)

Publication Number Publication Date
DE959627C true DE959627C (en) 1957-03-07

Family

ID=25978016

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG14910A Expired DE959627C (en) 1952-12-03 1954-07-17 Circuit for the production of partial beams made of reinforced or prestressed concrete

Country Status (1)

Country Link
DE (1) DE959627C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075488B (en) * 1960-02-11

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE573695C (en) * 1931-02-12 1933-04-05 Ernst Voigt Device for producing double-reinforced T-shaped concrete beams

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE573695C (en) * 1931-02-12 1933-04-05 Ernst Voigt Device for producing double-reinforced T-shaped concrete beams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075488B (en) * 1960-02-11

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