DE834359C - Process for the production of prestressed concrete components - Google Patents

Process for the production of prestressed concrete components

Info

Publication number
DE834359C
DE834359C DEP54846A DEP0054846A DE834359C DE 834359 C DE834359 C DE 834359C DE P54846 A DEP54846 A DE P54846A DE P0054846 A DEP0054846 A DE P0054846A DE 834359 C DE834359 C DE 834359C
Authority
DE
Germany
Prior art keywords
walls
production
formwork
tendon
prestressed concrete
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
DEP54846A
Other languages
German (de)
Inventor
Carl Jung
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
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 Individual filed Critical Individual
Priority to DEP54846A priority Critical patent/DE834359C/en
Application granted granted Critical
Publication of DE834359C publication Critical patent/DE834359C/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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

Für die Herstellung von Spannbetonbauteilen ist es bekannt, Schalungsformen zu verwenden, bei denen die Spannbewehrung in den sieh auf die Längswände abstützenden Stirnwänden der Form verankert ist. Derartige Schalungsformen sind außerordentlich vorteilhaft, da bei ihnen das Vorspannen der Bewehrung frei und unabhängig von irgendwelchen Festpunkten vorgenommen werden kann.Formwork forms are known for the production of prestressed concrete components to be used in which the prestressing reinforcement in the see on the longitudinal walls supporting End walls of the form is anchored. Such forms of formwork are extraordinary advantageous because they can prestress the reinforcement freely and independently of any Fixed points can be made.

Die Erfindung bezweckt eine Verbesserung und Vereinfachung dieser Schalungsformen und besteht im wesentlichen darin, daß die Formwände den Spanndruck ohne Hilfskonstruktion aufnehmen und ohne besondere Verschlußeinrichtungen durch den Spanndruck miteinander fest verbunden sind. Bisher waren nämlich mehr oder weniger umständliche Hilfs- und Stützvorridhtungen erforderlich, durch welche die Längswände der Schalungsform in Stand gesetzt wurden, der durch das Spannen der Bewehrung über die Stirnseiten auf sie ausgeübten Druckkraft zu widerstehen, und die Formwände mußten durch Verschluß- oder Verriegelungseinrichtungen miteinander verbunden werden. Alle diese Einrichtungen kommen bei der erfindungsgemäßen Schalungsform durch zweckmäßige Ausnutzung der an sich schon vorhandenen Zug- und Druckkräfte in Fortfall.The invention aims to improve and simplify these Formwork forms and consists essentially in that the mold walls the clamping pressure record without auxiliary construction and without special locking devices the clamping pressure are firmly connected to each other. So far there have been more or less cumbersome auxiliary and support devices required through which the longitudinal walls the formwork shape were repaired by stretching the reinforcement over the end faces to withstand compressive force applied to them, and the mold walls had to be connected to one another by locking or locking devices. All these devices come with the formwork according to the invention by expedient Use of the already existing tensile and compressive forces in elimination.

An Hand einer in Abb. i bis 4 dargestellten Ausführungsform wird die Erfindung näher erläutert. Abb. i zeigt einen Spanubetonträger mit einem T-förmigen Tragquerschnitt und zwei kubischen Auf lagerenden; -Abb. 2 stellt einen vertikalen, Abb. 3 einen horizontalen Längsschnitt des Trägers mit den dazugehörigen Formwänden dar; in Abb.4 ist eine Stirnansicht der Schalungsform wiedergegeben.On the basis of an embodiment shown in Fig. I to 4, the Invention explained in more detail. Fig. I shows a chipboard concrete beam with a T-shaped Load-bearing cross-section and two cubic ends; - Fig. 2 represents a vertical, Fig. 3 a horizontal longitudinal section of the beam with the associated mold walls dar; Figure 4 shows an end view of the formwork.

Das Formgehäuse besteht aus den beiden kurzen Stirnwänden a und den beiden Längswänden b.The molded housing consists of the two short end walls a and the both longitudinal walls b.

Da der Spannvorgang in einer Zugwirkung besteht, so löst er andererseits als Reaktion eine Druckwidkung .aus, und dadurch, daß die beiden Seitenwände b in der gleichen und parallelen Richtung mit dem vorzuspannenden Bewehrungsstahl c verlaufen, also auch mit der Zugkraft, ist die technische Möglichkeit geboten, diese Druckkraft auf die Seitenwände b überzuleiten. Zur Aufnahme und Überleitung der Zugkraft auf die beiden Seitenwände b sind die beiden Stirnwände a mitverwertet-F.s sind deshalb an diesen die Spannschrauben e entsprechend der statischen Lage des BeNvehrupgsstahls c angeordnet und geführt.Since the tensioning process consists of a tensile effect, on the other hand it triggers a pressure resistance as a reaction, and the technical possibility is that the two side walls b run in the same and parallel direction with the reinforcing steel c to be prestressed, i.e. also with the tensile force commanded to transfer this pressure force to the side walls b. To absorb and transfer the tensile force to the two side walls b , the two end walls a are also used-Fs, therefore, the clamping screws e are arranged and guided on these according to the static position of the reinforcement steel c.

Diese Überleitung geschieht in der Weise, daß die von der Spannschraube e ausgehende Zugwirkung mittels eines vorzugsweise langrunden Ringes f auf die Haken des Vorspanngliedes, d. 1i. des Bewehrungsstahls c, übertragen wird.This transition is done in such a way that the clamping screw e outgoing pulling action by means of a preferably elongated ring f on the hook of the tendon, d. 1i. of the reinforcing steel c, is transferred.

Außerdem wird hierdurch nach Beendigung des Abbindeprozesses des Betons die Loslösung des Hakens der Spannschraube e von dem des Bewehrungsstahls c ermöglicht und die WiederverNvendung der Spannschraube e erreicht.In addition, this is after the end of the setting process of the concrete enables the loosening of the hook of the clamping screw e from that of the reinforcing steel c and the reuse of the clamping screw e is achieved.

Die Ringe f verbleiben, da sie teilweise mit einbetoniert sind, an ihrem Ort und übertragen zusät@zlich mit dem Haken des Bewehrungsstahls c den auf sie ausgeübten Zug als Druck auf den Beton des hergestellten Trägers. Hierbei wird auch der Sicherheitsgrad des Bewehrungsstahls c gegen das Gleiten im Beton nahezu verdoppelt. Denn die Verankerung vollzieht sich in den kubischen Auflagerköpfen nicht ausschließlich durch die Beivelirungshaken, sondern auch durch die länglichen Ringe f also sowohl in senkrechter wie auch in der waagerechten Ebene.The rings f remain, because they are partially concreted in, on their place and additionally transferred with the hook of the reinforcing steel c the they exerted tension as compression on the concrete of the manufactured beam. Here is also the degree of safety of the reinforcing steel c against sliding in the concrete almost doubled. Because the anchoring takes place in the cubic support heads not only through the lifting hooks, but also through the elongated ones Rings f both in the vertical and in the horizontal plane.

Sodann können die freien Ringenden später an der Verwendungsstelle zur Verankerung mit dem Auflagermauerwerk verwendet werden.Then the free ring ends can later at the point of use can be used for anchoring to the supporting masonry.

Claims (2)

PATrNTA`srnt@c@ce: i. Schalungsform zur Herstellung von Spannbetonfertigteilen, bei der die Spannbewehrung in den sich auf die Längswände abstützenden Stirnwänden verankert ist, dadurch gekennzeichnet, daß die Formwände (a, b) ohne Hilfskonstruktion den Spanndruck aufnehmen und ohne besondere Verschlußeiiirichtungen durch den Spanndruck miteinander fest verbunden sind. PATrNTA`srnt @ c @ ce: i. Formwork form for the production of prestressed precast concrete parts, in the case of the prestressing reinforcement in the end walls which are supported on the longitudinal walls is anchored, characterized in that the mold walls (a, b) without auxiliary construction absorb the clamping pressure and without special locking devices by the clamping pressure are firmly connected to each other. 2. Schalungsform nach Anspruch i, gekennzeichnet durch je einen vorzugsweise langrunden Ring (f) für jedes Ende eines jeden Vorspanngliedes (c), in den einerseits das Vorspannglied (c) und andererseits die zugehörige, durch eine Öffnung in der Stirnwand (a) der Schalungsform gesteckte Spannschraube (e) lösbar eingehakt sind. Angezogene Druckschriften: Schweizerische Patentschrift Nr. 221 52c9.2. Formwork according to claim i, characterized by a preferably elongated ring (f) for each end of each tendon (c), in which on the one hand the tendon (c) and on the other hand the associated, through an opening in the end wall (a) of the formwork form inserted clamping screw (e) are releasably hooked. Attached publications: Swiss patent specification No. 221 52c9.
DEP54846A 1949-09-14 1949-09-14 Process for the production of prestressed concrete components Expired DE834359C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP54846A DE834359C (en) 1949-09-14 1949-09-14 Process for the production of prestressed concrete components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP54846A DE834359C (en) 1949-09-14 1949-09-14 Process for the production of prestressed concrete components

Publications (1)

Publication Number Publication Date
DE834359C true DE834359C (en) 1952-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEP54846A Expired DE834359C (en) 1949-09-14 1949-09-14 Process for the production of prestressed concrete components

Country Status (1)

Country Link
DE (1) DE834359C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944712C (en) * 1952-01-12 1956-06-21 Rolf Boenninghaus Dipl Ing Device for the production of reinforcement elements of any length from prestressed concrete for supporting structures with upwardly protruding from the precast concrete bodies
DE1113170B (en) * 1959-12-10 1961-08-24 Martin Menzel Device for the production of masts, pipes, columns and similar bodies from concrete and similar masses

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH221529A (en) * 1941-05-20 1942-06-15 Hunziker & Cie Zuerich Baustof Process for the production of concrete bodies provided with prestressed wire reinforcement and concrete bodies produced by the process.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH221529A (en) * 1941-05-20 1942-06-15 Hunziker & Cie Zuerich Baustof Process for the production of concrete bodies provided with prestressed wire reinforcement and concrete bodies produced by the process.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944712C (en) * 1952-01-12 1956-06-21 Rolf Boenninghaus Dipl Ing Device for the production of reinforcement elements of any length from prestressed concrete for supporting structures with upwardly protruding from the precast concrete bodies
DE1113170B (en) * 1959-12-10 1961-08-24 Martin Menzel Device for the production of masts, pipes, columns and similar bodies from concrete and similar masses

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