DE940608C - Press for applying tensile forces to the tendons in the manufacture of prestressed concrete - Google Patents

Press for applying tensile forces to the tendons in the manufacture of prestressed concrete

Info

Publication number
DE940608C
DE940608C DEB28510A DEB0028510A DE940608C DE 940608 C DE940608 C DE 940608C DE B28510 A DEB28510 A DE B28510A DE B0028510 A DEB0028510 A DE B0028510A DE 940608 C DE940608 C DE 940608C
Authority
DE
Germany
Prior art keywords
press
tendons
prestressed concrete
tensile forces
manufacture
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
DEB28510A
Other languages
German (de)
Inventor
Rudolf Dipl-Ing Buehrer
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 DEB28510A priority Critical patent/DE940608C/en
Application granted granted Critical
Publication of DE940608C publication Critical patent/DE940608C/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12Mounting of reinforcing inserts; Prestressing
    • E04G21/121Construction of stressing jacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

Die Erfindung bezieht sich -auf eine Presse, die beim Eintragen der Vorspannkräfte; insbesondere in die als Bewehrungen von Spannbeton dienenden Stäbe, Verwendung findet.The invention relates to a press that when entering the Preload forces; especially in the bars used as reinforcement of prestressed concrete, Is used.

Hydraulisch betriebene Pressen dieser Art wurden--bisher in :Achsrichtung über das an der Verankerungsstelle nur kurz aus dem Ankerkörper herausragende Stabende gesteckt. Zu diesem Zweck war die Presse mit einer axial im Pressenkörper verlaufenden Einführungsbohrung rausgestattet.Hydraulically operated presses of this type were - previously in: axial direction via the rod end protruding only briefly from the anchor body at the anchorage point plugged. For this purpose the press was equipped with an axially extending one in the press body Insertion hole outfitted.

Die Erfindung sieht demgegenüber vor, die Presse mit zwei symmetrisch sitzenden Zylindern auszurüsten, die so miteinander verbunden ' sind, daß die Presse an beliebiger Stelle auf beliebig lange Stäbe aufgesetzt werden kann..The invention provides, on the other hand, the press with two symmetrical to equip seated cylinders, which are so interconnected that the press can be placed anywhere on rods of any length ..

Mit Hilfe einer erfindungsgemäß ausgebildeten Presse ist es erstmalig möglich,- ein beliebig langes Spannglied in Teilabschnitten unter' Spannung zu setzen. Man kann also beispielsweise eine mehrere hundert Meter lange Beton-Fahrbahnplatte in- der Weise vorspannen, daß man entsprechend lange Vorspannstäbe auslegt und zunächst nur einen beliebig kurzen Fahrbahnabschnittbetoniert, Am Ende dieses ersten Bauabschnittes wird eine zuvor eingefädelte Ankerplatte od. dgl. einbetoniert, in die nach. dem Erhärten des Betons geeignete Verankerungsglieder eingebracht werden. Zum Eintragen der Vorspannkräfte kann dann die Presse an dieser Stelle auf das Spannglied @äufgi#§eti@ werden. Dieser Vorgang wiederholt siel@..von-:Bauabschnitt zu Bauabschnitt an allen eingelegten Stäben. Die Zeichnung zeigt schematisch ein Ausführungsbeispiel einer Presse gemäß der Erfindung.It is the first time with the aid of a press designed according to the invention possible, - to put a tendon of any length under tension in sections. For example, you can use a concrete deck several hundred meters long Pretension in such a way that appropriately long pretensioning rods are laid out and first Concreted only an arbitrarily short section of the roadway at the end of this first construction phase a previously threaded anchor plate or the like is concreted into the after. to the If the concrete hardens, suitable anchoring links are inserted. To register the prestressing forces can then be applied to the tendon @ äufgi # §eti @ at this point will. This process is repeated siel @ .. from-: construction section to construction section at all inlaid bars. The drawing shows schematically an embodiment of a Press according to the invention.

Fig. i ist ein Längsschnitt durch die Presse mit angedeutetem Spannstab, Fig. 2 ein Querschnitt durch die Presse nach der Linie II-II der Fig. i, Fig. 3 ein Querschnitt durch die Presse nach der Linie III-III der Fig. i.Fig. I is a longitudinal section through the press with indicated tension rod, FIG. 2 shows a cross section through the press along the line II-II in FIGS. 1, 3 a cross section through the press along the line III-III of Fig. i.

i ist ein Teilstück des zu spannenden Stabes und 2 ein Ankerkörper, der am Ende eines Betonkörpers einbetoniert ist. Mit 3 ist eine radial im Pressenkörper angeordnete Aussparung bezeichnet, die sich über die ganze Länge des Pressenkörpers erstreckt und zur Aufnahme des Stabteiles i dient. Die Aussparung 3 verläuft vom Umfang des Pressenkörpexs bis soweit über die Längsachse hinaus, daß der- Stab i zentrisch zur Pressenlängsachse zu liegen kofiiit (Fig. 2) . q. sind zwei symmetrisch angeordnete Preßzylinder. Sie wirken auf eine gemeinsame Platte 5 (Fig. 3), in welcher der vorzuspannende Stab i mit Hilfe von Keilfuttern 6 in üblicher Weise eingespannt wird.i is a section of the rod to be tensioned and 2 is an anchor body, which is set in concrete at the end of a concrete body. With 3 is a radial in the press body arranged recess, which extends over the entire length of the press body extends and serves to accommodate the rod part i. The recess 3 runs from Circumference of the press body ex up to the point beyond the longitudinal axis that the rod i Kofiiit to lie centrically to the longitudinal axis of the press (Fig. 2). q. are two symmetrical arranged press cylinder. They act on a common plate 5 (Fig. 3), in which the rod i to be prestressed is clamped in the usual way with the aid of wedge chucks 6 will.

Claims (1)

PATENTANSPRUCH: Presse zum Eintragen von Zugkräften in die Spannglieder bei der Herstellung von Spannbeton, gekennzeichnet durch zwei symmetrisch angeordnete Zylinder, die derart miteinander @'.ve7-rbunden,sind, daß die Presse das Spannglied ig@Querschnitt etwa hufeisenförmig umschließt, so daß sie auf das Spannglied an beliebiger Stelle rittlings_aufgesetzt-werden kann. PATENT CLAIM: Press for introducing tensile forces into the tendons in the production of prestressed concrete, characterized by two symmetrically arranged cylinders which are connected to one another in such a way that the press encloses the tendon approximately in the shape of a horseshoe, so that it can be placed astride the tendon at any point.
DEB28510A 1952-07-12 1952-07-12 Press for applying tensile forces to the tendons in the manufacture of prestressed concrete Expired DE940608C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB28510A DE940608C (en) 1952-07-12 1952-07-12 Press for applying tensile forces to the tendons in the manufacture of prestressed concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB28510A DE940608C (en) 1952-07-12 1952-07-12 Press for applying tensile forces to the tendons in the manufacture of prestressed concrete

Publications (1)

Publication Number Publication Date
DE940608C true DE940608C (en) 1956-03-22

Family

ID=6962674

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB28510A Expired DE940608C (en) 1952-07-12 1952-07-12 Press for applying tensile forces to the tendons in the manufacture of prestressed concrete

Country Status (1)

Country Link
DE (1) DE940608C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194536A (en) * 1963-03-06 1965-07-13 James S Simms Pre-stressed concrete reinforced strand tensioning device
EP0518771A1 (en) * 1991-06-13 1992-12-16 FREYSSINET INTERNATIONAL et COMPAGNIE Method of and device for the reinforcement of the pressure load capacity of concrete and reinforced concrete structures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194536A (en) * 1963-03-06 1965-07-13 James S Simms Pre-stressed concrete reinforced strand tensioning device
EP0518771A1 (en) * 1991-06-13 1992-12-16 FREYSSINET INTERNATIONAL et COMPAGNIE Method of and device for the reinforcement of the pressure load capacity of concrete and reinforced concrete structures
FR2677693A1 (en) * 1991-06-13 1992-12-18 Freyssinet Int & Co IMPROVEMENTS IN PROCESSES AND DEVICES FOR REINFORCING CONCRETE WITH COMPRESSION AND CONCRETE STRUCTURES THUS REINFORCED.
US5272851A (en) * 1991-06-13 1993-12-28 Freyssinet International Et Compagnie Improvements to the devices for reinforcing concrete in compression and to concrete works thus reinforced

Similar Documents

Publication Publication Date Title
DE940608C (en) Press for applying tensile forces to the tendons in the manufacture of prestressed concrete
DE1784332A1 (en) Method for fastening an anchor body made of steel on a tension wire
AT166309B (en) Method and device for generating prestressing in concrete reinforcement
DE2449289B2 (en) PRESTRESSED COMPRESSED ANCHOR
DE2734757A1 (en) Prestressed concrete beam mfr. - uses threaded steel bars inserted into sheaths joined to screwed sleeves to reduce prestress at supports
DE977020C (en) Method for tensioning and anchoring tension wire bundles for a supporting structure made of hardened concrete
DE975466C (en) Prestressed component and process for its manufacture
DE956981C (en) Anchoring of rod-shaped tendons in concrete
AT162068B (en) Process for the production of structural elements made of wood, prestressed to a certain load.
DE829124C (en) Process for the production of beam-shaped prestressed concrete bodies
CH221529A (en) Process for the production of concrete bodies provided with prestressed wire reinforcement and concrete bodies produced by the process.
DE972461C (en) Device for prestressing reinforced concrete components
AT233785B (en) Wire bundle anchoring for prestressed concrete structures
DE2455993A1 (en) Composite steel and concrete bridge girder prestressing - with steel girder serving as concrete stress member after initial loose connection
DE1659029C3 (en) Process for prestressing concrete components and reinforcing bars
DE2906797A1 (en) Reinforced concrete girder construction - involves retainer anchor fixing at stress member ends before concreting
DE1058909B (en) Device for making railway sleepers from prestressed concrete
AT205992B (en) Method of making arches
DE966152C (en) Process for tensioning curved or kinked tendons of prestressed reinforced concrete parts
CH366376A (en) Method for anchoring wire bundles for prestressed concrete structures
DE1041993B (en) Reinforced concrete sleeper with prestressed reinforcement that acts as an instant bond
CH362204A (en) Process for the production of tension belts from prestressed concrete in which the reinforcement is concreted in
DE1853341U (en) DEVICE FOR PRE-TENSIONING STEEL ROPES IN REINFORCED CONCRETE COMPONENTS.
DE2404780A1 (en) Concrete building component prestressing device - with gib and cotter assembly built in for stress-wires' anchorage
DE1750177U (en) DEVICE FOR PRE-TENSIONING REINFORCED CONCRETE COMPONENTS WITH HIGH QUALITY STEELS.