DE572037C - Process for the production of support structures and other static iron structures with wire strand tendons - Google Patents

Process for the production of support structures and other static iron structures with wire strand tendons

Info

Publication number
DE572037C
DE572037C DEK106965D DEK0106965D DE572037C DE 572037 C DE572037 C DE 572037C DE K106965 D DEK106965 D DE K106965D DE K0106965 D DEK0106965 D DE K0106965D DE 572037 C DE572037 C DE 572037C
Authority
DE
Germany
Prior art keywords
structures
wire strand
production
static iron
support structures
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
DEK106965D
Other languages
German (de)
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.)
E H OTTO KRELL DR ING
Original Assignee
E H OTTO KRELL DR ING
Publication date
Priority to DEK106965D priority Critical patent/DE572037C/en
Application granted granted Critical
Publication of DE572037C publication Critical patent/DE572037C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/14—Devices or coupling-pieces designed for easy formation of adjustable loops, e.g. choker hooks; Hooks or eyes with integral parts designed to facilitate quick attachment to cables or ropes at any point, e.g. by forming loops
    • F16G11/146—Eyes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/02—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with parts deformable to grip the cable or cables; Fastening means which engage a sleeve or the like fixed on the cable

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)

Description

Nachspannvorrichtungen in statischen Baukonstruktionen sind Notbehelfe, um Mangel in der Konstruktion, ungenaue Ausführung oder nicht sorgfältigen Zusammenbau· bei der Aufstellung auszugleichen. Genaue Ausführung und genauen Zusammenbau vorausgesetzt, liegt kein Grund vor, die Länge der Zugglieder erst mittels Spannschlösser und Einstellvorrichtungen den örtlichen Verhältnissen anzupassen, sondern man erzielt durch den einfachen Einbau gewissenhaft in ihrer Länge genau hergestellter Zugglieder die beste Annäherung an die der Berechnung des Bauwerkes zugrunde gelegten Verhältnisse.
Stellt man genau abgepaßte Zugglieder her, so kann man ihre Bauart einzig nach dem Zwecke richten, dem sie dienen sollen, nämlich nur Zugkräfte sicher und mit geringstem Baustoffaufwand aufzunehmen.
Das Verfahren gemäß der Erfindung erstreckt sich auf die bekannten Trägergebilde u. dgl. mit Drahtstrangzuggliedern und besteht darin, daß die Drahtstrangzugglieder vor dem Einbau durch Reckung über ihre a5 Elastizitätsgrenze auf die für das Zugglied in Betracht kommende Einbaulänge gebracht und in diesem Zustande eingebaut werden.Retensioning devices in static building constructions are a makeshift aid to compensate for deficiencies in the construction, inaccurate execution or careless assembly · during installation. Assuming exact execution and exact assembly, there is no reason to first adjust the length of the tension members to local conditions by means of turnbuckles and adjustment devices, but the best approximation to the calculation of the structure is achieved through the simple installation of tension members that are conscientiously manufactured in their length established conditions.
If you produce precisely matched tension members, you can only adjust their design according to the purpose they are to serve, namely to absorb only tensile forces safely and with the least amount of building material.
Be the method of the invention extends to the known supporting structure u. Like. With Drahtstrangzuggliedern and is that the Drahtstrangzugglieder before installation by stretching over their a 5 elastic limit placed on the next to the tension member in consideration installation length and installed in this condition .

Es .wird in folgender Weise ausgeführt: man wickelt zähen Draht als Strang über zwei Stifte, die einen etwas geringeren Abstand voneinander haben als die Bolzen, mit denen das Zugglied in die Eisenkonstruktion eingefügt werden soll·. Der so erhaltene Drahtstrang wird dann so weit gereckt, bis die Entfernung der Mittelpunkte seiner ösen bleibend, also auch nach Beseitigung der reckenden Kraft, genau der Einbaulänge entspricht, so daß er ohne jede Einstellvorrichtung in die statische Eisenkonstruktion eingebaut werden kann. Das Drahtbündel zwi- 4» sehen den ösen wird in angemessenen Abständen mit einfach zusammengebogenen Schellen s aus Blech, wie in den Abb. ι und 2 dargestellt ist, zusammengehalten. Durch das Recken wird insbesondere erreicht, daß samtliehe im Drahtstrang zueinander und zur Strangachse parallel laufenden Drähte bei der ersten Zugbeanspruchung des Drahtstranges sofort zum Tragen kommen, was bei allen nicht vorgereckten Drahtsträngen nicht der Fall ist. Daraus geht hervor, daß nicht vorgereckte Drahtstränge stärker bemessen und damit schwerer werden müssen, weil ein entsprechend hoher Sicherheitskoeffizient in Ansatz gebracht werden muß, oder daß bei geringeren Abmessungen sich die Drahtstränge infolge Uberbeanspruchung zu kurzer Drähte nach dem Einbau ungleichmäßig recken und damit den zusätzlichen .Einbau von Nachstellvorrichtungen notwendig machen. Man kann also nur bei erfindungsgemäß vorgereckten Drahtstrangzuggliedern auf den Einbau von Nachspannvorrichtungen verzichten.It is carried out in the following way: one winds tough wire as a strand over two pins that are a little smaller apart than the bolts with which the tension member is to be inserted into the iron structure. The wire strand obtained in this way is then stretched until the distance of the center points of its eyelets, i.e. even after removal of the stretching force, corresponds exactly to the installation length, so that it can be installed in the static iron structure without any adjustment device. The wire bundles be- 4 »see the eyelets is at appropriate intervals with easy to bend clamps s, held together from sheet metal, as shown. Ι in Figures and 2 is shown. By stretching it is achieved in particular that all wires running parallel to each other and to the strand axis come into play immediately when the wire strand is subjected to tensile stress, which is not the case with all wire strands that have not been pre-stretched. This shows that wire strands that have not been pre-stretched have to be made larger and therefore heavier, because a correspondingly high safety coefficient must be taken into account, or that with smaller dimensions the wire strands stretch unevenly after installation due to overstressing of wires that are too short and thus the additional ones. Make the installation of adjusting devices necessary. It is therefore only possible to dispense with the installation of tensioning devices in the case of wire strand tension members that are pre-stretched according to the invention.

Claims (1)

Patentanspruch: e.Claim: e . Verfahren zur Herstellung von Trägergebilden und anderen statischen Eisenkonstruktionen mit Drahtstrangzuggliedern, dadurch gekennzeichnet, daß der Drahtstrang in einer im Vergleich zur Einbaulänge geringeren Länge um zwei Endkauschen gewickelt, dann auf die genaue Einbaulänge gereckt und in diesem Zustande eingebaut wird.Process for the production of support structures and other static iron structures with wire strand tension members, characterized in that the wire strand has a length in comparison to the installation length shorter length wound around two end thimbles, then stretched to the exact installation length and in this condition is installed. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEK106965D Process for the production of support structures and other static iron structures with wire strand tendons Expired DE572037C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK106965D DE572037C (en) Process for the production of support structures and other static iron structures with wire strand tendons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK106965D DE572037C (en) Process for the production of support structures and other static iron structures with wire strand tendons

Publications (1)

Publication Number Publication Date
DE572037C true DE572037C (en) 1933-03-09

Family

ID=7241056

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK106965D Expired DE572037C (en) Process for the production of support structures and other static iron structures with wire strand tendons

Country Status (1)

Country Link
DE (1) DE572037C (en)

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