DE1484190C3

DE1484190C3 - Element for connecting two reinforcing bars or wires that cross each other

Info

Publication number: DE1484190C3
Application number: DE19641484190
Authority: DE
Inventors: Auf Nichtnennung Antrag
Original assignee: Ferrotest GmbH
Current assignee: Ferrotest GmbH
Priority date: 1964-10-23
Filing date: 1964-10-23
Publication date: 1974-06-06
Also published as: DE1484190A1; DE1484190B2; AT270964B; CH440641A; GB1129802A

Description

halterzapfens 14 nach außen vor und bewirkt in dem das Element 13 umgebenden Beton eine Abdichtung eines möglicherweise sich bildenden Spalts zwischen dem Verbindungselement 13 und dem dieses umgebenden Beton.holder pin 14 to the outside and causes a seal in the concrete surrounding the element 13 a possibly forming gap between the connecting element 13 and that surrounding it Concrete.

Es ist aber auch möglich, in der in F i g. 2 gezeigten Weise das Element 13' bzw. den Abstandhalterzapfen 14' mit einem Wulst 18' zu versehen, der zwei Kegelflächen 19 und 20 aufweist und der nach außen über die z. B. zylindrische Mantelfläche des Verbindungselements 13' herausragt. ,Wenn zwischen dem das Verbindungselement 13' und dem dieses umgebenden Beton ein Spalt entstanden sein sollte, so wird jeweils eine der beiden Flächen 19 oder 20 bei Volumenänderungen infolge von Temperaturunterschieden oder dergleichen die gewünschte Spaltabdichtung herbeiführen.But it is also possible in the in F i g. 2 shown Way to provide the element 13 'or the spacer pin 14' with a bead 18 ', the two Has conical surfaces 19 and 20 and the outward via the z. B. cylindrical outer surface of the connecting element 13 'protrudes. If between the connecting element 13 'and that surrounding it If a gap should have arisen in concrete, one of the two surfaces 19 or 20 is shown in each case Volume changes as a result of temperature differences or the like the desired gap sealing bring about.

Bei dem Element nach F i g. 3 ist durch eine ausgerundete Rille dieselbe Wirkung zu erzielen. In the element according to FIG. 3 the same effect can be achieved with a rounded groove.

Selbstverständlich ist es auch möglich, in oder an dem Verbindungselement bzw. Abstandhalterzapfen mehrere Rillen bzw. Wülste anzuordnen, wobei dann die Oberfläche des Abstandhalterzapfens vorzugsweise ein sägeförmiges Profil aufweist; dadurch werden dann die Dichtflächen entsprechend vermehrt.Of course, it is also possible in or on the connecting element or spacer pin to arrange several grooves or beads, in which case the surface of the spacer pin is preferred has a saw-shaped profile; this then increases the sealing surfaces accordingly.

Die erfindungsgemäße Ausbildung der Abstandhalterzapfen der Verbindungselemente ist vor allem dann von Bedeutung, wenn das Verbindungselement aus Kunststoff besteht, der bei Temperaturschwankungen eine dreimal so große Volumenäriderung erfährt wie der Beton. Es ist dann die Gefahr der Bildung feiner Spalte zwischen den Verbindungselementen und dem diese umgebenden Beton besondersgroß. The inventive design of the spacer pins of the connecting elements is above all then of importance if the connecting element is made of plastic, the temperature fluctuations A volume deterioration is three times as great as that of the concrete. It is then the risk of Formation of fine gaps between the connecting elements and the surrounding concrete is particularly large.

Hierzu 1 Blatt Zeichnungen 1 sheet of drawings

Claims

1 . 2 known spacers for concrete reinforcement claims: stanchions, the side surfaces of the spacer body formed in such a way that they have at least one shoulder,

1. Element for connecting two crosses protruding outwards from the side surfaces and in Zender reinforcing bars or wires ending with a sharp outer edge. The outer edge Reinforcement mats or the like with a spacer should be used here by surfaces of the spacer body serving pin, which be det in the axial direction at an angle of at most 90 ° at least one cross-sectional taper and one abut one another. It should according to the information in the subject cross-sectional expansion thus failing the patent specification of moisture, characterized in that the cross-sectional ver- io to wander around the sharp outer edge.

- Younger and the cross-sectional expansion cone- With the known spacer is not with

areas 16, 17; 19, 20) or, with absolute certainty, the penetration of moisture

rounded groove are formed. to the rebar prevents. If the

2. Element according to claim 1, characterized by spacers more closely together than redrawn it, that the spacer pin is against 15 bende concrete, a fine gap is created in which - the contact surface tapers out. even if he is angled at the point of the paragraph

is - the moisture can penetrate to the reinforcement bar can. In addition, with the known spacer there is a risk that when loading,

20 when transporting or laying the reinforcement elements, the sharp outer edges of the spacers be damaged, so that the effect specified in the patent can no longer occur.

A safe moisture protection is with a

The invention relates to an element for connecting 25 connecting element of the type mentioned in the introduction two crossing reinforcing bars or wires achieved according to the invention in that the cross-link Reinforcement mesh or the like with a section tapering and the cross-sectional expansion Standhalter serving pin, which contain conical surfaces in the axial direction or by a rounded at least one cross-sectional taper and one groove are formed.

Has cross-sectional expansion. 30 As a result of this measure, there is always a pressing

It is already known to form a closed ring-shaped surface part of the reinforcement mats, cages and the like by means of the cross spacers on the inner surface of the hollow concrete reinforcing bars or wires by means of an anteroom and thus a seal. The elements or elements that are made of plastic are not based on the idea of connecting with each other through bodies, with these sharp edges preventing the penetration of moisture as a force-fit between the rods or wires, but rather on the idea of using a appropriately encompassing bodies are designed to create the additional shape of the spacer as a closed ring or with a sealing surface which is mostly shaped towards a certain side,
protruding conical pegs are provided, preferably the spacer peg is between

which has the task of reinforcing the reinforcement in one of its bearing surfaces at the free end and the next one To keep a distance from a formwork, lying rebar with at least one him so that they are completely embedded in the concrete at the desired depth is and at this point then their static surfaces or provided with a groove or the like. Able to fulfill the task. The invention is achieved by three embodiments

With the connection games commonly used up to now, explained in more detail with the aid of three figures,
element with spacer pins is possible- F i g. 1 and 2 each show a side view of one

It cannot be ruled out that - there is no fixed connection element to connect two crossing bond adhesion of the concrete to the connecting elements reinforcing bars in two embodiments, with ten is made of plastic - for example, as a result of a different distance supported on a base Volume changes due to 50 holders;

Temperature fluctuations or for other reasons. 3 shows another embodiment of a

between the connecting element surrounding such a connecting element,
the concrete and this itself formed a fine gap. As shown in FIGS. 1 and 2 are the

is, the reinforcing bars 11 and 12 crossing each other up to that surface of a component, which is formed by the formwork, on 55 for example a reinforcement mat, by means of or on which the connecting element with its plastic plastic element 13 or 13 'force spacer is on or resting on it. The result is that they are coherently connected. One of the areas where moisture can penetrate the fine crevice. Surface of a formwork 5 facing the end of and thus reaches the point at which the Beweh- elements 13 or 13 'is a spacer rods or wires from the 60 connecting pins 14 or 14', which ensures that the Be plastic body leak. There, reinforcement bars 11 or 12 can have a predetermined abrasion on the bars or wires caused by the surface of the formwork S,
which are absolutely undesirable, especially des- In the embodiment of FIG

half because once. the corrosion so far tapering towards a flattened tip can be steps that the reinforcing bars are not 65 spacer pin 14 of a groove 15 through are more able to do their job. the conical surfaces 16 and 17, respectively, is formed. A

To avoid these disadvantages, the collar or bead 18 surrounding the spacer by the Swiss patent 368 293 jumps opposite the conical surface 16 of the spacing