DE6601081U - DEVICE FOR ANCHORING STEEL BARS OR STEEL WIRE AND THE LIKE WITH PROFILED SURFACE - Google Patents

Description

The innovation relates to a device for anchoring of rods or rods and the like with profiled Oberfllacke, which are used in particular for the reinforcement of concrete components, consisting of a Pull ring with a conical bore and wedge-shaped clamping elements resting on this and supporting one another.

For anchoring reinforcement layers in the form of bars and wires in concrete or prestressed concrete construction is the principle

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the power transmission from steel to concrete through adhesion and friction or adhesive bond is known and is commonly used. Here are the forces as a result of Transferring the composite effect resulting from the profiling of the surface, the transferring surface is more or less large; usually the rebars or wires are the full length of concrete surround.

In practice, however, there is often a need or need to anchor reinforcing bars or wires over a relatively short length, for example in concrete or in rocks. The anchoring must of course transfer the full tensile force at the anchor point. The anchoring is carried out for example- "wviss uütsr Vsrvsndung von K.silss sit sine ™ Ztis— bz-Vs clamping ring. - i- odef räesrtelllg and roughened, corrugated, toothed or otherwise profiled on the surface facing the rod or wire to be anchored. Nan has already given the wedges the same negative profile as the rods or wires the contact points of the wedges have a positive shape. Ώ · τ · The material of these clamping jaws or wedges is relatively hard, but in any case harder than the rod to be anchored of the wedges are pressed into the surface of the rods or wires, which prevents them from sliding out of the anchor body when there is a corresponding tensile load he adapted profiling of the rod result in considerable

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Difficulties in adapting the profile »This type döx anchoring had considerable disadvantages in this respect; than the elements engaging the rods or wires result in changes in the shape of the rods or wires at the jamming point, through which the theoretically possible power transmission is reduced to a lower value »The rods or» wires are thus more or less endangered at the clamping point »

The disadvantage is further characterized in that the subsequent attachment of wedges between the rods or "wires country a" these usgsbenden clamping ring like o _{s c} by driving the same is not possible. Apart from the fact that only wedges with smooth surfaces can be used for this purpose, the profiling of the rod or wire surface prevents the wedges from securing sufficiently, which moreover only occur in the few exposed areas of the silicones; DrsiitproiilAertiii ^ concern "

Furthermore, it is already known for the transmission of Forces from the reinforcement rods or wires on concrete components and the like, other anchor bodies of the most varied Type of use »These include hook anchors, rivet head anchors, screw anchors, clamping plate anchors, as well as pressed onto the rods or wires Anchor body

These previously known anchoring bodies or elements are designed in such a way that they are not generally uniform on the steel rods or wires to be anchored attack, so that the rods or »wires can experience a stress that they often cannot cope with are"

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The innovation is based on the task of anchoring of steel rods or wires and the like, which have a profiled surface, and which wedges or similar elements acting on the rods or wires are used to improve that the shortcomings and disadvantages of the known anchor body are avoided.

To solve this problem, it is proposed according to the innovation, between the profiled steel rod or -wire α. The like and the wedge-shaped clamping elements an intermediate layer or layer to be arranged, which consists of a Material consists that is softer than the material of the rod or wire material · Through ^ this measure is taken achieves that a profile on the rods bs ^, wires a22JLieges.de! » Surfaces of the do without coming parts and these also one can produce more economical, tough material., so that the rods or »wires are no longer damaged and are considerably more even and on a considerably larger scale be clamped or recorded in the contact surface. As a result of using the softer material for the intermediate layer or intermediate layer between the rod or Wire and wedge-shaped Klenna iron adapts itself these because of their easy deformability when attaching of the pull ring of the profile of the rod or wire and can thus practically at the clamping point the entire eligible surface of the rod or wire, so that the transmission of forces from the rod or wire to the pull ring is much better and can be done more advantageously than before.

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The newly designed anchoring of steel bars baw. wires has the great advantage that the

wedge-shaped clamping elements no longer with the previous |!

necessary precision to be machined, '

that they are made of commercially available material with sufficient- ';

the strength with high toughness and thus low- '

rer risk of breakage can throw that the hardness and profile of the wedge-shaped clamping elements te is irrelevant to the anchoring itself, and fet

Finally, that the profiling of the steel rods or wires, which is normally intended for bonding in concrete, can also be used for anchoring when clamping over short lengths by means of a tension ring, i.e. ₃ hours. that it is not necessary to provide a special profiling of the rods or wires.

For the intermediate layer or intermediate layer between the rods or wires and the wedge-shaped clamping elements acting on them, a material is used whose degree of softness depends on the forces occurring and which is selected or determined in such a way that a less soft one is used for greater forces Material is used. The material for the intermediate layer or intermediate layer can be of different types. Bs can e.g. Found as metal verschiedenster type use od such as soft iron, lead, zinc _v aluminum, copper, etc. "metals or suitable metal alloys, or also plastics, or · synthetic resins, however, be high strength as well as sufficient elasticity must have. A rapidly hardenable plastic can advantageously be used, the hardening of which occurs after wedging or bracing

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is effected.

In the drawing xst a particularly advantageous embodiment the newest device for Anchoring of steel rods bxw «wires with profiled Surface shown

Claims (1)

1 device for anchoring steel rods or -wires and the like with profiled surface, t * - consisting of a pull ring with a conical bore and wedge-shaped, which rests on and supports each other Clamping elements, characterized by an intermediate layer or layer between the wedge-shaped Elements and the rod or wire made of a material which is softer than the material of the rod or wire Wire material 2. Device according to claim 1, characterized in that that the degree of softness of the material of the intermediate layer or layer depends on the -2- the forces is chosen in such a way that a less soft material is used for greater force Ii finds. 3 · Device according to claim 1 or 2, characterized through an intermediate layer or layer made of metallic material, such as in particular soft iron, zinc, lead, Aluminum, copper or similar soft metals or alloys of the same » k. Device according to claim 1 or 2, characterized by an intermediate layer or layer made of rapidly hardenable, high-strength and elastic plastic or synthetic resin « 5. Device according to one of claims 1 to 4, characterized by using only one wedge-shaped clamping element that engages approximately half the rod or wire circumference s.