SU1744216A1 - Reenforcement rope - Google Patents

Abstract

Use: in the manufacture of building products, namely for the reinforcement of pre-stressed reinforced concrete structures. The essence of the invention: the reinforcing rope consists of a central wire, on the surface of which rounded longitudinal grooves are formed, located along a helical line with a pitch corresponding to the twist of the outer wires, while the radius of rounding of the grooves corresponds to the diameter of the outer wires located in them. 7 il.

Description

The invention relates to the manufacture of building products, namely for the reinforcement of prestressed reinforced concrete structures.

Known reinforcing cable K-7 single twist construction 1x7, having in the outer layer of six round wires, twisted around a central round wire.

Known reinforcing rope containing the central wire and the outer wires of the same diameter wound around it or arranged with alternating wires of different diameters.

The adhesion surface of reinforcing ropes of such structures with concrete is small and requires the installation of special anchors and the use of high-grade concrete.

The purpose of the invention is to increase the degree of adhesion of the rope to the concrete.

The goal is achieved by the fact that rounded longitudinal grooves are formed on the surface of the central wire, located along a helical line with a pitch corresponding to the outer

wires, while the bonding radius of the grooves corresponds to the diameter of the outer wires located in them.

Figures 1-7 depict reinforcing ropes having round wires of the same or different diameters in the outer layer, with the wires of a smaller diameter alternating with wires of a larger diameter. The wires of the outer sheet are retinas around a shaped core having oblique grooves in which a part of the wires of the outer winding is placed.

Presented in FIG. 1 and 2 reinforcing rope formed by winding around the central shaped wire 1 round wires 2 of different diameters. FIG. 3 and 4 depicts the central wire 1 with oblique grooves running at an angle an to the longitudinal axis equal to the angle of the cable lay-up to. The surface of the oblique grooves is made as part of an arc of a circle with radius R equal to the radius of the outer wires; 0.15 outer wire diameter. Recommended center diameter

(L

WITH

2

4 S

ck

the wires are taken in the range of 3-8 mm, and the outer wires - 2-6 mm. Step lay outer wire-10-16 rope diameters.

Presented in FIG. 5-7, the reinforcing rope is formed by winding around the central shaped wire 1 round wires 2 of larger and round wires 3 of smaller diameter alternating with each other. In this case, in the rope shown in FIG. 6, the outer wires of 2 large diameters enter the oblique grooves of the core 1, and in the rope shown in FIG. 7, the outer wires of 3 smaller diameters enter the oblique grooves of the core 1.

The proposed rope design can be made on existing curlers. The central wire with oblique grooves can be made by stamping with subsequent drawing.

Thus, the ropes of the proposed construction allow, by improving their adhesion to concrete, to reduce the class of concrete by one step, thereby reducing the consumption of cement, rejecting the use of internal anchors, which saves metal, increases crack resistance and durability of structures, and reduces operating costs.

Claims (1)

Claims of the invention: A reinforcing rope containing a central wire and external wires of the same diameter wound around it or arranged with alternation of wires of different diameters, so that, in order to increase its degree adhesion with concrete, rounded longitudinal grooves are formed on the surface of the central wire, located along a helical line with a pitch corresponding to the twist of the outer wires, while the radius of the rounding of the slots corresponds to the diameter of the outer wires located in them. 2 cin one Fig.Z 3 FIG. 6 W 5 7