Method and apparatus for producing bundles of parallel wires for receiving large loads, especially for cable-spanned bridges, for the bracing of masts, for structures used in offshore engineering and the like

摘要

The invention relates to a method for producing prefabricated bundles of parallel wires to receive large loads, in which method a plurality of individual plastic-coated wires of equal length are provided at the works with anchoring heads at both ends and are combined into a bundle of wires arranged parallel to one another, which bundles are used either individually, provided with a large cross-section and a high supporting capacity, as tension members for cable-stayed bridges, as mast bracings, in offshore engineering and the like or are used as a plurality of correspondingly shaped bundles of parallel wires, which are combined at the building site to form a single supporting member, in the manufacture of the main cables of suspension bridges. In this process, the wires of the bundle of parallel wires are simultaneously inductively heated to a temperature at which the thermoplastic material softens, and are then pressed together in an arrangement corresponding to the desired shape of the bundle of parallel wires in such a way that the plastic fills the cavities between the wires to a substantial extent and sticks the wires together during cooling. Dimensionally stable hexagonal bundles of parallel wires, by means of which twisting is to be avoided, the wires can be positioned in a narrow space so as to be consistently parallel to one another and a considerable reduction in the cavities in the cable can be achieved are produced, together with an innovative and effective form of corrosion protection, preferably for the main cables of suspension bridges. An economical, more weather resistant and quality-improving embodiment is made possible, in which costs can be reduced by using the same plastic for 2 different tasks one after the other.