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This method is used in the production of steel or steel-concrete supporting constructions in the construction industry, such as collar beams, columns for frame constructions, purlins, sub-crane and other beams. It allows for the tensioning of elements of practically unlimited length. The welding works are carried out automatically, while the tensioned element is used as a preparation for cutting individual parts to the necessary length. As the method shows, first the T-section (7), consisting of an upper belt and a stem, is enlarged and all welding works are carried out on it. After that, it is set in a strength stand in horizontal position and then the bottom belt (6) is with axially tensioned. Then the enlarged T-section is set, centered and fixed by carrying out elongated welding stitches (8), after which the tension is removed.
BG8378988A1988-04-181988-04-18Method of prestressing of t- shaped beams
BG50568A1
(en)
METHOD FOR CONNECTING A METAL CONDUCTOR TO AN ELECTRODE CONTAINING A FOAM FRAMEWORK AS A SUPPORT PART FOR AN ELECTROCHEMICAL GENERATOR AND ELECTRODE OBTAINED BY THIS METHOD