PRESTRESSED TRUSSED BEAM Russian patent published in 2002 - IPC

FIELD: building structures. SUBSTANCE: prestressed trussed beam can be used in covering of buildings and structures, namely, as main beams of covers , structures of special assignment, for example, bearing members of viaducts, pedestrian overpasses, technological trestles and so on. Prestressed trussed beam includes stiffening girder, tie-rod passed in guides on ends of columns and suspensions of strut frames and tension unit. Coupling units of columns and suspensions of strut frames with tie-rod are located on curve which is convex with reference to longitudinal axis of stiffening girder in middle part of span and is concave in its sections near supports which carry suspensions of strut frames with tension units. Axes of columns and suspensions are matched with bisectors of angles formed by tie-rods at their ends. EFFECT: reduced usage of materials for manufacture of prestressed trussed beam subject to action of distributed loads. 5 dwg