REGULATED-PRESSED REINFORCED-CONCRETE BEAM

摘要

The invention relates to branch of building and can be used for erection and reinforcement of spans of building and constructions. Regulated-pressed beam includes reinforced-concrete body with imbedded plates on surface and steel tightening fixed at ends with anchors and at middle interacting with tension element resting on lower side of beam and cross armature arranged as three-dimensional rod hinged rotary construction that surrounds at outside the beam and includes placed symmetrically in vertical plane at both sides of beam rigid yokes that are hinged at sides to horizontal frames that are in contact with imbedded items of upper and lower faces of the beam. In the middle part yokes are hinged to turn axes fixed on the lower half of the beam in support zone, at that tightening is fixed with anchors to the lower frame and in places of interaction of imbedded parts of beam and frames anti-friction coating is applied. Construction of reinforced-concrete beam proposed makes it possible to provide its high strength, fracture stability and rigidity by inclined cross sections due to self-regulated long and cross pressing of beam.