FIELD: construction engineering. SUBSTANCE: device is used for strengthening load-bearing bending reinforced concrete beams and bays and for erecting monolithic reinforced concrete bays as temporary or permanent form. Beam structure is formed by metal beams formed by top and bottom ledges and vertical walls. Metal beams are Z- section structures, their vertical walls are joined together by coupling bolts driven into holes provided in beam structure. Ends of Z-section metal beams are fastened by stops through top ledges of Z-section metal beams; bottom ledges are joined together by metal slats and installed on additional supports at certain distance from beam ends. Additional supports may be moved upwards in the course of installation so as to ensure pre-stressing of device for strengthening. EFFECT: improved reliability; reduced metal input; provision for using device for strengthening under load at minimal extension of structure. 2 dwg
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