FIELD: construction.
SUBSTANCE: in anti-damage steel beam structure comprising two channels one channel is split and comprises two parts connected to each other with a middle plate. The middle plate is connected by flexible joints with a stand. Connections of split and non-split channels near walls are made with the help of bolts with bushings, and in spans - with the help of strut plates having bolt joints of connection with the non-split channel equipped with ratchet mechanisms. Connections of parts of the split channel with these plates are made with the help of units including bolts welded to strut plates, installed in curvilinear cuts of walls of the split channel parts. All cuts of the split channel part walls have ratchet racks, and bolts entering these cuts are equipped with stop devices. Slabs rest against the beam structure via planks arranged on the upper shelf of the split and non-split channel, but are only welded to the non-split channel.
EFFECT: prevention of structure collapse in case of emergencies.
7 dwg
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