TRUSS MADE FROM ROLL-WELDED PROFILES WITH REGULARLY VARIABLE CROSS-SECTION BELTS Russian patent published in 2019 - IPC E04C3/08 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to grid structure – truss. Truss consists of roll-welded profiles with belts of regular-variable cross-sections and includes a grid and belts assembled by paired channels with untwisted cuts of walls of the same initial roll-welded sections. Sections of channels have regular-variable width, which provides same regular-variable height of composite sections of belts, which values at constant width of sections of belts are determined by relationship 4(z/l-z²/l²)≤h_z/h_max, where z is coordinate of belt extreme support panels middle; l is truss span length; h_z – belt height in the middle of the same panels; h_max is maximum height of belt in middle of span.

EFFECT: reduced level of stress concentration.

1 cl, 10 dwg