TRAPEZOID-SHAPED SUPPORT WITH CONTROL OF OPERATING MODE Russian patent published in 2016 - IPC E21D11/14 

FIELD: construction.

SUBSTANCE: invention relates to fastening openings of trapezoidal-section metal frame supports of special profile for underground works. Trapezoid lining with control mode, including two straight racks and beams connected to frame by two rounded elements with straight sections at their end nodes compliance with limiters. To increase bearing capacity of lining, due to impact on horizontal array beams, pressure caused by hingeless connection counters and ends frame nodes beams vertical and horizontal compliance lining elements with rounded radius of not more than 0.5-0.7 m, which have at their ends straight sections of equal vertical and horizontal compliance lining project and amount of overlap in nodes of compliance with limiters, excluding offset them from design position. Stable operation is provided of lining in operation pliable and smooth transfer of its work in hard mode with exhaustion of project compliance lining, due to increase of friction forces and crushing material mating components are mounted on contact began bends rounded areas with elements of compliance units.

EFFECT: technical result is to increase carrying capacity of frames of trapezoidal lining.

1 cl, 2 dwg