METAL BEARING STRUCTURE OF COVER Russian patent published in 2009 - IPC E04B7/00 

FIELD: construction.

SUBSTANCE: invention is related to construction. Structure comprises low-inclined beam of alternate stiffness with two sloping surfaces, which rests on sections with higher stiffness on cross braces with creation of cantilevers, ends of which are connected to upper ends of pillar sections. Lower ends of cross braces and pillar sections are connected in units of structure support on columns and are tightened by bracing. Variation of beam stiffness along length is carried out with account of optimal distribution of internal forces. Selection of lengths and sizes of alternate stiffness sections makes it possible to achieve optimal distribution of bending moments in beam, and angle of cross brace incline and pillar sections height provides for optimal distribution of longitudinal forces in beam, struts and bracing. Moreover, stiffness is increased in structure by pre-stressing realised by adjustment of pillar sections and bracing lengths.

EFFECT: reduction of costs for manufacture, transportation and operation of structure.

2 cl, 3 dwg