| 摘要 |
building constructions, in particular, covering constructions of buildings and structures, applicable as separately standing special-purpose bearing systems, for example, as cross-bars of rigid transverse beams of electrified railways. SUBSTANCE: the prestressed trussed girder comprises a girder- cross piece, tie beam, truss posts and tightening devices, the truss posts are inclined to the axis of the girder-cross piece at angles whose cosines are proportional to the ordinates of the envelope of shearing forces, and junction shoes with forked supports, central bolts and locking dowels provided with annular members are installed on their ends. EFFECT: enhanced stiffness and stability at an action of non-equilibrium loads, and as a result, reduced specific consumption of materials. 4 dwg |
