| 摘要 |
FIELD: building, particularly load-bearing structure of different buildings and building structures. ^ SUBSTANCE: beam comprises main frame composed of upper and lower belts and stiffening ribs arranged in-between, side walls of corrugated thin sheets connected with the frame so that corrugations of the sheets extend along longitudinal beam axis. Beam also has reinforcing ribs extending along longitudinal beam axis and arranged in side wall corrugations. The reinforcing ribs have flanges unconnected with stiffening ribs and belts along the full beam length or in beam zones characterized by maximal stresses. ^ EFFECT: increased load-bearing reliability, rigidity and stability in plane of flexure. ^ 2 cl, 4 dwg |
