| 摘要 |
FIELD: construction.SUBSTANCE: metal frame assembly for a low-rise building comprises a double-tee pillar, having alternating cross section by height within a lower floor, with paired horizontal symmetrical stiffening ribs at both sides of its wall, which are arranged in the plane of upper and lower shelves of a double-tee beam connected to the inner shelf of the pillar to form a cantilever. The free end of the cantilever in the area of least bending torques is connected by means of high-strength bolts with a crossbar, having a cross section corresponding to the cantilever section. Between horizontal stiffening ribs of the pillar there are ribs installed for connection of spacers to them, which are displaced from a neutral axis of cross section towards the outer shelf of the pillar and are installed in parallel to it. A vertical rib is welded to the inner shelf of the pillar and to the upper belt of the cantilever as arranged in the plane of cantilever walls and the pillar. The crossbar with the pillar cantilever is connected by means of flanges welded to their ends and protruding beyond the limits of their upper shelves, at the same time the crossbar and the cantilever are equipped with supporting ribs of their upper shelves and supporting ribs of their walls.EFFECT: reduced material intensity of a unit due to its higher stiffness.6 cl, 1 dwg |
