SU838020A1 - Metal framework of multistorey,multispan building - Google Patents

Description

The invention relates to the construction and can be used in the construction of multi-storey multi-span buildings.

Known metal frame of a multi-storey multi-span building, ⁵ including racks and beams rigidly interconnected flj ·

The disadvantages of this frame are increased metal consumption, the complexity of installation. ¹⁰

The closest technical solution to the proposed one is the metal frame of a multi-storey multi-span building with hinged coupling of centrally compressed struts and beams ^{5 of the} I-beam f2j profile.

The disadvantage of this frame is the increased metal consumption on the beams due to their work according to the split scheme

The purpose of the invention is the reduction of metal.

This goal is achieved by ensuring that in the metal frame of the multi-storey multi-span building, including centrally compressed struts and articulated beams of the I-beam profile, the beams of adjacent spans are rigidly interconnected by shelves and walls through the walls of the struts, while in the latter at the level of the lower shelves of the beams made vertical slots.

Figure 1 schematically shows the frame of a multi-storey multi-span building; figure 2 - node I in figure 1; in Fig.3 - section aa in Fig.2.

The metal frame of a multi-storey multi-span building includes centrally compressed main columns 1, columns 2 and beams 3, made of an I-beam. The rack 2 has in the wall 4 vertical slots 5 at the level of the lower shelf 6 of the beam 3. The beams 3 are rigidly interconnected by the shelves 6 and 7 and the walls 8 through the walls 4 of the racks 2.

The work of the frame is as follows.

z 838020

When loading the frame with vertical loads, the beams 3 work in continuous form. At the same time, the racks 3 are the upper shelves 7 of the beams 3, uncoupled from the plane. In case of uneven loading, especially with alternating floor-and-floor loading, in the places where the beams 3 are attached to the racks 2, the section of the beams 3 is rotated.

Due to the presence of slots 5 in:; the walls of the 4 racks 2 bending moment from turning the section of the beam 3 to the rack 2 is practically not transmitted. Together with the lower part of the beam 3, the section of the wall 4 of the rack 2 between the slots 5 moves, and the rest of its sections are not deformed.

Thus, the hinged mounting of the beams 3 to the uprights 2 is ensured when the beams 3 are continuously connected to each other.

The invention allows to reduce the metal consumption of the frames while maintaining a simple design scheme.

Claims (2)

The invention relates to the construction and can be used in the construction of multi-storey multi-span buildings. The metal frame of a multi-storey multi-span building is well-known, including racks and beams, Dj rigidly connected to each other. The disadvantages of such a frame are increased metal consumption, installation capacity. The closest technical solution to the present invention is a metal frame of a multi-storey multi-span building with hinged conjugation of centrally compressed struts and an I-beam profile 23. The disadvantage of such a frame is the increased metal intensity of the beams due to their split diagrams Purpose of the invention - reduction of metal intensity . This goal is achieved by h. Metal frame of a multi-storey multi-span building including centrally collapsed struts and I-beam beams hinged to them, beams of adjacent spans are rigidly interconnected by shelves and walls through the walls of racks, while in the latter at the level of lower shelves of beams vertical slots are made. Fig. 1 schematically shows the frame of a multi-storey multi-span building; figure 2 - node I in figure 1; on fig.Z - section aa in figure 2. The metal frame of a multistory multi-span building includes centrally compressed main columns 1, pillars 2 and beams 3 made of an I-shaped profile. The rack 2 has in the wall 4 vertical slots 5 at the level of the lower flange 6 of the beam 3. The beams 3 are rigidly interconnected by the shelves 6 and 7 and the walls 8 through the walls of the 4 racks 2. The operation of the frame is as follows. 3 When loading the frame with vertical loads, beams 3 work according to a continuous scheme. In this case, the pillars 3 are upper rails 7 of the beams 3 that are out of the plane. When uneven, especially when alternating with floor-by-floor loading, the sections of the beams 3 rotate at the pillars 2 where the beams 3 are attached. Thanks to the presence of slots 5 in the i walls 4 legs 2, the bending moment from the rotation of the cross section of the beam 3 to the support 2 is practically not transmitted. Along with the lower part of the beam 3, the section of the wall 4 of the rack 2 between the slits 5 is moved, and its remaining sections are not deformed. Thus, a spherical fastening of the beams 3 to the uprights 2 is ensured, with the continuous connection of the beams 3 to each other. The invention makes it possible to reduce the metal intensity of the cages while maintaining a simple design scheme. Claims of Invention A metal frame of a multi-storey multi-span building comprising centrally collapsed racks and I-beam beams hinged to them, characterized in that, in order to reduce metal consumption, the beams of adjacent spans are rigidly interconnected by shelves and walls through the walls of racks, while level of the lower beams of the beams are vertical slots. Sources of information taken into account in the examination 1.Belene E.I. and others. Metal constructions. M., stroiizdat, 1976, p.223, p. VII1.24. 2. Streletsky N.S. Metal constructions. M., Gosstroyizdat, 1961, p. 354, p. IX.29. h bv .: //// 7 / W w / y // //// // Y Fi & .1