RU1812284C - Light buildings beam roofing - Google Patents

Abstract

Usage: for light industrial and civil buildings, the frame of which is made of hot-rolled conventional and wide-shelled beams. The building has a longitudinal frame of a continuous beam with columns pivotally connected to it, horizontal forces in which receive communications in the plane of the columns. The transverse frame conventionally represents a continuous beam with a rigid seal to the columns of the extreme rows and a hinged seal to the columns of the middle rows. In each span, the inclined rafter beams are connected by puffs, and between the spans, by horizontal beams, which create the continuity of the system. Between the axes of the puff and the beam there is an eccentricity reducing the bending moment in the rafter beam. The pitch of the rafters is determined by the bearing capacity of the profiled flooring. A false ceiling device is possible. Columns of extreme rows perceive horizontal loads in the transverse frame. Zil. Yo

Description

The invention relates to construction and can be used for the construction of industrial, public, agricultural buildings, including greenhouses.

In order to eliminate these drawbacks, it has been proposed to use hot-rolled, low-alloyed rafter beams in the arches of the transverse frame, which are combined into a continuous system that creates stability and strength of the supporting frame of the building.

The goal is achieved in that, in each span of the building, arches with straight lines connected by a puff are connected by horizontal beams installed on the outside of the coating, at a mark above the puff adjoining node to the arch of the arch. The puffs are located higher

arch supports, the extreme horizontal beams are connected to the external supports, and the intermediate beams are connected along adjacent arches. This creates the invariability and continuity of the coating in the cross section of the building and significantly reduces the calculated bending moment in the sections of the straight along two- or three-hinged arches, which makes it possible to use hot-rolled low-alloyed beams for them effectively. The rectilinear arches are supported on the rafters of the columns, the sub-rafter continuous continuous-beam or welded beams pivotally connected to the columns, which have separate communication panels. The end-row columns receive bending moment from the coating elements. In the extreme spans from the intermediate arches the moment

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it is transmitted to the sub-rafter beam and half-timbered racks or to the sub-rafter beam and the parapet panel.

Figure 1 shows a fragment of the cross section of the building, where the rectilinear arches - 1 - contain a puff - 2 and are connected by horizontal beams - 3. They are fixed to the rafters - 4, which are supported on the extreme columns - 5 or on the middle columns rows - 8. An anti-aircraft lamp - b and corrugated board and roof - 7 are installed on the upper beam rails. The suspension has a suspension - 9, and parapet panels - 10, to which horizontal beams are fixed, are installed on the main columns of the extreme rows.

Figure 2 shows the assembly adjoining the arch of the puff and the horizontal beam, where the reinforcement of the arch in the zone of greatest bending moment is 11 nodal shape of the puff - 12. beam of the crane - 13.

Fig. 3 shows a fastening assembly along an arch and a horizontal beam to a truss continuous beam.

An example is a multi-span building with a grid of columns 24x12 m with a step of building structures through 4 m with a load of 220 kg / sq.m.

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According to the arch I-beam 30. The horizontal beam is the I-beam 20. The truss beam is wide-strip with a height of 90 cm, puff two corners - 60x6. made of steel 10.G2S1. Steel consumption amounted to 18.2 kg / sq.m at a cost of 320,350 rubles. per ton.

The metal consumption in this example is reduced in comparison with the known beam coatings by 1.5 times, in comparison with coatings from Molodechno trusses - by 1.4 times while reducing the cost of manufacturing structures by 2 times, transportation costs - by 3 times.

Claims (1)

SUMMARY OF THE INVENTION Beam coating of light buildings, including arches installed above each span on supports with a straight line, connected by a puff, characterized in that, in order to reduce metal consumption and labor intensity, it is equipped with horizontal beams, each of which is installed on the outside cover, at a mark above the assembly of the puff adjoining the arch, and the puffs are located above the supports, the extreme horizontal beams being connected to the external supports, and the intermediate beams connected to adjacent arches, Fae. 2