SU947340A1 - Building roof - Google Patents

Description

The invention relates to the construction and coatings of buildings and structures, the supporting structures of which are trusses, girders and floor slabs.

Building coatings are known that contain trusses from corners, channels from channels supported on them, and flooring plates 1 on them.

In the known building surface, the span of the girder is equal to the pitch of the trusses and the girder requires an increased consumption of metal. In addition, to ensure the sustainability of trusses in space, the installation of truss links is required, which also leads to additional metal consumption.

Closest to the offer is a building covering, containing trusses from the corners, supported on them with a cross-section of two channels, and the flooring plates 2 are laid on the purlins and attached to them.

In such a coating, the span of the trunnion is also equal to the pitch of the trusses, and to ensure the sustainability of the trusses in space, the installation of bonding elements is required, which leads to increased metal consumption.

The purpose of the invention is to reduce material consumption and increase stability. .

This goal is achieved by the fact that the floor of the building, including trusses, twin channel beams supported on them and laid on the floor girders, is equipped with flexible rods and struts, while the latter are hinged at the ends between the channels with the possibility of rotation, and with the other ends of the axle to the lower node of each truss and are interconnected in one 15 span of a flexible pull.

FIG. 1 shows a fragment of a building covering, axonometric; in fig. 2 - a fragment of a folding run from channels in the folded state;

20 in FIG. 3 - leaning strut folding fold on the lower nodes of the farm; in fig. 4 is a view of the girder with the cover truss, top view.

The covering of the building consists of trusses 1,

25 on which the runs 2 of two channels (Fig. 1) are supported, between which are located the cut-off struts 3 with the centers of rotation 4 (Figs. 2 and 1), propped on the lower nodes of the trusses (Fig. 3),

30a, the ends of the folding struts 3 are interconnected by a flexible pull 5, while the corners 6 of the lower truss (Fig. 3) are arranged upside down, on which the runners are supported at the trusses of the trusses, and bolted to the joints 7 of the trusses 1. 8 (Fig. 3J. Runs 2 are laid and attached to them flooring 9 (Fig. 1). The linking of the runs with the trusses can be made symmetrical (Fig. 4a) and alternately (Fig. 46) by supporting the runs to the left and right of the nodes farms

The features of the constructive solution to the covering of a building eliminate the need to install links for trusses: reduce the bending moments in the girders by more than 3 times to increase the structural assembly on the installation. The total metal consumption per coating is reduced by 10%.

The application of the invention is particularly effective in coatings of industrial buildings along a grid of columns with a truss pitch of 12 m.

Claims (2)

1. Belen E. and. and others. Metal constructions. M ,, Stroyizdat, 1973, p.361 fig. XIII.1. 2. Mukhanov K. K. Metal constructions, m., Stroyizdat, 1976, with. 263, fig. VII.12.a.