SU66334A1 - Lattice wooden arch - Google Patents

Description

A feature of the proposed arch design is the installation of cross-braces of the panel in a continuous series over the entire width of the arch or in groups in the form of arches. The braces rest with their ends on the lower and upper girders, interconnected by threads.

FIG. I shows a view of a half-span of a wooden trellis arch; n FIG. 2 - the arch in a section on L- / 1; in fig. 3 - the arch in the section noi BB; in fig. 4 - arch in section along bb; in fig. 5 - detail of the connection of the elements of the arch.

The main elements of the saoda are bracing, working, compression, and stretching. The girders are laid with floor boards of poles or boards.

The drawing shows a 48m long span with an 8m lifting boom. Strut supports (yes consist of two rows of piles L of which one row is vertically packed, the second one is inclined. Nozzles 2 are mounted on top of the piles with spikes on which stacked Layers 3 over the entire width of the arch. Legs are nailed to the nozzles with pins. The ends of the supporting elements 4 of the vault rest against the middle bars and are crimped by double fights 5. These fights are also nailed with the pins to the rails. All diagonal braces 6 of the vault have the same length and abut their ends in the girders of the 7th set. The bottom and bottom girders are mounted between each other by strings 8 located along the radii of the arch after 0.5 m along the lengths of the girders (see Fig. 4). At the crossroads of the braces 6, pair fights were set I bolted. places skreshizani close to each other across the entire width of the arch.

The upper girders 7 abut the struts in the form of a solid log flooring W, and the girders abut against the lower girders installed at 0.5 m. Under the flooring 10, the pastes 12 are laid to support the backfill.

The order of the arch is as follows. First of all, the supports are placed under the lower nodes of the arch. Then, the supporting elements 4 and the bracing of the panels are installed. Assembly need; but to lead simultaneously from both ends from the supports to the middle. The vault should be made simultaneously not across the syringe, but in separate parts, closing each part separately in the key. At heights of more than 4 m, frame or cell supports are recommended. Simultaneously with the braces, radial mounts with bolts and lateral races are placed. After the closure of the vault in the key it is rolled out. Unruly deformations of the vault are usually insignificant, and therefore the construction rise should be given on the basis of considerations of running in the nodes.

The proposed design can be used in industrial and civil construction to bridge significant spans.

Subject invention

A wooden trellis arch, characterized in that the cross-braces of each panel are installed in a continuous row (close to each other at the crossing points) across the entire width of the arch or in arch-shaped groups with their ends connected to the lower and upper runs connected to each other spacers or m.

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