Grid structure for silo roof

Abstract

The invention discloses a net rack structure for a top of a cylindrical silo. The net rack structure comprises a silo top plate, a silo top plate reinforcing rib, net rack lower chords and net rack upper chords, wherein the silo top plate is used for bearing the dead load and live load of the top of the silo and the pressure of materials in the silo; the silo top plate reinforcing rib is fixed to the upper surface of the silo top plate, and two ends of the silo top plate reinforcing rib are connected with the net rack lower chords; the net rack lower chords are fixed to the upper surface of the silo top plate; the net rack upper chords are arranged above the net rack lower chords and connected with the net rack lower chords by virtue of net rack web members; net rack sphere joints are used for realizing connection between the net rack web members and the net rack upper chords, connection between the net rack web members and the net rack lower chords, connection between the adjacent net rack upper chords and connection of the adjacent net rack lower chords; the net rack lower chords are welded together with the silo top plate reinforcing rib and the silo top plate, so that a reinforcing shell structure is formed; the silo top plate can serve as lateral support for the net rack upper chords and the net rack lower chords; the net rack lower chords and the silo top plate reinforcing rib serve as reinforcing ribs of the silo top plate, so that the spatial stiffness and overall stability of the net rack structure are enhanced, and the structural stress is reasonable.

Description

technical field [0001] The invention relates to a grid structure, in particular to a grid structure for the roof of a silo. Background technique [0002] Due to its light weight, short construction period, low cost and good airtightness, steel silos are widely used in the storage of grain, cement, fly ash and other materials. The roof structure is an important part of the steel silo, and its structure has two types: grid structure system and truss structure system. Compared with the truss structure system, the grid structure system has the following advantages: [0003] 1. The grid structure is a space structure with multi-directional stress, and its height is small, which can effectively use the building space. The use of smaller rods can meet the large-span requirements of the large-diameter steel silo roof. [0004] 2. The space rigidity and overall stability of the grid structure are better than those of the truss structure, and it is a high-order super-statically inde...

AI Technical Summary

Problems solved by technology

[0008] 2. The rigidity of the roof of the warehouse is small. When the warehouse is full of materials, the roof of the warehouse will be seriously deformed under the pressure of the materials in the warehouse.

The two load-bearing systems are separated by the purlin support, and cannot be jointly loaded, forming a redundant structure, resulting in waste of materials

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