Fabrication and assembly process of integrally prestressed total-assembled box type modular trestle

Abstract

The invention relates to a fabrication and assembly process of an integrally prestressed total-assembled box type modular trestle, which belongs to the technical field of belt conveyer gallery steel trestles, the solved technical problem is to provide the fabrication and assembly process of the belt conveyer gallery steel trestle, and the belt conveyer gallery steel trestle is easy to fabricate, has stable quality, and is suitable for long spans. The adopted technical solution includes: (step 1) a hoisting and assembly site has to be even and compacted; (step 2) at least two box-shaped modules are sequentially hoisted onto skids section by section, and each two neighboring sections of box-shaped modules are fixedly connected; (step 3) primary prestress tensioning is carried out under a bottom plate of a single-span trestle; (step 4) the single-span trestle is hoisted onto articulated bearings of trestle supports and temporarily fixed; (step 5) a plurality of single-span trestles are repetitively assembled and fixedly connected in pairs to form an integrated multi-span trestle; (step 6) secondary prestress tensioning is carried out for the top plate of the integrated multi-span trestle; (step 7) the secondarily prestressed integrated multi-span trestle is inspected and accepted. The fabrication and assembly process of the integrally prestressed total-assembled box type modular trestle is applied to belt conveyers.

Description

technical field [0001] The invention relates to a manufacturing and assembling process of an integrally prestressed and fully assembled box-type modular steel trestle, which belongs to the technical field of steel trestles for belt conveyor corridors. Background technique [0002] The existing belt conveyor corridor steel trestle is manufactured using two methods: the overall construction of the ground on the construction site and the high-level piece (scattered) assembly. There are two types of rods and steel ball joint steel pipe rods. The main disadvantages are: large amount of work on the construction site, complicated manufacturing process, long construction period, unstable quality, and large temporary land occupation; the enclosure structure and the stressed structure cannot work as a whole; The unit steel consumption is relatively large; the steel trestle structure is simply supported, and the working deflection and deformation are large, which is not suitable for l...

AI Technical Summary

Problems solved by technology

The main disadvantages are: large amount of work on the construction site, complicated manufacturing process, long construction period, unstable quality, and large temporary land occupation; the enclosure structure and the stressed structure cannot work as a whole; The steel consumption per unit is large; the force structure of the steel trestle bridge is simply supported, and the working deflection is large, so it is not suitable for large spans

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