Segmental hoisting process of ultra-large-span steel truss

Abstract

The invention discloses a segmental hoisting process of an ultra-large-span steel truss. The process includes the following steps that (1) vertical lifting devices of the steel truss are built; (2) the whole steel truss is divided into a plurality of sections, and each section of the steel truss is assembled on the ground; (3) the sections of the steel truss are placed on the corresponding vertical lifting devices respectively; (4) each section of the steel truss is sequentially lifted to a proper elevation and is fixed through a temporary fixing supporting device; (5) after measurement and collection are carried out, the sections of the steel truss are combined to form a whole aloft. The segmental hoisting process effectively solves the problem that installation is limited by conditions, is simple and convenient to operate, safe and reliable, guarantees installation safety and quality, and meanwhile is economical, reasonable and advanced in technique. Compared with a common large hoister hanging and spare part installation process, the segmental hoisting process is safe, convenient to achieve, economical and efficient.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a segmental hoisting process of a super-large-span steel truss. Background technique [0002] Super-long-span steel trusses are often used in heavy-duty industrial plants, stadiums, industrial pipeline corridors and other industries. The common method in on-site installation and construction is to use a crane to directly hoist the whole into place and segment hoist to close at high altitude. When the installation position of the steel truss cannot be hoisted directly by a crane due to the limitation of the site conditions, the traditional method is: set up a full house of scaffolding, and assemble the bars on the scaffolding on site. However, this traditional method consumes a long time and requires a lot of labor. The cross-sectional geometric dimensions, verticality, bending height, camber, and welding quality of the joints of the components are more difficult to ...

AI Technical Summary

Problems solved by technology

However, this traditional method consumes a long time and requires a lot of labor. The cross-sectional geometric dimensions, verticality, bending height, camber, and welding quality of the joints of the components are more difficult to control than those assembled on the ground.

[0003] Super-long-span steel truss structures usually have an overall span of more than 60 meters, and a single truss weighs more than 100 tons. At the same time, due to the limitations of on-site construction conditions, ordinary large-scale cranes cannot be used for hoisting operations

Images