Construction method for hanging wide span arcuated open-web beam

Abstract

The invention relates to a large-span arc laced beam hoisting construction method used for constructing an ellipsoid roof. The method comprises the steps that a main crane hoists in a stand-alone way at one side beyond the span and delivers the laced beam to be within the span, one end of the laced beam is hoisted by an assistant crane beyond the span at the other side of a building, and dual-machine lifting and hoisting is formed by hoisting point shifting on the laced beam so as to jointly hoist and position the laced beam. The invention is a brand new dual-machine delivering lifting and hoisting construction method, and solves the hoisting problem of the large-span steel structure laced beam under special conditions that a construction field can not be provided within the span of the building, the dual-machine lifting and hoisting can not be carried out due to the obstruction of the running line of the cranes at the two sides of the building, and a gliding method can not be used for hoisting, etc., and the span of a hoisting structural component can be greatly improved, thus improving construction safety, guaranteeing construction quality and shortening construction period.

Description

technical field [0001] The invention relates to a structure installation construction technology in the building construction process, in particular to a large-span arc-shaped vierendeel beam hoisting construction method. Background technique [0002] At present, steel structure engineering in the domestic construction industry is developing rapidly, and more and more buildings are being designed and constructed with long-span spatial structures. According to the requirements of the development of space structure engineering, there is an urgent need to have corresponding structure installation and construction technology. For large-span steel structure vierendeel beams, the current hoisting methods can be summarized as follows: 1. Overall span-outside single-machine hoisting method; 2. Overall span-inside single-machine hoisting method; 3. Overall span-outside or span-inside double-machine hoisting method; 4. 5. Span-inside segmental hoisting and high-altitude assembly meth...

AI Technical Summary

Problems solved by technology

[0003] The single-machine hoisting method outside the overall span may not be able to be hoisted in place in the case of a large-span building and the crane capacity is limited; the single-machine or double-machine hoisting method inside the span requires a site suitable for the crane station and component placement within the span The double-machine lifting method outside the span also requires an assembly and placement site for the suspended components within the span, or requires that there be no obstacles on the route of the crawler crane; There are temporary support points and a site for assembly and storage of components, and there are disadvantages such as high-altitude operations, poor installation accuracy, and long installation cycle; the cumulative sliding installation method is only suitable for the installation of components on the horizontal surface, and for vertical surfaces. (such as the installation of vierendeel beam members on ellipsoidal roofs), this method is not applicable

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