A lifting method for long-span solid-web curved beams

Abstract

The invention discloses a lifting method for a large-span solid-web arc beam. The lifting method comprises the steps that a, an assembly jig frame is arranged under a lifting unit and assembles the arc beam into the lifting unit; b, a horizontal inhaul cable is arranged at the two ends of the arc beam and penetrates out of the assembly jig frame, and the two ends of the horizontal inhaul cable are connected with the two ends of the arc beam respectively; c, a main structure above the lifting unit is provided with a vertical lifting tool. According to the lifting method, the horizontal inhaul cable and a vertical inhaul cable are arranged; the vertical inhaul cable facilitates lifting operation of the arc beam, and the arc beam can be lifted to be attached to the lower wing edge of the main structure through the simple structure and the convenient and fast operation; the horizontal length of the whole arc beam can be adjusted through tensioning due to the horizontal inhaul cable.

Description

technical field [0001] The invention relates to a lifting construction method of an arc beam, and is especially suitable for the lifting method of a large-span solid web type arc beam. Background technique [0002] At present, steel structure engineering in the domestic construction industry is developing rapidly, and more and more buildings with long-span spatial structures are being designed and constructed. 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 long-span steel structure solid-web curved beams, the existing hoisting method is usually to assemble them into a group of 4 structural units on the ground during construction, and then lift them up as a whole for installation. [0003] The main disadvantages of the existing hoisting and lifting methods are: many high-altitude operations, poor installation accuracy, difficulty in maintain...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantages of the existing hoisting and lifting methods are: many high-altitude operations, poor installation accuracy, difficulty in maintaining the arc of the arch, and long installation period. Large-scale hoisting machinery is required for installation, and it takes a long time to erect high supports in the existing construction technology, and it is easy to cause out-of-plane instability when lifting or hoisting a single solid-belly arc-shaped steel beam, which poses a high safety risk; in addition, the hoisting construction The environmental requirements are strict. During the lifting stroke, it is necessary to ensure that there are no obstacles interfering with it. The construction restrictions are relatively strict, and the size of the curved steel beams is strictly limited.

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