Large-span truss subsection hoisting high-altitude closure measure device and construction method

Abstract

The invention discloses a large-span truss subsection hoisting high-altitude closing measure device and a construction method. The measure device comprises a plurality of bracket units and a support platform; each bracket unit is composed of a U-shaped groove, two support columns and two flange plates I; the support platform is of a rectangular frame structure and is composed of a plurality of stand columns, a cross beam and support columns; each bracket unit is arranged at the top end of the support platform through two adjusting columns and arranged on a cross beam or a connecting beam in the length direction of the support platform; a plurality of flange plates III corresponding to the bracket units are arranged on the upper surface of the cross beam or the connecting beam in the lengthdirection of the top end of the support platform; flange plates II are arranged at the two ends of each adjusting column; the flange plates II at the top ends of the adjusting columns are correspondingly and fixedly connected with the flange plates I at the bottom ends of the supporting columns; and the flange plates II at the bottom ends of the adjusting columns are correspondingly and fixedly connected with flange plates III arranged on the upper surface of the support platform top beam or connecting beam. The device is high in utilization rate, the butt joint precision of truss main pipesis improved, and the safety of the truss unloading construction process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of building steel structure construction, and particularly relates to a high-altitude closing measure device and a construction method for segmented hoisting of a large-span truss. Background technique [0002] Large-span trusses are generally suitable for large-scale venues, theaters and other buildings. Due to the long length of large-span trusses, they can only be produced in pieces or in sections in the steel structure processing factory, and then a large amount of support is required for installation at the construction site. The tire frame and a large number of high-altitude operations have a very negative impact on the quality, construction period and safety. Later, it was assembled on the ground and then hoisted, and the method of hoisting the two machines outside the venue as a whole or hoisting in sections in the venue was generally used. However, when the space outside the venue was limited, the o...

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Problems solved by technology

[0004] However, for trusses with special shapes or a certain slope, the existing high-altitude closing device is not only complicated to install and high in cost, but also has low butt joint accuracy of the main pipes of long-span trusses, and there are many unsafe factors in the unloading process after the hoisting is completed.

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