Eccentric annular large-cantilever prestressed steel structure system and construction method thereof

Abstract

The invention provides an eccentric annular large-cantilever prestressed steel structure system. The system comprises a roof structure layer, a floor structure layer, interlayer connecting supports, prestressed inhaul cables, concrete core cylinders, a conversion truss, large-cantilever reinforcing inclined struts, cable-steel connecting joints and floor supporting plates. The eccentric annular large-cantilever prestressed steel structure system is characterized in that the component arrangement of the roof structure layer and the component arrangement of the floor structure layer are consistent with the axes of the concrete core cylinders, and the roof structure layer and the floor structure layer are both arranged in an orthogonal mode; the lower concrete core cylinders are symmetrically arranged on the two sides of the structure, and the four main cantilever giant trusses are formed by connecting main cantilever components of the roof structure layer and the floor structure layer, the interlayer connecting supports between the prestressed steel inhaul cables and the main cantilever components, the conversion truss, the large-cantilever reinforcing inclined struts and the like at the axes of the concrete core cylinders and serve as main vertical force transmission structures; the roof structure layer and the floor structure layer are connected through the interlayer connecting supports, and the floor structure layer is connected with the concrete core cylinders through the conversion truss; and external prestressed steel cables at the cantilever ends are arranged on upper chords of the roof structure layer and anchored to upper chords of the floor structure layer in a space cable arrangement mode, and vertical and inclined components are not arranged between the roof structure layer and the floor structure layer except for inner rings, outer rings and the interlayer connecting supports at the concrete core cylinders.

Description

technical field [0001] The invention belongs to the field of building steel structures, and relates to an eccentric annular large cantilever prestressed steel structure system and a construction method thereof. Background technique [0002] With the continuous development of modern people's aesthetics, the development of architectural theory is changing with each passing day. Under the unremitting innovation of architects, architectural shapes are constantly being introduced, breaking through traditions, and many buildings with different shapes have appeared. Steel structures have high strength, light weight, With the advantages of good overall rigidity, strong deformation ability, good weldability, and strong plasticity, it has become the first choice for building complex modern buildings. For large cantilever structures, under the action of the structure's own weight, the displacement of the cantilever end is large, and the vertical load and vertical seismic action are the...

AI Technical Summary

Problems solved by technology

If the conventional cantilever structure is adopted, the structure will have a heavy weight, and the structure will be too bulky to achieve the architectural effect, and the internal space of the building will be equipped with vertical and horizontal diagonal bars, which cannot meet the use requirements of the large space inside the building.

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