Horizontal curve prestress device of hollow large cantilever structure

Abstract

The invention relates to a horizontal curve prestress device of a hollow large cantilever structure. The horizontal curve prestress device arranged above a neutral axis of the hollow large cantilever structure comprises a horizontal curved cable, straight cables, annular cable clamp nodes, straight cable clamp nodes, inclined cable clamp nodes and tension end nodes; and the horizontal curve prestress device is characterized in that the horizontal curved cable is a non-closed curve, two ends of the horizontal curved cable are connected with the straight cables, the straight cables are arranged in the tangential direction of the end points of the horizontal curved cable and extend to the non-cantilever position of the hollow large cantilever structure from the end points of the curved cable, the tension end nodes are arranged to be connected with the hollow large cantilever structure, the curved cable is provided with the annular cable clamp nodes to be connected with the hollow large cantilever structure, the straight cables are provided with the straight cable clamping nodes to be connected with the hollow large cantilever structure, the inclined cable clamping nodes are arranged at the intersection points of the straight cables and the curved cable and are connected with the hollow large cantilever structure, the straight cables and the curved cable can slide in the cable clamp nodes in the tensioning process, the annular cable clamp nodes, the straight cable clamp nodes and the inclined cable clamp nodes are welded with the hollow large cantilever structure without relative deformation, and the tensioning end nodes are arranged at the end points of the straight cables.

Description

technical field [0001] The invention relates to a space structure assembly, in particular to a horizontal curve prestressing device of a hollow large overhang structure. Background technique [0002] In the prestressed steel structure, in order to improve the vertical stiffness of the structure, stay cables can be used, and the lower ends of the stay cables are pulled to the lower point of the structure; vertical non-closed curved cables can also be used, and the curved cables are arranged at the lower part of the steel structure. The struts are connected to the steel structure; closed horizontal curved cables can also be used, and the stay cables or struts are connected to the steel structure in the normal direction of the curved cables. With the development of economy, the architectural modeling of buildings, especially long-span space structures, tends to be more novel and complex. For the hollow large cantilever structure produced for the realization of architectural mo...

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Problems solved by technology

[0003] For large hollow cantilever structures, it is not possible to set linear prestressed cables to transmit the load to the non-cantilevered position of the structure, and the non-prestressed steel structure is used, and the cantilevered position is difficult to meet the safety requirements of bearing capacity and vertical stiffness. Due to the problem of large component cross-section and high structural cost, the invention proposes a horizontal curved prestressing device, which can effectively transfer the load of the cantilevered structure at the hollow position to the non-cantilevered position of the structure, fully utilize the advantages of the prestressed rigid structure, and improve the cantilever Structural bearing capacity and vertical stiffness, to meet architectural modeling requirements, reduce project cost, while ensuring the reliability and safety of the structure

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