Spoke type double-layer cable truss structure and lifting method thereof

Abstract

The invention provides a spoke type double-layer cable truss structure and a lifting method thereof. The structure comprises a double-layer ring cable, a compression ring beam and a series of radial cable trusses arranged between the double-layer ring cable and the compression ring beam in a radial shape, wherein the double-layer ring cable comprises an upper ring cable and a lower ring cable; theradial cable trusses are triangular trusses and comprise upper radial cables, lower radial cables and masts; the inner side ends of the upper radial cables and the lower radial cables are connected with the upper ring cable and the lower ring cable through an upper ring cable clamp and a lower ring cable clamp respectively, and the outer side ends of the upper radial cables and the lower radial cables are anchored to the compression ring beam; and the masts are vertically arranged between the upper radial cables and the lower radial cables at intervals, and the top ends and the bottom ends ofthe masts are connected with the upper radial cables and the lower radial cables through radial cable clamps respectively. According to the spoke type double-layer cable truss structure and the lifting method thereof, the passive tensioning technology is adopted for tensioning the cable trusses, the key lower radial cables are selected as active tensioning cables, and other cables and rods are all passively tensioned. The spoke type double-layer cable truss structure is simple in structure, the tensioning technology is advanced, no complex joint exists, the problem that all active tensioningcannot be achieved in large-scale truss construction is effectively solved, the equipment and personnel capital is greatly saved, and the construction period is effectively shortened.

Description

technical field [0001] The invention relates to the technical field of lifting a spoke type cable truss, in particular to a spoke type double-layer cable truss structure and a lifting method thereof. Background technique [0002] The spoke-type cable truss is a kind of prestressed structural system, and its mechanism is similar to that of a bicycle wheel. It consists of a rigid outer ring under compression, which is connected to the inner ring under tension through radial radial cables. Due to the pre-applied tensile force on the cable and the pressure balance of the outer ring structure to jointly form the structural rigidity, the whole structure belongs to a self-balancing stress system, and only the vertical force transmission to the main structure is the bending moment, which has light shape, large space span, It has the characteristics of light weight and less steel consumption. [0003] At present, there are many problems in the construction of large-scale trusses. On...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a spoke-type double-layer cable truss structure and its lifting method, which solves the problem that there are complex nodes in the existing prestressed cable truss system, large-scale truss construction cannot realize all active tensioning, and not only a large amount of equipment needs to be invested and personnel, and the technical problems of long construction period and high cost

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