Large-span space suspended spoke type truss structure system and construction method

Abstract

The invention discloses a large-span space suspended spoke type truss structure system and a construction method, and relates to the technical field of civil engineering. The large-span space suspended spoke type truss structure system comprises a dome part, wherein the dome part comprises an upper structure and a lower structure; the lower structure is arranged below the upper structure; the upper structure comprises a central ring truss, a middle ring truss, an outer ring truss, an inverted triangular truss and a secondary truss; and the lower structure comprises an annular cable, a radial cable, a stabilizing cable and a supporting rod. The stability and the bearing capacity of the structure are enhanced, so that the span of the structure is increased, and the advantages of convenient construction, high structural bearing capacity, good stability and the like can be realized. A hydraulic synchronous sliding technology is adopted in construction, a counter-force frame can be abandoned, the reinforcing problem of a counter-force point is solved, time and labor are saved, rigid connection and synchronous control with a moved component are easy to achieve, and the in-place precisionis high. A lower part is composed of the annular cable and the radial cable, a prestressed cable is tensioned by adopting a two-stage cyclic tensioning method, the annular cable is a passive tensioning cable, and the radial cable is an active tensioning cable.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a large-span space suspend-supported-spoke truss structure system and a construction method. Background technique [0002] In recent years, with the rapid development of my country's economy and technology, the structural adjustment of the construction industry and the acceleration of technological transformation, people have gradually put forward higher requirements for buildings such as excellent performance, beautiful shape, and large coverage space; The quantity and specifications have also been greatly improved, which not only provides the basic conditions for the country to hold various sports competitions, but also greatly promotes the application and development of large-span spatial structures. [0003] At present, the basic structural types commonly used in large-span spatial structures include grid structure, reticulated shell structure, suspension cable struc...

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Problems solved by technology

[0004] At present, the domestic research and application of suspen dome structure is mainly concentrated in the span of 150m. The stiffness of the upper single-layer reticulated shell of suspen dome structure is small. As the span increases, the structural stability will decrease, and the difficulty of prestressed construction will increase. The self-weight of the structure will increase significantly; if the upper structure is replaced by a double-layer reticulated shell with higher rigidity, the cost will be higher and the construction process will be complicated; and the use of a cable dome structure with a span of up to 200m will increase the difficulty of design and construction

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