Carbon fiber cable reinforced spoke type cable truss structure

Abstract

The invention relates to the field of large-span stadium awning structures, in particular to a carbon fiber cable reinforced spoke type cable truss structure. The spoke type cable truss structure comprises a radial cable truss, an inner pull ring and an outer pressing ring, wherein the inner pull ring and the outer pressing ring are arranged at the two ends of the radial cable truss. The radial cable truss is composed of an upper radial cable, a lower radial cable and cable truss supporting rods, the inner pull ring is composed of an upper ring cable, a lower ring cable, a ring cable supporting rod and an inner ring cross cable, and the inner ring cross cable is a carbon fiber cable. According to the carbon fiber cable reinforced spoke type cable truss structure, the carbon fiber cross cable is additionally arranged in an inner ring cable plane of the spoke type cable truss structure; after the improvement, the vertical rigidity of the spoke type cable truss structure is greatly enhanced, and the response is obviously reduced under the action of wind loads and the like. The carbon fiber cable is small in section and rigidity, the influence on the inner pull ring cable force is small, the cable clamp unbalanced force can be remarkably reduced, the cable clamp structure is simplified, and therefore the problem that the cable clamp bearing capacity is insufficient is solved without additionally arranging balance cables.

Description

technical field [0001] The invention relates to the field of large-span stadium canopy structures, in particular to a spoke-type cable truss structure reinforced with carbon fiber cables. Background technique [0002] In sports buildings such as football fields and track and field fields, spoke-type cable truss structures are often used as the structural form of their roofs. The spoke-type cable truss structure is mainly composed of a radial cable truss, an inner pull ring and an outer pressure ring 07. The radial cable truss is composed of upper radial cable 01, lower radial cable 02 and cable truss strut 03; the inner pull ring is composed of upper ring cable 04, lower ring cable 05 and ring cable strut 06, and its function is to balance , Lower radial cable tension. The outer pressure ring 07 is used to bear the tension of the cable truss and transmit the roof load to the substructure (such as figure 1 and figure 2 shown). The cable truss struts 03 are connected wit...

AI Technical Summary

Problems solved by technology

If steel cables are used for the cross cables of the inner pull ring, a large weight will be added to the cantilevered end of the structure first, which is unfavorable to the structural design

Secondly, the large elastic modulus of the steel cable will cause the uniformity of the internal force of the upper and lower ring cables to deteriorate, and the obvious difference in the internal force of the adjacent grid ring cables will generate a large unbalanced force on the cable clamp between the grids

This unbalanced force is quite unfavorable to the structure. Under a large load, the bearing capacity of the cable clamp cannot even meet the requirements of the unbalanced force. Complicated measures such as balancing cables must be added to resist the above-mentioned excessive unbalanced force.

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