Truss-string structure with additional standby cables

Abstract

The invention discloses a truss-string structure with additional standby cables. The truss-string structure is composed of an upper truss, middle supporting rods, a lower inhaul cable, a supporting structure and the middle standby cables. The upper truss is a square quadrangular pyramid space arch truss which is composed of multiple upper chord members, lower chord members, diagonal web members and horizontal web members; the two ends of the lower inhaul cable are anchored at the ends of the upper truss; the multiple supporting rods are evenly arranged between the upper truss and the lower inhaul cable, and the top ends and the bottom ends of the supporting rods are connected with the lower chord members of the upper truss and the lower inhaul cable respectively; the two ends of the middle standby cables are connected with the lower chord members of the upper truss and the bottom ends of the supporting rods respectively; the supporting structure is composed of a fixed hinge support and a sliding hinge support which support the two ends of the upper truss respectively. Compared with a traditional truss-string structure, the redundancy rate of the truss-string structure with the additional standby cables is increased, and the progressive collapse resistance of the truss-string structure with the additional standby cables is improved. The truss-string structure is simple in structural form, convenient to construct, easy to realize and suitable for being applied to practical engineering.

Description

technical field [0001] The invention belongs to the field of large-span prestressed space structures, and relates to a string tension truss structure and a construction method for adding equipment cables. Background technique [0002] String trusses are mainly composed of flexible cables at the lower part and rigid trusses at the upper part. The cables are prestressed and anchored at both ends of the trusses. The stay cables and the trusses are connected by vertical struts. The structure is a self-balancing hybrid space structure, which can give full play to the tensile properties of high-strength materials, and has the advantages of reasonable force, light weight, simple structure, and strong space spanning ability. With the development of my country's construction industry and the improvement of architectural design level, the tension truss structure has received more and more attention, and is widely used in important public buildings with large spaces such as stadiums an...

AI Technical Summary

Problems solved by technology

[0003] The string truss structure has low redundancy. Once the lower cable breaks and the remaining structure is impacted, it will often collapse, resulting in heavy casualties and serious economic losses.

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