Cable-held truss structure with height-adjustable point

Abstract

The invention discloses a cable-held truss structure with a height-adjustable point. The cable-held truss structure with the height-adjustable point comprises a rigid truss, and a pull cable arrangedunder the rigid truss. The pull cable is connected with a lower boom of the rigid truss through a height-adjustable pull cable node; the height-adjustable pull cable node comprises a telescopic adjustable assembly and a pulley; the pulley is rotatably connected to one end of the telescopic adjustable assembly; the other end of the telescopic adjustable assembly is fixedly connected with the lowerboom of the rigid truss; the pulley clings to the pull cable; and the space between the rigid truss and the pull cable can be freely adjusted through the telescopic adjustable assembly. Compared witha traditional rigid truss structure, the cable-held truss structure with the height-adjustable point provided by the invention gives full play to the high strength characteristic of the pull rope, theconsumption of materials is saved on the premise of satisfying the characteristics of transparent and attractive appearance and stress reasonability of a traditional truss structure, larger-span structure crossing can be realized, and an abundant shape requirement of a building is met favorably.

Description

technical field [0001] The invention belongs to the technical field of building structure engineering, in particular to a cable support truss structure with height-adjustable points. Background technique [0002] The truss structure is a structural form with a long history. The ancient Romans used trusses to build the Tre River Bridge across the Danube. During the Renaissance, Italian architects (Palladio Palladio) also began to use wooden trusses to build bridges. With the continuous growth of steel production, steel trusses are being used more and more widely, and are widely used in public buildings such as industrial plants, exhibition halls, stadiums and bridges. The Moscow Equestrian Gymnasium designed and built by Beta Kru in 1818 is the earliest recorded long-span truss structure, with a span of 50 meters, far exceeding the conventional buildings of the same period. The Firth of Forth Railway Bridge, built in 1890, is a masterpiece of that era. It is the second longe...

AI Technical Summary

Problems solved by technology

However, there are also disadvantages for the concave truss. Under the load, the axial tension of the lower chord of the concave truss is much larger than that of the convex truss and the straight truss, and the mid-span deflection is relatively large, which is not conducive to the realization of such a lower truss. Concave and large-span building shape requirements

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