Beam string structure

Abstract

The invention discloses a beam string structure. A plurality of short inhaul cables are evenly and respectively arranged between two face structures, the short inhaul cables are slantly arranged relative to supporting rods, the upper ends of the short inhaul cables are hinged to upper string beams, and the lower ends of the short inhaul cables are fixedly connected to the lower ends of the supporting rods. According to the beam string structure, using times of the short inhaul ropes are increased, and after lower string inhaul cables lose effectiveness, due to the connection relationships between the short inhaul cables and the upper string beams, and the short inhaul cables and the supporting rods, the whole structure cannot lose effectiveness immediately, anti-collapse performance is improved, continuous collapse can be prevented from occurring, and potential safety hazards are eliminated. Meanwhile, if one lower string inhaul cable loses effectiveness, due to the existence of the short inhaul cables, the phenomenon that the plane of the beam string structure is unstable outside or other damage forms due to structural eccentricity occurs cannot exist in the whole structure.

Description

technical field [0001] The invention relates to a tension beam structure, belonging to a building structure. Background technique [0002] At present, there are more and more applications of long-span steel structures in the field of civil engineering. However, with the increase of the span, the self-weight increases sharply, and the structure faces the contradiction of the mutual restriction of the use function, design rationality and economic indicators. In order to meet the function of the structure and reduce the structure's own weight to improve the rigidity of the structure, prestressed string beams equipped with cables are more and more used in long-span steel structures. Through the arrangement of prestressed cables and struts, the bearing capacity and stiffness of the long-span steel structure have been greatly improved. [0003] Such as figure 1 As shown, the existing string beams include a pair of upper string beams 1 (or arches or trusses), several pairs of st...

AI Technical Summary

Problems solved by technology

At this time, if a lower string stay cable 2 breaks during use, the center of gravity of the entire string beam structure will shift, and the situation of toppling to one side will appear. At the same time, if a lower string stay cable 2 breaks, it cannot be The arch support provides horizontal tension, and the support may move to both sides, and after the failure of the lower string cable 2, the function of the strut 3 near the breaking point fails, and the upper string 1 alone bears the external load, which may be due to the bearing capacity. Insufficient and fracture occurs, and the entire string beam will also fail

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