Beam string structure

A chord beam and surface structure technology, applied in building structures, buildings, etc., can solve problems such as failure of chord beams, shift of the center of gravity of chord beams, and failure of action, so as to eliminate potential safety hazards, prevent continuous collapse, and improve anti-collapse performance. Effect

Active Publication Date: 2013-10-23
SOUTHEAST UNIV
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  • Abstract
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  • Claims
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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

Method used

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Examples

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Example Embodiment

[0019] The present invention will be further explained below in conjunction with the drawings.

[0020] Such as figure 2 Shown is a schematic diagram of a string beam structure based on the idea of ​​the present invention, including a pair of upper string beams 1 (or arches or trusses), several pairs of struts 3 and a pair of lower string cables 2, the pair of upper string beams 1, forming The pair of struts 3 and the pair of lower chord cables 2 are arranged symmetrically with respect to a symmetry plane on both sides of the symmetry plane. The upper chord beam 1, struts 3 and the lower chord cable 2 on the same side of the symmetry plane form a plane Structure, the surface structures on both sides of the symmetry plane are respectively denoted as the P surface and the N surface; in the same surface structure, the two ends of the lower string cable 2 are respectively fixed to the two ends of the upper string cable 1, and the support rod 3 The upper end is hinged to the upper ch...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): E04B1/342
Inventor 蔡建国丁一凡冯健
Owner SOUTHEAST UNIV
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