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Three-dimensional beam string structure

A technology for space tensioning string beams and string beams, applied in truss-type structures, joists, girders, etc., can solve the problems of loss of string beam structure, continuous collapse, damage failure, etc., to improve the anti-collapse performance, enhance the integrity, and prevent the plane The effect of external destabilization

Active Publication Date: 2015-07-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the purlin 5 breaks and breaks during use, the connection between the string beam structures of each string beam will be lost, and the string string beam structure of a single string beam structure may fail due to insufficient bearing capacity due to external loads, and continuous collapse may occur

Method used

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Examples

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Embodiment Construction

[0018] The present invention will be further explained below in conjunction with the drawings.

[0019] Such as image 3 Shown is a schematic diagram of a string beam structure based on the idea of ​​the present invention, including several string beam structures and purlins (5) arranged in parallel and spaced apart. Each string beam structure includes a pair of upper string beams (1), several pairs of struts (3) and A pair of lower string cables (2), the pair of upper string beams (1), the pair of struts (3) and the pair of lower string cables (2) are symmetrically arranged on the symmetry plane with respect to a symmetry plane On both sides, the upper chord beam (1), the brace (3) and the lower chord cable (2) on the same side of the symmetry plane form a surface structure; in the same surface structure, the two ends of the lower chord cable (2) are respectively It is fixed to both ends of the upper chord (1), the upper end of the strut (3) is hinged with the upper chord (1), ...

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Abstract

The invention discloses a three-dimensional beam string structure. Two adjacent surface structures located at different beam string structures are a surface P and a surface N. Multiple inclined cables are arranged between the surface P and the surface N. The inclined cables are inclinedly arranged relatively to purlines. One end of each one of the inclined cables is hinged to an upper beam of the surface P and the other end of the inclined cable is fixedly connected to a lower end of a support rod of the surface N. Compared with the prior art, the three-dimensional beam string structure improves an inclined cable utilization rate. After the purlines lose efficacy, through connection between the inclined cable and a beam string structure adjacent to the inclined cable, the integrality of the three-dimensional beam string structure does not disappear immediately; collapse resistance is improved; continuous collapse is prevented; potential safety hazard is eliminated; and the structural integrality is greatly improved. The inclined cables can effectively solve the problem that out-of-plane unstability is produced after efficacy losing of inhaul cables at a side of a bottom chord of the existing beam string structure.

Description

Technical field [0001] The invention relates to a space string beam structure, which belongs to a building structure. Background technique [0002] At present, there are more and more applications of large-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 between the use function, design rationality and economic indicators. In order to meet the use function of the structure while reducing the weight of the structure and improving the rigidity of the structure, prestressed beams equipped with cables are increasingly used in large-span steel structures. Through the arrangement of prestressed cables and struts, the bearing capacity and rigidity of large-span steel structures have been greatly improved. [0003] Such as figure 1 As shown, the existing spatial string beam includes several string beam structures and purlins 5 arranged in parallel and spaced apart,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/11E04C3/10E04B1/58
Inventor 蔡建国丁一凡冯健
Owner SOUTHEAST UNIV
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