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Three-dimensional beam string structure

A technology of space tension beams and string beams, which is applied to truss structures, joist beams, girders, etc., can solve problems such as damage failure, continuous collapse, and loss of tension string beam structures, so as to enhance integrity, prevent out-of-plane instability, The effect of improving the collapse resistance performance

Active Publication Date: 2013-11-20
SOUTHEAST UNIV
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  • 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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Embodiment Construction

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

[0019] Such as image 3 Shown is a schematic diagram of a string string structure based on the idea of ​​the present invention, including several string string structures and purlins (5) arranged in parallel at intervals, each string string structure includes a pair of upper string beams (1), several pairs of struts (3) and A pair of lower string stay cables (2), the pair of upper string beams (1), pair of braces (3) and pair of lower string stay cables (2) are symmetrically arranged on a plane of symmetry relative to the plane of symmetry On both sides, the upper chord beam (1), brace (3) and 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 Fixed with both ends of the upper chord cable (1), the upper end of the strut (3) is hinged with the u...

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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, 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 string beams in space include several string string beam structures and purlins 5 a...

Claims

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Application Information

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IPC IPC(8): E04C3/11E04C3/10E04B1/58
Inventor 蔡建国丁一凡冯健
Owner SOUTHEAST UNIV
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