Folding cable rod dome structure

Abstract

The invention discloses a folding dome structure, which comprises an internal cable rod system and an annular connecting rod mechanism, wherein the annular connecting rod mechanism is connected with the internal cable rod system through inhaul cables; the annular connecting rod mechanism is formed by connecting at least four pressure rods end to end through node pieces; and the nodes of the pressure rods are connected with the node pieces through rotating hinges. Folding and unfolding of the internal cable rod system are driven by motion of the annular connecting rod mechanism, so that folding and unfolding of the whole structure are realized; the folding dome structure is simple in motion mechanism and reasonable; the external load of the structure is mainly borne by the internal cable rod system, so the structure has light dead weight; the members of the structure are further fewer than those of a common grid structure, so the folding dome structure achieves a compact and vivid effect and overcomes the defect that rods of a common folding structure are numerous and messy in perception; and the folding dome structure is simple in design and construction, and particularly meets the large-span requirement.

Description

technical field [0001] The invention relates to a dome structure, in particular to a folded dome structure. Background technique [0002] In the past few decades, scholars from various countries have proposed the concept of folding structures, some of which have been applied in aerospace, architectural structures and military engineering. At present, the research on the folded dome structure based on scissor elements is the most systematic, but it is rarely used in long-span structures. , low-cost node design suitable for engineering applications; (2) In addition to the axial force, the members of the folding dome structure also bear a certain bending moment, the mechanical performance is not good, and the cost is high; (3) The stiffness of the folding dome structure is very low Poor, the displacement is difficult to meet the use requirements. For this reason, it is very necessary to propose a new type of folding structure so that it can be applied to long-span systems. ...

AI Technical Summary

Problems solved by technology

At present, the research on the folded dome structure based on scissor elements is the most systematic, but it is rarely used in long-span structures. , low-cost node design suitable for engineering applications; (2) In addition to the axial force, the members of the folding dome structure also bear a certain bending moment, the mechanical performance is not good, and the cost is high; (3) The stiffness of the folding dome structure is very low Poor, the displacement is difficult to meet the use requirements

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