EFFECTS OF SOME PARAMETERS ON MECHANICAL PERFORMANCE OF THE BEAM STRING STRUCTURE
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摘要: 张弦梁结构已在我国大型工程中有所应用,但对该种结构的理论研究并不完善。通过分析在全跨荷载或半跨荷载作用下,初始缺陷、矢跨比、垂跨比和预应力水平对结构承载性能的影响,得出拱矢跨比基于承载性能的最优值。对张弦梁结构的设计具有有益的参考。Abstract: Beam-string structures have been adopted in several large-span structures. However, theoretical analysis of this kind of structures has not been well established. The effects of the imperfections, rise-span ratio, sag-span ratio and prestressing value on the mechanical performance are researched under uniform ful-l span load and hal-f span load. So the optimal rise-span ratio of the arch is obtained. These conclusions provide some useful suggestions for the design of beamstring structures.
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Key words:
- beam string structure /
- imperfections /
- rise-span ratio /
- sag-span ratio /
- prestressing
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