一种新型的三索桁架式柔性支架体系及与传统柔性体系的对比分析

A new type of three-cable truss flexible support system and the comparative analysis with traditional flexible systems

提出了一种新型的三索桁架式柔性支架体系。采用SAP2000有限元分析软件建立了6排3跨结构模型,对比传统的三索结构模型和两索结构模型,分析了结构位移、模态等方面,结果表明:提出的新型三索桁架式柔性支架体系具有良好的受力性能、较好的位移控制能力以及较高的整体刚度。与传统三索结构相比,其在极限荷载(风吸)工况下,位移控制能力更好,能够适应更高的风吸荷载。与两索结构相比,其在各种工况下的位移控制能力都更好,且能适用的结构跨度比两索结构更大。

A new type of three-cable truss flexible support system is proposed.A 6-row and 3-span structural model is established using SAP2000 finite element analysis software.A comparative analysis is conducted with traditional three-cable and two-cable structural models,analyzing structural displacement,modal behavior,and other aspects.The results show that the proposed new type of threecable truss flexible support system has good load-bearing performance,better displacement control capability,and higher overall stiffness.Compared with the traditional three-cable structure,it has a better displacement control ability under extreme load conditions such as wind suction and can adapt to higher wind suction loads.Compared with the two-cable structure,it has a better displacement control ability under various working conditions and can be applied to larger structural spans than the two-cable structure.