YAO Xiong-liang, ZHANG Ling-jiang, WEI Sha, et al. Research on mechanical characteristics of meta-synthetic mast[J]. 2010, 29(4): 45-48. DOI: 10.13873/j.1000-97872010.04.003.
综合集成桅杆力学特性研究
摘要
以八边形综合集成桅杆为研究对象
系统研究了综合集成桅杆的风载荷特性
桅杆在风载荷下的力学特性及桅杆的固有振动特性。计算了桅杆在设计风速下的风载荷
得到了桅杆受风时平均压力和脉动压力的变化规律
并据此提出了综合集成桅杆结构分析的外载荷计算公式。通过桅杆的结构动力分析
证明了综合集成桅杆在设计风速下运动不会发生共振现象。通过桅杆的模态分析
提出了综合集成桅杆结构设计中应重点考虑的问题。研究旨在为综合集成桅杆的结构设计提供参考。
Abstract
Taking octagon section meta-synthetic mast as the research object
the wind load characteristics of meta-synthetic mast
the mechanical characteristics of mast under wind load
and the natural vibration characteristics are investigated systematically.The wind load under design wind velocity is calculated
and the variation law of average pressure and fluctuating pressure is also obtained.Hereby the external load calculation formula of meta-synthetic mast is proposes.Based on the mast structural dynamic analysis
it is proved that resonance phenomenon of meta-synthetic mast can not take place under design wind velocity.Based on the mast modal analysis
the problems which should be mainly considered in the structure design are proposed.It aimed to provide reference for structure design of meta-synthetic mast.