摘要
用数值分析法,以烟囱桅杆结构的实际工程为研究对象,考虑纤绳与烟囱的共同作用、几何非线性效应及纤绳的初应力的影响,对桅杆结构动力特性进行研究。研究结果表明:纤绳与烟囱的振型表现出相对独立、互相协调,互相制约的特性;其自振频率和振型随振型阶次的增加呈规律性交替变化;纤绳的初应力是影响结构自振频率的主要因素,频率随纤绳初应力的增加而增加。
The actual project of chimney mast is taken as the rese arch subject, using numerical analysis method to analyze dynamic characteristic of the guyed mast considering the coaction of cable and chi mney,the effect of geometric non-linearity and the initial cable stress. The re sults show the modes of vibration of cable and chimney are relative independence , intercoordination and mutual constraints.And both of natural frequency and mode of vibration change alternately with the increasing of mode order of vibr...
出处
《钢结构》
2009年第1期25-28,共4页
Steel Construction
基金
山西省科技攻关项目(20080321086)
关键词
烟囱桅杆
初应力
动力特性
数值分析
chimney mast
initial stress
dynamic characteristic
numerical analysis
