- 摘 要
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馬 星 (同濟大學工程力學與技術(shù)系 上?!?00092)鄧洪洲 王肇民?。ㄍ瑵髮W建筑工程系 上海200092)
[提要] 將桅桿結(jié)構(gòu)振型表示為三角級數(shù)形式,基于Lagrange第二方程,推導彈性支座連續(xù)梁模型簡化振動方程。給出了不同情況下桅桿結(jié)構(gòu)低階頻率和振型的實用計算表格,并通過計算實例與有限元方法進行比較,兩者結(jié)果吻合較好。
[關(guān)鍵詞] 桅桿結(jié)構(gòu) 振動特性頻率 振型As expressing the modes of guyed masts in sin series, the simplified vibration equations for continuous beam supported by elastic springs are derived based on the second Lagrange equations.A precticable data table is given to calculate the first frequencies and modes of guyed masts with different spring supports, and the calculating result is confirmed by that results of FEM.
Keywords: guyed masts; inherent vibration characteristics; frequency; modes參 考 文 獻
1.蔣濤,馬星,王肇民,桅桿結(jié)構(gòu)風振系數(shù)的計算方法.特種結(jié)構(gòu),1998,(3).
2.王肇民.桅桿結(jié)構(gòu). 北京:科學出版社,2001.
3.馬星,鄧洪洲,王肇民,桅桿結(jié)構(gòu)靜力計算簡化計算方法.力學與實踐,2001,(1).