中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2000, Vol. 19 ›› Issue (1): 29-30,37.

• • 上一篇    下一篇

圆弧拱对称基频和振型的实用计算

蒋志刚   

  1. 国防科技大学工程兵学院, 湖南长沙 410003
  • 收稿日期:1999-01-25 出版日期:2000-02-21 发布日期:2016-11-08
  • 作者简介:蒋志刚(1961-),男,湖南资兴人,国防科技大学工程兵学院副教授(硕士),主要从事桥梁及建筑结构的教学和研究

Simplified Calculation for the Lowest Symmetrical Vibration Natural Frequency of Arch

JIANG Zhi-gang   

  1. Department of Civil Engineering, Engineer College, National University of Defense Scienceand Technology, Changsha 410003, China
  • Received:1999-01-25 Online:2000-02-21 Published:2016-11-08

摘要: 忽略拱的轴向变形,选取满足边界条件和对称性的近似振型函数,运用能量法导出单孔圆弧拱对称挠曲振动基频的实用计算公式.与有限元结果比较,矢跨比f/l≥0.2时吻合较好.

关键词: 圆弧拱, 对称挠曲, 振型与基频

Abstract: Based on the approximate vibration functions,which meet with the boundary conditions and symmetry of deflection vibration of arch,the simplified equations for calculating the lowest symmetrical vibration natunal frequency are derived by enengy method.When f/l≥0.2,the frequency results from the simplified method are nearly the same as from finite element method.

Key words: arch, symmetrical deflection vibration, vibration function and frequency

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