摘要
以3种典型热轧H型钢截面简支梁为研究对象,分别采用初等梁理论模型和考虑剪切变形及转动惯量影响的高等梁理论模型,分析在不同长细比情况下H型钢截面简支梁前3阶自由振动频率的差异,得出了初等梁理论进行H型钢梁自由振动分析的适用条件,该结论可供结构动力分析及动力设计参考。
With three kinds of typical hot-rolled H-shape steel section free beam as research objective,the difference of former third-order free vibration frequency with different slenderness ratio was analyzed by elementary beam theory model and higher beam theory model which considering the shearing deformation and the inertia effect.The applicable conditions of free vibration analysis by the elementary beam theory on H-shape steel beam is obtained.This conclusion provids reference for dynamic analysis and the dynamic design.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2012年第2期29-33,共5页
Journal of Railway Science and Engineering
基金
河南省高等学校青年骨干教师资助计划项目
关键词
H型钢梁
自由振动频率
剪切变形
转动惯量
长细比
H-shape steel beam
free vibration frequency
shear deformation
rotational inertia
slenderness ratio
