摘要
基于瑞利法(能量法)基本原理推导出跨座式轨道交通单跨轨道梁横向自振频率的简化计算公式。通过简支梁和固端梁2种退化的极端情况对公式进行了验证。继而通过具体算例将公式计算结果与MIDAS有限元计算结果进行了对比,论证了计算公式满足工程设计的精度要求。所推导的公式可以准确、便捷地计算跨座式轨道交通轨道梁横向自振频率。
Based on the principle of Rayleigh method （ energy method ）, a simplif ied calculation formula of thetransverse natural frequency of monorail transit straddled track beam w as derived in this paper . T he formula w asverif ied by the extreme situation of tw o kinds of simply supported beam and f ixed end beam. T he calculated resultsof concrete example w ere compared w ith M IDAS f inite element results to prove that the formula can meet theaccuracy requirement of the engineering and calculate the transverse natural frequency of straddled track beamaccurately and conveniently .
出处
《铁道建筑》
北大核心
2017年第8期15-17,23,共4页
Railway Engineering
关键词
轨道交通
跨座式轨道梁
横向自震频率
数值计算
窄梁
单轨交通
Rail transit
Straddled T rack Beam
T ransverse natural vibration frequency
Numerical calculation
Narrow beam
M onorail transit
