摘要
基于通用有限元分析软件ANSYS,根据京津城际快速列车客运专线桥梁上声屏障结构的设计方案建立有限元模型,对声屏障结构的固有频率进行了研究并提出声屏障结构的简化计算模型.综合考虑高速列车运行过程中声屏障结构的动力学环境,计算在风压、列车运行过程中产生的空气脉动力等共同作用下的声屏障结构的动态响应,阐述了声屏障结构各组件的振动规律,并提出声屏障结构设计需要考虑的问题.
According to noise barrier design scheme of special railways for passenger transportation from Bcijing to Tianjin, the finite element model of noise barrier was established based on the general software ANSYS. The natural frequency of noise barrier structure was detailedly researched and a practical calculation model was presented. The dynamic environment around the noise barrier, which includes the natural wind pressure and the air turbulent force induced by the high speed train, was considered to simulate the transient dynamic response of the noise barrier structure. The laws of each eomponent＇s vibration of the noise barrier structure were obtained. In addition, items needed be paid attention to was put forward.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2009年第4期505-508,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
声屏障
空气脉动力
固有频率
动力学响应
noise barrier
air turbulent force
natural frequency
dynamic response
