摘要
阐述了基于小波变换的隧道洞口段三维动力有限元分析的时域分析法,建立了相应的有限元分析模型,对提速列车振动荷载作用下,不同围岩条件隧道洞口段动力响应特性进行分析研究,得出了隧道洞口段不同围岩条件下的时程响应规律。研究成果对进一步分析提速铁路隧道洞口段的动力稳定性具有重要意义。
Based on wavelet transform, a method of time domain for 3D dynamic finite element method （FEM） of tunnel entrance was introduced; and then a model of FEM was established. The dynamic response properties of tunnel＇s entrance with varying surrounding rock mass were analyzed under the vibration loading of the elevating train. The time-response laws for the entrance of tunnel were obtained. The obtained results have important significance for further analyzing dynamic stability of tunnel by reason of the speed-elevated train.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第24期4461-4465,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
广东省自然科学基金资助项目(5300512)
湖南省自然科学基金资助项目(03JJY3088)
关键词
隧道工程
隧道洞口
动力响应分析
三维有限元
小波变换
时域分析法
tunneling engineering： entrance of tunnel： dynamic response analysis： 3D finite element method （FEM）
wavelet transform： time domain analysis
