铁道科学与工程学报2011，Vol.8Issue(4)：1-6,6.
高速铁路隧道列车振动响应影响因素分析
Analysis of influence factors on dynamic response of high-speed railway tunnel under vibration load
摘要
Abstract
The dynamic calculation model about interaction between tunnel structure and surrounding rock was built by finite difference method. The influence of some factors on the dynamic response of tunnel structure with train vibration was analyzed, such as surrounding rock conditions, train velocity, the design parameters of tunnel base structure, the situation of foundation base and so on. The results show that the structure dynamic responses increase with the improvement of the level of surrounding rock; the increase of train velocity and thickness of weak layer; the decrease of thickness of invert arch, filling layer, and rise -span ratio of invert arch. The increase of thickness of base structure and rise - span ratio of invert arch can reduce vibration and improve the stress state, but the effect is very limited on reducing the deformation of the tunnel structure.关键词
高速铁路/隧道/动力响应/数值分析Key words
high-speed railway/ tunnel/ dynamic response/ numerical analysis分类
交通工程引用本文复制引用
丁祖德,彭立敏,雷明锋,施成华..高速铁路隧道列车振动响应影响因素分析[J].铁道科学与工程学报,2011,8(4):1-6,6.基金项目
国家自然科学基金资助项目(50808176 （）
51108461) （）
铁道部科技研究开发计划项目(2006G007-B) （2006G007-B）
