摘要
针对目前国内存在的高速铁路与地铁近距离平行隧道工程,采用拟合的列车振动荷载,通过在轮轨上施加实测振动荷载,同时对列车施加速度场的方式,分析了在高铁列车单独行驶、高铁列车和地铁列车同向行驶及相向行驶3种工况下平行隧道衬砌拱腰、拱脚及道床中心的动力响应特性及其相互关系。结果表明:在列车行驶过程中,列车距离监测点越近,其振动效应越强;在同一横截面上,高速铁路隧道道床中心的动力响应最大,拱脚次之,拱腰最小;高速铁路隧道衬砌动力响应在高铁列车单独行驶时最小,高铁列车与地铁列车同向行驶时次之,高铁列车与地铁列车相向行驶时最大。
According to the existing small distance parallel tunnels of high speed railway and metro in China,the dynamic response characteristics and their correlation for lining arch waist,arch foot and ballast bed center of parallel tunnels under such three conditions as high speed train traveling separately,high speed trains and metro trains traveling in the same direction and in the opposite direction were analyzed by using fitting train vibration load,exerting the measured vibratory load on the wheel-rail and applying velocity field to the trains.The results show that vibration effect is strong if the trains are close to the monitoring point in the traveling process,the dynamic response of ballast bed center in high speed railway tunnel is the largest,followed by dynamic response of arch foot and arch waist has the minimum dynamic response on the same cross section,the dynamic response of high speed railway tunnel lining is minimum when the high speed trains travel separately,the dynamic response takes second place when the high speed trains and metro trains travel in the same direction,and dynamic response is the largest when high speed trains and metro trains travel in the opposite direction.
作者
陈行
晏启祥
刘阳
曾勤
黄希
CHEN Hang YAN Qixiang LIU Yang ZENG Qin HUANG Xi(Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University Chengdu Sichuan 610031 , China)
出处
《铁道建筑》
北大核心
2017年第2期48-52,共5页
Railway Engineering
基金
国家自然科学基金(51278425)
中国铁路总公司科技研究开发计划(2014G004-H)
关键词
铁路隧道
动力响应
理论分析
平行隧道
高速铁路
地铁
振动荷载
Railway tunnel
Dynamic response
Theoretical analysis
Parallel tunnel
High speed railway
Metro Vibratory load
