摘要
研究以厦门芦澳路—海沧疏港通道地下互通立交隧道为依托工程,探究车辆动载机理,结合数值模拟结果分析车辆振动荷载作用下隧道衬砌结构的动力响应。研究表明:不同车速时的振动荷载与时间的关系曲线趋势基本一致,车速与振动荷载呈正相关;衬砌结构各位置的振速随着其劣化程度的加深而提高,振速增长量和增长率最高分别出现在拱顶和右边墙位置,路面位置的振速增长量和增长率均为最低;随着时间的增加,衬砌结构各位置的位移呈先增加后降低再增加的趋势,拱顶位置的位移最大,达到0.117 2 cm,路面的位移最低,仅为0.084 cm。
Based on the underground interchange tunnel of Xiamen Luao road-Haicang port channel,this study explores the mechanism of vehicle dynamic load,and analyzes the dynamic response of tunnel lining structure under vehicle vibration load combined with numerical simulation results.The results show that the trend of the relationship between vibration load and time at different speeds is basically the same,and the speed is positively correlated with the vibration load.The vibration velocity of each position of the lining structure increases with the deepening of its deterioration degree.The highest growth rate and growth rate of vibration velocity appear in the vault and the right side wall respectively,and the growth rate and growth rate of vibration velocity in the pavement position are the lowest.With the increase of time,the displacement of each position of the lining structure increases first,then decreases and then increases.The displacement of the vault position is the largest,reaching 0.1172 cm,and the displacement of the pavement is the lowest,only 0.084 cm.
出处
《建筑技术开发》
2024年第3期70-72,共3页
Building Technology Development
关键词
隧道
车辆荷载
衬砌结构
动力响应
tunnel
vehicle load
lining structure
dynamic response
