摘要
为有效减少城市地铁暗挖车站爆破施工对既有大型建筑物的扰动,确保隧道施工及邻近建筑物的安全,文章采用Midas-GTS有限元软件建立了隧道-围岩-结构三维数值模型,评估了爆破振动对青岛国信体育馆稳定性的影响。同时,将现场监测数据与数值模拟结果进行对比,现场监测和数值模拟的最大振速均满足规范提出的安全允许振速范围要求,表明文章构建的三维数值模型合理,采用的设计参数符合设计要求和工程实际,可为类似工程提供借鉴。
In order to effectively reduce the disturbance of blasting construction of urban undercutting subway station on existing large buildings and ensure the safety of tunnel construction and adjacent buildings,a three-dimensional numerical model of tunnel-surrounding rock-structure was established by using Midas-GTSfinite element software,and the influence of blasting vibration on the stability of Qingdao Conson Gymnasium was evaluated.At the same time,the field monitoring data were compared with the numerical simulation results.The maximum vibration velocity of field monitoring and numerical simulation meets the requirements of the safe allowable vibration velocity range proposed in the specification.It shows that the three-dimensional numerical model constructed in this paper is reasonable,and the design parameters adopted meet the design requirements and engineering practice,which can provide reference for similar engineering in the future.
作者
龙明华
龙星宇
LONG Minghua;LONG Xingyu(China Railway Fifth Bureau Group First Engineering Co.,Ltd.,Changsha 410011,Hunan,China;School of Resource&Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China)
出处
《工程技术研究》
2024年第9期1-5,共5页
Engineering and Technological Research
关键词
浅埋隧道
软硬不均地质
数值模拟
爆破振动
既有大型建筑物
结构稳定性
shallow-buried tunnel
soft and hard uneven geology
numerical simulation
blasting vibration
existing large buildings
structural stability
