摘要
结合天津地铁2号线2号出入口通道工程,介绍了在天津含水软土地层条件下,采用冻结法的浅埋暗挖施工技术。应用有限元软件ANSYS,对施工进行了数值模拟分析。结果表明,施工过程中洞室结构稳定,冻结法浅埋暗挖施工方法可行,并可实现洞内施工安全和地面沉降的控制要求,解决了明挖施工对城市交通的干扰。
Taking into consideration of entrance and exit No. 2 construction project on Tianjin metro line 2, the paper introduces the freezing method under the condition of aqueous soft soil layer in Tianjin by adopting the shallow buried tunneling construction technology. By using the finite element software ANSYS, numerical simulation analysis is made on the construction. The results show that the structure is stabile in the cavern construction process, and the freezing method for shallow buried tunneling is feasible, and it can meet the requirement of the construction safety and surface settlement control, and eliminate interruption of open cut construction to the urban surface trafifc.
出处
《现代城市轨道交通》
2015年第2期38-41,45,共5页
Modern Urban Transit
关键词
隧道工程
软土
浅埋暗挖
冻结法
数值模拟
tunnel engineering
soft soil
shallow buried tunneling
freezing method
numerical simulation
