富水液化砂层中浅埋暗挖矩形出入口通道方案设计  

Conceptual Design of Rectangular Entrance and Exit Passageway for Shallow Tunnelling Method in Water-rich Liquefied Sand Layer

作　　者：姚亮 YAO Liang(China Railway Liuyuan Group Co.Ltd.,Tianjin 300308,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《天津建设科技》2023年第1期59-62,共4页Tianjin Construction Science and Technology

摘　　要：针对老城区地铁建设过程中遇到的周边环境复杂、地面交通繁忙、地下管线众多等问题,以实际工程为例,从地层加固选型、通道开挖、主体结构、承载体系等多方面对不良地质条件下地铁出入口通道设计方案进行分析。实践证明,冻结加固工法对不良地质及超浅覆土条件下实施暗挖具有较好的效果,是一种较优的加固选择。In view of the problems encountered in the process of subway construction in the old city,such as complex surrounding environment,busy surface traffic and numerous underground pipelines,this paper takes the actual project as an example to analyze the design of the entrance and exit passageways under adverse geological conditions from the aspects of formation reinforcement selection,tunnel excavation,main structure and bearing system. Practice has proved that freezing reinforcement method has good effect on excavation under bad geological conditions and ultra-shallow overburden conditions,and it is a better reinforcement choice.

关 键 词：液化砂层 浅埋暗挖 地铁 出入口通道 冻结法 

分 类 号：TU318[建筑科学—结构工程]