武汉软土地区地铁隧道长期沉降规律及原因分析
Long-term Settlement and Research Analysis of Subway Tunnels in Wuhan Soft Soil Areas
柯洋 1代帅 2李谋思1
作者信息
- 1. 武汉市勘察设计有限公司,湖北 武汉 430000
- 2. 武汉城建集团建设管理有限公司,湖北 武汉 430000
- 折叠
摘要
以武汉地铁8号线出入段线矩形隧道为分析对象,将近5年的地铁运营监测沉降数据与隧道沿线工程地质条件、地下水及周边施工进行对比分析,系统研究地铁隧道长期沉降规律.结果表明,出入段线隧道最大累计沉降106.1 mm,且沿线形成了三个大的沉降槽.隧道结构下卧软弱土层较厚且分布不均、地下水位及上盖物业开发是导致出入段线长期沉降的主要原因.轨道交通结构的长期沉降问题,需要结合"设计—施工—运营"统筹考虑.
Abstract
Taking the rectangular tunnel of Wuhan Metro Line 8 access section line as the object of analysis,nearly five years of metro op-eration monitoring settlement data and engineering geological conditions along the tunnel,groundwater and surrounding construction are com-pared and analyzed to systematically study the long-term settlement pattern of metro tunnels.The results indicate that the maximum cumulative settlement of the entrance and exit section tunnel is 106. 1mm,and three large settlement grooves have been formed along the line. The thick and unevenly distributed soft soil layer beneath the tunnel structure,the groundwater level,and the development of the overlying property are the main reasons for the long-term settlement of the entrance and exit sections. The long-term settlement problem of rail transit structures needs to be comprehensively considered in conjunction with"design construction operation".
关键词
地铁隧道/软土地区/长期沉降/地下水位/上盖物业Key words
subway tunnel/soft soil area/long term settlement/groundwater level/upper property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据