北京地铁6号线浅埋暗挖法车站施工地表沉降规律研究

发布时间：2018-01-12 00:32

  本文关键词：北京地铁6号线浅埋暗挖法车站施工地表沉降规律研究　出处：《铁道建筑》2014年04期 　论文类型：期刊论文

  更多相关文章： 地铁车站 暗挖法 地表沉降 沉降槽 影响因素

【摘要】：对北京地铁6号线浅埋暗挖法车站施工引起的地表沉降规律进行研究,通过其中10个车站的地表沉降监测数据,分析地表沉降与车站埋深、开挖面积等影响因素的相关关系。研究结果表明:车站埋深与地表沉降不成反比;开挖面积相近时,东四站及其以东的暗挖车站地表沉降值明显大于其以西的暗挖车站;地表沉降区间频率曲线服从正态分布,地表沉降-40~-60 mm出现的频率最大;暗挖车站主体小导洞及桩柱体系、初支扣拱、二衬扣拱3个主要施工阶段引起的地表沉降比值为38∶14∶5;沉降槽反弯点与隧道中线的距离为10~14 m,地层损失率为0.3%~0.7%。研究结论可为类似车站周边环境风险评估及北京规划远期地铁线路起到指导作用。
[Abstract]:The relationship between the surface settlement and the surface subsidence caused by the construction of the shallow - buried underground excavation method in Beijing Metro Line 6 is studied . The results show that the surface settlement between the surface settlement and the surface settlement is not inversely proportional to the surface settlement . The results show that the surface settlement value of the underground station and the east of the tunnel is obviously larger than that of the underground excavation station in the west . The surface settlement ratio is between 10 and 14 m and the formation loss rate is 0.3 % 锝，

本文编号：1411938