土岩组合地层中拱盖法地铁车站工法优化研究
A Study of Optimizing the Arch-Down Construction Method for a Metro Station in the Soil-Rock Composite Stratum
  
中文关键词:土岩组合地层  拱盖法  双侧壁导坑法  CD法  拱顶沉降  地表沉降
英文关键词:soil-rock composite stratum  arch-down method  double-side-drift method  CD method  settlement of the crown  settlement of the ground surface
基金项目:
作者单位
李宁宁 北京城建设计发展集团股份有限公司青岛分公司山东青岛266005 
杜虎 北京城建设计发展集团股份有限公司青岛分公司山东青岛266005 
摘要点击次数: 68
全文下载次数: 22
中文摘要:
      以青岛地铁2号线枣山路车站为例,采用数值分析结合现场监测,揭示了施工过程中的结构及围岩变形规律,并在此基础上进行拱盖法车站拱部双侧壁及CD法的工法分析。研究表明,两种工法的地层变形均小于控制值,且围岩均未发生整体沉降,但CD法施工时地层变形更大,应力重分布更充分,可以充分发挥围岩自承载能力,降低支护成本的同时也可提高施工工效。研究成果适用于在“上软下硬”地层中设计施工的拱盖法暗挖车站,可为类似工程提供借鉴。
英文摘要:
      With the Zaoshan Road Station of Line 2 of Qingdao Metro as a practical example,the deformation laws of the structure and the surrounding rock in the course of construction are exposed in the paper by the numerical analysis in combination with the site tests,upon the basis of which an analysis is made of the construction methods of the Dual-Side-Drift Method and the CD Method for the arch-down subway station.The result of our reasearch shows that, with either of the two construction methods adopted for the project,it is found that the value of the deformation of the stratum is less than the control value and no overall settlement of the surrounding rock happens. However,there will be greater deformation in the stratum and more sufficient stress redistribution when the CD method is adopted for the project,in which case full play can be given to the self-bearing capacity of the surrounding rock,as a result of which the cost of supporting may be reduced and meanwhile,the construction efficiency may be improved.The result of our research may be applied to the design and construction of other undercut arch-down stations in the stratum of being soft in the upper part and hard in the lower part. The paper may also serve as a useful reference for other similar projects.
李宁宁,杜虎.土岩组合地层中拱盖法地铁车站工法优化研究[J].国防交通工程与技术,2017,15(4):27~31
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第572939访问者     谢谢你对本刊的关注与支持

版权所有《国防交通工程与技术》编辑部
编辑部地址:河北省石家庄市北二环东路17号石家庄铁道大学 联系电话:0311-87935805  E-mail: gfjt@stdu.edu.cn
本系统由北京勤云科技发展有限公司设计