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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (4): 343-350.DOI: 10.3973/j.issn.1672-741X.2014.04.009

• 规划与设计 • 上一篇    下一篇

南京地铁3号线浦珠路站满足大直径盾构整体始发结构托换技术研究

刘方明   

  1. (中铁隧道勘测设计院有限公司, 天津 300133)
  • 收稿日期:2014-01-06 修回日期:2014-02-25 出版日期:2014-04-20 发布日期:2014-04-25
  • 作者简介:刘方明(1983—),女,浙江东阳人,2005年毕业于武汉化工学院,交通土建专业,本科,工程师,从事隧道及地下结构工程方面设计工作。

Study on Underpinning of Puzhulu Metro Station on Line  3 of Nanjing Metro to Achieve Integral Launching of Largediameter Shield Machine

LIU Fangming   

  1. (China Railway Tunnel Survey & Design Institute Co, Ltd, Tianjin 300133, China)
  • Received:2014-01-06 Revised:2014-02-25 Online:2014-04-20 Published:2014-04-25

摘要:

为满足南京地铁3号线浦珠路站大直径盾构整体始发的需要,对该站原分体始发结构进行调整。通过分析大直径盾构整体始发技术对地铁车站的影响,总结出地铁车站在大盾构整体始发条件下结构设计的处理方法及难点。根据车站工程地质,利用混凝土梁柱临时托换体系满足始发要求,并采用SAP2000有限元软件建立二维及三维模型进行模拟分析,提出转换始发的关键技术。得出采用临时结构托换技术解决大直径盾构整体始发技术是可行的,且临时结构托换体系对原结构尺寸未产生影响。通过分析验证了混凝土梁柱体系在在地铁车站结构受力体系临时转换时的适用性。

关键词: 大直径盾构, 整体始发, 地铁车站, 临时托换体系, 数值模拟

Abstract:

According to the original design, separate launching of a large diameter shield machine is to be made at Puzhulu Station on Line 3 of Nanjing Metro In the later stage, however, it is decided that integral shield machine launching is to be implemented to replace the original separate launching Therefore, the structure of the Metro station should be treated In the paper, the influence of the integral launching of the large diameter shield machine on the Metro station is analyzed, the key points of the treatment of the structure of the Metro station are summarized, solution of underpinning by concrete beams and columns is proposed, and calculation is made for the underpinning system by means of 2D and 3D models based on SAP2000 finite element software Conclusion is drawn that the underpinning system adopted for the Metro station is feasible and rational

Key words: largediameter shield machine, integral launching, Metro station, temporary underpinning system, numerical simulation