土工基础

›› 2011, Vol. 25 ›› Issue (6): 23-.

• 工程实录 • 上一篇    下一篇

大断面城市隧道衬砌支护参数研究

楼晓明1， 龚彦峰2   

  1. （1.福州大学紫金矿业学院，福州 350108； 2.中铁第四勘察设计院集团有限公司,武汉 430063）
  • 收稿日期:2011-06-18 出版日期:2011-12-20 发布日期:2012-01-15
  • 作者简介:楼晓明，男，1972年生,浙江东阳人，福州大学紫金矿业学院教师，博士，讲师。
  • 基金资助:

    福建教育厅资助项目（JA09029）；2008年度福州大学科技发展基金（自然科学类）资助项目（2008-XQ-20）

Studies on Lining Parameters of a Large Cross Section Tunnel in the City 

LOU Xiao  ming1， GONG  Yan  feng2   

  1. (1. College of Zijin Mining, Fuzhou University, Fuzhou 350108; 
     2. China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan 430063, China)
  • Received:2011-06-18 Online:2011-12-20 Published:2012-01-15

摘要： 武广高铁金沙洲隧道位于广州市西北侧。为了保证金沙洲隧道在施工和运营期间安全、可靠及经济合理，对其进行了初期支护和二次衬砌支护参数分析研究。首先，根据地质条件及相关设计规范，应用类比法对Ⅳ级围岩的初期和二次衬砌支护参数进行了设计。然后，根据实际情况，考虑地下水作用，采用有限元法计算分析了部分Ⅳ级围岩隧道初期支护和二次衬砌结构受力变化。最后进行了强度验算，为金沙洲隧道的设计和施工提供了参考依据。

Abstract: The Jinshazhou Tunnel of Wuhan\|Guangzhou High\|speed Rail Project is northwest of Guangzhou City. In order to assure the safety and the cost effectiveness of this tunnel during construction and operation, the lining parameters for the primary and quadric lining supports are studied. Based on the design codes and the site geotechnical conditions, the primary and quadric lining support parameters are obtained for the Class IV surrounding rock masses by using the Analogy Method. Then, the finite element analyses are performed on the same Class IV surrounding rock masses by considering the effect of groundwater. Therefore, the stress changes on the primary and quadric supporting structures can be predicted. These approaches provide a viable solution for the design and construction of this large cross\|section tunnel in an urban area.