土工基础

›› 2014, Vol. 28 ›› Issue (2): 43-46.

• 工程实录 • 上一篇    下一篇

南京地铁三号线隧道衬砌结构断面优化研究

张亮亮   

  1. (中国铁建第四勘察设计院集团有限公司 城地院地下工程所，武汉 430063)
  • 收稿日期:2013-02-20 出版日期:2014-04-21 发布日期:2014-04-25
  • 作者简介:张亮亮（1980-），男，高级工程师，研究方向为结构工程、岩土工程的科研和设计。

Cross Section of Lining Structure Optimization in Nanjing No. 3 Metro Line

ZHANG Liangliang   

  1. (Institution of Underground Engineering, China Railway SiYuan Survey and Design Group Co., Ltd, Wuhan 430063)
  • Received:2013-02-20 Online:2014-04-21 Published:2014-04-25

摘要： 以南京地铁三号线滨江路站~五塘村站矿山法区间为例，采用有限元结构分析软件，取最不利荷载组合，分析了隧道复合式衬砌结构的受力特征。结果表明，通过对隧道仰拱结构断面尺寸进行优化，即隧道边墙到仰拱顺接过度部分宜采用较小半径圆弧设计，可满足最不利水头下结构受力要求，以避免仰拱二衬受高水头作用而隆起的风险，且增加费用不大。

关键词: 南京地铁, 矿山法隧道, 复合式衬砌, 断面优化, 数值计算

Abstract: Studies of the performance of the tunnel lining structures under high water pressure is important to the optimization design of tunnel supporting structures. This paper presents a case history of the tunnel supporting study between stations Bingjiang Road and Wutang Village, Nanjing No. 3 Metro Line. The performance of the composite lining structure has numerically studied under the most unfavorable loading conditions. The results indicate that the cross section of the lining structure can be optimized. From the side wall to the top of the arch should be connected with circular arch with small radius so that the water pressures on the tunnel can be optimized. The small radius design also avoids the potential heave of the composite lining structure under the high water pressures. The resultant cost is not significant.

Key words: Nanjing Metro, Composite Lining, Composite lining；Crosssection Optimization, Numerical Analysis