土工基础

›› 2017, Vol. 31 ›› Issue (2): 161-165.

• 工程实录 • 上一篇    下一篇

长江I级阶地地下三层地铁车站抗浮设计探讨

李建军   

  1. (中铁第四勘察设计院集团有限公司，武汉 430063)
  • 收稿日期:2016-04-08 修回日期:2016-04-18 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:李建军（1986-），男，硕士，工程师，研究方向为地铁结构及基坑工程等。

Buoyancy Resistance Design of a Three-Story Underground Subway -Station in the First Terrace of Yangtze River

LI Jianjun   

  1. (China Railway Siyuan Survey and Design Group Co., Wuhan 430063)
  • Received:2016-04-08 Revised:2016-04-18 Online:2017-04-20 Published:2017-05-04

摘要： 结合武汉某长江I级阶地地下三层地铁车站的抗浮设计，纠正了若干抗浮计算中的常见错误。在只考虑车站主体结构自重、考虑围护结构自重后、考虑围护结构侧摩阻力三种情况下分别分析得到了临界配重厚度、临界覆土厚度、临界车站宽度、临界车站总高、临界墙趾长度、临界抗浮桩长、中板临界开洞率等一系列临界值，并根据工程实践一一小结。提出了若干需进一步探讨的问题。可供工程实践中地下三层地铁车站的抗浮设计参考。

关键词: 地铁车站, 抗浮措施, 临界值, 侧摩阻力, 需探讨的问题

Abstract: This paper presents the buoyancy resistance design results for a threestory underground subway station in the first terrace of Yangtze River. Common mistakes in the buoyancy resistance estimation are also discussed. The resultant critical values in the buoyancy analysis are obtained under three different conditions: only selfweight of the station structure, weight of the main and the ancillary structures as well as the selfweight and the side friction of all structures.  These crucial values are thickness of the additional weight, thickness of the overburden soil, width of the station structure, length of the toe of the retaining wall, length of the uplifting pile and the spacing of the weep holes on the side walls.

Key words: Subway Stations, Buoyancy Resistance Measures, Critical Values, Side Friction, Further Discussions