区域地铁抗浮设防水位设计技术体系与应用研究

Construction and application of the technical system of regional groundwater level for the anti-floating design of subway

近30年来,我国城市地铁系统得到了空前发展。如何合理有效地确定抗浮设防水位将直接影响到地铁的工程造价、施工难度及运营安全,已成为地铁工程抗浮设计的关键问题。在分析地下工程抗浮设防水位研究现状及其设计方法的基础上,从定量化研究的角度出发,阐述了目前抗浮设防水位研究中存在的不足和亟需解决的关键科学问题,提出了基于数值模拟的区域地铁抗浮设防水位设计技术体系,并应用于东北某市地铁规划线路的抗浮设防水位设计,由此验证数值模拟方法在区域地铁抗浮设计应用中的适用性。本文研究可为其他城市地铁工程的抗浮设防水位设计提供重要技术支撑。

In the past three decades,the subway system in China has been developed unprecedentedly.How to determine the groundwater level rationally to prevent floating of subway has become a key problem in anti-floating design of subway engineering,which directly affects the cost,construction difficulty and operation safety.Based on the analysis of the present research on anti-floating water level and design method,the shortcomings and key scientific problems in the water level to prevent of up-floating research is pointed out through quantitative method.A design system to determine the regional anti-floating water level for subway projects is proposed based on numerical simulation method.The method is verified by a anti-floating design in a subway project in Northeast China.This study could be referred for the determination of anti-floating water level in the other subway projects.