改进GAP法盾构隧道开挖地表沉降预测  

Prediction of ground settlement induced by shield excavation based on improved GAP method

作　　者：陶连金[1] 管诚[1] 张印涛 李文博[1] 

机构地区：[1]北京工业大学岩土与地下工程研究所,北京100124 [2]中国民航机场建设集团公司规划设计总院,北京100101

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第2期166-169,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：北京市自然科学基金重点资助项目(8111001);北京市教委重点基金资助项目(JB004015200901);国家"973"课题基金资助项目(2007CB714203)

摘　　要：针对盾构隧道开挖引起的地表沉降问题,基于GAP法模型的基本原理,通过对该模型的改进,借助FLAC2D进行数值分析,对盾构隧道的地表沉降规律进行了研究.得出了同一盾构直径随着隧道埋深增加的情况下,地表最大沉降值逐渐减小、地表沉降槽逐渐变宽的规律,且隧道埋深和地表最大沉降值存在某种线性关系.该成果对盾构隧道开挖引起的地表沉降分析具有一定的参考价值和指导意义.To predict the ground settlement caused by shield tunneling, based on the GAP principle and improved model, this study investigates the characteristics of the ground settlement induced by shield excavation using FLAC2D numerical analysis method. The study results show that with the same shield diameter, when the tunnel depth increases, the maximum surface settlement gradually decreases and the settlement tank gradually widens. There is a linear relationship between tunnel depth and maximum surface settlement. This study results have some reference value and significance on the ground settlement analysis caused by shield tunneling.

关 键 词：盾构隧道 地表沉降 GAP法 合理埋深 数值模拟 沉降槽 地层损失 沉降预测 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]