建筑结构学报2012，Vol.33Issue(2)：135-141,7.
双线盾构长距离穿越深基坑底部引起地下连续墙沉降分析及控制措施
Settlement analysis and control measure of diaphragm wall caused by double-tube shield long-distance passing through under deep foundation bottom
摘要
Abstract
The double-tube shield tunnel from Tongji University to Guoquan Road metro station which passes longdistance parallel through the bottom of the under crossing foundation finally caused the settlement of the diaphragm wall. The passed through distance is 630 m. The distance between the tunnel and the diaphragm wall is about 2.0 m. The relationship between the settlement of the diaphragm wall and the angle Ф between the underground diaphragm wall bottom and tunnel bottom were analyzed by the monitoring data and Plaxis 3 D Tunnel numerical soft simulation. With the Ф becomes larger, diaphragm settlement increases. When Ф〈 0°, the underground continuous wall settlement is almost zero. When 0°〈Ф〈 32°, the maximum settlement is 5 mm. When 32°〈 Ф〈 51°, the maximum settlement is about 40 mm. When Ф 〉 51°, the settlement is greater than 40 mm. On the basis of three-dimensional model, the underground continuous wall settlement caused by the shield construction after the bottom floor is finished. The findings indicate that the bottom plate is very significant to control settlement. The research results turn out to be a very good application in the project. Finally, in the actual construction, grouting hole on the bottom floor effectively solve the settlement of bottom floor caused by the shield construction. The results may provide a reference for the future similar project design and construction.关键词
盾构/基坑/地下连续墙/有限元分析/沉降Key words
shield/foundation/diaphragm wall/FEA/settlement分类
建筑与水利引用本文复制引用
曾英俊,杨敏,熊巨华,孙庆,朱继文..双线盾构长距离穿越深基坑底部引起地下连续墙沉降分析及控制措施[J].建筑结构学报,2012,33(2):135-141,7.基金项目
国家自然科学基金项目（41172248）. （）
