摘要
盾构法施工引起的地层移动和地表沉降是盾构隧道设计和施工中非常关注的问题.以杭州地铁1号线某盾构区间的双线平行隧道为背景,采用三维快速拉格朗日法,对不同应力释放率及轴线间距下的隧道施工进行了仿真计算,预测与分析了先建隧道、后建隧道引起的横向地表沉降及总的横向地表沉降.将计算结果用Peck公式进行了拟合,并与实测值进行了对比,均较为吻合.仿真计算结论可供后期施工参考.
The soil displacement and ground surface settlement induced by shield construction is the main issue during shield tunnel design and construction. Based on the practice of a double- tube parallel shield tunneling section in The No. 1 Line of the Hangzhou Subway, the excavation process of its launching section was simulated by using the three-dimensional fast lagrangian analysis of continua method （FLAC3D） under the conditions of different stress release ratios and axis distances. Then, the transverse subsidence of ground surface induced by the pre-constructed tunnel and the following-constructed one, as well as the total transverse subsidence of ground surface were analyzed and predicted. Finally, it is comparatively identical when the calculation results are both fit with the settlement curve of Peck formulae and compared with the measured values, and the conclusions of the simulation can be the reference to the later conclusion.
出处
《浙江工业大学学报》
CAS
2013年第3期300-303,308,共5页
Journal of Zhejiang University of Technology
基金
浙江省自然科学基金资助项目(Y110094)
浙江省重点创新团队及水利河口研究院省重点实验室资助项目(FZ1102)
浙江省科技厅基金资助项目(2012C21105)
