Abstract：Research purposes:Based on the shield engineering of some interval tunnel in Beijing subway line eight，it used FLAC simulation to predict the deformation laws of surface and its nearby building caused by shield construction， the goal is to offer a technological support for the determination of reasonable construction parameters and the establishment of the on-site monitoring project when safety through surface buildings in shield tunnel construction.
Research conclusions:(1)Numerical simulation was adopted to investigate the laws of surface deformation caused by the tunnel shield construction of Beijing subway，the lateral ground settlement curve is basically symmetrical in horizontal direction，and buildings have greater influence on surface deformation on the surrounding area compared with its region. The maximum differential settlement is 8. 09mm.(2)According to the prediction results of numerical simulation，the Bi-directional tunnel excavation affected range of surface is 36m that mainly in tunnel center. The excavation face affected area is 24m in the frontage and 20 m in the rear, so it should be mainly monitored during construction.(3)The practice shows that the measured curves are identical with the simulation curves. The numerical simulation is effective means for predicting the laws of surface and adjacent building deformation caused by shield construction.(4)The research results can be used to make adjacent building deformation control scheme caused by shield construction.
Zheng Baocai , Cheng Wenbin , Hu Guowei. Analysis and Monitoring of Ground Subsidence Caused by Excavation of Adjacent and Crossing Metro Tunnel with Shallow- depth and Subsurface Excavation Method[J].Journal of Railway Engineering Society , 2009 (11) : 72-76.
Ren Jianxi，Wang Jinhua , Zhang Yinhe , etc. Study on Prediction of Surface Deformation during Shield Construction of Subway in Loess Stratum[J].Journal of Railway Engineering Society , 2011(11):93-97.
Luo Hanbin, Li Weiming, Zhou Guanghui. Analysis of Ground Settlement Caused by Shield Construction of Wuhan Metro with Non-equal Interval Model[J]. Journal of Railway Engineering Society ,2011(1):肠-91.
Li Guocheng,Ding Lieyun. Ground Settlement Induced by Shield Construction of Wuhan Yangtze River Tunnel [J].Journal of Railway Engineering Society , 2008 ( 5): 59-62.
[7]王金华.西安地铁隧道盾构施工地表变形规律与控制技术研究[D].西安:西安科技大学，2011.
Wang Jinhua. Study on the Laws of Surface Deformation Caused by Shield Construction and Control Technology of Xi'an Subway Tunnel[D].Xi' an : Xi' an University of Science and Technology , 2011.
Song Weidong, Chen Ruihong, etc. Numerical Analysis of Earth Pressure Balance Shield Tunneling at Guomao-Shuangjing Interzone of Beijing Subway Line No. 10[J].Chinese Journal of Rock Mechanics and Engineering , 2008 ( S2 ) : 3041-3047.
[9]柳厚祥.地铁隧道盾构施工诱发地层移动机理分析与控制研究[D].西安:西安理工大学，2008.
Liu Houxiang. The Mechanism Analysis and Control of Ground Movements Induced by Subway Shield Tunneling Construction [ D ].Xi' an : Xi' an University of Technology,2008.
2014, Vol. 31 
版权所有 © 2014 《铁道工程学报》编辑部