Abstract：Research purposes: As it is very difficult to construct the deep foundation pit of a metro transfer station，it is very important to maintain the structure safety and stability． According to the engineering geological conditions，the surrounding buildings and the process characteristics of one metro transfer station，the appropriate supporting scheme and the horizontal support system were selected． Based on the field test，the change laws of the horizontal displacement of guard pile for the foundation pit and the axial force of the steel support were analyzed to draw the helpful conclusion on the supporting system for the deep foundation pit of metro transfer station to provide the reference to the similar works．
Research conclusions: In the process of the excavation of the foundation，the deformation of guard pile increased with the increase of the excavation depth． The maximum deformation of the guard pile appeared in the middle － low part of the excavation depth． The place in where the maximum deformation appeared shifted down with the increase of the excavation depth． The supporting axial force increased largely at the beginning，but it varied a little with the excavation of the foundation pit and installation of the next support． The tested axial force of the various supports during construction was to the 70% of the design value．
黄胜平1韩明华2. 地铁换乘车站深基坑支护体系测试研究[J]. 铁道工程学报, 2012, 29(5): 58-62.
HUANG Sheng － ping 1,HAN Ming － hua2. Study on Test for Supporting System for Deep Foundation Pit of Metro Transfer Station. 铁道工程学报, 2012, 29(5): 58-62.
Huo Runke，Yan Mingyuan，Song Zhanping． The Monitoring and Numerical Anaysis of Deep Foundation in Subway Station［J］． Journal of Railway Engineering Society，2011( 5) : 81 － 85．
2012, Vol. 29 
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