Abstract：Abstract ： Research purposes ： The excavation of deep foundation will induce differential deformation to the nearby existing subway station, whereas the deformation due to different construction sequence has not been generally investigated. The comparison analysis of construction sequence on the regular pattern of deformation for the nearby existing subway station was conducted, which was based on one field case located in Changsha and numerical analysis. The deformation characteristic of retaining structure and main structure of nearby existing subway station was also analyzed for the zone excavated using bottom - up method and top - down inverse construction method at different excavation depth. Research conclusions:( 1 ) The lateral deformation of retaining structure increased gradually with increasing the excavation depth. (2) The deformation of nearby existing subway station at the zone excavated using bottom - up method was obviously larger than that at the zone using top - down inverse construction method. ( 3 ) The surface settlement induced by excavation was smaller using top - down inverse construction method, whereas the surface settlements for different construction sequence were in the range of safety and normally use requirements. (4) The research results can provide references for the design and construction of deep foundation nearby existing subway station.
向贤华. 基坑不同施作顺序引起邻近车站变形对比分析[J]. 铁道工程学报, 2015, 32(12): 80-85.
XIANG Xian - hua. Comparison Analysis of Construction Sequence of Deep Foundation on the Deformation of Nearby Existing Subway Station. Journal of Railway Engineering Society, 2015, 32(12): 80-85.
2015, Vol. 32 
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