Abstract：
Based on the three-dimensional model established by using the ABAQUS finite element software, the influence of pit bottom reinforcement in passive zone and internal braced deep foundation pits on deformation of foundation pit was studied. The influence of different reinforcement ways (the full bottom pit, skirt edge, ribbon and grille) on the pit bottom upheaval and lateral displacement of the retaining structure were discussed. And combined with engineering examples, the model is verified. The results showed that the soil reinforcement can effectively inhibit the action of the foundation-pit, and the inhibitory effect from large to small is full pit bottom, grille, ribbon, skirt edge reinforcement. At the same time, skirt can effectively reduce the pit bottom upheaval within the scope of soil reinforcement. But for the lateral displacement of the retaining structure, the four reinforcement ways have little difference, mainly affecting the last lateral displacement of retaining structure.
XIONG Chun-bao,GAO Peng,TIAN Li-yun et al. STUDY ON INFLUENCE OF DIFFERENT WAYS OF PIT BOTTOM REINFORCEMENT ON DEFORMATION OF DEEP FOUNDATION PIT[J]. Architecture Technology, 2015, 46(6): 486-490.
