Monitoring and Analysis of A Deep Excavation in a Reclamation Area with Internal Strut Structure
In the reclamation area,the stratigraphy of the deep excavation area is complicated,and the ground water is closely connected with the seawater.The surrounding environment of the excavated area has strictive requirements.By using the moni-tored data in the entire excavation and internal supporting construction process in a nearshore reclaimed area,this paper analy-zes the patterns of the horizontal displacement of supporting structure,axial forces in the interior supports,the ground surface subsidence,the upheaving and settlement of the soldier piles.The results show that the maximum lateral displacement of the soldier pile occurs near the bottom of excavation in the vertical direction.The maximum lateral displacement along the edge of the excavation is at the middle of the edge.Improvement in the passive zones at the bottom of excavation can effectively reduce the horizontal displacement of the soldier piles below the excavation.The largest axial force in the horizontal bracing appears in the second vertical struct.In the same plane,the axial force in the middle of the excavation is obviously greater than that of the corner bracing.The ground subsidence around the excavated area increases with the increase of the excavation depth,and the surface subsidence is closely related to the lateral deformation of the soldier piles.
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万方数据
