Application of Combined Support System of Perforated Pile and Construction Pile in Coastal Deep FoundationPit Engineering
Based on a project in the coastal area of Fujian Province,this paper makes an in-depth analysis on the construction technology of the combined support system of punched pile and construction pile in the deep foundation pit along the coast.The practice shows that the displace-ment and deformation around the foundation pit meet the design value,which indicates that the deformation of the supporting structure and the displacement control of the pit have achieved good results.In addition,28 days after the completion of construction,the drilling core sampling of the punched pile was carried out,and its strength reached 1.8 MPa,and the integrity of the punched pile and the construction pile can be obvi-ously observed during the core drilling process,and no water seepage phenomenon.
Coastal areaDeep foundation pit engineeringPerforated pileConstruction pileDeflection
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