Application of YSPR Rectangular Prestressed High-strength Concrete Supporting Pile in Deep Foundation Pit Support
According to the characteristics of deep foundation pit support in a high groundwater level sand layer,a new support form is adopted,that is,YSPR prestressed concrete solid rectangular support pile is inserted into the triaxial cement mixing pile(PCMW method).The PCMW method has the functions of retaining soil and stopping water,and has the advantages of fast construction speed,low cost,and small deformation.Combined with a deep foundation pit project in Nanjing,the feasibility of applying the PCMW method in deep foundation pit support engineering of sand layer with high groundwater level is confirmed by the data of in-situ monitoring of deep soil displacement and surrounding road settlement.
PCMW methodYSPR rectangular prestressed high-strength concrete supporting pilesandy soildeep foundation pit support
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