Study on Adaptability of Drilling with PHC Pipe Cased Pile under Static Pressure and Bearing Capacity Characteristics of Single Pile in Special Stratum of Nanning Basin
In order to study the adaptability of Drilling with PHC(Prestressed high strength concrete)Pipe Cased Pile under static pressure and single pile bearing characteristics in special stratum of Nanning Basin,the static load and low strain reflection wave method are tested on four Drilling with PHC Pipe Cased Pile under Static Pressuree with 800mm diameter.The results show that:the bearing capacity of the test piles in each stratum can meet the design requirements and all belong to ClassⅠpiles,and the rebound rate of the pile body is high,which indicates that each test pile still has great bearing potential,the comprehensive enhancement coefficient of single-pile bearing capacity in each stratum without destructive test is more than 1.00,and the empirical formula for determining the vertical bearing capacity of a single-pile of Drilling with PHC Pipe Cased Pile under Static Pressure should be multiplied by the corresponding enhancement coefficient.Based on the above research,the process of Drilling with PHC Pipe Cased Pile under Static Pressure is applied to actual projects,and the acceptance test shows that the pile body quality of the inspected foundation piles of each project is intact,and the bearing capacity meets the design requirements,and still has a certain bearing capacity surplus,and the good practical engineering application effect shows that this process has good applicability and high promotion and use value.
Drilling with PHC Pipe Cased Pile under Static PressureStatic load testLow strain gaugeSingle pile bearing capacityAdaptability
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