Research on Pile-Soil Interaction Modes of Vibro-Sunk Steel Pipe Piles Based on Load Tests
Vibro-sinking is a relatively new and innovative precast pile construction technique that has received little attention in research on the pile-soil interaction of pile foundations,particularly for steel pipe piles.To address this issue,this study employed a slow single pile vertical compression static load test to investigate the load-bearing capacity variation of single vibro-sunk steel pipe piles.Based on four possible pile-soil interaction modes,the vertical ultimate bearing capacity of the pile was calculated using the mechanical equilibrium method,with adjustments made according to vibro-sinking influences in accordance with regulatory guidelines.By comparing experimental results with theoretical calculations,this study reveals the pile-soil interaction characteristics of steel pipe piles under vibro-sinking,with implications for the calculation of single pile ultimate bearing capacity in vibro-sinking pile applications.These findings provide valuable insights for geotechnical engineers and other professionals involved in pile foundation design and construction.
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