Experimental Study on Vertical Bearing Capacity of Bored Pile
In order to optimize the design scheme of lifting bored pile,the load transfer and mechanical characteristics of bored pile under ver-tical compressive load were studied in this paper.The results show that the maximum axial force of the pile body is located at the depth of 3m.When the load is 1 440 kN,the maximum axial force of the pile body is 1 205 kN.With the increase of pile top load,the maximum pile side resistance of pile body also increases,the maximum pile side resistance is 140kPa,and the maximum negative friction resistance reaches-82 kPa.When the pile top load increases from 160 kN to 1 600 kN,the increase of pile tip resistance reaches 860.2%.The ratio of pile tip resistance is first negatively correlated with pile tip load and then positively correlated with pile tip load.When the load reaches 1 600kN,the maximum displacement of pile top reaches 14.6mm.When unloading is 0kN,the displacement of pile top is 8.8mm.
Bored pileStatic load testBearing characteristicsPile end resistancePile side resistance
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