The research on the characteristics of static pressure piles is mostly concentrated in model tests and numerical simulation,and cannot accurately reflect the problems of the real sinking piles of static piles accurately.Based on the degeneration of the pile side motorcycle resistance,this paper conducted a large-scale static stake pile section segmentation pile test.Based on the degradation theory of pile side friction resistance,coupling and stacking of segmented test data is achieved to analyze the stress characteristics of the pile sinking process and explore the influence of pile side friction resistance degradation on the pile sinking effect.As a result,the test results showed that the pressure pile force increased evenly with the depth of the penetration,and the degeneration of the pile side rubbing resistance was less impact on the pressure pile force;Well,the difference in the difference at the pile section connection is basically zero;the resistance power of the pile side is gradually exerted as the depth of the sinking piles,and the overall linearity of the curve is better;The pile force accounts for relatively high,maintaining above 50%.In this paper,the segmented pile sinking test of large scale hydrostatic pile was carried out by indoor test method,and the pile sedimentation characteristics of hydrostatic pile were studied by combining the pile side friction resistance degradation theory,which provides a new idea for the future study of the sinking characteristics of hydrostatic pile.
关键词
桩侧摩阻力退化/静压桩/分段沉桩/受力特性/叠加耦合
Key words
pile side friction resistance degradation/jacked pile/subsection of pile/mechanical characteristics/superposition of coupling
维普
万方数据