The bearing capacity of super-long and large-diameter bored pile tip is influenced by the facts including construction process, depth effect, size effect and so on.
阐述了超长大直径钻孔灌注桩桩端承载力的影响因素，包括施工工艺、深度效应和尺寸效应等。
When the bearing stratum at the tip of bored pile is sandy soil stratum, the method of pile tip pressure grouting can effectively improve the bearing capacity of single piles.
泥浆护壁钻孔灌注桩当桩端持力层为砂土层等非岩石层时，通过桩底压密灌浆能有效地提高单桩承载力。
The bearing capacity and settlement of the piles with sediment in pile tip is reduced as the thickness of sediment increases.
含有沉渣的桩基随着沉渣厚度的增加其承载力也不断降低，桩沉降越来越大。
It is showed that the pile spacing has a great influence on the ultimate bearing capacity of pile tip.
该公式反映出群桩间距对极限承载力的影响。
When only enhancing the pile stiffness or increasing the length-diameter ratio, no remarkable improvement appears in the proportion shared by tip and bearing capacity of pile.
在其他条件不变时，仅提高桩身刚度或长径比，对桩端分担比例或桩体承载性能的提高并不显著。
The length of short pile is decided by soft soil strength of short pile tip in terms of analysis on bearing capacity of short pile.
在分析短桩加固区承载力内涵的基础上，提出了短桩长度由桩端处软土强度决定的设计标准。
The length of short pile is decided by soft soil strength of short pile tip in terms of analysis on bearing capacity of short pile.
在分析短桩加固区承载力内涵的基础上，提出了短桩长度由桩端处软土强度决定的设计标准。
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