The numerical simulation method based on software FLAC3D for the large-diameter long pile is discussed, and the influences of parameters of soil-pile interface on the numerical results are analyzed.
基于FLAC3D数值分析软件，探讨了大直径长桩的数值模拟方法，分析了桩土间接触面参数对数值计算结果的影响。
The bearing characteristic of large diameter and super-long pile in quaternary soil layer is analyzed in the case of no good bearing layer (such as rock, sand and cobble layer) and no ripe experience.
在没有良好的持力层（基岩或砂、卵石层）和成熟经验可借鉴的情况下，对第四系土层大直径超长桩（钻孔灌注桩）的承载特性进行了分析。
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。
The current standard mainly establishes at the aim of short intermediate pile, the design method of the long and large diameter bored piles is less targeted and its applicability is not wide.
当前的规范主要是针对中短桩建立而成的，对于超长大直径钻孔灌注桩的设计，其针对性不强，存在适应性问题。
The research on the operating technology and load transfer mechanism of super long-large diameter bored pile;
通过土钉抗拔力学模型探讨了高压注浆土钉的抗拔荷载传递机理，简单介绍了其施工工艺。
The research on the operating technology and load transfer mechanism of super long-large diameter bored pile;
通过土钉抗拔力学模型探讨了高压注浆土钉的抗拔荷载传递机理，简单介绍了其施工工艺。
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