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桩的承载能力由两部分组成即侧壁摩阻力和端阻力,对嵌入基岩中的端承桩来讲,承载力主要是靠端阻力即端承载力,侧壁摩阻力占的比重很小,因此一般在设计中不考虑。作为嵌入基岩中的钻孔灌注桩和较好持力层上的钻孔或挖孔灌注桩,孔底沉渣对端承桩承载力影响很大,当它超过规定厚度时
The bearing capacity of a pile is composed of two parts: the frictional resistance of the side wall and the end resistance. In terms of end-bearing piles embedded in the bedrock, the bearing capacity mainly depends on the end resistance, that is, the end bearing capacity, and the frictional resistance of the side wall occupies a small proportion. , so it is generally not considered in the design. As bored piles embedded in bedrock and boreholes or bored bored piles on better bearing layers, the bottom of the boreholes has a great influence on the bearing capacity of the end bearing piles when it exceeds the specified thickness.