通过收集、整理大量钻孔灌注桩静载试验数据并分析了钻孔灌注嵌岩桩与钻孔灌注非嵌岩桩在竖向荷载作用下的承载特性.针对目前许多关于嵌岩桩承载力设计关于在桩端嵌入完整或较完整硬质岩层中时,由于地质条件、钻孔技术及设计要求等诸多因素的影响,不考虑其桩侧阻力或桩侧土层阻力而直接按照桩端岩层阻力来计算桩的承载力而提出建议.指明两者在桩顶、桩底沉降变化,桩身压缩比及单桩承载力计算等方面的相同与不同之处,简明阐述在设计和计算单桩承载力时应考虑的因素并提出工程指导意义.%Based on collecting and arranging the data of static load test of a large number of bored piles,the load bearing characteristics of bored pile and bored pile under vertical load are analyzed.At present,many designs about bearing capacity of rocksocketed piles,when the pile end is embedded into intact or more complete hard rockpile,because of the influence of geological conditions,drilling technology and design requirements and other factors,don't consider the lateral resistance of the pile or pile side soil resistance but directly calculates the pile bearing capacity according to the pile rock resistance.This paper proposes suggestions in view of this situation.The similarities and differences between the two in the pile top,pile settlement change,pile compression ratio and single pile bearing capacity calculation and other aspects are pointed out.The factors that should be taken into account when designing and calculating the bearing capacity of single pile are briefly described and the engineering guidance significance is put forward.
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