建筑嵌岩灌注桩单桩竖向承载力计算公式演变过程及适用性

STUDY ON EVOLUTION AND APPLICABILITY OF CALCULATION FORMULA FOR VERTICAL BEARING CAPACITY OF SINGLE PILE OF BUILDING ROCK-SOCKETED CAST-IN-SITU PILE

为研究建筑嵌岩灌注桩单桩竖向承载力计算公式的适用性与合理性,对嵌岩灌注桩单桩竖向承载力计算公式的演变进行了系统的归纳总结,对常用计算公式的适用性进行了深入分析,归纳出各计算公式承载力计算值的变化规律,划分出具体的变化区间,总结出每个公式在工程实际运用中存在的优势和不足,对在具体计算时如何选择和使用公式给出合理化建议,解决了在估算嵌岩灌注桩单桩竖向承载力时选择何种公式的问题。

In order to study the applicability and rationality of the calculation formula of single pile vertical bearing capacity of rock socketed cast-in-situ pile,the evolution of the calculation formula of single pile vertical bearing capacity of rock socketed cast-in-situ pile is systematically summarized,the applicability of common calculation formulas is deeply analyzed,the variation law of the calculation value of bearing capacity of each calculation formula is summarized,and the specific variation interval is divided.This paper summarizes the advantages and disadvantages of each formula in practical engineering application,gives reasonable suggestions on how to select and use the formula in specific calculation,and solves the problem of which formula to choose when estimating the vertical bearing capacity of single pile of rock socketed cast-in-situ pile.