(上海岩土工程勘察设计研究院有限公司， 上海 200031)

［摘要］通过收集上海及其周边地区的工程试桩资料和静力触探资料，对现行上海规范中应用静力触探成果指标估算预制桩单桩极限承载力的计算方法精度进行检验，通过对现行规范中各项计算参数的对比分析，提出了应用静力触探成果指标估算预制桩单桩极限承载力的改进计算方法。通过工程实例验证表明，改进的计算方法所计算得到的预制桩单桩极限承载力结果与工程实测值更加接近，提高了应用静力触探成果指标估算预制桩单桩极限承载力的计算精度。

［关键词］预制桩； 极限承载力； 静力触探法； 多元线性回归

中图分类号： TU47    文献标识码： A    文章编号： 1002-848X(2015)S2-0217-04

Study on ultimate bearing capacity calculation of pile based on static cone penetration test

Lu Jiafeng, Gu Guorong, Yang Shifei

(Shanghai Geotechnical Investigations & Design Institute Co., Ltd., Shanghai 200031, China)

Abstract: Using static cone penetration test data to calculate the ultimate bearing capacity of pile is recommended by many standards in China. In this study, many pile testing data of engineering in Shanghai and around area were collected to figure out the accuracy of the recommended calculation method. After the calculation and analysis, an improved calculation method was proposed to improve the accuracy of ultimate bearing capacity calculation. And the result of this improved calculation method was proved to be closer to the value in the pile loading test. It means that the improved calculation method proposed in this study can provide more reliable estimation of ultimate bearing capacity of piles in engineering.

Keywords: precast pile; ultimate bearing capacity; static cone penetration test; multiple linear regression

*上海市科学技术委员会“上海市岩土工程专业技术服务平台”项目资助(14DZ2292800)。

作者简介：路家峰，硕士，Email：lujiafeng@live.com。