岩土工程勘察中桩基参数的综合取值方法  

The method of comprehensive scoring of pile foundation parameters in geotechnical engineering investigation

作　　者：张学飞 Zhang Xuefei(Geotechnical Engineering Application Technology Research Center,Jiangsu Geology&Mineral Exploration Bureau,Zhenjiang 212021,Jiangsu,China;Jiangsu Institute of Geotechnical Engineering Survey and Design,Zhenjiang 212021,Jiangsu,China)

机构地区：[1]江苏省地矿局岩土工程应用技术研究中心,江苏镇江212021 [2]江苏省岩土工程勘察设计研究院,江苏镇江212021

出　　处：《地质学刊》2021年第1期107-112,共6页Journal of Geology

基　　金：江苏省地质矿产勘查科技创新平台项目“岩土工程应用技术研究”(苏地矿发[2019]108号)。

摘　　要：桩基础勘察中采用综合取值法提供的各土层的桩侧极限摩阻力和桩端极限端阻力,在单桩竖向极限承载力静载荷破坏性试验检测中得到验证,用该方法提供的桩基参数能够满足设计对单桩承载力特征值的要求。从工程桩破坏性试验的角度再次对该方法提供的桩基参数进行论证,采用反向对比计算,结果表明这种取值方法提供的桩基参数较为接近土层的真实应力状态。The ultimate pile side friction resistance and ultimate pile tip resistance of each soil layer provided by the comprehensive scoring method in the pile foundation investigation have been verified in the single pile vertical ultimate bearing capacity static load destructive test,and the pile foundation parameters provided by this method can meet the design requirements for the characteristic value of single pile bearing capacity.In this paper,the pile foundation parameters provided by this method are demonstrated again from the view of the destructive test of engineering piles,and the results show that the pile foundation parameters provided are close to the real stress state of soil layer by the reverse comparison calculation.

关 键 词：桩侧极限摩阻力 桩端极限端阻力 单桩竖向极限承载力 综合取值法 土层 

分 类 号：P642.11[天文地球—工程地质学] TU473.12[天文地球—地质矿产勘探]