PHC桩在厚填土地基中受力特性的试验研究  

Experimental study on the mechanical characteristics of PHC pile in thick filled foundation

作　　者：丁琦 Ding Qi(Zhejiang Huayou Cobalt Company Limited,Jiaxing Zhejiang 314500,China)

机构地区：[1]浙江华友钴业股份有限公司,浙江嘉兴314500

出　　处：《山西建筑》2023年第13期101-105,共5页Shanxi Architecture

摘　　要：为解决松散厚层填土非均匀软弱地基上预应力高强混凝土(PHC)管桩的受力特性问题,通过现场试验获得了PHC桩的竖向承载力、水平承载力等实测值,并通过线性规划方法分析获得了土层桩侧摩阻力特征值fs和桩端阻力特征值fp实测值。经对比分析,对试验结果采用线性规划方法来确定土层参数比较可靠。由静载实测承载力结合桩侧阻力、桩端阻力与总阻力的比值,反算场地地层差数,可更精确地指导后续设计。In order to obtain the mechanical characteristics of Prestressed High-strength Concrete(PHC)pipe piles on the non-uniform soft foundation of loose thick fill,the measured values of the vertical bearing capacity and horizontal bearing capacity of PHC piles were obtained through field tests,and the measured values of the characteristic value f s of pile side friction resistance and the characteristic value f p of pile tip resistance in soil layer were obtained through linear programming analysis.Through comparative analysis,it is reliable to use linear programming method to determine soil layer parameters based on test results.By combining the measured bearing capacity under static load with the ratio of pile side resistance,pile end resistance,and total resistance,the reverse calculation of the site formation difference can provide more accurate guidance for subsequent design.

关 键 词：厚填土 预应力高强混凝土管桩(PHC桩) 强夯法 竖向承载力 水平承载力 

分 类 号：TU447[建筑科学—岩土工程]