东南大学学报（英文版）2022，Vol.38Issue(2)：166-170,5.DOI:10.3969/j.issn.1003-7985.2022.02.008
后压浆桩竖向承载力概率极限状态设计方法
Probabilistic limit state design method of the axial resistance of post grouting pile
摘要
Abstract
The reliability of post grouting pile axial resistance was studied by proposing a design method for its probabilistic limit state,which is represented by the partial coefficients of load,end,and side resistance.The hyperbolic,modified hyperbolic,and polynomial models were employed to predict the ultimate bearing capacity of test piles that were not loaded to damage in field tests.The results were used for the calculation and calibration of the reliability index.The reliability of the probabilistic limit state design method was verified by an engineering case.The results show that the prediction results obtained from the modified hyperbolic model are closest to those obtained through the static load test.The proposed corresponding values of total,side,and end resistance partial coefficients are 1.84,1.66,and 2.73 when the dead and live load partial coefficients are taken as 1.1 and 1.4,respectively.Meanwhile,the corresponding partial coefficients of total,side,and end resistance are 1.70,1.56,and 2.34 when the dead and live load partial coefficients are taken as 1.2 and 1.4,respectively.关键词
概率极限状态设计法/可靠性理论/后压浆桩/抗力分项系数Key words
probabilistic limit state design method/reliability theory/post grouting pile/total resistance partial coefficient分类
通用工业技术引用本文复制引用
张志彤,龚维明,解江,戴国亮,苏伟,乔晋飞..后压浆桩竖向承载力概率极限状态设计方法[J].东南大学学报（英文版）,2022,38(2):166-170,5.基金项目
The National Natural Science Foundation of China(No.51878160,52008100,52078128). （No.51878160,52008100,52078128）
