摘要
某码头堆场软土地基发生了推移,在典型区采用CFG桩网复合地基进行加固。通过CFG桩离心模型试验和现场静载试验,研究了CFG桩单桩承载性状,对比分析了离心模型试验和现场静载试验的单桩承载变形差异,并与规范方法计算的单桩竖向极限承载力进行了比较。结果表明,离心模型试验和现场静载试验的Q-s曲线均存在比较明显的差异,离心模型试验得出的单桩极限承载力大于现场静载试验,两者的最大试验荷载基本一致,单桩竖向极限承载力计算值低于离心模型和现场静载试验值。
For the soft soil foundation slipped in the storage yard of a wharf,the composite foundation with CFG pile net is used for reinforcement in typical zone.The centrifugal model tests and field static load tests are carried out to study the bearing behavior of CFG pile.The bearing deformation difference of single pile between the centrifugal model tests and the field static load tests is compared and analyzed.The test results of the vertical ultimate bearing capacity of single pile are compared with the calculated ones by the method recommended by China's technical code for composit foundation.The results show that there are obvious differences between the Q-s curves of the centrifugal model tests and field static load tests.The ultimate bearing capacity of single pile of the centrifugal model tests is greater than that of the field static load tests,and their maximum test loads are basically the same.The calculated values of the vertical ultimate bearing capacity of single pile are lower than those of the centrifugal model tests and field static load tests.
作者
王年香
刘超
林显才
曹昌浩
连长秋
WANG Nian-xiang;LIU Chao;LIN Xian-cai;CAO Chang-hao;LIAN Chang-qiu(Geotechnical Engineering Department,Nanjing Hydraulic Research Institute,Nanjing 210024,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing 210029,China;Zhanjiang Port(Group)Co.LTD,Zhanjiang 524068,China;Guangdong Province Planning and Design Institute for Water Transportation Co.LTD,Guangzhou 510050,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2022年第S02期6-10,共5页
Chinese Journal of Geotechnical Engineering
基金
中央级公益性科研院所基本科研业务费专项资金项目(Y321006,Y321007)
关键词
CFG桩
单桩承载力
离心模型试验
现场静载试验
CFG pile
bearing capacity of single pile
centrifugal model test
field static load test
