华南地震2024，Vol.44Issue(1)：119-125,7.DOI:10.13512/j.hndz.2024.01.14
孔内深层强夯复合地基桩土应力比试验研究
Experimental Study on Pile-soil Stress Ratio of the Compos-ite Foundation with Down-hole Dynamic Compaction
摘要
Abstract
By conducting on-site static load tests and pile-soil stress tests on the composite foundation with down-hole dynamic compaction,the average pile top stress,soil stress between piles,pile-soil stress ratio,load sharing ratio,and their variation patterns of the deep dynamic compaction composite foundation in the hole under different loads were obtained.The test results show that:the soil between piles of the deep dynamic compaction composite foundation in the hole bears the main upper load,accounting for about 50%-63%.As the load increases,the proportion of load borne by the soil between piles gradually increases;for the deep dynamic compaction composite foundation in the hole,the pile-soil stress ratio decreases with the increase of load,with a value between 2 and 5;for foundation with cohesive plain soil filling,the bearing capacity of the deep dynamic compaction composite foundation in the hole after treatment can be increased by 220%compared with that before treatment.关键词
孔内深层强夯/复合地基/桩土应力比/桩间土应力/地基承载力/荷载分担比Key words
Down-hole dynamic compaction/Composite foundation/Pile-soil stress ratio/Soil stress between piles/Foundation bearing capacity/Load sharing ratio分类
建筑与水利引用本文复制引用
吕文龙,林逸峰,付强..孔内深层强夯复合地基桩土应力比试验研究[J].华南地震,2024,44(1):119-125,7.基金项目
住房与城乡建设部科技计划资助项目(2017-k10-006) （2017-k10-006）
