岩土工程学报2026，Vol.48Issue(z2)：68-73,6.DOI:10.11779/CJGE2026S20025
劲性复合桩抗拔特性及其群桩效应研究
Study on uplift characteristics and group effects of strength composite piles
摘要
Abstract
Strength composite piles are newly developed pile types recently.Current research primarily focuses on their compressive load-bearing performance,while the characteristics of strength composite piles under uplift forces and their group pile effects remain uncertain.In light of this,the factors affecting the uplift characteristics of strength composite piles and their group effects are studied through field tests and numerical simulations.The results indicate that compared to conventional piles,the side friction of strength composite piles increases by about 80%.The increase in pile length,pipe pile diameter and cement-soil modulus can effectively improve the ultimate uplift-bearing capacity of strength composite piles.The group pile effects of strength composite piles subjected to uplift load are significant.Increasing the pile length has the most significant improvement measure for improving the group pile effect.As a force transmitting component in strength composite piles,cement soil piles form an important pathway for shear stress transmission through their internal and external interfaces with pipe piles and soils around the piles.Improving the performance of cement soil piles can increase their bearing capacity to a certain extent.关键词
劲性复合桩/上拔荷载/群桩效应/荷载传递机理/水泥土Key words
strength composite pile/uplift load/group pile effect/load transfer mechanism/cement-mixed soil分类
建筑与水利引用本文复制引用
朱锐,宋著,汪煜策,杨佳晨,周峰..劲性复合桩抗拔特性及其群桩效应研究[J].岩土工程学报,2026,48(z2):68-73,6.基金项目
国家自然科学基金项目(52408372,52278357) （52408372,52278357）
江苏省青年科技人才托举工程项目(JSTJ-2024-157) （JSTJ-2024-157）
爆炸冲击防灾减灾全国重点实验室项目(20260230) （20260230）
