土木工程与管理学报2025，Vol.42Issue(1)：27-33,7.DOI:10.13579/j.cnki.2095-0985.2025.20240050
固化土-微型桩复合地基桩-土应力比分析
Analysis of Pile-Soil Stress Ratio of Composite Foundation Reinforced by Solidified Soil-Micro Piles
摘要
Abstract
The combination of solidified soil layer and micro-pile composite foundation has strong ap-plicability to the treatment of soft soil foundation under the condition of subclear height.In order to study the effect of solidified layer on the pile-soil stress ratio of micro pile composite foundation,the stress and deformation of micro pile composite foundation under the load of embankment are analyzed.The lateral friction resistance is simplified into a two-section broken line.The upward penetration and downward deformation of the pile body are also considered.The depth of neutral surface(equal set-tling surface)of micro pile is deduced.The upper and lower settlements on the neutral plane are cal-culated,respectively.The pile-soil stress ratio of solidified soil-micro pile is solved according to the coordinated deformation relationship of solidified soil layer-pile-pile soil.The results show that the set-ting of solidified soil layer can effectively improve the bearing characteristics of micro pile composite foundation.When the length of the micro pile is long,using a piecewise function to correct the lateral friction resistance can better reflect the deformation and bearing characteristics of the long pile.关键词
复合地基/固化土/微型桩/桩-土应力比Key words
composite foundation/solidified soil/micro pile/pile-soil stress ratio分类
交通工程引用本文复制引用
张帅,王瑞春,朱绍东,郑媛媛,曹玉鹏..固化土-微型桩复合地基桩-土应力比分析[J].土木工程与管理学报,2025,42(1):27-33,7.基金项目
山东省自然科学基金(ZR2021ME068) （ZR2021ME068）
广东省住建厅科技创新计划(2022-K4-094918) （2022-K4-094918）
