水文地质工程地质2025，Vol.52Issue(5)：119-126,8.DOI:10.16030/j.cnki.issn.1000-3665.202406007
竖向电渗法增强桩力学特性分析
Mechanical properties of vertical electroosmosis reinforced pile
摘要
Abstract
To investigate the optimization effect of electroosmotic direction on pile foundations,the traditional horizontal electroosmosis was rotated by 90° to form vertical electroosmosis,which was then integrated with the pile foundation to create a vertical electroosmosis reinforced pile.Through model testing,two vertical electroosmosis directions,that is bottom-up and top-down,were established,along with a control group without electroosmosis.The variations in soil moisture content,water pumping capacity,earth pressure,soil settlement,and shear strength were analyzed during the electroosmosis process.Static load tests and direct shear tests were employed to evaluate the effectiveness of the soft soil reinforcement.The experimental results demonstrate that vertical electroosmosis significantly increased both the shear strength and the bearing capacity of silty soft soil.Specifically,the bottom-up and top-down electroosmosis resulted in shear strength increases by 273.5％and 326.5％,respectively,while the pile bearing capacity improved by 183.3％and 230.6％,respectively.The top-down electroosmosis exhibited the most favorable results.Additionally,due to the faster drainage rate,the settlement of the soil surrounding the pile exceeded that of the soil beneath it,generating approximately 0.5 kPa of negative skin friction.This led to a 41.0％greater settlement in the top-down group compared to the bottom-up group,corresponding to a 16.7％higher bearing capacity.The research findings provide valuable insights for further optimizing the application of electroosmosis in pile foundation reinforcement.关键词
竖向电渗增强桩/模型试验/软基处理/抗剪强度/负摩阻力Key words
vertical electroosmosis reinforced pile/model test/soft foundation treatment/shear strength/negative friction分类
建筑与水利引用本文复制引用
库光依,卢忆晗,齐昌广,张智超,崔允亮..竖向电渗法增强桩力学特性分析[J].水文地质工程地质,2025,52(5):119-126,8.基金项目
国家自然科学基金项目(41977259) （41977259）
浙江省自然科学基金项目(LY21E080007) （LY21E080007）
福建省自然科学基金杰出青年项目(2023J06039) （2023J06039）
