CAJ | 학술논문

利用自行研制的一套软土电化学成桩加固的室内模型试验装置,开展系统的模型试验,成功再现铁质胶结成桩加固的整个物理化学过程,弄清胶结桩体组成结构特征,并通过加固土体电流、电阻、盐度的跟踪监测,探讨电化学成桩加固的电解特性及主要控制参数.在此基础上,开展微型贯入试验、室内平板载荷试验、崩解试验,对胶结桩体强度分布规律、承载力特性和水稳性进行研究.研究结果表明,电化学胶结桩范围为电极直径的8~12倍,强度随与电极距离的增大而逐渐减小,胶结核心层和影响层组成之间存在一明显的强度突变面,胶结桩–土复合地基的承载力和变形模量较加固前提高约10倍,并具有很好的水稳性.
이용자행연제적일투연토전화학성장가고적실내모형시험장치,개전계통적모형시험,성공재현철질효결성장가고적정개물이화학과정,롱청효결장체조성결구특정,병통과가고토체전류、전조、염도적근종감측,탐토전화학성장가고적전해특성급주요공제삼수.재차기출상,개전미형관입시험、실내평판재하시험、붕해시험,대효결장체강도분포규률、승재력특성화수은성진행연구.연구결과표명,전화학효결장범위위전겁직경적8~12배,강도수여전겁거리적증대이축점감소,효결핵심층화영향층조성지간존재일명현적강도돌변면,효결장–토복합지기적승재력화변형모량교가고전제고약10배,병구유흔호적수은성.
A set of laboratory model test equipment for electrochemical reinforcement of soft soil is designed to carry out a chain of model tests,the whole physical and chemical processes of ferruginous cemented piles are reconstructed,and structural features of cement piles are clarified. The electrochemical characteristics and the main control parameters of the electrolytic reinforcement in the pile are discussed through tracking and monitoring of current,resistance and salinity of the reinforced soil. On this base,the research on the strengthen distribution law,load capacity property and water stability is made though the micro-penetration test,indoor plate loading test and disintegration test. The results show that,the ranges of ferruginous cemented piles are respectively 8 times and 12 times thickness of electrode diameter. The strength of cemented soil is inversely proportional to the diameter distance of electrode. There is strong discontinuous surface between the coral layer and the affected layer. The cemented ground load force and the deformation modulus are 10 times better than the former,and it has good water stability.