工程地质学报Issue(6)：1039-1045,7.DOI:10.13544/j.cnki.jeg.2014.06.004
吹填超软土固结特性试验分析
CONSOLIDATION PROPERTY OF ULTRA SOFT SOIL
摘要
Abstract
This paper determines the consolidation characteristics and the influence of water content and load ratio on the coefficient of secondary consolidation of hydraulic fill ultra soft soil in Tianjin.A series of step-loading consolidation tests are performed on both ultra soft soil and remolded specimens using a modified oedometer with low applied stress and the ordinary oedometer.The results show that the coefficient of consolidation of the remolded specimens increases with the increasing consolidation pressure.But the ultra soft soil has a“S”shape of Cv-lgp curves.This“S”shape involves two parts divided by the consolidation yield stress(1 6kPa).The one prior to the yield stress is responsible for concave increase while the other after the yield stress is responsible for linear increase with the decreasing incrementary ratio.Unlike to the normal sedimentary remolded soils,the coefficient of secondary consolidation of hydraulic fill ultra soft soil shows a peak value as the consolidation pressure is applied.Load ratio had significant influence on the coefficient of secondary consolidation of hydraulic fill ultra soft soil.The smaller incremental load can reduce the coefficient of secondary consolidation.The coefficients of secondary consolidation of the ultra soft soil and normal sedimentary remolded soils are increased with increasing moisture content.关键词
超软土/固结系数/次固结系数/加荷比/含水率Key words
Ultra soft soil/Coefficient of consolidation/The coefficient of secondary consolidation/Load ratio/Moisture content分类
建筑与水利引用本文复制引用
雷华阳,任倩,张文振,黄茂松,康景文..吹填超软土固结特性试验分析[J].工程地质学报,2014,(6):1039-1045,7.基金项目
国家自然科学基金项目（51378344），国家重点基础研究发展计划（973）项目（2010CB732106），同济大学岩土及地下工程教育部重点实验室开放研究基金项目（KLE-TJGE－B1101）资助． （）
