岩土工程学报2013，Vol.35Issue(z1)：90-96,7.
两种类型吹填场区地基土的次固结特性试验研究
Properties of secondary consolidation of two types of dredger fill sites
摘要
Abstract
By use of the unidirectional oedometer apparatus,a series of 1-D compression secondary consolidation tests on soil samples in two kinds of dredger fill sites are done.The relationship among stress,strain,void ratio and time is obtained,and the characteristics of the secondary consolidation and its influencing factors are compared.The results show that the secondary consolidation coefficient first increases with the increase of load and then decreases.In contrast,the value in unprocessed site is more than that in processed site.It also increases with the increases of moisture content,and the relationship curve is a concave.It keeps a linear increase with the compression index,at the same time,it keeps a logarithmic downtrend with the increasing time.The characteristics of the secondary consolidation are obviously influenced by the height and the drainage condition of soil samples.Based on the results,a simple and practical secondary consolidation coefficient model and deformation forecast method,which are suitable for the characteristics of dredger fill sites,are proposed.Compared with the experimenta; results,the proposed model can be employed to predict the deformation characteristics of the dredger fill sites.关键词
吹填场地/次固结特性/次固结系数/沉降预测Key words
dredger fill site/ secondary consolidation characteristic/ secondary consolidation coefficient/ settlement prediction分类
建筑与水利引用本文复制引用
雷华阳,陈丽,丁小冬,郑刚,康景文..两种类型吹填场区地基土的次固结特性试验研究[J].岩土工程学报,2013,35(z1):90-96,7.基金项目
国家自然科学基金项目(51078262) （51078262）
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) （KLE-TJGE-B1101）
天津市软土特性与工程环境重点实验室开放课题基金项目(2011SCEEKL003) （2011SCEEKL003）
