上海国土资源2011，Vol.32Issue(4)：73-77,5.
结构性对上海软土次压缩特性的影响
Influence of Soil Structure on Secondary Compression Behavior of Shanghai Soft Clay
摘要
Abstract
One dimensional compression tests were conducted on natural samples （with flocculated structure） and remolded samples （with dispersive structure） of Shanghai soft clay to study on the influence of soil structure on the secondary compression behavior of Shanghai soft clay. Results show that the compression index Co, coefficient of secondary compression C,, and CJCaof remolded samples are almost constant and don＇t change much with increase of consolidation pressure. When the consolidation pressure reach the yield strength of natural structure and the flocculated structure turns to the dispersive structure, Cc, Co and Ca/Cc increase quickly to the peak value and decrease as the consolidation pressure increase. What＇s more, the drastic change of soil structure will influence the dissipation of pore pressure, so the kind of anti-S shape of e-lgt curve isn＇t obvious in natural samples and it will be very difficult to determine the time tp, when prime consolidation finished and secondarv comoression beoan.关键词
软土/结构性/次压缩Key words
soft clay/soil structure/secondary compression分类
建筑与水利引用本文复制引用
高彦斌,李赫,张阿晋..结构性对上海软土次压缩特性的影响[J].上海国土资源,2011,32(4):73-77,5.基金项目
国家自然科学基金项目 （）
