岩土力学2012，Vol.33Issue(2)：476-482,7.
软土结构性对次固结系数的影响
Effect of soft clay structure on secondary consolidation coefficient
摘要
Abstract
The natural sedimentary soft clay behaves the structural characteristic, the influence of which can not be reflected in the process of computing secondary consolidation of soft clay by conventional method. Secondary consolidation test on undisturbed and remolded soil samples from Zhangzhou and Qingdao are performed for researching the influence of soft soil structural characteristic on the secondary consolidation coefficient Ca It is shown that soft soils' Ca increases with the increasing pressure P, and it gets to maximum while P gets close to yield pressure σk, and then it decreases and influenced little by P. Finally, it tends to be consistent with remolded soil clays' Ca. The remoulded soft clays' Ca which is influenced little by P is regarded as a constant. Determing Ca according to Ca/Cc may have some error. The normally consolidated soft clay may show false over-consolidation because of soil's structural characteristic, therefore, it is improper to illustrate structural soft clays' Ca by using normally consolidated soft clay; it can be well illustrated according to the damage of soft clay structure under different pressures.关键词
软土结构性/次固结系数/结构屈服压力Key words
soft clay structure/ secondary consolidation coefficient/ structural yield pressure分类
建筑与水利引用本文复制引用
张先伟,王常明..软土结构性对次固结系数的影响[J].岩土力学,2012,33(2):476-482,7.基金项目
国家自然科学基金项目(No.40572153). （No.40572153）
