摘要
根据原位十字板试验扰动导致饱和软黏土不排水强度降低的事实,应用圆柱形孔扩张理论,假设饱和软黏土在塑性阶段满足Tresca屈服条件,提出了一种基于饱和软黏土灵敏度的扰动度D且是塑性区半径的对数函数。考虑在塑性区内不排水强度su是扰动度D的函数,得到了考虑扰动的圆柱形孔扩张的弹塑性解答。
According to the fact of the undrained shear strength decreasing during field vane test, applying the cylindrical expansion theory, it is assumed that saturated soft clay satisfies Tresca yield criterion, and then the disturbance degree function is given on the basis of the sensibility of saturated soft clay, and the function D is logarithm function of the plastic radius. Considering the undrained shear strength Su is the function of the disturbance degree, the elastoplastic solution of the cylindrical expansion is gained.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第7期1505-1510,共6页
Rock and Soil Mechanics
关键词
饱和软黏土
Tresca材料
圆柱形孔扩张理论
灵敏度
扰动度
对数函数
saturated soft clay
Tresca material
cylindrical cavity expansion theory
sensibility
disturbance degree
logarithm function
