摘要
通过实测应力场揭示了静力触探的贯入机理,分析了自由表面效应、深度效应和层位界面效应的不同机理特性;论证了一定的 P_s 曲线反映出制约其形状变化的机理特征;获得了临界深度和 p_s 值与相对密度的相关曲线.为静力触探成果的判释和应用及研究贯入机理的数值模型提供了可靠依据.
Through determining practical stress field,the penetrating mechanismof the Static Penetration Test is brought to light in this paper.Thedifferent properties of mechanism are analyzed for the free-surfaceeffect and the depth effect and the strata boundary effect;it isdemonstrated that a certain P_s curve reflects the feature of mecha-nism which restricts the change of its form;and the correlationcurves in which the critical depth and the Ps-Value correspondto the relative density are obtained.These provide reliable bases fordistinguishing and applying the CPT results and for studying thenumeral value mode of penetrating mechanism.
出处
《长沙铁道学院学报》
CSCD
1990年第3期1-10,共10页
Journal of Changsha Railway University
关键词
静力触探
自由表面效应
深度效应
free surface effect
depth effect
strata boundary effect
shearing expansion
shearing shrinkage
