摘要
以球孔扩张模型为基础,引入八面体应力和曲线型Mohr-coloumb强度包线,利用能量平衡原理和体变平衡原理建立方程组,来分析密砂中深基础的基底极限承载力;并将本文理论与其他理论和实际应用进行比较,表明本文理论更符合实际情况。本理论是综合了剪切机理和压缩机理的一种新的尝试,是对Vesic课题的发展。
Based on the model of spherical cavity expansion, this paper introduces octahedron stress and Mohr-coloumb strength envelope curve. Employing conservation of energy principle and equilibrium of volume principle, equations are established to analyze the ultimate bearing capacity of deep foundations in dense sands. A classic case is calculated, and comparisons with those from other theories indicate that the proposed theory is more reasonable. The theory is a tentative method to synthesize shear and compression mechanisms, and can be considered as an extension to Vesic＇s theory.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第8期102-106,共5页
China Civil Engineering Journal
关键词
极限承载力
球孔扩张
能量平衡
体变平衡
非线型强度包线
非线性
ultimate bearing capacity
spherical cavity expansion
conservation of energy principle
equilibrium of volume principle
Mohr-coloumb strength envelop curve
nonlinearity
