【摘要】 本文在邓肯-张模型进行深入探讨的基础上,提出了切线模量实质物理意义是剪切模量的观点,并分别采用应力法和应变法推导了剪切模量和体积模量(或变形模量)公式,还进行了考虑Biot固结非线性弹性油罐地基有限元实例分析。对不同的变形模量计算方法进行了比较,提出了改进的非线性弹性模型。更多还原

【Abstract】 Having discussed the Duncan-Chang Model Carefully, this thesis has proposed a view that tangent modulus of elasticity is shear modulus of elasticity actually and has inquired into two groups of formulae of shear modulus of elasticity and hulk modulus of elasticity (or deformation modulus), which change with time t, respectively by the strain method and the stress method. Considering the Biot consolidation, this thesis has also analyzed the nonlinear-elastic soft soil foundation under the oil-tank by FEM and compared the results which are calculated by these two groups of different formulae of deformation modulus. Then the improved nonlinear-elastic model has been proposed.更多还原