弹塑性本构模型计算冻结壁应力场和位移场

Elastic and plastic model for calculattion of frozen wall stress and displacement field

应用冻结壁在卸载状态下冻结壁-周围土体共同作用的力学模型,基于大量的冻土应力-应变关系曲线的试验,采用弹塑性非线性本构模型计算冻结壁应力场和位移场。计算结果表明,由于冻结壁在周围土体共同作用下外载比原始水平应力要低,计算的应力场和位移场和有限元模拟接近地。

Appling the mechanical model of 'interaction of frozen soil wall land surround earth mass in unloaded stated' and based on a lot of the experiments of frozen soil stress-strain curve,a nonlinear elastic plastic model is adopted to compute frozen wall stress and displacement field.The calculation results demonstrate that the load on frozen soil is much lower than the horizontal ground press and the stress and displacement field are much close to FEM simulation.These calculations should be of certain singnificance for the design of frozen wall.