混凝土双轴拉-压随机本构方程分析

Analysis of Two-axial Tension-compression Stochastic Damage Constitutive Equation of Concrete

在混凝土受拉、压随机损伤本构关系研究基础上,研究了混凝土在双轴拉-压作用下随机损伤本构关系;通过考虑混凝土内部各组项的影响,考虑由侧向均布压应力所引起的横向Poission自由应变和剪切应变,建立起双轴拉-压损伤机理模型;根据混凝土破坏过程的能量守恒原理,导出了混凝土受双轴拉压破坏的随机损伤本构方程.

Based on the study of the one - axial tension stress and one - axial compression stress stochastic damage constitutive, study two - axial tension - compression stochastic damage constitutive ; Combining the reciprocity effect of different components, the internal grads tensile stress and the shear strength caused by compress stress under side compress stress,a type of new two - axial tension - compression stochastic damage constitutive model was formed. In the light of the energy conservation during the process of damage failure, the stochastic damage constitutive equation of concrete material subjected to two - axial tension - compression is derived.