摘要
利用剪切应变梯度塑性理论 ,假设剪切带内部的岩石为剪切破坏 ,建立了单轴受压岩石试件尺寸效应的塑性剪切应变梯度模型 ,并模拟了剪切带倾角、参数k1和k2 对单轴受压岩石试件软化段应力 -应变关系的影响规律。局部化是尺寸效应的原因。
Based upon shear strain gradient plastic theo ry of rock deformation localization,it is assumed that the failure pattern of ro ck in the shear bands is shear failure.A model of plastic shear strain gradient is obtained.Under the con dition of uniaxial compression of rock specimen,the inclination of shear band,p arameter k_1 and k_2 have an influence on the relationship of stress a nd strain in t he strain softening stage.The influence has been modeled.The results show that t he proposed model can be used in a wide range and the theoretical re sults are in a good agreement with many experimental results.Localization is th e reason for size effect.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2001年第6期711-713,共3页
Chinese Journal of Geotechnical Engineering
