钙质砂不排水性状的损伤-滑移耦合作用分析

针对钙质砂在低应力水平下的颗粒破碎现象，指出其变形在微观上存在颗粒破碎与滑移两种机制的耦合作用，并分别采用弹性损伤模型和边界面塑性模型予以描述。本文提出的损伤-滑移耦合作用力学模型对建立钙质砂可靠的本构关系作了新的尝试。理论模型预测与固结不排水压缩试验结果基本吻合。

Damage-slide coupled interaction behavior of undrained calcareous sand

The microscopic deformation of calcareous sand particles is the coupled action of particle failure and sliding.The cracking and sliding phenomena are described by elastic damage model and plastic bounding surface model respectively.It helps to establish the constitutive relationship of the deformation of calcareous sand.Good agreement between calculated result and experimental data from undrained compressive test is attianed.