论文部分内容阅读
基于GDS动态空心圆柱试验系统,对京沈客运专线阜新北站非饱和风积土在不同含水率和振动频率下的振陷变形特性进行研究,提出重塑非饱和风积土振陷变形模型函数。研究结果表明:在同等试验条件下,含水率越高其振陷变形越大,振动频率对振陷变形能力影响有限,且重塑风积土振陷变形显著大于原状风积土;在试验基础上建立了考虑含水率和动剪切应力的Ploy2D函数模型来表征重塑非饱和风积土振陷变形特性,含水率对振陷变形性能的敏感性强于动剪切应力的敏感性。
Based on the GDS dynamic hollow cylindrical test system, the deformation characteristics of unsaturated aeolian soil in Fuxin North Station of Beijing-Shenyang Passenger Dedicated Line under different water content and vibration frequency are studied, and the model function of deformation of unsaturated aeolian soil deformation . The results show that under the same experimental conditions, the higher the water content is, the greater the deformation of the vibration is. The vibration frequency has a limited influence on the deformation capacity. The deformation of the remolded aeolian soil is significantly larger than that of the original aeolian soil. Based on the experimental results, The Ploy2D function model considering moisture content and dynamic shear stress is used to characterize the deformation characteristics of remolded unsaturated aeolian soil. The moisture content is more sensitive to the deformability of deformation than the dynamic shear stress.