徐州工程学院学报（自然科学版）2026，Vol.41Issue(1)：15-21,7.
饱和度及盐分对海砂动模量和阻尼比的影响
Effect of Saturation Degree on Dynamic Modulus and Damping Ratio of Sea Sand
摘要
Abstract
This study utilizes a controlled or measurable unsaturated soil vibration triaxial testing instrument to analyze the effect of saturation and salinity on the dynamic properties of sea sand.The findings reveal that the dynamic elastic modulus and damping ratio of sea sand are significantly affected by the degree of saturation:the dynamic elastic modulus decreases and the damping ratio increases as saturation increases.Saturated sea sand has a lower dynamic elastic modulus and a higher damping ratio than unsaturated sea sand.Furthermore,the presence of salt has a significant impact on the dynamic properties of sea sand,with washed sea sand demonstrating reduced dynamic strength,dynamic elastic modulus and damping ratio.These findings are crucial for understanding and predicting the deformation and stability issues in sea sand subgrades subjected to train vibration,providing a scientific basis for subgrade design and maintenance in railway construction.关键词
非饱和土/海砂/饱和度/动弹性模量/阻尼比Key words
unsaturated soil/sea sand/degree of saturation/dynamic modulus/damping ratio分类
天文与地球科学引用本文复制引用
徐子邦,刘锦军,徐永福,李宗龙,宁锐,程岩,曹鹏鹏,孙德安..饱和度及盐分对海砂动模量和阻尼比的影响[J].徐州工程学院学报（自然科学版）,2026,41(1):15-21,7.基金项目
国家自然科学基金项目(42330701) （42330701）
中铁上海局集团科研项目(2023207) （2023207）
