摘要
通过对砂卵石土的室内动三轴试验,对饱和砂卵石土的阻尼比动力参数进行深入的研究。主要分析不同围压、不同固结比和不同振动频率对砂卵石土阻尼比影响的变化规律。试验结果表明,动应变对阻尼比有显著影响,阻尼比随着动应变的增大而增大,但随着围压或固结比的增加而减小,同时,阻尼比具有随振动频率的增大而减小的变化规律。
Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, studies of saturated sandy pebble soil was done. It is analyzed the rule of the damping ratio of sandy pebble soil under different confining pressure, consolidation ratio and vibration frequency. The research makes clear that damping ratio markedly rises with the augmentation of dynamic strain, and falls as the enhance of confining pressure or confining pressure ratio, In addition, result also shows that damping ratio reduces with the accretion of vibration frequency.
出处
《工业建筑》
CSCD
北大核心
2008年第4期59-62,共4页
Industrial Construction
基金
四川省教育厅重点科研项目(2003A111)
关键词
砂卵石土
动三轴试验
阻尼比
sandy pebble soil dynamic triaxial test damping ratio
