摘要
试验中运用骨架波速和黄土加固凝聚力的概念 ,将饱和度的增加引起土体密度的增加对波速的影响与水破坏加固凝聚力对波速的影响区分开来 ;在相似的压力和饱和度条件下采用动力作用前后分别测试弹性波速的方法 ,将动力荷载对加固凝聚力的破坏作用与土样自身的颗粒组分对波速的影响区分开来。
Based on the concepts of elastic wave velocity of skeleton and reinforced cohesion, the change of velocity resulting from the variation of soil density with the different saturation is distinguished from that caused weakened reinforced cohesion. In the condition of the same confined press and saturation, the elastic wave velocities are measured before and after soil samples are dynamically loaded, so that the elastic wave velocity changed by dynamic load is distinguished from that by soil nature characteristics. Some regular patterns of reinforced cohesion and velocity in loess under different saturation and dynamic load are discussed in a preliminary way.
出处
《西北地震学报》
CSCD
北大核心
2004年第3期218-222,共5页
Northwestern Seismological Journal
基金
科技部社会公益研究专项资助(2 0 0 0 - 35)
甘肃省自然科学基金 (3ZS0 4 1 -A2 5 - 0 1 4 )
中国地震局兰州地震研究所论著编号 :LC2 0 0 4 0 0 60
关键词
波速
黄土
动力
加固凝聚力
Elastic wave velocity
Loess
Dynamic load
Reinforced cohesion
