摘要
对无泥型软弱层带在动荷载下的强度试验表明 ,天然含水状态下 ,软弱层带从静荷载至动荷载 ,显示出内聚力 C减小幅度较大 ,而内摩擦角φ反而有所增加 ;在饱水状态下 ,从静至动荷载 ,C和 φ都将减小 ,但 φ的降低幅度更大些 .同时 ,在动荷载下 ,从天然含水至饱水状态 ,C和 φ也均有较大幅度的降低 ,且仍以 φ值降低更为显著些 ,这表明动荷载下产生的孔隙水压力对无泥型软弱层带强度参数的降低 ,也是很明显的 .
Through analyzing the dynamic strength testing data, it is found that under natural moisture state, the cohesion C of the interbed is reduced when compared with its static value, and on the contrary, its internal friction angle φ exhibits an increase. It is also found that under saturation moisture state, both C and φ are smiller than their static values respectively. These facts show that the pore water pressure formed by dynamic loading has a negative influence on the strength of the no clay weak interbed.
出处
《实验力学》
CSCD
北大核心
2000年第3期329-335,共7页
Journal of Experimental Mechanics
基金
西南交通大学科学研究基金!(项目编号 :1 999XM1 5)资助
