摘要
采用改装的击实仪对赣南地区红砂岩风化土进行室内满夯冲击试验,通过预埋带有编号的钢珠测试土体的水平和竖向位移,采用自制环刀取土测试不同位置土体的密度变化。试验结果表明,满夯在侧面刚性约束条件下:越靠近击实筒圆心处,竖向位移增大幅度的均匀性越好,且随着深度的增大而减小的幅度与深度的大小近似成反比关系;夯击后任意位置处的红砂岩风化土颗粒没有发生水平位移;测点离击实筒圆心距离越小,密度随总夯击能增大的幅度越大,反之增大的幅度越小。
Using the modified compaction instrument of Gannan red sandstone weathering soil indoor full impact test,through embedded with a number of steel ball test soil horizontal and vertical displacement, using the ring-knife soil testing in different position of soil density change. The test results show that full impact in the side surface was constrainted by rigid conditions, closer to the center of the impact cylinder,the uniformity of vertical displacement increases＇s range is better, and the range of reduce along with the increase of depth is inversely proportional to the size of depth approximately. Particles of any red sandstone weathering soil in any position haven＇t produced horizontal displacement after had been impacted. The distance of measuring point from the impact cylinder center is smaller, the range of increasing to density along with total impact energy is bigger ,otherwise it is smaller.
出处
《四川建筑科学研究》
2014年第1期136-138,163,共4页
Sichuan Building Science
基金
国家自然科学基金资助项目(50869002)
江西省教育厅资助项目(GJJ08290)
关键词
红砂岩风化土
满夯
刚性约束
作用效应
red sandstone weathering soil
full impact
rigid constraint
effect
