摘要
针对鲜少研究不同击实能量条件下填土不同粒料成分的响应机制,该文选取砂土及黏土作为击实土料,砂土为刚性颗粒粒料,黏土近似为片状颗粒团粒集合粒料。通过测定不同击实能条件下两种粒料的干密度得出:干密度随击实能的增加均呈对数关系,干密度增量逐渐减小,最终收敛,且在较小击实能的条件下砂土干密度增量大于黏性土,随击实能的增加其收敛速度亦大于黏性土。从不同粒料颗粒性质着手,归纳出不同粒料不同阶段吸收能量后的响应机制,很好的解释了刚性颗粒及片状颗粒团粒集合粒料的干密度随击实能的变化规律。
According to rarely studing the response mechanism of different granular materials of filling soil with different compaction energies,in this paper,the sandy soil and clayey soil are chosen as compaction soil,the sand soil is as the rigid granular material,and the clayey soil is approximately as the flaky aggregates of granular cumularsharolith.By measuring the dry density of the two kinds of granular materials under different compaction energy conditions,the conclusion shows that with the increasing of compaction energy,the dry density shows logarithmic relationship.The increment of dry density decreases gradually and converges eventually.The increment of dry density of sandy soil is larger than that of clayey soil under the condition of smaller compaction energy.With the increase of compaction energy,the convergence rate is also faster than that of clayey soil.Starting from the properties of different granular materials,the response mechanisms of different granular materials after absorbing energy at different stages are summarized.It can well explain the dry density changing rule of rigid granular material and flaky aggregates of granular cumularsharolith with different compaction energy.
作者
郭义
肖涉恒
杨伟明
周政
Guo Yi;Xiao Sheheng;Yang Weiming;Zhou Zheng(China Energy Engineering Group Hunan Electric Power Design Institute Co.,Ltd.)
出处
《勘察科学技术》
2019年第1期1-3,9,共4页
Site Investigation Science and Technology
关键词
填土
击实能
不同粒料
响应机制
filling soil
compaction energy
different granular materials
response mechanism
