粉细砂土填筑压实技术试验研究 |
| |
作者单位: | ;1.石家庄铁道大学 |
| |
摘 要: | 通过室内及现场试验,对粉细砂土物理力学性质和压实工艺进行研究,结果表明:粉细砂土颗粒均匀集中,通过增加单位击实功的方法不能有效提高粉细砂土的最大干密度;粉细砂土对较高含水率具有很强的敏感性,且最优含水率右侧强于左侧;粉细砂土压缩至稳定所用时间很短,碾压过程较为省时;依靠增大碾压压力来提高粉细砂土压实度的方法不可行;粉细砂土的抗剪强度峰值随法向压力增大而提高;总结了粉细砂土有约束碾压的技术参数。
|
关 键 词: | 粉细砂 颗粒 压实度 有约束碾压 |
Experimental Study on Compaction Technology of Silty Sand Embankment |
| |
Affiliation: | ,College of Civil Engineering,Shijiazhuang Tiedao University |
| |
Abstract: | Physical and mechanical properties of silty sand and its compaction process are studied through indoor and field tests. The results show that silty sand particles are uniform; the method of increasing unit compaction cannot improve the maximum dry density of silty sand effectively; silty sand is sensitive to higher moisture content,and the optimum moisture content of the right side of is more sensitive than that of the left; the time from compression to stability is short and the rolling process of silty sand is relatively time-saving; increasing compaction pressure to improve silty sand's compactness is not feasible; and the peak of silty sand shear strength increases as the normal pressure increases. This paper also summarizes the technical parameters of compaction with constraints. |
| |
Keywords: | Silty sand Particle Compactness Compaction with constraints |
本文献已被 CNKI 等数据库收录! |
|