摘要
基于冲击压路机在含石量很高(60%～70%)的土石混填高填方路基施工中的应用实践,对路堤的沉降变形、干密度、孔隙比以及影响深度进行试验研究。阐述高含石量土石混合料的特性、土石混填路基施工工艺及质量评价控制指标,进一步分析高含石量土石混填料在冲击压路机冲击碾压作用下压实的工作特性和作用机制。研究结果表明,冲击压实技术用于土石填方高路堤的压实施工不仅可明显改善填料的压实质量,而且由于冲击碾压后路堤产生压缩沉降,对减少路堤施工的工后沉降也有明显的效果。
Based on the application and practice using impact roller to a high embankment of highway,which is filled by soil-rock foundation packing material with high content of stone(60%–70%),an impact compaction technology for high embankment is developed.During the process of compaction,the parameters of the filling including dry density and void ratio,settlement patterns of embankment and the depth of the impact compaction are studied.The specificities of the soil-rock foundation packing material and the quality index system for evaluating the soil-rock material have been expounded;and the working characteristics and the compaction action mechanism of the soil-rock material under roller compaction have also been analyzed.It is indicated by the results of the experiment that the quality of the embankment increases with the impact compaction,and the post-construction settlement decreases as a result of the compression settlement of embankment.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第z2期4191-4197,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
基础工程
冲击压实技术
高填方路基
土石混填料
工后沉降
foundation engineering
impact compaction technology
high embankment
soil-rock foundation packing material
post-construction settlement
