摘要
山区碎石填土在进行回填时,由于其颗粒的大小不均、级配差、并会导致孔隙大等不良特征,尤其是使用周边场平开挖土方进行填土时,很容易会存在大量的大粒径块石,并对强夯加固的效果产生极大的影响。为了解强夯加固效果,选取更有效的强夯方案,根据相关规范和本工程特点,选取5种不同的强夯方案,对5个试验区进行强夯处理。采用圆锥动力触探试验、标准贯入试验、静载试验等方法对强夯后的地基进行测试,据此对地基加固处理效果做出检测与评价,最终确定该类场地适用的强夯处理方案。
When the gravel fill in mountainous area is backfilled,due to its uneven particle size,poor grading and large pores,especially when the surrounding excavated earthwork is used for filling,it is easy to have a large number of large-size block stones,which has a great impact on the effect of dynamic compaction.In order to understand the reinforcement effect of dynamic compaction,a more effective dynamic compaction scheme is selected.According to relevant specifications and the characteristics of the project,five different dynamic compaction schemes are selected for dynamic compaction treatment in five test areas.Cone dynamic penetration test,standard penetration test,static load test and other methods are used to test the foundation after dynamic compaction,so as to detect and evaluate the effect of foundation reinforcement treatment,and finally determine the applicable dynamic compaction treatment scheme for this kind of site.
作者
张书铭
燕永锋
郑晓军
ZHANG Shu-ming;YAN Yong-feng;ZHENG Xiao-jun(Faculty of Land Resources Engineering,KUST,Kunming 650093,China;Yunnan Nonferrous Geological Burean,Kunming 650051,China)
出处
《地质灾害与环境保护》
2022年第3期85-89,共5页
Journal of Geological Hazards and Environment Preservation
关键词
强夯法
地基处理
杂填土
方案比选
效果检测
dynamic compaction method
treatment of foundation
miscellaneous fill
scheme optimization
effect test
