摘要
从强夯法加固地基的机理入手,对青岛地区粗颗粒填土的强夯有效加固深度进行了探讨,提出了青岛地区强夯有效加固深度经验公式。针对强夯后地基土强度随深度仍不均匀的实际情况,提出最佳有效加固深度区间的概念。在大量工程经验的基础上,提出了适用于粗颗粒填料的低能量连续强夯(排夯)施工工艺。结合试夯实例,对低能量连续强夯(排夯)施工工艺的实施效果和对夯后地面标高的确定等问题进行了讨论。
The effective improvement depth of coarse-grained soil in Qingdao area was investigated from the research of mechanics of ground improvement with dynamic compaction method,and its empirical formula was given,too.Because the strength of the improved ground soil is not homogeneous in different depth,the optimal effective improvement depth interval-zab was put forward.Based on substantial engineering experience,the continuous low-energy dynamic compaction method for coarse-grained soil was proposed. With a test case of dynamic compaction, the effect of the continuous low-energy dynamic compaction method and how to determine the ground elevation after compaction were discussed.
出处
《城市勘测》
2009年第5期154-157,共4页
Urban Geotechnical Investigation & Surveying
关键词
强夯
低能量连续强夯
有效加固深度
夯后地面标高
dynamic compaction
continuous low-energy dynamic compaction
effective compaction depth
ground elevation after compaction
