摘要
针对强夯加固砂土地基地面变形的问题,通过量纲分析缩尺类比沈阳某工程施工现场,搭建室内模型试验装置,分析强夯过程中地面夯沉量的变化情况,建立了夯坑深度与土质参数和施工工艺参数各无量纲量间的相关方程。并运用ABAQUS软件建立有限元分析模型,验算试验得到的量纲方程的有效性。结果表明方程可用于推算现场强夯时的夯坑深度,为预测强夯时砂土地基地面变形提供依据,对现场强夯加固砂土地基施工设计提出建议。
An indoor model test device is established with the scale analogy of a construction site in Shenyang to study the deformation of sand foundation induced by dynamic compaction,in which the change of the ground com-paction settlement during the dynamic compaction process is analyzed.The correlation equation between the depth of the compaction pit and the dimensionless parameters of soil quality and construction process parameters is estab-lished.Using ABAQUS software to establish a finite analysis model and verify the effectiveness of the dimensional equations obtained from experiments.The results show that the equation can be used to calculate the depth of the tamping pit during the field dynamic compaction.It may provide the basis for predicting the deformation of the sand foundation surface during the dynamic compaction,and put forward suggestions for the construction design of the field dynamic compaction reinforcement of the sand foundation.
作者
董连成
张倩
DONG Liancheng;ZHANG Qian(School of Architecture and Civil Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)
出处
《低温建筑技术》
2023年第5期78-83,共6页
Low Temperature Architecture Technology
关键词
强夯法
室内模型试验
量纲方程
地面变形
strong compaction method
indoor model testing
dimensional equations
ground deformation
