市政技术2025，Vol.43Issue(7)：179-188,10.DOI:10.19922/j.1009-7767.2025.07.179
高能级强夯法加固黄土地基动应力模型试验研究
Dynamic Stress Model Test of Loess Foundation Strengthened by High-energy Dynamic Consolidation
陈希林 1王月 1魏进2
作者信息
- 1. 北京市政路桥股份有限公司,北京 100161
- 2. 长安大学公路学院,陕西西安 710064
- 折叠
摘要
Abstract
In order to study the dynamic stress law of the loess foundation strengthened by the high-energy dynamic consolidation method,a laboratory model test device was independently developed based on the similarity theory.The dynamic stress transfer law in the loess foundation under the combined working conditions of different parame-ters(soil moisture content,tamping times,energy level,drop distance and hammer diameter)was studied,and the high-energy dynamic consolidation numerical model was established,and the model test results were verified by the numerical calculation results.The results show that when the loess foundation has the optimum moisture content,the energy transfer of high-energy dynamic compaction is fast and deep,and the reinforcement effect is the best;The greater the energy level,the deeper the energy transfer,and the less the compaction times for the loess foundation to reach stability;The combined construction technology of heavy rammer and low pitch shows better applicability in the treatment of loess foundation,and the treatment effect is remarkable;The treatment depth by small-diameter rammer is deeper than that by large-diameter rammer;The calculation results of the established numerical model show a high similarity to the laboratory test results,verifying the reliability of the laboratory model test.关键词
高能级/强夯/动应力/模型试验/黄土地基/数值模拟Key words
high-energy level/dynamic consolidation/dynamic stress/model test/loess foundation/numerical simulation分类
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陈希林,王月,魏进..高能级强夯法加固黄土地基动应力模型试验研究[J].市政技术,2025,43(7):179-188,10.
