中北大学学报（自然科学版）2016，Vol.37Issue(6)：654-658,5.DOI:10.3969/j.issn.1673-3193.2016.06.017
平底夯锤和异形夯锤强夯效果的对比研究
A Comparative Study on the Effect of Dynamic Compaction by Flat Bottom Hammer and Special Shaped Hammer
摘要
Abstract
On the improvement of the shape of bottom surface of hammer,the four hemispheres are add-ed in the bottom surface of the hammer,the special shaped hammer is formed,and the 1∶8 loess model test is carried out.The effect of dynamic compaction is studied from four aspects of the depth of the pit, the depth of the reinforcement,the average strain and the void ratio,compared with that of the flat bot-tom hammer.The results show that for flat bottom hammer,the depth of tamping pit under heavy hammer is deeper than light hammer under the action of the same level and the same tamping blow num-ber;for special hammer,which is contrary.With the same weight and temping number,the reinforced depth is deeper and the effect of reinforcement is even compared with special shaped hammer,and the effect of reinforcement focused on shallow soil.In the scope of the reinforcement depth,the average strain of the soil under the action of the special shaped hammer is larger than the average strain of the soil under the flat bottom.The test results reveal the characteristics of reinforcement under the special shaped hammer and flat bottomed hammer in the loess area,which provides useful reference for the en-gineering design and construction of the loess area.关键词
强夯/平底夯锤/异形夯锤/黄土/加固Key words
dynamic compaction/flat bottom hammer/special shaped hammer/loess/reinforcement分类
建筑与水利引用本文复制引用
韩云山,刘小梅,吴晗,王元龙..平底夯锤和异形夯锤强夯效果的对比研究[J].中北大学学报（自然科学版）,2016,37(6):654-658,5.基金项目
国家自然科学基金资助项目(51208473) （51208473）
山西省科技攻关项目(20130313010-3) （20130313010-3）
