摘要
杂填土承载力低,压缩性大,颗粒尺寸悬殊,回填前地貌高低起伏,形成填土薄厚不一,回填时间先后不一,取样困难,通常无法提出正确的设计参数。文章通过强夯法进行地基处理,应用梅纳经验公式,确定单击夯击能并根据现场试验确定夯击次数。强夯处理后地基弹性模量及承载力明显提高,结果证明该法满足设计要求且具有显著的技术和经济优势。
Miscellaneous fill has low bearing capacity, large compressibility, disparate particle size, up- and-down landform before backfilling, variable fill thickness, different backfilling time, sampling problems and so on, so the design parameters of it is often incorrect. In this paper, the dynamic com- paction method is used to improve miscellaneous fill foundation treatment. The single tamping energy is determined by using the empirical formula of Menard and the number of dynamic compaction is obtained by the on-site tests. The dynamic compaction effectively improves the loading capacity and e- lastic modulus of the foundation. The result shows that it meets the design requirements and has sig- nificant technical and economic advanta~：es.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期814-819,共6页
Journal of Hefei University of Technology：Natural Science
关键词
杂填土
强夯法
地基处理
miscellaneous fill dynamic compaction
foundation treatment
