摘要
针对回填土地基,通过量纲分析得到强夯加固深度和累积夯沉量的计算公式,结合已有工程资料对所提出的计算公式进行验证。结果表明:该公式能够较为精确地预测填土地基的加固深度与累积夯沉量;分析表明:累积夯沉量与加固深度比值随着诸多要素而变化,仅在确定的落距和夯锤半径范围内的才可以作为常数进行推广;最后分析夯锤半径及厚度对强夯效果的影响。
Aiming at backfilled foundation, formulas of reinforcement depth and cumulative settle- ment have been obtained by dimensional analysis. The proposed formulas have been validated combined with the existing engineering data.The results show that the formulas can more accu- rately predict reinforcement depth of backfilled foundation and cumulative settlement, and also can analyze the relationship between cumulative settlement and reinforcement depth. The results showed that the ratio of cumulative settlement and reinforcement depth varies with many factors, and only in certain distance and rammer radius,can it be extended as a constant.In the last,we an- alyze the impact of the hammer radius and thickness on the effect of dynamic compaction. The conclusion has a certain reference value for similar practice.
出处
《地震工程学报》
CSCD
北大核心
2015年第B07期30-34,共5页
China Earthquake Engineering Journal
基金
国家重点基础研究发展计划项目(2014CB047006)
国家自然科学基金项目(11272031)
关键词
强夯
加固深度
累积沉降量
夯锤尺寸
dynamic compaction
reinforcement depth
cumulative settlement
hammer size
作者简介
张北战（1988-），男，硕士研究生，主要从事机场工程的高填方研究．E—mail：zhangbeizhan@sina．cn
通迅作者：姚仰平（1960-），男，教授、博士生导师，主要从事土的本构关系及机场工程的岩土问题研究．E-mail：ypyao@buaa．edu．cn
