农业工程学报2012，Vol.28Issue(14)：71-76,6.DOI:10.3969/j.issn.1002-6819.2012.14.012
路基土壤固有频率与密实度关系的测试分析
Test analysis of relationship between natural frequency and compaction degree for roadbed soil
摘要
Abstract
The relationship between the natural frequency of roadbed soil and the soil compaction degree is the foundation for accurately establishing the relationship between the vibration signal of vibration roller and the compaction degree of soil and is the basis for effectively adjusting work parameters of vibratory roller to improve the compaction efficiency based on the real-time compaction condition of roadbed by online detecting vibration signal. Taken specific roadbed soil as study subjects, cylinder soil samples were made by homemade spiral compacting mechanism in this paper. Based on the modal analysis method and using INV306DF portable intelligent signal acquisition and processing analysis system, the natural frequency tests were done for different cylinder soil samples with different compaction degree. The function relation expression was obtained between natural frequency and compaction degree of roadbed soil. This study provides a reference for improving the intellectualized control system of vibratory roller.关键词
土壤/密实度/振动/固有频率/模态分析Key words
soils/ compaction degree/ vibrations/ natural frequency/ modal analysis分类
建筑与水利引用本文复制引用
李军,周志立,李言..路基土壤固有频率与密实度关系的测试分析[J].农业工程学报,2012,28(14):71-76,6.基金项目
国家自然科学基金资助项目(51075124) （51075124）
