Dynamic compaction real-time detection based on acceleration measurement

With advantages of easy use, low cost, good effects and wide application range, the dynamic compaction is widely used in ground construction. According to its technical regulations, the ramming value measurement methods are currently applied in the real-time compaction level detection, but the existing methods all have their defects. To improve the situation, using the rammer impact acceleration to detect the compaction level. Firstly, the dynamic compaction's impact model was established and the relationship between the rammer's acceleration and ramming times was derived through theoretical analysis, then the test model was built based on the similarity theory, the model tests were conducted to get data for verification. The final results showed that the relation between relative change percentages of a single ramming value and peak acceleration is obtained, the assumption detecting real-time compaction level based on impact acceleration is deduced, thus a new way to detect the real-time compaction during the construction is provided. ©, 2015, Chinese Vibration Engineering Society. All right reserved.