Deep vibro compaction (vibroflotation) is a widely-used ground improvement technique in granular soils. During the compaction process, the vibrator body is in constant interaction with the compacted soil. The changing ground conditions influence the motion behavior, making it possible to use the deep vibrator not only as a compaction device but also as a measurement tool. Within the scope of the current study, large-scale experimental field tests were realized to monitor the motion behavior during the compaction process. This paper discusses the concept and the results of the experimental investigations. Based on the test results, the vibrator motion is shown, highlighting the influence of the contact stress between vibrator cone and soil on the motion behavior. An analytical model is used to investigate the relationship between the actual soil stiffness and the vibrator motion. A working hypothesis is presented, which allowed identifying dominant soil mechanical processes leading to the compaction effect in the soil. Finally, the potential of the findings for developing a work- and vibrator-integrated compaction control system is shown. Such a procedure results in a homogenous compaction effect, exploiting the potential of the compaction device while avoiding its overloading.

深层振动压实（振动浮选）是一种在粒状土壤中广泛使用的地面改良技术。在压实过程中，振动器主体与压实的土壤不断相互作用。不断变化的地面条件会影响运动行为，因此不仅可以将深层振动器用作压实设备，而且还可以将其用作测量工具。在当前研究的范围内，实现了大规模的实验现场测试，以监测压实过程中的运动行为。本文讨论了实验研究的概念和结果。根据测试结果，显示了振动器的运动，突出了振动器锥体与土壤之间的接触应力对运动行为的影响。分析模型用于研究实际土壤刚度和振动器运动之间的关系。提出了一个有效的假设，该假设可以确定导致土壤压实效果的主要土壤力学过程。最后，显示了开发工作和振动器集成的压实控制系统的发现潜力。这样的过程产生了均匀的压实效果，在避免其过载的同时，充分利用了压实装置的潜力。