METHOD AND DEVICE FOR DETERMINING EVALUATION INDEX OF EFFECTIVE REINFORCEMENT RANGE

The present invention discloses a method and a device for determining an evaluation index of an effective reinforcement range, wherein the method comprises the steps of constructing a dynamic compaction reinforcement foundation mechanism test model, and performing multiple groups of dynamic compaction tests on the dynamic compaction reinforcement foundation mechanism test model; in each group of tests, selecting both a and MH" as fixed values, changing ram weights M and drop distances H, and enabling each ram weight M and the corresponding drop distance H to form a tamping mode, acquiring an effective reinforcement depth corresponding to each tamping mode, taking different values of d and MH" corresponding to different groups of tests, and looking up to determine whether the effective reinforcement depths corresponding to multiple tamping modes in each group of tests are the same, and if the effective reinforcement depths are the same, then MH" corresponding to the group of tests is the evaluation index of the effective reinforcement range. The application provides a novel evaluation index of an effective reinforcement range. When the evaluation index is unique, the corresponding effective reinforcement depth is unique. Therefore, the evaluation index can reveal the reinforcement mechanism of the ram weight M and the drop distance H on the soil body and provide substantial improvement