关键词: 载荷试验, 卸荷比, 回弹比率, 再加荷比, 再压缩比率, 回弹变形, 再压缩变形

Abstract: The application of bearing test achievement is determining deformation properties of foundation soil or to calculate modulus of deformation and ultimate load etc. The phase of unloading and reloading of bearing test is researched through unloading ratio, rebound proportion, reloading ratio, recompression ratio etc. to get the regularity of rebound deformation and recompression deformation; and it is consistent with the law from consolidation test. The characteristics of bearing test can remedy some shortcomings of consolidation test; the exploratory research on applying the bearing test achievement to calculate the rebound deformation and recompression deformation is beneficial. Combined with engineering project, based on the analysis method of consolidation test achievement, some improvement is adopted; and then the new method is applied to calculate the rebound deformation and recompression deformation based on bearing test achievement. Compared the calculating result, the result from original method and the result from engineering measurement, the new calculating method is efficacious. But the shortcoming of the bearing test achievement is obvious; according to the need of new calculating method, some improving suggestions are proposed, so as to point out the direction of the next research step.

Key words: bearing test, unloading ratio, rebound proportion, reloading ratio, recompression ratio, rebound deformation, recompression deformation