| Popis: |
The article examines a case from the practice of geotechnical construction, when errors in the calculations of anchor piles performed by discharge-pulse technology (DPT anchor) and deviations from engineering solutions could lead to an emergency. During excavation of the foundation pit, an underground parking lot under construction, the enclosing structure, fixed with DPT anchors, received unacceptable displacements. Calculations established that the bearing capacity of the DPT anchors on the ground was overestimated up to 3 times. In addition, the analysis of the available materials on this object allowed the authors to identify serious violations in the construction of the latter. It is shows that when carrying out work on the preliminary tension of the DPT anchors, in some cases, already with an effort of 10 tons, there is a loss of their bearing capacity along the ground. As a result, it became necessary to redesign the anchorage. |
