20.500.12556/RUL-166476 Buoyancy effects on structures a case study on the controlled lowering of a raised underground garage In recent decades, the height of buildings and the number of basement floors has increased, especially in valuable urban locations. With the development of cities and the infrastructure essential for their operation, extensive underground construction is being carried out, including utility lines, subway tunnels etc. Water accumulation, fluctuating or high groundwater levels in the area of underground structures, due to various reasons, might cause structures, forming a closed volume, to move upwards. The excessive buoyancy problem, which arises, when necessary, precautions are not taken, is often overlooked by engineers. The negative effects of buoyancy on structures typically manifest as uplifts, settlements, or rotations. The state of structures damaged by excessive buoyancy must be thoroughly investigated to determine whether rehabilitation is possible or if the underground structure needs to be completely removed due to the infeasibility or cost inefficiency of its possible rehabilitation. This paper presents a methodology for addressing the state of structures affected by excessive buoyancy to find a suitable technological rehabilitation solution, supported by a case study. It demonstrates how inadequate design and execution of a single detail of a three-story underground garage resulted in its sudden elevation due to buoyancy. Through a thorough examination of the site, the state of the raised structure, the original project documentation, and basic safety check of anti-floating stability, rehabilitation procedure for the successful and controlled lowering of the underground garage was developed. civil engineering underground garage reinforced concrete buoyancy anti-floating stability uplift cracks groundwater inflow controlled lowering gradbeništvo podzemna garaža armirani beton vzgon stabilnost proti vzgonu dvig razpoke vtekanje podzemnih voda kontrolirano spuščanje true false true Angleški jezik Slovenski jezik Članek v reviji 2025-01-14 09:13:29 2025-01-14 09:13:35 2025-01-15 03:54:37 0000-00-00 00:00:00 2025 0 0 13 str. Vol. 71, art. 108121 Jan. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 69 2352-0124 10.1016/j.istruc.2024.108121 221926659 Cas,_Sorin-Buoyancy_effects_on_structures.pdf Cas,_Sorin-Buoyancy_effects_on_structures.pdf 1 009FF14AD5DBB7C64981D67AF0839758 5a91c2aa806fb9fe2cfef40b9c32a64c8dc64c451af9b0f5cac0ce32d43b7e1c d21a8e04-d24e-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198120 https://www.sciencedirect.com/science/article/pii/S2352012424022756 1 b5089caf-d24e-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198119 Fakulteta za gradbeništvo in geodezijo Naravoslovnotehniška fakulteta 0 0 0