2025/04/22 by Bryzhataya, E. O.
#chimney #jack system #sandbox #stiffness coefficient of the foundation #stress-strain state #tilt #uneven settlement of the foundation #домкратная система #дымовая труба #коэффициент жесткости основания #крен #напряженно-деформированное состояние #неравномерная осадка основания #песочница
paper · doi:10.71536/sd.2025.1c30.4
The article is devoted to the research of the chimney shell’s stress-strain state, when correcting the tilt using various types of adjustable foundations. A finite element model of a 100-meter-high chimney with design measures to protect against the influence of excessive tilts has been developed, which take into account the interaction of the structure with the deformable base and adjustable foundations. Schemes for lowering the less subsided parts of the chimney using a "sandbox" type adjustment device and raising the most subsided parts of the chimney using jacks are considered. Based on the calculation results, the values of deformations (horizontal and vertical displacements of the shaft) were obtained, both during normal operation from the impact of the main combinations of loads, and taking into account the special impact (tilt caused by the variable stiffness coefficient of the foundation) and when leveling the geometric position of the chimney in space using sandboxes and jack systems.