Optimierte Konzepte für den sprengtechnischen Rückbau von Naturzugkühltürmen.

Optimized concepts for the deconstruction of natural draught cooling towers by blasting The deconstruction of natural draught cooling towers represents an essential part in the course of the conversion of old power plant sites. For monetary reasons in combination with reasons of sustainability, which are particularly reflected in the reusability of the site area and the recycling of the resource reinforced concrete, an immediate deconstruction of the natural draught cooling towers after the end of operation is recommended in most cases. In addition to the established state of the art, the article shows potentials for the further development of concepts for the deconstruction of natural draught cooling towers by blasting. Complex numerical simulations nowadays offer the possibility of precise simulations of both the structural stability for temporary, weakened construction stages and the collapse behaviour of reinforced concrete structures in the event of blasting. The key aspect is safety in various facets, which must also be considered and guaranteed for adjacent buildings in the immediate neighbourhood in particular. The new deconstruction concepts presented, for which no practical experience is available at this time, are compared with the established concepts with regard to the aspects of structural stability, collapse safety, vibration prognosis, necessary safety measures, effects on the environment, workload and costs. [ABSTRACT FROM AUTHOR]