Glockenturmschwingungen und ihre normgerechte Reduzierung durch geeignete Maßnahmen am Geläut

Bell tower vibrations and their standard compliant reduction by appropriate measures of the peal of bells.

Bell towers are subject to dynamic forces which have been underestimated repeatedly. For this reason up to now a multitude of towers show considerable vibrations of the tower and damage. Today the calculation of the dynamic forces as well as the size of vibrations of the tower which are considered harmless are defined in the codes. How ever, for existing towers the question still arises frequently how the vibrations of a tower can be reduced to an uncritical extent. In this article the different possible solutions are illustrated by concrete examples. The aim of the measures was always to reduce the tower's vibrations in a way that the acceptable value given in the code is not exceeded. The examples show that a sufficient reduction of the tower's vibrations is usually possible. It becomes also apparent that the choice of the optimal measure has to be determined in each case individually — even if the outward appearance of the towers seems to be similar.