Abstract
The analysis of the aerodynamic force coefficients of the Holy Trinity Column in Olomouc based on the experimental wind tunnel testing is presented. Two aerodynamic models corresponding to geometrical scales 1:75 and 1:150 were built using 3D-printer and tested in the smooth flow in order to define the global static wind effects. The larger model served as a reference case for the tests of the isolated column, while the model build with smaller scale enabled also the experimental examination of the influence of the closest surroundings. The comparison of the aerodynamic coefficients obtained from the testing of both models for various wind speeds confirms their similarity and interchangeability. The independence of the coefficients on Reynolds number, Re, were successfully verified and the presented coefficients were determined for Re = 2.7 105 for a large number of angles of wind attack. The significant decrease in the static wind load due to the surrounding buildings were observed. The obtained results can broaden the knowledge of wind load related to this type historical monuments and can be useful when deciding about their global maintenance, a type of remedial work or their conservation.
Highlights
The historic buildings, bridges and monuments are subjected to weather load for centuries
The effect of the static wind load can be defined by means of non-dimensional aerodynamic coefficients that can be afterwards applied to assessment of a real structure
Static force and torque measurements of two scale models of the Holy Trinity Column in Olomouc were performed in the wind tunnel at Centre of Excellence Telč
Summary
The historic buildings, bridges and monuments are subjected to weather load for centuries. They are important part of the Czech national heritage and present a development of architecture, town planning art and cultivation of the landscape. The Holy Trinity Column in Olomouc in the Czech Republic was completed in 1754 and its main purpose was to celebrate the Catholic Church and faith for ending a plague epidemic in Moravia. It is located at the Upper Square in the historical centre of Olomouc. It consists of three levels with 18 statues of saints and a central column with gilded coppers sculptures of the Holy Trinity accompanied by the Archangel Gabriel on the top
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