Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Computational Science, Engineering & Technology Series
COMPUTATIONAL TECHNIQUES FOR CIVIL AND STRUCTURAL ENGINEERING
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Coupled Hygro-Thermo-Mechanical Analysis of Charles Bridge, Prague
T. Krejcí1, J. Šejnoha1 and M. Toesca1,2
1Faculty of Civil Engineering, Czech Technical University in Prague
T. Krejcí, J. ejnoha, M. Toesca, "Coupled Hygro-Thermo-Mechanical Analysis of Charles Bridge, Prague", in J. Kruis, Y. Tsompanakis and B.H.V. Topping, (Editors), "Computational Techniques for Civil and Structural Engineering", Saxe-Coburg Publications, Stirlingshire, UK, Chapter 3, pp 59-82, 2015. doi:10.4203/csets.38.3
Keywords: heat and moisture transfer, damage model, masonry arch bridge, finite element method.
Charles Bridge in Prague is one of the most prominent historical structures in Europe. It was founded in 1357 by King Charles IV. The bridge connects two Prague districts, the Lesser Town and the Old Town, separated by the Vltava River. In the past, the bridge underwent a variety of damage, repairs and retrofits. Within the framework of the last reconstruction in 2007 - 2010, a measuring system was installed in the bridge and the temperature and moisture content at selected gauge points have been monitored continuously for a period of two years. This paper presents a non-linear coupled hygro-thermo-mechanical analysis of the current state after the last intervention. The analysis is based on Kiessl and Künzel's heat and moisture transfer model and a three-dimensional orthotropic constitutive damage model. The main indicator of crack localization is the damage parameter. The cogency of temperature and moisture evolution is validated against experimentally obtained temperature fields.
purchase the full-text of this chapter (price £20)