Failure Resistance of the Historic Stone Bridge Structure of Charles Bridge. I: Susceptibility to Nonstress Effects
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Volume 22, Issue 2
Abstract
The monitoring of deformations of the stone structure of Charles Bridge in Prague proved the gravity and relevance of nonstress effects (temperature, moisture content) on cyclic deformations and permanent strain accompanied by a gradual disintegration of its stone masonry, growing tilt of the breast walls, and development of cracks in the masonry of the stone bridge structure. Each deformation cycle is accompanied by a gradual growth in permanent deformations. The “unmanifested” primary deformation due to, e.g., a temperature change causes a mechanical state of tension, and it is mainly the tensile stresses thus arising that contribute to the development of tensile cracks in the stone masonry.
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Acknowledgements
This paper was written with support from research Project No. VZ1 MSM 6840770001, “Reliability, optimization and durability of building materials and structures.”
References
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Witzany, J., et al. (2002). “Karlův most-hodnocení stavebnĕ technického stavu (Assessment of current structural and maintenance condition of Charles Bridge).” Stavebni Obzor, 11(8), 225–249 (in Czech).
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Witzany, J. et al. (2005). “Comprehensive assessment of a theoretical and experimental investigation of Charles Bridge 1994 to 2004. 1.” Stavebni Obzor,14(4), 97–105 (in Czech).
Witzany, J., and Jäger, W. (2005). “Die Karlsbrücke in Prag, Bewertung des bautechnischen Zustandes.” Mauerwerk, 9(3), 108–119 (in German).
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Published In
Journal of Performance of Constructed Facilities
Volume 22 • Issue 2 • April 2008
Pages: 71 - 82
Copyright
© 2008 ASCE.
History
Received: Aug 10, 2006
Accepted: Dec 28, 2006
Published online: Apr 1, 2008
Published in print: Apr 2008
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