Polytechnic and design, Vol. 11 No. 2, 2023.
Review article
https://doi.org/10.19279/TVZ.PD.2023-11-2-07
ROBUSTNESS EVALUATION OF TIMBER STRUCTURES
Dean Čizmar
; Zagreb University of Applied Sciences, Zagreb, Croatia
*
Ivan Volarić
; Zagreb University of Applied Sciences, Zagreb, Croatia
Marija Babić Tončić
; Zagreb University of Applied Sciences, Zagreb, Croatia
Matija Vrkljan
; University North, Varaždin, Croatia, Student
* Corresponding author.
Abstract
When creating load-bearing structure projects, we strive for sufficient reliability of the structure against failure. Hundreds of years ago, modern static programs, complex models of action and resistance, and materials with declared strengths were not available, so historical constructions were designed in such a way as to have additional resistance. Modern load-bearing structures are optimized with regard to design loads, but exceptional loads are often not taken into account. A special interest in the robustness of structures appears among professionals after the collapse of the World Trade Center in 2001 in New York. In the past decades, there have been many attempts to mathematically define the robustness of a structure, but a widely accepted definition does not yet exist. Mathematical models for calculating robustness can be divided into deterministic, probabilistic and models based on risk theory. This article focuses on analyze the timber roof structure of the church in Krauchthal, Switzerland, which is about 300 years old, with an axial span of the structure of 11.5 meters. The calculation of the robustness of the structure in question was made according to the probabilistic approach, and after the calculations, the reliability indices are very high. After taking general analysis and cross section analysis into account, it can be concluded that the structure has significant robustness.
Keywords
robustness of structures; reliability of structures; probabilistic approach; timber roof structure
Hrčak ID:
308971
URI
Publication date:
20.7.2023.
Visits: 200 *