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Application of SBRA method in the framework of probabilistic assessment of a supporting system which consist of slender steel-concrete columns
Pustka, David ; Čajka, R. ; Marek, Pavel
Modern reinforced concrete structural systems, consisted of various slender members (i.e. columns, piers, frame legs, etc.), are used more frequent than ever. Effects of external forces on these structures are significantly dependent on their deformations. Reliability assessment of such structures should be thus based on equilibrium of internal and external forces acting on deformed structures. One of these methods is also SBRA (Simulation-Based Reliability Assessment) method, documented in e.g. [1], [2], [3], [8]. Potential of this method is briefly outlined in the study dealing with the reliability analysis of a structural system made by slender reinforced concrete columns. This study is introduced in the full version of this paper stored on the enclosed CDROM.
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SBRA Method and serviceability of structures
Valihrach, J. ; Marek, Pavel
This paper is intended to summarize application of the fully probabilistic Simulation-Based Reliability Assessment method (SBRA) on serviceability assessment in scope of proposed integrated system (SBRA guideline) of reliability assessment of structures. Also, the aim of this paper is to contribute to ongoing debate about probabilistic design and assessment of structures, and to its results integration into future fully probabilistic generation of design codes.
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Basic information serving to developed qualitatively new codes corresponding to probabilistic assessment exposed to dynamic loaded structures
Pirner, Miroš ; Fischer, Ondřej ; Marek, Pavel ; Urushadze, Shota
The first condition for a reliable structure is a well-judged design, correctly and carefully calculated, and based on authentic input values. So fare we were used to take these values from the Codes and in the case that they can very accidentally, this variability can be respected by means of a coefficient. A more realistic approach is to take into account directly the random nature of the property in question, and to describe it in probabilistic terms (by a histogram). This can be done with the use of SBRA (Simulation Based Reliability Assessment) method. Here some considerations are shown, how the actual Czech Codes should be reorganized for probabilistic design, in the case of dynamic civil engineering problems. In this paper the problems of loading are treated; the problems of structural response and some special examples are shown in the full text on CD.
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Loading of bridges and accumulation of fatigue damage
Rieger, M. ; Marek, Pavel
The article presents discussion and recommendation in connection with influence and evaluation methods of bridge loading events. Newly, according to Eurocode 3, two reliability concepts may be considered: damage tolerant concept and safe life concept. Fatigue life assessment may be based on fully probabilistic concept, too. The loading as well as response history should be taken into consideration and a fatigue criterion, based on the stress-range concept, should be applied. Crack grown may be modeled using LEFM procedures, initial crack size ai may be determined as input random variable with log-normal distribution.
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Rules of the game of the SBRA method and codes on structural reliability assessment
Marek, Pavel ; Guštar, M.
Already for twenty years deliberation has been focussed to the improvement and application of the probabilistic method known as SBRA (Simulation Based Reliability Assessment), based on development of the ever-increasing potential of computer technology. At present this progress in computer technology requires the formulation of “rules of the game“ for the SBRA method and guidelines which will serve as a draft for a new class of codes for the design of structures and for assessment of their reliability which will ensure safety, serviceability and durability. In the future, the SBRA method may also serve as a steering component in the so called integrated design.
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