Η παρούσα διπλωματική εργασία επιδιώκει τη διερεύνηση της αξιοπιστίας δομικών στοιχείων από οπλισμένο σκυρόδεμα υπό τις διατάξεις των Ευρωκωδίκων
(EL)
The broad objective of this study is to examine the reliability of the structural elements of reinforced
concrete, according to the Eurocodes provisions (EΛ 1990, EΛ 1991, EΛ 1998).
In the first chapter there is an introduction to the broad sense of the stochastic-probabilistic method
in structural analysis. Moreover, the fundamentals of the probability theory and statistics, as well as
the methods of structural reliability subsequently applied, are analyzed (Monte Carlo simulations and
first order reliability method - F.O.R.M). Furthermore, statistic data for the distributions of the load
effects, materials strength and the models uncertainty factors that affect the structure design and
function, are presented.
In the second chapter there is an examination of the probabilistic characteristics of reinforced
concrete beams and columns resistance, both in normal and shear stress. The cases examined in the
study include adequately every possible configuration of the elements, as far as their geometric
features, the analogies of the materials constituting these elements, as well as the features of the
distribution of these materials is concerned.
The third chapter discusses and investigates the beam reliability, both in bending and shear stress,
according to the applying equations (6.10) or (6.10a and 6.10b) as defined by the EN1990.To do so,
the results on the probabilistic characteristics of beams resistance, included in the second chapter,
have been taken into account.
Chapters four, five and six analyze the capacity design requirements for beams in shear strength,
columns in shear strength and columns in bending at beam/column joints respectively. Once again,
the results of the second chapter have been used, in order to reach conclusions on capacity design
reliability.
Finally, in the seventh chapter all conclusions derived from the results included in the previous
chapters are briefly discussed. Also, there is a comparison among the reliability of each examined
case, as well as recommendations to better use the Eurocodes provisions.
(EN)
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