1. Probabilistischer Nachweis einer Spannbetonbrücke – Teil 1: Semiprobabilistische Nachrechnung und probabilistische Modellierung einer einfeldrigen, sechsstegigen Plattenbalkenbrücke.
- Author
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Özlü, Caner, Küttenbaum, Stefan, Kainz, Christian, Braml, Thomas, and Taffe, Alexander
- Subjects
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PRESTRESSED concrete bridges , *INFRASTRUCTURE (Economics) , *BUDGET , *STOCHASTIC models , *CONCRETE analysis , *TEST methods - Abstract
Probabilistic reliability analysis of a prestressed concrete bridge – part 1 – Semi‐probabilistic reassessment and probabilistic modeling of a single‐span 6‐webbed t‐beam bridge Maintaining the existing transportation infrastructure is a major challenge as the structures continue to age, the traffic loads increase and comprehensive replacement is impossible given limited budgets and resources. On existing structures present material characteristics, geometries or loads can be recorded on an object‐specific basis. In Germany the reassessment of existing bridges is carried out in accordance with the reassessment guidelines at the stages 1 and 2 using the semi‐probabilistic partial safety concept. Only in exceptional cases will a measurement‐based assessment or a scientific analysis acc. to levels 3 and 4 be carried out. However the inclusion of additional information from condition assessment offers many advantages for a realistic reassessment. In probabilistic calculation methods, such information can be taken directly into account. The aim of this two‐part article is to present the potentials and advantages of directly including the results of non‐destructive testing methods when assessing the condition of bridge structures. The concept is presented on a prestressed concrete bridge. The first part deals with the possibilities for transferring the input values of the usual semi‐probabilistic calculation into stochastic models. Starting from the semi‐probabilistic reassessment acc. to current regulations, the probabilistic modeling of all relevant basic variables for the ultimate limit states of bending, shear and torsion is carried out. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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