2023
DOI: 10.3390/app14010112
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Seismic Risk Analysis of Existing Link Slab Bridges Using Novel Fragility Functions

Fabrizio Scozzese,
Lucia Minnucci

Abstract: In this paper, a comprehensive probabilistic framework is proposed and adopted to perform seismic reliability and risk analysis of existing link slab (LS) bridges, representing a widely diffused structural typology within the infrastructural networks of many countries worldwide. Unlike classic risk analysis methods, innovative fragility functions are used in this work to retrieve more specific and detailed information on the possible failure modes, without limiting the analysis to the global failure conditions… Show more

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Cited by 4 publications
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“…Due to different sources of uncertainties 21, the basic variables 𝒙 are described by a vector of random variables (r.v.) 𝑿 , whose statistical properties are provided by the joint probability distribution function 𝑓 𝑋 (𝒙), so that the failure probability 𝑃 𝑓 , which is a probabilistic measure of the structural performance 22, can be evaluated by: 𝑃 𝑓 = ∫ 𝐼(𝒙)𝑓 𝑋 (𝒙)𝑑𝒙 (1) where the index function 𝐼(𝒙) in Equation ( 1) is defined as follows: 𝐼(𝒙) = 1 if 𝑔(𝒙) < 𝑔̅ , otherwise 𝐼(𝒙) = 0. The system response is satisfactory if 𝑃 𝑓 < 𝑃 𝑓 ̅ in which the target value 𝑃 𝑓 ̅ , is usually based on the evaluation of economic and social consequences due to failure.…”
Section: Reliability Evaluation and Notationmentioning
confidence: 99%
“…Due to different sources of uncertainties 21, the basic variables 𝒙 are described by a vector of random variables (r.v.) 𝑿 , whose statistical properties are provided by the joint probability distribution function 𝑓 𝑋 (𝒙), so that the failure probability 𝑃 𝑓 , which is a probabilistic measure of the structural performance 22, can be evaluated by: 𝑃 𝑓 = ∫ 𝐼(𝒙)𝑓 𝑋 (𝒙)𝑑𝒙 (1) where the index function 𝐼(𝒙) in Equation ( 1) is defined as follows: 𝐼(𝒙) = 1 if 𝑔(𝒙) < 𝑔̅ , otherwise 𝐼(𝒙) = 0. The system response is satisfactory if 𝑃 𝑓 < 𝑃 𝑓 ̅ in which the target value 𝑃 𝑓 ̅ , is usually based on the evaluation of economic and social consequences due to failure.…”
Section: Reliability Evaluation and Notationmentioning
confidence: 99%