Year: 2023
Type: conference-paper
Abstract: Reliability-based bridge assessment is an accepted way for assessing bridges in many countries under normal traffic loads. Target reliabilities are either calculated based on available information or specified in codes or guidelines. Adjusted partial factors for resistance and load effects can then show that a structure is fit to carry a specified load, even if code based partial factors may have condemned it, or implied strengthening requirements. Loads that exceed the traffic load models of bridge design codes are becoming more frequent. Examples of such loads are components for wind turbines or components for nuclear power plants. These loads are infrequent and require special provisions for reliability-based assessment. This paper provides a framework for such assessment. In the presented case study, the target reliability is governed by economic optimisation. The resulting utilisation ratio for the assessment based on the adjusted partial factors is significantly lower (by about 23 %) compared to that based on design values, leading to a more favourable analysis for the bridge.
Source: HAL
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4392281613