Response surface method strategies coupled with NLFEA for structural reliability analysis of prestressed bridges
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Bibliographic Details
| Author(s): |
Silvia J. Sarmiento Nova
(Luleå University of Technology, Luleå, Sweden)
Jaime Gonzalez-Libreros (Luleå University of Technology, Luleå, Sweden) Gabriel Sas (SINTEF Narvik AS, Rombaksveien E6-47, N-8517 Narvik, Norway Luleå University of Technology, Luleå, Sweden) Rafael A. Sanabria Díaz (University of Campinas, Campinas, Brazil) Maria C. A. Texeira da Silva (University of Campinas, Campinas, Brazil) Leandro M. Trautwein (University of Campinas, Campinas, Brazil) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021 | ||||
| Published in: | IABSE Congress Ghent 2021 | ||||
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| Page(s): | 1813-1822 | ||||
| Total no. of pages: | 10 | ||||
| DOI: | 10.2749/ghent.2021.1813 | ||||
| Abstract: |
The Response Surface Method (RSM) has become an essential tool to solve structural reliability problems due to its accuracy, efficacy, and facility for coupling with Nonlinear Finite Element Analysis (NLFEA). In this paper, some strategies to improve the RSM efficacy without compromising its accuracy are tested. Initially, each strategy is implemented to assess the safety level of a highly nonlinear explicit limit state function. The strategy with the best results is then identified and used to carry out a reliability analysis of a prestressed concrete bridge, considering the nonlinear material behavior through NLFEA simulation. The calculated value of 𝛽 is compared with the target value established in Eurocode for ULS. The results showed how RSM can be a practical methodology and how the improvements presented can reduce the computational cost of a traditional RSM giving a good alternative to simulation methods such as Monte Carlo. |
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| Keywords: |
bridge prestressed concrete structural reliability non-linear analysis response surface method
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| Copyright: | © 2021 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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