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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reliability analysis of truss structures considering complete failure paths and using the FLHB model

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Author(s):
Túlio Raunyr Cândido Felipe [1] ; Edson Denner Leonel [2] ; Vladimir Guilherme Haach [3] ; André Teófilo Beck [4]
Total Authors: 4
Affiliation:
[1] Marinha do Brasil. Diretoria de Obras Civis da Marinha - Brasil
[2] Universidade de São Paulo. Escola de Engenharia de São Carlos. Departamento de Engenharia de Estruturas - Brasil
[3] Universidade de São Paulo. Escola de Engenharia de São Carlos. Departamento de Engenharia de Estruturas - Brasil
[4] Universidade de São Paulo. Escola de Engenharia de São Carlos. Departamento de Engenharia de Estruturas - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Rev. IBRACON Estrut. Mater.; v. 14, n. 4 2021-05-05.
Abstract

abstract: The study of progressive collapse of structures using numerical models requires accurate modeling of geometrical nonlinearity and material failure behavior. Numerical models must demonstrate stability, such that localized member failures do not trigger numerical instabilities. Also, algorithms should be efficient, to limit the computational burden of analyzing multiple responses when considering the effects of uncertain loads, geometric and material variables. In this scientific domain, a comprehensive non-linear ductile-damage truss-element model has been recently presented by the authors. The model accounts for the geometrical and material nonlinearities observed during progressive collapse of structural systems. In this paper, the Felipe-Leonel-Haach-Beck (FLHB) model is calibrated to describe the response of Ultra-High-Performance Fiber Reinforced Concrete (UHPFRC). Based on a limited number of UHPFRC experimental curves, statistics of FLHB model parameters are obtained. These are employed in the probabilistic analysis of failure paths of truss structures under progressive collapse. Monte Carlo Simulation and the First Order Reliability Method are employed in the probabilistic failure path analyses. Six application examples demonstrate the accuracy, robustness, and efficiency of the FLHB model in evaluation of failure paths of realistic structural systems. (AU)

FAPESP's process: 17/01243-5 - Reliability based design optimization
Grantee:André Teófilo Beck
Support Opportunities: Regular Research Grants