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This paper discusses a structural reliability-based code calibration (RBCC) procedure for determining optimal partial safety factors for pultruded glass fibre-reinforced polymer (pGFRP) square and rectangular hollow section (SHS and RHS) columns, susceptible to local buckling (web- and flange-triggered), for the two resistance models (Lekhnitskii and Kollár) prescribed in CEN/TS 19101:2022: “Design of Fibre-Polymer Composite Structures”. This investigation adopts the rigorous methodology established by the Joint Committee of Structural Safety (JCSS), and takes into account (i) various sources of uncertainty, including variability in material properties, geometrical deviations, loads, and uncertainties of the resistance models and load effect determination; (ii) the resistance format prescribed in CEN/TS 19101:2022 for structural members; (iii) the target reliability index specified in EN 1990:2023, and (iv) a significant number of design cases (combinations of geometries, materials, and permanent-to-variable load ratios). The results obtained through the RBCC procedure are then presented and discussed. Lastly, the paper closes with relevant concluding remarks and recommends partial safety factors for semi-probabilistic design rules for pGFRP RHS and SHS columns susceptible to local buckling.

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Reliability Analysis for Improved Design of Pultruded GFRP SHS and RHS Columns Prone to Local Buckling

  • 会议论文

  • 发表日期：

    2026年

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  • André D. Martins,
  • Ângelo P. Teixeira,
  • João R. Correia,
  • João A. Lazzari,
  • Nuno Silvestre

摘要

This paper discusses a structural reliability-based code calibration (RBCC) procedure for determining optimal partial safety factors for pultruded glass fibre-reinforced polymer (pGFRP) square and rectangular hollow section (SHS and RHS) columns, susceptible to local buckling (web- and flange-triggered), for the two resistance models (Lekhnitskii and Kollár) prescribed in CEN/TS 19101:2022: “Design of Fibre-Polymer Composite Structures”. This investigation adopts the rigorous methodology established by the Joint Committee of Structural Safety (JCSS), and takes into account (i) various sources of uncertainty, including variability in material properties, geometrical deviations, loads, and uncertainties of the resistance models and load effect determination; (ii) the resistance format prescribed in CEN/TS 19101:2022 for structural members; (iii) the target reliability index specified in EN 1990:2023, and (iv) a significant number of design cases (combinations of geometries, materials, and permanent-to-variable load ratios). The results obtained through the RBCC procedure are then presented and discussed. Lastly, the paper closes with relevant concluding remarks and recommends partial safety factors for semi-probabilistic design rules for pGFRP RHS and SHS columns susceptible to local buckling.