Influence of geometrical imperfections and residual stresses on the reliability of high strength steel welded I-section columns using Monte Carlo simulation

被引：7

作者：

Filho, Jose Osvaldo Ferreira ^{[1
,5
]}

da Silva, Luis Simoes ^{[1
]}

Tankova, Trayana ^{[2
]}

Carvalho, Hermes ^{[3
,4
]}

机构：

[1] Univ Coimbra, Dept Civil Engn, ISISE, ARISE, Coimbra, Portugal

[2] Delft Univ Technol, Dept Engn Struct, Delft, Netherlands

[3] Univ Fed Minas Gerais, Dept Struct Engn, Belo Horizonte, MG, Brazil

[4] Univ Sao Paulo, Dept Struct Engn & Geotech, Sao Paulo, Brazil

[5] Univ Coimbra, Dept Civil Engn, Polo 2,Pinhal Marrocos, P-3030290 Coimbra, Portugal

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2024年 / 215卷

关键词：

High strength steel; Buckling resistance of columns; Reliability analysis; Monte Carlo simulation; Eurocode; 3; TORSIONAL BUCKLING RESISTANCE; STATISTICAL EVALUATION; H-SECTIONS; BEHAVIOR; DESIGN; TESTS; VARIABILITY; BEAMS;

D O I：

10.1016/j.jcsr.2024.108548

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper aims to assess the influence of geometrical imperfections and residual stresses on the reliability of the stability design rules for steel columns in Eurocode 3 considering a full probabilistic approach and further validate the new buckling curves in the scope of the ongoing revision of the Structural Eurocodes. A reliability assessment of major- and minor-axis flexural buckling of high-strength steel (HSS) welded I-section columns was performed, considering all basic variables as random, including the geometrical and material imperfections, in addition to the material properties of steel and the geometry of the cross-section. An advanced finite element model calibrated with experimental test results is used to perform a very large (290,126 simulations) parametric study covering the majority of practical geometries. Subsequently, Monte Carlo simulation is used to estimate the design values of the buckling resistance that correspond to the target probability of failure of the Eurocodes. Finally, these values are compared to the proposed buckling curves for HSS columns, showing good agreement and supporting their adoption in the revised EN 1993-1-1. It is also concluded that it is on the safe side to carry out a reliability assessment with deterministic reference values for structural imperfections.

引用

页数：22

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