Details
| Original language | English |
|---|---|
| Pages (from-to) | 146-159 |
| Number of pages | 14 |
| Journal | Advances in Structural Engineering |
| Volume | 23 |
| Issue number | 1 |
| Early online date | 31 Jul 2019 |
| Publication status | Published - 1 Jan 2020 |
Abstract
With the capacity models in the 2004 edition of the European Committee for Standardization’s Standard Design of Concrete Structures, a more realistic limit state function is obtained for reinforced concrete columns with random loads eccentricity. Using this function, the applicability of the code-based design factors is discussed. Taking the wind-dominated combination as an example, the probabilistic distribution of loads eccentricity and the statistics of column resistance are analyzed for representative cases. The analysis indicates that the possible loads eccentricity is scattered over a large range, and the probabilistic model of column resistance varies from case to case, which is largely different from the resistance model assumed in previous reliability calibration. With Monte Carlo simulation, the column reliability and the contributions of both tension failure and compression failure to the total failure probability are calculated and obtained for different cases. The results show that the fixed loads eccentricity criterion underestimates differences in the reliability of columns for different loads eccentricity cases and overestimates the column reliability in some tension failure cases. Furthermore, it is found that the tension failure mode contributes most to the total failure probability for not only some columns designed to fail in tension failure but also for some columns designed to fail in compression failure. To attain a robust design, a group of optimum wind load factors varying with cases is recommended. The new calibration results prove that the recommended wind local factors can achieve a better goal.
Keywords
- contribution analysis, Eurocode-based design, random loads eccentricity, reinforced concrete columns, reliability evaluation, wind-dominated combination
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
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In: Advances in Structural Engineering, Vol. 23, No. 1, 01.01.2020, p. 146-159.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Reliability evaluation of reinforced concrete columns designed by Eurocode for wind-dominated combination considering random loads eccentricity
AU - Jiang, Youbao
AU - Peng, Suixiang
AU - Beer, Michael
AU - Wang, Lei
AU - Zhang, Jianren
N1 - Funding information: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The research is supported by the National Natural Science Foundation of China (Grant No. 51678072), the National Key Basic Research Program of China (Grant No. 2015CB057705), and the Key Discipline Foundation of Civil Engineering of Changsha University of Science and Technology (18ZDXK01). This support is gratefully acknowledged.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - With the capacity models in the 2004 edition of the European Committee for Standardization’s Standard Design of Concrete Structures, a more realistic limit state function is obtained for reinforced concrete columns with random loads eccentricity. Using this function, the applicability of the code-based design factors is discussed. Taking the wind-dominated combination as an example, the probabilistic distribution of loads eccentricity and the statistics of column resistance are analyzed for representative cases. The analysis indicates that the possible loads eccentricity is scattered over a large range, and the probabilistic model of column resistance varies from case to case, which is largely different from the resistance model assumed in previous reliability calibration. With Monte Carlo simulation, the column reliability and the contributions of both tension failure and compression failure to the total failure probability are calculated and obtained for different cases. The results show that the fixed loads eccentricity criterion underestimates differences in the reliability of columns for different loads eccentricity cases and overestimates the column reliability in some tension failure cases. Furthermore, it is found that the tension failure mode contributes most to the total failure probability for not only some columns designed to fail in tension failure but also for some columns designed to fail in compression failure. To attain a robust design, a group of optimum wind load factors varying with cases is recommended. The new calibration results prove that the recommended wind local factors can achieve a better goal.
AB - With the capacity models in the 2004 edition of the European Committee for Standardization’s Standard Design of Concrete Structures, a more realistic limit state function is obtained for reinforced concrete columns with random loads eccentricity. Using this function, the applicability of the code-based design factors is discussed. Taking the wind-dominated combination as an example, the probabilistic distribution of loads eccentricity and the statistics of column resistance are analyzed for representative cases. The analysis indicates that the possible loads eccentricity is scattered over a large range, and the probabilistic model of column resistance varies from case to case, which is largely different from the resistance model assumed in previous reliability calibration. With Monte Carlo simulation, the column reliability and the contributions of both tension failure and compression failure to the total failure probability are calculated and obtained for different cases. The results show that the fixed loads eccentricity criterion underestimates differences in the reliability of columns for different loads eccentricity cases and overestimates the column reliability in some tension failure cases. Furthermore, it is found that the tension failure mode contributes most to the total failure probability for not only some columns designed to fail in tension failure but also for some columns designed to fail in compression failure. To attain a robust design, a group of optimum wind load factors varying with cases is recommended. The new calibration results prove that the recommended wind local factors can achieve a better goal.
KW - contribution analysis
KW - Eurocode-based design
KW - random loads eccentricity
KW - reinforced concrete columns
KW - reliability evaluation
KW - wind-dominated combination
UR - http://www.scopus.com/inward/record.url?scp=85070203424&partnerID=8YFLogxK
U2 - 10.1177/1369433219866089
DO - 10.1177/1369433219866089
M3 - Article
AN - SCOPUS:85070203424
VL - 23
SP - 146
EP - 159
JO - Advances in Structural Engineering
JF - Advances in Structural Engineering
SN - 1369-4332
IS - 1
ER -