TY - JOUR
T1 - Analytical analysis on the static support reactions of single-column pier bridges using the grey wolf optimizer
AU - Cao, Liang
AU - Zhou, Hailei
AU - Peng, Weibing
AU - Liu, Jiepeng
AU - Chen, Y. Frank
N1 - Funding Information:
The authors are grateful for the financial support provided by the National Natural Science Foundation of China (Grant No. 52278175, and 52278227) and the Fundamental Research Funds for the Central Universities (Grant No. 531118010784).
Publisher Copyright:
© 2023 Institution of Structural Engineers
PY - 2023/9
Y1 - 2023/9
N2 - To obtain the support reactions of single-column pier girder bridges for studying the bridge stability against overturning, the bridge deck can be treated as an orthotropic thin plate with point supports in the domain. A semi-analytical formula for support reactions is then derived by a hybrid method using the grey wolf optimizer. To avoid calculation errors and improve the computational efficiency, dimensionless parameters α and β are introduced. Compared with the finite element analysis results, the maximum error resulting from the derived analytical formula is about ± 15% with the larger error occurring in the cases with small support reactions, which is considered practically acceptable. The analytical solution is then used in the parametric analysis to investigate the effects of span, support location, and bearing width on the single-column pier bridge under four vehicles. The analysis shows that the proposed method is reasonably accurate, highly efficient, and effective.
AB - To obtain the support reactions of single-column pier girder bridges for studying the bridge stability against overturning, the bridge deck can be treated as an orthotropic thin plate with point supports in the domain. A semi-analytical formula for support reactions is then derived by a hybrid method using the grey wolf optimizer. To avoid calculation errors and improve the computational efficiency, dimensionless parameters α and β are introduced. Compared with the finite element analysis results, the maximum error resulting from the derived analytical formula is about ± 15% with the larger error occurring in the cases with small support reactions, which is considered practically acceptable. The analytical solution is then used in the parametric analysis to investigate the effects of span, support location, and bearing width on the single-column pier bridge under four vehicles. The analysis shows that the proposed method is reasonably accurate, highly efficient, and effective.
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U2 - 10.1016/j.istruc.2023.07.013
DO - 10.1016/j.istruc.2023.07.013
M3 - Article
AN - SCOPUS:85164222663
SN - 2352-0124
VL - 55
SP - 2003
EP - 2012
JO - Structures
JF - Structures
ER -