A Numerical Method for Conformal Mapping of Closed Box Girder Bridges and Its Application

Lianhuo Wu, Zelin Zhou (), Jinxiang Zhang and Mingjin Zhang
Additional contact information
Lianhuo Wu: Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China
Zelin Zhou: China 19th Metallurgical Corporation, Chengdu 610031, China
Jinxiang Zhang: Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China
Mingjin Zhang: Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China

Sustainability, 2023, vol. 15, issue 7, 1-13

Abstract: Conformal mapping has achieved many successes in engineering. It can help to solve some complex fluid flow problems. This study proposed a numerical method for conformal mapping of closed box girder bridges and applied it to flutter performance prediction, which is crucial for ensuring the safety and sustainability of bridge structures. The characteristics of conformal mapping coefficients for the closed box were investigated. Thereafter, a numerical method through searching the conformal mapping coefficients was presented. The results show that the proposed numerical method has a smaller error in the existing research. The conformal mapping of six practical bridges agrees well with the closed box girder shapes, indicating the validity of the proposed method. The flutter prediction results by the proposed method are consistent with the wind tunnel test. The conformal mapping and flutter calculations took no more than ten seconds, showing high computing efficiency. This method is easier to understand and implement without complex mathematical derivation, which is helpful for the extensive application of conformal mapping in bridge engineering.

Keywords: numerical method; conformal mapping; closed box girder; sliding searching method; flutter performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/7/6291/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/7/6291/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:7:p:6291-:d:1117324

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().