Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)

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Study of Equivalent Bending Moment Coefficient of Concrete Filled Steel Tubular under Lateral Force

Authors
Yang Wang1, Zhijun Wang2, Lanying Zhu3, *
1School of Civil Engineering, Chongqing University, Master, Chongqing, China
2School of Civil Engineering, Chongqing University, Professor, Chongqing, China
3School of Civil Engineering, Chongqing University, Associate Professor, Chongqing, China
*Corresponding author. Email: zhuly@cqu.edu.cn
Corresponding Author
Lanying Zhu
Available Online 30 June 2024.
DOI
10.2991/978-94-6463-449-5_34How to use a DOI?
Keywords
concrete-filled steel tubular column; lateral forces; second-order effect; equivalent bending moment coefficient
Abstract

In the hybrid structure of Concrete filled steel tubular columns and light steel frames, under horizontal loading, the secondary structure exerts two lateral forces on the main frame columns, resulting in a pronounced second-order deflection effect on the main structural columns. To investigate the influence of lateral forces on the second-order deflection effect, axial force and lateral force were taken as the main variables to conduct simulation analysis on medium-length circular concrete-filled steel tubular column. The results show that the specimens exhibited overall bending failure, and the ultimate load-bearing capacity of the structure decreased with the increase of the slenderness ratio and eccentricity; The lateral deflection increases rapidly during elastoplastic stage, and the second-order effect is significant; the equivalent bending moment coefficient increases with the increase of lateral force. After comprehensively considering the influence of the end bending moment ratio, axial force, and lateral force on the equivalent moment coefficient, a proposed formula for the equivalent moment coefficient of concrete-filled steel tubular column under different lateral force effects is derived through extensive parameter analysis, with the magnitude of lateral force as the primary influencing factor.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
Series
Atlantis Highlights in Engineering
Publication Date
30 June 2024
ISBN
10.2991/978-94-6463-449-5_34
ISSN
2589-4943
DOI
10.2991/978-94-6463-449-5_34How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yang Wang
AU  - Zhijun Wang
AU  - Lanying Zhu
PY  - 2024
DA  - 2024/06/30
TI  - Study of Equivalent Bending Moment Coefficient of Concrete Filled Steel Tubular under Lateral Force
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 348
EP  - 355
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_34
DO  - 10.2991/978-94-6463-449-5_34
ID  - Wang2024
ER  -