Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)

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Study on seismic performance of high-strength concrete shear wall after fire considering the influence of spalling

Authors
Yukun Ji1, *, Jun Chen1, Qing Wu1, Yunhu Xu1
1School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang, China
*Corresponding author. Email: jiyukun024@163.com
Corresponding Author
Yukun Ji
Available Online 13 June 2024.
DOI
10.2991/978-94-6463-435-8_7How to use a DOI?
Keywords
concrete shear walls; post-fire; spalling and bursting; seismic performance; finite element analysis
Abstract

After the concrete shear wall is exposed to fire, the deterioration of concrete and steel reinforcement caused by fire, especially the spalling of high-strength concrete at high temperatures, aggravates the decrease of shear capacity and seismic performance of the wall. Based on the existing HSC shear wall fire test, this paper constructs the seismic performance model of HSC shear wall after fire considering concrete spalling with the help of MATLAB and OpenSees. The effects of different concrete strengths, the thickness of the protective layer and axial compression ratio of the wallboard on the performance of the shear wall after fire were analyzed. The results show that the spalling of concrete further reduces the residual performance of HSC shear wall after fire, especially in the horizontal bearing capacity. The increase of spalling depth leads to the decrease of horizontal bearing capacity. The higher the strength of the shear wall, the more obvious the decrease of the seismic performance. The increase of the thickness of the protective layer will accelerate the decrease of the horizontal bearing capacity of the shear wall.

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 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
Series
Atlantis Highlights in Engineering
Publication Date
13 June 2024
ISBN
10.2991/978-94-6463-435-8_7
ISSN
2589-4943
DOI
10.2991/978-94-6463-435-8_7How 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  - Yukun Ji
AU  - Jun Chen
AU  - Qing Wu
AU  - Yunhu Xu
PY  - 2024
DA  - 2024/06/13
TI  - Study on seismic performance of high-strength concrete shear wall after fire considering the influence of spalling
BT  - Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
PB  - Atlantis Press
SP  - 41
EP  - 48
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-435-8_7
DO  - 10.2991/978-94-6463-435-8_7
ID  - Ji2024
ER  -