An experimental investigation and machine learning-based prediction for seismic performance of steel tubular column filled with recycled aggregate concrete

Author:

Tang Yunchao123,Wang Yufei4,Wu Dongxiao5,Liu Zhonghe6,Zhang Hexin7,Zhu Ming8,Chen Zheng1,Sun Junbo9,Wang Xiangyu4

Affiliation:

1. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University , Nanning , 530004 , China

2. Guangdong Lingnan Township Green Building Industrialization Engineering Technology Research Center, College of Urban and Rural Construction, Zhongkai University of Agriculture and Engineering , Guangzhou , 510225 , China

3. Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, School of Civil Engineering and Architecture, Guangxi University , Nanning , 530004 , China

4. School of Design and Built Environment, Curtin University , Perth , WA 6102 , Australia

5. College of Urban and Rural Construction, Zhongkai University of Agriculture and Engineering , Guangzhou , 510225 , China

6. Liyang Market Comprehensive Inspection and Testing Center , Jiangsu, 213300 , China

7. School of Engineering and the Built Environment, Edinburgh Napier University , 10 Colinton Road , Edinburgh , Scotland, EH10 5DT , UK

8. School of Civil Engineering and Architecture, East China JiaoTong University , Nanchang , 530004 , China

9. Institute for Smart City of Chongqing University in Liyang, Chongqing University , Jiangsu, 213300 , China

Abstract

Abstract This work presents the design and application of a low-cycle reciprocating loading test on 23 recycled aggregate concrete-filled steel tube columns and 3 ordinary concrete-filled steel tube columns. Additionally, a systematic study on the influence of various parameters (e.g., slenderness ratio, axial compression ratio, etc.) was conducted on the seismic performance of the specimens. The results show that all the specimens have good hysteresis performance and a similar development trend of skeleton curve. The influence of slenderness ratio on the seismic index of the specimens is more significant than that of the axial compression ratio and the steel pipe wall thickness. Furthermore, artificial intelligence was applied to estimate the influence of parameter variation on the seismic performance of concrete columns. Specifically, Random Forest with hyperparameters tuned by Firefly Algorithm was chosen. The high correlation coefficients (R) and low root mean square error values from the prediction results showed acceptable accuracy. In addition, sensitivity analysis was applied to rank the influence of the aforementioned input variables on the seismic performance of the specimens. The research results can provide experimental reference for the application of steel tube recycled concrete in earthquake areas.

Publisher

Walter de Gruyter GmbH

Subject

Condensed Matter Physics,General Materials Science

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