Mechanical behavior of ECC-reinforced coupled shear wall
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 12 April 2024
Abstract
Purpose
Based on the weak seismic performance and low ductility of coupled shear walls, engineered cementitious composites (ECC) is utilized to strengthen it to solve the deformation problem in tall buildings more effectively and study its mechanical properties more deeply.
Design/methodology/approach
The properties of reinforced concrete coupled shear wall (RCCSW) and reinforced ECC coupled shear wall (RECSW) have been studied by numerical simulation, which is in good agreement with the experimental results. The reliability of the finite element model is verified. On this basis, a detailed parameter study is carried out, including the strength and reinforcement ratio of longitudinal rebar, the placement height of ECC in the wall limb and the position of ECC connecting beams. The study indexes include failure mode and the skeleton curve.
Findings
The results suggest that the bearing capacity of RECSW is significantly affected by the ratio of longitudinal rebar. When the ratio of longitudinal rebar increases from 0.47% to 3.35%, the bearing capacity of RECSW increases from 250 kN to 303 kN, an increase of 21%. The strength of longitudinal rebar has little influence on the bearing capacity of RECSW. When the strength of the longitudinal rebar increases, the bearing capacity of RECSW increases little. The failure mode of RECSW can be improved by lowering the casting height of the ECC beam in a certain range.
Originality/value
In this paper, ECC is used to strengthen the coupled shear wall, and the accuracy of the finite element model is verified from the failure mode and skeleton curve. On this basis, the casting height of the ECC casting wall limb, the strength and reinforcement ratio of longitudinal rebar and the position of the ECC beam are studied in detail.
Keywords
Acknowledgements
This study is supported by three key funds: (1) Science and technology planning project of Henan Province, China (222102320027), (2) Science and technology planning project of Anyang, Henan Province, China (2023C01SF197) and (3) College students innovation and entrepreneurship training program of Henan, Henan Province, China (202311330017).
Citation
Zhao, J., Zhang, H., Liu, J., Gong, Y., Wan, S., Liu, L., Li, J., Song, Z., Zhang, S. and Li, Q. (2024), "Mechanical behavior of ECC-reinforced coupled shear wall", International Journal of Structural Integrity, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/IJSI-12-2023-0147
Publisher
:Emerald Publishing Limited
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