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Steel and Composite Structures
  Volume 48, Number 4, August25 2023 , pages 385-403

Damage and deformation of new precast concrete shear wall with plastic damage relocation
Dayang Wang, Qihao Han, Shenchun Xu, Zhigang Zheng, Quantian Luo and Jihua Mao

    To avoid premature damage to the connection joints of a conventional precast concrete shear wall, a new precast concrete shear wall system (NPSW) based on a plastic damage relocation design concept was proposed. Five specimens, including one monolithic cast-in-place concrete shear wall (MSW) as a reference and four NPSWs with different connection details (TNPSW, INPSW, HNPSW, and TNPSW-N), were designed and tested by lateral low-cyclic loading. To accurately assess the damage relocation effect and quantify the damage and deformation, digital image correlation (DIC) and conventional data acquisition methods were used in the experimental program. The concrete cracking development, crack area ratio, maximum residual crack width, curvature of the wall panel, lateral displacement, and deformed shapes of the specimens were investigated. The results showed that the plastic damage relocation design concept was effective; the initial cracking occurred at the bottom of the precast shear wall panel (middle section) of the proposed NPSWs. The test results indicated that the crack area ratio and the maximum residual crack width of the NPSWs were less than those of the MSW. The NPSWs were deformed continuously; significant distortions did not occur in their connection regions, demonstrating the merits of the proposed NPSWs. The curvatures of the middle sections of the NPSWs were lower than that of the MSW after a drift ratio of 0.5%. Among the NPSWs, HNPSW demonstrated the best performance, as its crack area ratio, concrete damage, and maximum residual crack width were the lowest.
Key Words
    damage; deformation; digital image correlation; experimental study; precast concrete shear wall
Dayang Wang and Shenchun Xu:School of Civil Engineering, Guangzhou University, Guangzhou 510006, China

Qihao Han: 1)School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
2) School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

Zhigang Zheng:State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Engineering Co. Ltd.,
Shenzhen 518172, China

Quantian Luo:School of Mechanical and Mechatronic Engineering, University of Technology Sydney, Sydney 2007, Australia

Jihua Mao:Guangzhou Guangjian Construction Engineering Testing Center Co., Ltd., Guangzhou 510699, China

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