The cyclic bond behavior between H-shaped steel and recycled concrete. (October 2022)

• Record Type: Journal Article
• Authors: Li, Hechao; Xue, Jianyang; Ren, Rui; Zhang, Xin; Zheng, Jianguo; Qian, Chunyu
• Is Part Of: Structures. Volume 44(2022)
• Page Start: 306
• Page End: 322
• Publication Date: 2022-10
• Subjects: Steel-recycled concrete composite structures -- Recycled concrete aggregate -- Cyclic push-out load -- Bond behavior -- Seismic damage; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2022.08.004
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: To investigate the cyclic bond behavior between H-shaped steel and recycled concrete, ten specimens were adopted and tested under push-out load. The main parameters are recycled concrete aggregate (RCA) replacement percentage, loading scheme, bond position, and H-shaped steel dimension. Based on the test results, the effect of the main parameters on the cyclic bond behavior was analyzed. It is found that the damage first appears on both ends of the bond interface and then gradually extends to the middle area during the cyclic loading. At the same time, the cyclic bond strength exhibits a significant degradation compared to the static bond strength, and the cyclic bond strength decreases with the increased RCA replacement percentage and H-shaped steel dimension. In addition, the seismic damage of the bond interface is quantitatively analyzed based on the Park-Ang seismic damage model, and the influence of the main parameters on the seismic damage is analyzed. It suggests that the seismic damage of specimens with RCA develops more rapidly than those with natural aggregate (NA). As the H-shaped steel dimension increases, the seismic damage of specimens develops more and more rapidly.