Experimental study of rectangular multi-partition steel-concrete composite shear walls. (September 2018)

• Record Type: Journal Article
• Authors: Guo, Lanhui; Wang, Yunhe; Zhang, Sumei
• Is Part Of: Thin-walled structures. Volume 130(2018)
• Page Start: 577
• Page End: 592
• Publication Date: 2018-09
• Subjects: Composite shear walls -- Compressive behavior -- Seismic behavior -- Axial load ratio -- Multi-partition; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2018.06.011
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: Multi-partition composite shear walls have the strong points, such as high load-carrying capacity, good ductility, excellent energy dissipation capacity and fast construction speed. Even if they were used in the buildings, there was a little research work on this kind of composite shear walls. To study the axial behavior and cyclic behavior of multi-partition composite shear walls, six axially loaded specimens were tested, and two specimens were tested under horizontal cyclic load. Through testing of specimens, the damage progression, failure mechanism, stiffness and energy dissipation of composite shear walls were investigated. The experimental results showed that this kind shear walls under axial load had high load-carrying capacity and good ductility. The steel section could confine the core concrete, whose capacity was higher than that the summation capacity of steel section and core concrete. The shear walls exhibited excellent energy dissipation ability under high axial load ratio. Because of the confinement of steel section, the specimen showed higher energy dissipation capacity with the increasing of axial load ratio. However, the ductility of the specimen under cyclic load decreased with the increasing of axial load ratio. The experimental results were compared with the calculated results calculated by EC4, AISC and CECS. The results showed that all design codes underestimated the axial compressive capacity of the specimens. For specimens subjected to cyclic load, the results based on EC4 were the nearest to the experimental results. Highlights: Six rectangular multi-partition composite shear walls were tested under axial load. Two composite shear walls subjected to cyclic load under high axial load ratio were tested. Composite shear walls exhibited high load-carrying capacities, good ductility and excellent energy dissipation ability. The energy dissipation capacity of shear walls increased with the increasing of axial load ratio. The results calculated by the EC4, AISC and CECS are conservative comparing with the experimental results.