Seismic performance of semi-rigid steel frame infilled with prefabricated damping wall panels

Seismic behavior of novel low‐damage precast infill walls with sliding joints for reinforced concrete frame

“…However, the adverse infill‐frame would change the seismic responses of these buildings as reported in damage observations from past earthquakes and laboratory tests 3–5 . The presence of the infill walls on the bare frame might induce unexpected stress distribution and overlarge stiffness appearance of the surrounding frames, while the infill walls may fail prematurely due to their vulnerable nature than the frames 6 …”

“…[3][4][5] The presence of the infill walls on the bare frame might induce unexpected stress distribution and overlarge stiffness appearance of the surrounding frames, while the infill walls may fail prematurely due to their vulnerable nature than the frames. 6 To mitigate the detrimental effect of solid infill walls on the global structural behavior and protect the fragile infill walls during earthquakes, three major approaches for the infill walls are of most interest: local or global strengthening, separation from the bounding frame, and introduction of the sliding mechanism. The first method aims at mitigating the vulnerable nature of the infill wall by the intervention of tongue and groove clay units, 7 textile-reinforced mortar, 8 fiberreinforced polymers, 9 engineered cementitious composites, 10 local inclusion of rebars 11 or hoops, 12 or diagonal precast panels.…”

“…To protect the crumbly infill walls, the subpanels are usually designed to have a higher resistance than the shear strength of the sliding joints. 6 For this purpose, low shear strength materials are usually applied in the horizontal sliding joints, such as steel plate, 15 corrugated steel sheet, 26 extruded elastomer, 27 wooden plank, 28 high damping rubber, 29 and modified asphalt waterproof. 30 Similarly, wooden planks with or without shear key, 31,32 multiple slit devices, 33 friction-based devices, 34 steel tee energy absorbers, 35 steel cushions, 36 and mobile guide rail 37 are some optional choices to form the sliding joints for the vertical subpanels.…”

“…Parallelly, the third solution is to weaken the stiffness of the entire infill by partitioning the infill wall into several vertical or horizontal subpanels and then constructing sliding joints between each adjacent subpanel. To protect the crumbly infill walls, the subpanels are usually designed to have a higher resistance than the shear strength of the sliding joints 6 . For this purpose, low shear strength materials are usually applied in the horizontal sliding joints, such as steel plate, 15 corrugated steel sheet, 26 extruded elastomer, 27 wooden plank, 28 high damping rubber, 29 and modified asphalt waterproof 30 .…”

Influence of Different Interface Materials and Openings in Infill of Reinforced Concrete Infilled Frames

“…Jurko studied single-bay RC frames with various masonry infill materials and found that composite frame wall structures had higher stiffness, damping, and initial strength than bare frame structures [8]. Chao suggested two unique infilled pre-fabricated damping wall panels for semi-rigid steel frames and conducted an experiment to investigate their seismic reactions [9]. The behaviour and effects of infilled walls have been widely recognised by multiple studies over the past few decades.…”