Seismic response of grid tubular-double steel plate concrete composite shear walls and combined system subjected to low reversed cyclic loading. (1st April 2022)

• Record Type: Journal Article
• Authors: Ge, Wenjie; Zhang, Zhiwen; Xu, Wenping; Ashour, Ashraf; Jiang, Hongbo; Sun, Chuanzhi; Song, Shoutan; Cao, Dafu
• Is Part Of: Engineering structures. Volume 256(2022)
• Publication Date: 2022-04-01
• Subjects: Grid tubular-double steel plate concrete composite shear wall -- Seismic behavior -- Failure mode -- Bearing capacity -- Ductility; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2022.114028
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: An innovative Grid-type Double Steel Plate (GDSP) concrete composite shear wall is proposed. Seismic behavior of GDSP concrete composite shear walls is investigated and compared with conventional reinforced concrete shear wall. Coordinately working effect of GDSP concrete composite shear wall and concrete-filled steel tube (CFST) frame is experimental studied. Abstract: In order to improve the efficiency of the structural lateral resistance system, a new type of Grid tubular-Double Steel Plate (GDSP) concrete composite shear walls is proposed and investigated in this paper. Six test specimens, namely one reinforced concrete (RC) shear wall, three GDSP concrete composite shear walls, one concrete-filled steel tube (CFST) frame, one CFST frame and GDSP concrete composite shear wall combined system were physically tested to failure. The seismic performance of the six test specimens, including hysteresis behavior, ductility, energy dissipation, degradation of stiffness and strength, are recorded and compared. The results show that the GDSP concrete composite shear walls exhibited typical bending failure under low reversed cycle loading, achieving good seismic performance with full hysteresis curve, high bearing capacity, excellent ductility, slow degradation of stiffness and bearing capacity. Under the same axial compression ratio, the yield load of GDSP concrete composite shear wall was about 2.73 times, whilst the peak load was 3.23 times, respectively, of those of RC shear wall. On the other hand, the peak displacement of GDSP concrete composite shear wall was 5 times while ultimate displacement was 3.86 times, respectively, of those of RC shear wall. For GDSP concrete composite shear walls, with the increase of axial compression ratio, the peak load of the new types of concrete composite shear wall increases, but the ductility decreases, gradually. The CFST frame and GDSP concrete composite shear wall can work together co-ordinately. The hysteretic curve of the combined system is fuller, the ductility is improved, the degradation of stiffness and strength are slow when compared with GDSP concrete composite shear wall. Under reversed cyclic loading, the GDSP concrete composite shear wall exhibits low stiffness degradation characteristics and excellent fatigue resistance.