A Study on Soil-Structure Interaction on Seismic Response of Coupled Steel Plate Shear Wall subjected to Near and Far-Field Earthquakes

Document Type : Research Article

Authors

1 MSc Student in structure Engineering, Faculty of Civil Engineering of Semnan University, Semnan, Iran.

2 Associate Professor, Faculty of Civil Engineering of Semnan University, Semnan, Iran.

Abstract

Coupled steel plate shear wall (C-SPSW) is a relatively new system that has received less attention from research centers. This system benefits from high ductility and stiffness, which are the two advantages that make this system superior to the other lateral load-resisting systems. This paper aims to study the seismic response of the CSPSWs under near and far-field earthquakes, resting on soil types II and IV considering soil-structure interaction (SSI) effects using the 5, 10 and 15-storey frames in which the length of link beams and frame bays is equal to 1.25, 2.5 and 3.75 as well as 2.4, 3.2 and 4.8m, respectively. Based on the analysis results, maximum roof displacement of the 5, 10 and 20-storey frames located on stiff soils (soil type II), does not experience remarkable changes under near and far-field earthquakes but, to the contrary, in the case of soil type IV, changes are considerable. Roof acceleration of the structure located on stiff soil, is less than that of the structure on soft soil. In this paper, the ratio of base shear to the effective weight of the structure was taken into account and it was found that incorporation of SSI effects influences the base shear. Moreover, regarding behavioral modes of the coupling beam and coupling degree of the SPSW, the results indicated that this degree has a meaningful correlation with the fundamental period of the structure and the short coupling beams that yield in shear, have a better performance.  

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References

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Amirkabir Journal of Civil Engineering
Volume 53, Issue 12
March 2022
Pages 5103-5138

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