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Seismic Behavior of an Innovative Four-Layer Steel Shear Wall

  • Structural Engineering
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KSCE Journal of Civil Engineering Aims and scope

Abstract

The steel shear wall has been introduced as a system with high stiffness and strength and a considerable capability in absorbing seismic energy. Due to its special advantages compared to other lateral load-resistant systems, this system is being used in tall buildings more and more frequently. Ductility and energy absorption are important parameters to be considered when choosing a robust lateral load-resistant system. By increasing the ductility and energy absorption of the structures, their seismic performance and safety are improved. Ideally, a structural system should provide both ductility and energy absorption in an economic way. This study presents the numerical simulation of the seismic behavior of a recently developed four-layer steel shear wall composed of corrugated and flat sheets. The simulations were performed using finite element software ABAQUS. Nonlinear static analysis was used to derive seismic parameters. The results showed that the corrugated sheets surrounded by flat sheets provide greater seismic parameters such as ductility and over-strength compared to double corrugated walls. According to the results, the calculated R-factor, displacement amplification factor, and the overstrength factor of the proposed wall were 4.58, 8.21, and 1.26, respectively. Furthermore, to use the seismic parameters of the shear wall, some relationships have been presented for incremental strength and stiffness coefficients without the need for finite element modeling. Compared to the finite element results, the presented relations had good accuracy.

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Abbreviations

a :

Amplitude of corrugation

b :

Width of the steel shear wall plate(SPSW)

d :

Height of the SPSW

d 0, d 1, d 2, d 3 :

Dimensions of the corrugation

D x, D y, H :

Rigidity constants of the SPSW (N·mm)

E :

Young’s modulus of steel material

E d :

Disapiated energy

E s :

Elastic energy

F max :

Maximum base shear force per cycle

F min :

Minimum base shear force per cycle

F fu :

Shear capacity or ultimate shear force

F u :

Ultimate stress of steel material

F wu :

Shear force corresponding to the yield point

F y :

Yield stress of steel material

G :

Shear modulus (N/mm2)

h :

Height of the shear wall

I c :

Moment of inertia of the column

K v :

Shear elastic buckling coefficient of the SPSW

M P :

Plastic moment of the column

q :

Arc-length of the corrugation

R u :

R-factor

R μ :

Response modification factor of structure (μ2)

t :

Thickness of the corrugated plate

U fe :

Displacement corresponding to the yelding of frame

U we :

Displacement corresponding to the yield point

V s :

Shear force first element reached plastic limit

V y :

Elastic shear force

Vy :

Yield shear load of the corrugated plates

δ nax :

Maximum displacment per cycle

δ min :

Minimum displacment per cycle

Δm :

Maximum displacement applied to the structure.

Δs :

Displacement first element reached plastic limit

Δy :

Elastic displacement

λ :

Wavelength of the corrugation

θ :

Angle of tensile stress diagonal field

σ t :

Tensile stress of the plate

υ :

Poisson’s ratio of steel material

Ωn :

Over strength ratio

ξ :

Damping ratio

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Correspondence to Vahid Broujerdian.

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Abbaszadeh, A., Ghamari, A. & Broujerdian, V. Seismic Behavior of an Innovative Four-Layer Steel Shear Wall. KSCE J Civ Eng 27, 4770–4786 (2023). https://doi.org/10.1007/s12205-023-1419-8

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  • DOI: https://doi.org/10.1007/s12205-023-1419-8

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