Investigation of the effects of viscous damping mechanisms on structural characteristics in coupled shear walls

Faridani, Hadi Moghadasi; Curnis, Antonio

doi:10.1016/j.engstruct.2016.02.031

Cited by 12 publications

(2 citation statements)

References 51 publications

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“…In one such study, Lavan (2012) used the continuum method to derive a fourth-order differential equation governing the response of shear walls with viscous dampers by neglecting axial deformation of the walls and by assuming that the entire system can be uncoupled into a system consisting of a stiffness medium and a damping medium. In a more-recent study, Faridani and Capsoni (2016) derived a fourth-order differential equation for the analysis of shear walls coupled using viscous and VE dampers. The solution methods of Lavan (2012) and Faridani and Capsoni (2016) are in general not applicable to tall coupled-wall buildings where axial deformations of the walls play an important role.…”

Section: Introductionmentioning

confidence: 99%

“…In a more-recent study, Faridani and Capsoni (2016) derived a fourth-order differential equation for the analysis of shear walls coupled using viscous and VE dampers. The solution methods of Lavan (2012) and Faridani and Capsoni (2016) are in general not applicable to tall coupled-wall buildings where axial deformations of the walls play an important role. Moreover, the formulations presented in these previous studies do not take into account the effects of the stiffness of the connecting elements as well as that of the slab directly above the damper, which can have significant impact on the damping ratios of tall walls coupled using VE dampers.…”

Section: Introductionmentioning

confidence: 99%

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Analytical Study on the Dynamic Properties of Viscoelastically Coupled Shear Walls in High-Rise Buildings

Pant

Montgomery²,

Christopoulos

2017

J. Eng. Mech.

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An innovative method of using viscoelastic (VE) dampers as coupling members between reinforced concrete shear walls has been recently developed for enhancing the wind performance and seismic resilience of tall buildings. Although three-dimensional finite-element models are used for the final design of such systems, fundamental analytical models that can be used to gain broader insights into their dynamic response have not yet been developed. Therefore, in this paper a sixth-order partial differential equation governing the dynamic properties of tall shear walls coupled using VE dampers is derived by explicitly taking into account the stiffness of the connecting elements as well as that of the slab directly above the dampers. The governing equation is solved numerically using the Taylor series expansion method and the periods and added damping ratios in various modes of vibration are evaluated. It is found that for given frequency independent VE material properties, the added damping ratios of such systems are independent of the mass of the building. Analyses using a commercially available VE damper by taking into account the frequency dependency of the VE material revealed that progressively higher maximum damping ratios are achieved in higher modes of vibration. Based on the conclusions derived through the analytical formulation, recommendations are provided for enhancing the efficiency of VE dampers in tall buildings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical Study on the Dynamic Properties of Viscoelastically Coupled Shear Walls in High-Rise Buildings

Pant

Montgomery²,

Christopoulos

2017

J. Eng. Mech.

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Seismic behavior of coupled shear wall structures with various concrete and steel coupling beams

Pang

Sun

et al. 2017

Structural Design Tall Build

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A novel 2-level yielding steel coupling beam (TYSCB) has been developed to enhance the seismic performance of coupled shear wall systems. The TYSCB consists of a shear-yielding beam designed to yield first under minor earthquakes and a bend-yielding beam designed to yield under severe earthquakes. A comparison of seismic behavior of 4 20-storey coupled shear wall structures with reinforced concrete coupling beams, complete steel coupling beams, fuse steel coupling beams, and TYSCB is presented. The dimensions and force-displacement curves of these coupling beams are first designed. Nonlinear dynamic analyses on these structures are carried out under minor and severe earthquakes. The seismic behavior of these models is studied by comparing their storey shear forces, storey drift ratios and ductility demands. The results show that the base shear and storey drift of the structure with TYSCB under both minor and severe earthquakes are less than those of structures with concrete coupling beams and complete steel coupling beams. Furthermore, the ductility demand of coupled shear walls with TYSCB subjected to severe earthquakes can be greatly released compared with those using fuse steel coupling beams. This indicates that the proposed TYSCB has a better balance between ductility demand and energy dissipation, compared to traditional steel coupling beams. KEYWORDSconcrete coupling beam, coupled shear wall, energy dissipation capacity, seismic behavior, steel coupling beam, two-level yielding steel coupling beam

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Assessment of Multi-storied RC Framed Structure Using Passively Damped Viscous Dampers

Kalamkar

Wani

Jadhao

2019

Smart Technologies for Energy, Environment and Sustainable Development

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Investigation of the effects of viscous damping mechanisms on structural characteristics in coupled shear walls

Cited by 12 publications

References 51 publications

Analytical Study on the Dynamic Properties of Viscoelastically Coupled Shear Walls in High-Rise Buildings

Analytical Study on the Dynamic Properties of Viscoelastically Coupled Shear Walls in High-Rise Buildings

Seismic behavior of coupled shear wall structures with various concrete and steel coupling beams

Assessment of Multi-storied RC Framed Structure Using Passively Damped Viscous Dampers

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