Analytical Model for Viscous Wall Dampers

Hejazi, Farzad; Shoaei, M. Dalili; Tousi, Abolghasem M.; Jaafar, Mohd Saleh

doi:10.1111/mice.12161

Cited by 27 publications

(6 citation statements)

References 52 publications

(52 reference statements)

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“…In Table 2, Model 1 (M1) represents the experimental results [10]. Model 2 (M2) represents the numerical results [11], and Model 3 (M3) denoted the results of this study. The accuracy ratio was above 91%.…”

Section: Validation Displacement Results Of Three-storey and Six-stormentioning

confidence: 99%

“…6). The analysis results of the three-storey building were validated with experimental [10] and numerical [11] results to verify the results of the other models. ICCSTE 197-5…”

Section: Modelling Structural Buildingsmentioning

confidence: 97%

“…The structural modelling of buildings was conducted in two stages and included four models of RC buildings. The four models followed the dimensions and mechanical properties of the experimental study by Lu et al (2008) [10] and the numerical study by Farzad et al (2015) [11] (see Figs. 2 and 3 and Table 1).…”

Section: Building Dimensions and Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Implementing Viscous Plane Damper to Prevent Pounding Between Adjacent Reinforced Concrete Buildings

Taha¹,

Hejazi²

2019

Proceedings of the 4th International Conference on Civil, Structural and Transportation Engineering (ICCSTE'19)

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The pounding of adjacent building is one of the key issues that occurs during earthquakes, which has caused severe damage in buildings. This paper presents an analysis of using an innovative viscous plane damper in the gap between adjacent reinforced concrete (RC) buildings subjected to seismic loads. For this purpose, parallel RC structures of three and six storeys are considered, and a viscous plane damper is implemented in the gap between the two adjacent structures. The effect of the viscos plane damper on the pounding of the considered adjacent RC structure is studied. The finite element modelling and seismic time history analysis of the buildings were performed using Arcs 3D software to prepare the building model. The maximum displacements in horizontal, transverse, and vertical directions are evaluated. Two stages of analysis were conducted. The first stage analysed three-storey and six-storey buildings independently. The results of the first stage were validated with experimental and numerical results. The second stage was analysed by combining two buildings with different storey heights with and without the viscous plane damper. The results showed an effective reduction in displacement values at around 23.15% horizontally, 35.5% transversely, and 14.0% vertically. Therefore, the innovative damper significantly decreased pounding between RC buildings.

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Section: Validation Displacement Results Of Three-storey and Six-stormentioning

confidence: 99%

“…6). The analysis results of the three-storey building were validated with experimental [10] and numerical [11] results to verify the results of the other models. ICCSTE 197-5…”

Section: Modelling Structural Buildingsmentioning

confidence: 97%

See 1 more Smart Citation

Implementing Viscous Plane Damper to Prevent Pounding Between Adjacent Reinforced Concrete Buildings

Taha¹,

Hejazi²

2019

Proceedings of the 4th International Conference on Civil, Structural and Transportation Engineering (ICCSTE'19)

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“…Hejazi et al [69] proposed a multi-objective optimization technique using GA [70,71] to modify the performance of passive devices in order to reduce the damage response of structural members as well as story displacements. Hejazi et al [72] presented a finite element-based analytical model as well as a constitutive law for viscous wall dampers for RC structures subjected to seismic loading.…”

Section: Pvc In Buildingsmentioning

confidence: 99%

Invited Review: Recent developments in vibration control of building and bridge structures

Ghaedi¹,

Ibrahim²,

Adeli³

et al. 2017

J. vibroeng.

110

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This paper presents a state-of-the-art review of recent articles published on active, passive, semi-active and hybrid vibration control systems for structures under dynamic loadings primarily since 2013. Active control systems include active mass dampers, active tuned mass dampers, distributed mass dampers, and active tendon control. Passive systems include tuned mass dampers (TMD), particle TMD, tuned liquid particle damper, tuned liquid column damper (TLCD), eddy-current TMD, tuned mass generator, tuned-inerter dampers, magnetic negative stiffness device, resetting passive stiffness damper, re-entering shape memory alloy damper, viscous wall dampers, viscoelastic dampers, and friction dampers. Semi-active systems include tuned liquid damper with floating roof, resettable variable stiffness TMD, variable friction dampers, semi-active TMD, magnetorheological dampers, leverage-type stiffness controllable mass damper, semi-active friction tendon. Hybrid systems include shape memory alloys-liquid column damper, shape memory alloy-based damper, and TMD-high damping rubber.

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“…Sasaki et al established the damping force formulas of VWDs in small and large earthquakes based on experimental tests with small and large dynamic vibrations. Hejazi et al developed an analytical model of VWDs for RC‐framed structures. Newell et al assessed the seismic performance of VWDs using experiments and nonlinear response history analysis.…”

Section: Introductionmentioning

confidence: 99%

Development of a divergent fluid wall damper for framed structures subjected to dynamic loads

Nikpour

Hejazi

Jaafar

2017

Struct Control Health Monit

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SummaryThis study developed a new adaptive design for a divergent fluid wall damper (DFWD). This design decreases the dynamic vibration in reinforced concrete (RC) structures subjected to dynamic forces caused by earthquakes, wind, tsunamis, and explosions. The DFWD comprises a tank connected to the lower floor that is filled with a fluid and a plate with fins located inside the tank connected to the upper floor. The DFWD uses a bypass system mechanism that circulates fluid inside the wall damper tank through a divergent pipe and controls the fluid pressure during vibration using a double-acting valve. To evaluate the performance of the DFWD in RC-frame structures, we fabricated and experimentally evaluated a prototype of the device based on a new adjustable design. Two RC frames, a bare frame and a frame with DFWD, were cast with the same geometric specifications. These frames were then examined in terms of the time history of applied displacement with a maximum amplitude of 40 mm under the same conditions. The valves in the design of the DFWD were adjustable, and the fully open valve condition was examined. The results indicated that the failure capacity of the frame was significantly improved compared to that of the bare frame as the DFWD absorbed more dynamic force.The ductility of the RC-frame structure equipped with the DFWD was improved by almost 17.8% compared to that of the bare frame. | INTRODUCTIONDesigning earthquake-resistant buildings is a key challenge for structural engineers. Over the past three decades, studies have been performed to improve the seismic design of structures, and different vibration control technologies have been used to achieve safe and economical designs. Energy dissipation devices have been used extensively as external devices to absorb and release dynamic loads in earthquake engineering.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Analytical Model for Viscous Wall Dampers

Cited by 27 publications

References 52 publications

Implementing Viscous Plane Damper to Prevent Pounding Between Adjacent Reinforced Concrete Buildings

Implementing Viscous Plane Damper to Prevent Pounding Between Adjacent Reinforced Concrete Buildings

Invited Review: Recent developments in vibration control of building and bridge structures

Development of a divergent fluid wall damper for framed structures subjected to dynamic loads

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