Energy dissipation enhancement through multi-toggle brace damper systems for mitigating dynamic responses of structures

Feng, Huan; Zhou, Fangyuan; Ge, Hanbin; Zhu, Hongping; Zhou, Lemu

doi:10.1016/j.istruc.2021.05.068

Cited by 13 publications

(6 citation statements)

References 23 publications

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“…6,7,16 is that the damper was directly installed at the beam–column joint. Since then, the two kinds of TBDS have been extensively studied based on the small deformation solution 18–24 …”

Section: Introductionmentioning

confidence: 99%

“…Since then, the two kinds of TBDS have been extensively studied based on the small deformation solution. [18][19][20][21][22][23][24] However, it is hard to clarify the influence of the geometry parameters of TBDS on the its performance comprehensively based on the small deformation solution. The geometric sensitivity and the amplification capacity are two aspects of the TBDS.…”

Section: Introductionmentioning

confidence: 99%

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Multi‐performance objectives optimum design method and vibration control application of generalized toggle–brace–damper system

Lan

et al. 2022

Earthq Engng Struct Dyn

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The toggle–brace–damper system (TBDS) is an effective displacement amplification damper occupying a large building space. The small deformation solution, which is widely used, cannot describe the feature that the displacement amplification capacity varies with the lateral displacement of the TBDS. This is not conducive to investigate the performance of the TBDS comprehensively. Therefore, the geometric design and optimization of the TBDS are lack of a theoretical basis. A generalized toggle–brace–damper system (GTBDS), a generalized form of TBDS, is proposed. It has a flexible layout and optimizes the space available. We also introduce an amplification factor of displacement increment (AFDI) that can accurately describe the performance of the GTBDS. The amplification capacity and the geometric sensitivity are two aspects of the performance. The influence of geometric parameters on the performance of the GTBDS is clarified based on the AFDI. Some regulations are also proposed to compare the performance of GTBDSs with different geometric constructions. Two geometric parameter optimization methods of the GTBDS are proposed to balance its amplification capacity, operation safety and geometric sensitivity. The relationship between the displacement amplification capacity and the energy dissipation capacity of the GTBDS is examined. The existing modal energy dissipation method (MEDM) is extended to calculate the additional damping ratio (ADR) provided by the GTBDS. Combining the calculation method of ADR and the geometric optimization methods of GTBDS, a multiperformance objectives design method of the GTBDS is proposed. The case analysis verifies the effectiveness and the feasibility of the design method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi‐performance objectives optimum design method and vibration control application of generalized toggle–brace–damper system

Lan

et al. 2022

Earthq Engng Struct Dyn

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“…e TBD allows fluid viscous dampers to function at small displacements of the structure, and the effectiveness of such devices has been verified by experimental and theoretical studies. Several studies on the application of TBDs and the optimization of their form have shown that the application of TBDs can be effective in reducing the vibration response of structures [21][22][23]. Huang [24] summarized various types of displacement amplification mechanisms of elbow-joint supports.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Analysis of a Winding Rope Fluid Viscous Damper

Zhang

et al. 2023

Structural Control and Health Monitoring

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This paper investigated a winding rope fluid viscous damper (WRFVD) that uses the frictional amplification mechanism of a winding rope to obtain the operating characteristics of a viscous damper-like device. The WRFVD combined the advantages of fluid viscous dampers and friction dampers. It not only retained the mechanical characteristics of the fluid viscous damper but also reduced manufacturing costs. First, the construction and working principles of the WRFVD were introduced. A theoretical model that could accurately simulate the hysteretic characteristics of the damper was derived. Then, a series of dynamic tests were performed on six prototypes of the WRFVD. The dynamic performance under different displacement amplitudes and device parameters was analyzed based on the test results. In addition, the theoretical model was validated by experimental results. Finally, a series of parametric analyses of the WRFVD were performed. The experimental results showed that the WRFVD is a type of velocity-dependent damper with smooth and plump hysteretic curves under sinusoidal displacement excitation. Fatigue loading tests showed that the WRFVD had excellent fatigue resistance capacity and stable operational performance. The established theoretical model was reasonable and satisfactorily reproduced the hysteretic properties of the WRFVD. The parametric analyses showed that it was not recommended to improve the performance of the WRFVD by the method of adjusting the damping coefficient and pretightening load. It was reasonable to adjust the performance of the WRFVD by setting a smaller velocity exponent, an appropriate winding turn of winding ropes, and a suitable friction coefficient.

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Section: Introductionmentioning

confidence: 99%

“…In recent years, the energy-dissipating and seismic isolation technics are widely applied in the high severity seismic zones [1] [2] [3] . As illustrated by the facts, the energydissipating and seismic isolation technics can effectively reduce the seismic response of the buildings and therefore improve their earthquake resistance abilities [3] . With the issuance of Shanghai Technical Standard for Energy dissipation, Vibration reduction and Isolation of Buildings (DG/TJ08-2326) in 2020, eight-categorized buildings are designed with stricter requirements; therefore, more focuses are put on the energy dissipating devices, especially on whether the devices are applicable to low-rise buildings [4] [5] .…”

Section: Introductionmentioning

confidence: 99%

Seismic Analysis of Low-Rise Structures with Friction Dampers

Wu,

Li,

Zhou

2023

Advances in Frontier Research on Engineering Structures

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With the issuance of Shanghai Technical Standard for Energy dissipation, Vibration reduction and Isolation of Buildings (DG/TJ08-2326) in 2020, the requirements on structural seismic performance are stricter for eight-categorized important buildings. One category of building is low-rise kindergarten buildings. To illustrate the function of friction damper in low-rise building, 18 friction dampers are applied in a 4-story kindergarten building and nonlinear seismic analysis is performed. The analysis is done with seismic input of small, moderate and large seismic input. The analysis results show that the friction dampers can dissipate significant energy in moderate and large seismic input. With the contribution of friction dampers, the structural response can meet the requirements in Shanghai technical standard.

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Energy dissipation enhancement through multi-toggle brace damper systems for mitigating dynamic responses of structures

Cited by 13 publications

References 23 publications

Multi‐performance objectives optimum design method and vibration control application of generalized toggle–brace–damper system

Multi‐performance objectives optimum design method and vibration control application of generalized toggle–brace–damper system

Theoretical and Experimental Analysis of a Winding Rope Fluid Viscous Damper

Seismic Analysis of Low-Rise Structures with Friction Dampers

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