Energy Dissipation Systems for Seismic Applications: Current Practice and Recent Developments

Symans, Michael D.; Charney, Finley A.; Whittaker, Andrew S.; Constantinou, Michael C.; Kircher, Charles A.; Johnson, Martin; McNamara, Robert

doi:10.1061/(asce)0733-9445(2008)134:1(3)

Cited by 588 publications

(294 citation statements)

References 52 publications

(26 reference statements)

Supporting

Mentioning

245

Contrasting

Unclassified

Order By: Relevance

“…where c d is the damping constant; α is the velocity exponent that usually takes values between 0.15 and 1.0 for seismic applications and characterizes damper nonlinearity; d u  is the velocity across the damper; and sgn is the signum function [13].…”

Section: Simplified Nonlinear Structural Systems With Viscous Dampersmentioning

confidence: 99%

“…Rate-dependent passive dampers (viscous, viscoelastic, elastomeric; referred to herein as passive dampers) have been extensively used in seismic-resistant design and retrofit [13]. Lin and Chopra [14] studied highly damped elastic SDOF systems and showed that supplemental viscous damping is more effective in reducing displacements than total accelerations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems

Karavasilis

Seo

2011

Engineering Structures

105

View full text Add to dashboard Cite

This paper evaluates the seismic structural and non-structural performance of selfcentering and conventional structural systems combined with supplemental viscous dampers. For this purpose, a parametric study on the seismic response of highly damped single-degree-of-freedom systems with self-centering flag-shaped or bilinear elastoplastic hysteresis is conducted. Statistical response results are used to evaluate and quantify the effects of supplemental viscous damping, strength ratio and period of vibration on seismic peak displacements, residual displacements and peak total accelerations. Among other findings, it is shown that decreasing the strength of nonlinear systems effectively decreases total accelerations, while added damping increases total accelerations and generally decreases residual displacements. Interestingly, this work shows that in some instances added damping may result in increased residual displacements of bilinear elastoplastic systems. Simple design cases demonstrate how these findings can be considered when designing highly damped structures to reduce structural and nonstructural damage.

show abstract

Section: Simplified Nonlinear Structural Systems With Viscous Dampersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems

Karavasilis

Seo

2011

Engineering Structures

105

View full text Add to dashboard Cite

show abstract

“…After 1989 Loma Prieta and 1994 Northridge earthquakes, using passive energy dissipation systems for seismic design of structures was developed increasingly [2]. The principle role of a passive energy dissipation system is to reduce the inelastic deformation demands on the framing system of a structure [3]. These systems absorb a significant amount of the input energy from earthquake to the structure.…”

Section: Introductionmentioning

confidence: 99%

“…These dampers improve seismic performance by absorbing earthquake force and reducing structural response. Among these passive energy dissipation systems, FVDs are nowadays extensively used for the seismic design of new structures and seismic rehabilitation of existing structures [3,6]. They can enhance the viscous damping of structures to more than 20-30% of critical damping (in addition to the inherent damping of structures) and decrease stresses and strains caused by the earthquake.…”

Section: Introductionmentioning

confidence: 99%

Collapse Capacity Prediction of Sdof Systems Equipped With Fluid Viscous Dampers

Gharyanpoor¹,

Mohebi²,

Yakhchalian³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

There are various types of passive energy dissipation systems that are used in the seismic design of new structures and the seismic rehabilitation of existing structures. One of the most important kinds of passive energy dissipation systems, which reduce both displacements and accelerations simultaneously, are fluid viscous dampers (FVDs). Using FVDs can reduce the seismic response and improve the performance of structures during earthquake excitations and has a significant effect on the damping of structure. In this paper, Single-Degree-of-Freedom (SDOF) systems with different periods and ductility values, equipped with FVDs, are considered. In order to evaluate the collapse capacity of structures with higher precision, P-Δ effects and strength degradation are taken into account in modeling. Incremental dynamic analysis (IDA) is applied to obtain the collapse capacity of the SDOF systems under far-field ground motion records, and finally the results are investigated. It should be mentioned that the results of this study can be extended to Multi-Degree-of-Freedom (MDOF) structures.

show abstract

“…A classical way to achieve this purpose is by designing ductile structures, as prescribed by seismic codes. Well-established techniques are also based on energy dissipaters inside the structure [1] or isolators at its base [2]. The principal feature of base-isolation techniques is, in fact, that of reducing stiffness, which is expected to reduce earthquake-induced accelerations.…”

Section: Introductionmentioning

confidence: 99%

Plastic disconnection of storey masses for seismic stress control

Porcu¹

2015

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

The paper detects the role of affecting parameters in the performance of a stress control technique based on disconnecting seismic masses during strong earthquakes. Such a technique assumes that rigid-plastic connectors are inserted between structural and non-structural floor masses to detach portions of active mass as soon as a pre-set level of horizontal load is reached. By means of a wide numerical investigation on linear and non-linear single-storey frames acted upon by different strong recorded ground motions, the present paper highlights the ranges within which the governing parameters should be set to make the stress control effective. In view of a practical application of the considered technique, a simple procedure is also provided to derive the stress reduction from the EC8 design response spectrum for given values of the key parameters.

show abstract

Energy Dissipation Systems for Seismic Applications: Current Practice and Recent Developments

Cited by 588 publications

References 52 publications

Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems

Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems

Collapse Capacity Prediction of Sdof Systems Equipped With Fluid Viscous Dampers

Plastic disconnection of storey masses for seismic stress control

Contact Info

Product

Resources

About