Seismic Design Spectra for Friction‐Damped Structures

Filiatrault, André; Cherry, Sheldon

doi:10.1061/(asce)0733-9445(1990)116:5(1334)

Cited by 125 publications

(68 citation statements)

References 8 publications

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“…The role of this equation in the design process has been developed by a number of researchers (Uang, 1988, Filiatrault, 1990a. The goal is to increase so that, for a given , the elastic strain energy in the structure is minimized.…”

Section: Introductionmentioning

confidence: 99%

Testing of Passive Energy Dissipation Systems

et al. 1993

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Over the period 1986 to 1991, seven different passive energy dissipation systems were studied in experimental research programs at the Earthquake Engineering Research Center of the University of California at Berkeley. This paper presents an overview of these studies, describing the different types of devices, the results of the shake table experiments, and associated analytical work. Four of the systems studied are friction systems, and of these, three (Sumitomo, Pall, and Friction-Slip) are based on Coulomb friction. The fourth is the FluorDaniel Energy Dissipating Restraint, which is a device capable of providing selfcentering friction resistance that is proportional to displacement. The three other systems all have different energy dissipation mechanisms: ADAS elements, which utilize the yielding of mild-steel X-plates; viscoelastic shear dampers using a 3M acrylic copolymer as the dissipative element; and Nickel-Titanium alloy shapememory devices that take advantage of reversible, stress-induced phase changes in the alloy to dissipate energy. The effectiveness of the various systems is evaluated by comparing the response of the test structures without and with the energy dissipators. In some cases, where devices were studied using the same test structure, they are compared directly. All of the systems investigated exhibited characteristics beneficial to improved structural response to earthquake loading.

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Section: Introductionmentioning

confidence: 99%

Testing of Passive Energy Dissipation Systems

et al. 1993

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“…In fact, as shown in Filiatrault and Cherry (1990), the compressed diagonal brace that buckles does not work until it recovers the previous total displacement. The quadrilateral steel damper can recover part of the axial displacement of the cross brace, due to buckling, thus increasing its energy dissipation capacity.…”

Section: Energy Dissipation Devicesmentioning

confidence: 99%

“…Indeed, they were inspired by the Pall friction dampers, manufactured by Pall Dynamics Ltd., that were tested in 1985 and fi rst applied in a building in 1987 in Canada (Filiatrault and Cherry, 1990). The system consists of an articulated quadrilateral steel mechanism introduced at the intersection of the frame cross-braces located at the roof level (Fig.…”

Section: Energy Dissipation Devicesmentioning

confidence: 99%

Introspection on improper seismic retrofit of Basilica Santa Maria di Collemaggio after 2009 Italian earthquake

Cimellaro

Reinhorn

Stefano

2011

Earthq. Eng. Eng. Vib.

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Abstract:The 2009 L'Aquila, Italy earthquake highlighted the seismic vulnerability of historic masonry building structures due to improper "strengthening" retrofi t work that has been done in the last 50 years. Italian seismic standards recommend the use of traditional reinforcement techniques such as replacing the original wooden roof structure with new reinforced concrete (RC) or steel elements, inserting RC tie-beams in the masonry and new RC fl oors, and using RC jacketing on the shear walls. The L'Aquila earthquake revealed the numerous limitations of these interventions, because they led to increased seismic forces (due to greater additional weight) and to deformation incompatibilities of the incorporated elements with the existing masonry walls. This paper provides a discussion of technical issues pertaining to the seismic retrofi t of the Santa Maria di Collemaggio Basilica and in particular, the limitations of the last (2000) retrofi t intervention. Considerable damage was caused to the church because of questionable actions and incorrect and improper technical choices.

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“…(15) in the design process has been developed by a number of researchers [4,7,21,24]. The goal is to increase E H so that, for a fixed E ′ I , the elastic strain energy in the structure becomes minimized.…”

Section: Derivation Of "Relative" Energy Equationmentioning

confidence: 99%

Analysis of the steel braced frames equipped with ADAS devices under the far field records

Bayat

2011

Lat. Am. j. solids struct.

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The usefulness of supplementary energy dissipation devices is now quite well-known in earthquake structural engineering for reducing the earthquake-induced response of structural systems. The seismic behavior of structures with supplemental ADAS devices is concerned in this study. In this paper, the ratio of the hysteretic energy to input energy is compared in different structural systems. The main purpose of this paper is to evaluate the behavior of structures equipped with yielding dampers (ADAS), located in far fields based on energy concepts. In order to optimize their seismic behavior, the codes and solutions are also presented. Three cases including five, ten and fifteen-story three-bay Concentric Braced Frames (CBF) with and without ADAS were selected. The PERFORM 3D.V4 software along with three earthquake records (Northridge, Imperial Valley and Tabas) is used for nonlinear time history analysis and the conclusions are drawn upon energy criterion. The effect of PGA variation and height of the frames are also considered in the study. Finally, to increase the energy damping ability and reduce the destructive effects in structures on an earthquake event, so that a great amount of induced energy is damped and destruction of the structure is prevented as much as possible by using ADAS dampers.

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Seismic Design Spectra for Friction‐Damped Structures

Cited by 125 publications

References 8 publications

Testing of Passive Energy Dissipation Systems

Testing of Passive Energy Dissipation Systems

Introspection on improper seismic retrofit of Basilica Santa Maria di Collemaggio after 2009 Italian earthquake

Analysis of the steel braced frames equipped with ADAS devices under the far field records

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