Performance Evaluation of Friction Damped Braced Steel Frames under Simulated Earthquake Loads

Filiatrault, André; Cherry, Sheldon

doi:10.1193/1.1585419

Cited by 90 publications

(63 citation statements)

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“…To offset the losses due to creep, it is customary to increase the design slip load by 3% to 5% for the actual friction damper [14]. Furthermore, past research [15] has shown that a change in the slip load up to 20% of the optimum value does not have a significant effect on the building response. This was also evident in the 20-story building study where a 20% change in the optimum slip load (20 kips) would not have a noticeable effect on the peak interstory drift.…”

Section: Creep Effects and Relaxation Of Boltsmentioning

confidence: 99%

Introduction of an Innovative Cladding Panel System for Multi-Story Buildings

Maneetes

Memari

2014

Buildings

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An Energy Dissipating Cladding System has been developed for use in buildings designed based on the concept of damage-controlled structure in seismic design. This innovative cladding panel system is capable of functioning both as a structural brace, as well as a source of energy dissipation, without demanding inelastic action and ductility from the basic lateral force resisting system. The structural systems of many modern buildings typically have large openings to accommodate glazing systems, and a popular type of construction uses spandrel precast cladding panels at each floor level that supports strip window systems. The present study focuses on developing spandrel type precast concrete cladding panels as supplementary energy dissipating devices that are added to the basic structural system. Through a series of analytical studies, the result of evaluating the ability of the proposed Energy Dissipating Cladding system to improve the earthquake resistance of the buildings is presented here.

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Section: Creep Effects and Relaxation Of Boltsmentioning

confidence: 99%

Introduction of an Innovative Cladding Panel System for Multi-Story Buildings

Maneetes

Memari

2014

Buildings

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“…It is possible to improve the energy absorption capacity through the use of the friction damping mechanism of a Pall EDOR. Filiatrault and Cherry [7] analysed the hysteretic behaviour of friction-damped braced frames with Pall EDORs. But in the case of the Filiatrault and Cherry analysis, there was a hypothesis that seemed unconvincing.…”

Section: Characteristics Of Pall Frictional Edorsmentioning

confidence: 99%

“…The most notable feature of the Pall frictional EDOR is the frictional damping mechanism [7]. If the diagonal braces of an ordinary braced frame structure were designed not to buckle in compression, a simple friction joint could be inserted in each diagonal.…”

Section: Characteristics Of Pall Frictional Edorsmentioning

confidence: 99%

“…Based primarily upon the idea of friction in the automotive brake, Pall et al [5] began developing frictional EDORs to improve the seismic response of structures. The X-braced frictional EDORs, developed by Pall and Marsh [6], perform reliably and reduce signiÿcantly the seismic response of structures even if the braces buckle in compression [7]. This paper analyses the characteristics of viscous EDORs and Pall frictional EDORs in detail, then develops a new device for mitigating seismic e ects called pseudo-viscous frictional EDOR (PVEDOR), and ÿnally describes the behaviour of PVEDORs through tests and numerical analysis.…”

Section: Introductionmentioning

confidence: 99%

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The pseudo‐viscous frictional energy dissipator: a new device for mitigating seismic effects

2002

Earthq Engng Struct Dyn

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SUMMARYViscous energy dissipators (EDORs) have good suppressing e ects on acceleration or base shear and they do not add axial pressure to the column when peak moment in the column occurs at peak displacement. Pall frictional EDORs can dissipate energy even when the compression brace buckles due to a special frictional damping mechanism. Retaining the advantages of viscous and Pall EDORs and overcoming their disadvantages, a pseudo-viscous frictional energy dissipator (PVEDOR) is developed. PVEDORs use the frictional damping mechanism of Pall EDORs, but the slip force of PVEDORs is made variable so that the slip force reduces with increasing displacement. Behaviour testing of PVEDORs shows that they possess the important hysteretic feature of viscous EDORs, i.e. the restoring force of PVEDORs are out-of-phase with displacement. Earthquake simulation tests of a 16-storey frame structure incorporating PVEDORs and ordinary steel braces and bare frame are carried out. The test results show that PVEDORs have good vibration-suppressing e ects. An analytical hysteretic model of PVEDORs basically agrees with the behaviour testing results. Finally, the parameter in uence of PVEDORs on suppressive e ectiveness of structural vibration under earthquake conditions is studied. Numerical analyses show that PVEDORs have good control e ects on both seismic displacement and acceleration, and that control e ects of PVEDORs on base shear are much better than Coulomb-type frictional EDORs or metallic EDORs.

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“…-Reported experiments (Tyler 1985, Filiatrault and Cherry 1987, Fitzgerald et al 1989, Anagnostides and Hargreaves 1990, Aiken and Kelly 1990, Richter et al 1990, Whittaker et al 1991, Grigorian et al 1993, Yang and Popov 1995, Wu and Ou 2003, Morgen and Kurama 2004, Ng and Xu 2006, Vial et al 2005, Ricles et al 2006, Zhu et al 2006, Tsai et al 2008, Morgen and Kurama 2008, Iyama et al 2009) do not yield enough information about those questions, as they are mostly oriented to check the global validity of particular devices or assemblies. -The numerical simulation constitutes a challenging issue as the dynamic behavior of friction devices is highly nonlinear, as discussed previously.…”

Section: Fig 2 Hysteresis Loops Of Energy Dissipatorsmentioning

confidence: 99%

Experimental study of friction dissipators for seismic protection of building structures

Almansa

Cruz

Taylor

2011

Earthq. Eng. Eng. Vib.

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This paper presents unidirectional shaking table tests of two reduced scale steel models of building frames; they have one and two floors, respectively. Such frames incorporate friction dissipators at every floor. The inputs are sine-dwells and artificial and registered earthquakes. This work belongs to a larger research project aiming to assess the seismic efficiency of friction dissipators by means of an integrated numerical and experimental approach. Inside this framework, the main objectives of these experiments are: (i) to collect a wide range of results useful to calibrate a numerical model derived inside the project, (ii) to contribute to clarify some of the most controversial issues about friction dissipators (behavior for inputs containing pulses, capacity to cut resonance peaks, introduction of high frequencies in the response, self-generated eccentricities), (iii) to better understand their dynamic behavior, (iv) to give an insight on the feasibility and reliability of using simple friction dissipators for seismic protection of building structures and (v) to characterize the hysteretic behavior of these devices. Most of these objectives are satisfactorily reached and relevant conclusions are stated.

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Performance Evaluation of Friction Damped Braced Steel Frames under Simulated Earthquake Loads

Cited by 90 publications

References 1 publication

Introduction of an Innovative Cladding Panel System for Multi-Story Buildings

Introduction of an Innovative Cladding Panel System for Multi-Story Buildings

The pseudo‐viscous frictional energy dissipator: a new device for mitigating seismic effects

Experimental study of friction dissipators for seismic protection of building structures

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