Seismic Response Evaluation of Posttensioned Precast Concrete Frames with Friction Dampers

Morgen, Brian G.; Kurama, Yahya C.

doi:10.1061/(asce)0733-9445(2008)134:1(132)

Cited by 81 publications

(30 citation statements)

References 10 publications

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“…Clark et al (1973) presented test results for a static load control FD intended to limit the effect of differential settlement that occurs at foundations. 13 Other researchers used FDs for energy dissipation in various types of earthquake-resistant structures (ie bridge structures, 14 precast concrete structures, [15][16][17][18][19] steel braced frames, 20-30 steel moment resisting frames, 31 self-centering moment resisting frames, [32][33][34][35][36][37] and rocking timber shear walls 38 ). Friction dampers [39][40][41][42][43] and self-centering braces with friction-based energy dissipation [44][45][46][47] have been developed and tested.…”

Section: Friction Devicementioning

confidence: 99%

Experimental study of deformable connection consisting of friction device and rubber bearings to connect floor system to lateral force resisting system

Tsampras¹,

Sause

Fleischman

et al. 2017

Earthq Engng Struct Dyn

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Summary This paper presents experimental and numerical studies of a full‐scale deformable connection used to connect the floor system of the flexible gravity load resisting system to the stiff lateral force resisting system (LFRS) of an earthquake‐resistant building. The purpose of the deformable connection is to limit the earthquake‐induced horizontal inertia force transferred from the floor system to the LFRS and thereby to reduce the horizontal floor accelerations and the forces in the LFRS. The deformable connection that was studied consists of a friction device (FD) and carbon fiber‐reinforced laminated low‐damping rubber bearings (RB), denoted as the FD + RB connection. The test results show that the force‐deformation responses of the FD + RB connection are stable under quasi‐static sinusoidal and earthquake loading histories and dynamic sinusoidal loading histories. The FD + RB connection force‐deformation response is approximated with a bilinear elastic‐plastic force‐deformation response with kinematic hardening. The FD is axially stiff, compact, easy‐to‐assemble, and able to accommodate the FD + RB connection kinematic requirements. The FD elastic stiffness controls the FD + RB connection elastic stiffness. The FD friction force controls the force when the FD + RB connection force‐deformation response transitions from elastic to post elastic. The RB provide predictable and reliable post‐elastic stiffness to the FD + RB connection. The machining tolerances for the FD components, the “break‐in” effect, the sliding history, and the dwell time affect the FD friction force. Numerical simulation results for a 12‐story reinforced concrete wall building with FD + RB connections under seismic loading show that a reduction of the FD friction force increases the FD + RB connection deformation demand.

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Section: Friction Devicementioning

confidence: 99%

Experimental study of deformable connection consisting of friction device and rubber bearings to connect floor system to lateral force resisting system

Tsampras¹,

Sause

Fleischman

et al. 2017

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…The effectiveness of the friction dampers has been verified by many researchers. Morgen and Kurama (2008) carried out a seismic response evaluation tests of unbonded posttensioned precast concrete moment frames with friction dampers at selected beam ends. Mualla et al (2010) developed a rotational friction damper which can produce maximum friction force as high as 5000 kN (Table 2).…”

Section: Addition Of Rotational Friction Dampersmentioning

confidence: 99%

Seismic Capacity Design and Retrofit of Reinforced Concrete Staggered Wall Structures

Kim

Choi²

2017

Int J Concr Struct Mater

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This study investigates the seismic performance of a staggered wall structure designed with conventional strength based design, and compares it with the performance of the structure designed by capacity design procedure which ensures strong column-weak beam concept. Then the seismic reinforcement schemes such as addition of interior columns or insertion of rotational friction dampers at the ends of connecting beams are validated by comparing their seismic performances with those of the standard model structure. Fragility analysis shows that the probability to reach the dynamic instability is highest in the strength designed structure and is lowest in the structure with friction dampers. It is also observed that, at least for the specific model structures considered in this study, R factor of 5.0 can be used in the seismic design of staggered wall structures with proposed retrofit schemes, while R factor of 3.0 may be reasonable for standard staggered wall structures.

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“…Energy dissipation is supplied at the beam-to-column joint through a variety of mechanisms such as unbonded mild reinforcing steel [64], friction damping elements [79] and other devices.…”

Section: Concrete Self-centering Moment Resisting Framesmentioning

confidence: 99%

Self-Centering Seismic Lateral Force Resisting Systems: High Performance Structures for the City of Tomorrow

et al. 2014

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Abstract:Structures designed in accordance with even the most modern buildings codes are expected to sustain damage during a severe earthquake; however; these structures are expected to protect the lives of the occupants. Damage to the structure can require expensive repairs; significant business downtime; and in some cases building demolition. If damage occurs to many structures within a city or region; the regional and national economy may be severely disrupted. To address these shortcomings with current seismic lateral force resisting systems and to work towards more resilient; sustainable cities; a new class of seismic lateral force resisting systems that sustains little or no damage under severe earthquakes has been developed. These new seismic lateral force resisting systems reduce or prevent structural damage to nonreplaceable structural elements by softening the structural response elastically through gap opening mechanisms. To dissipate seismic energy; friction elements or replaceable yielding energy dissipation elements are also included. Post-tensioning is often used as a part of these systems to return the structure to a plumb; upright position (self-center) after the earthquake has passed. This paper summarizes the state-of-the art for self-centering seismic lateral force resisting systems and outlines current research challenges for these systems. OPEN ACCESSBuildings 2014, 4 521

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Seismic Response Evaluation of Posttensioned Precast Concrete Frames with Friction Dampers

Cited by 81 publications

References 10 publications

Experimental study of deformable connection consisting of friction device and rubber bearings to connect floor system to lateral force resisting system

Experimental study of deformable connection consisting of friction device and rubber bearings to connect floor system to lateral force resisting system

Seismic Capacity Design and Retrofit of Reinforced Concrete Staggered Wall Structures

Self-Centering Seismic Lateral Force Resisting Systems: High Performance Structures for the City of Tomorrow

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