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HF2V dissipator effects on the performance of a 3 story moment frame by Tobias Bacht; J. Geoffrey Chase; Gregory MacRae; Geoffrey W. Rodgers; Timon Rabczuk; Rajesh P. Dhakal; Jonathan Desombre is a Engineering article available to read on EtoBox.

What is HF2V dissipator effects on the performance of a 3 story moment frame about?

In this paper, the seismic performance of the as-designed SAC Los Angeles 3 story seismic frame with rigid moment connections at the beam ends is compared with that of the same frame using semirigid connections with high force-to-volume (HF2V) lead dissipators. The presence of the gravity frames in the model is also considered. It was found that the placement of dissipators, ignoring the effect of the gravity frames, caused a 12% increase in period of the frame due to the decreased stiffness of the connections. During design level ground shaking the semi-rigid connections with HF2V dissipators have slightly lower accelerations, up to an 80% increase in peak drift, and a 200% increase in the permanent displacement compared to the as-designed case, but no structural damage is expected. When the gravity frames are considered, the floor accelerations decrease further, the peak displacements do not significantly change, but the residual story dirft ratios reduce to approximately 0.17%. This result is less than one half that of the as-designed frame, where typically gravity frame effects are not considered. The realistic analyses combining HF2V lead dissipators with gravity frames and we

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Author

Tobias Bacht; J. Geoffrey Chase; Gregory MacRae; Geoffrey W. Rodgers; Timon Rabczuk; Rajesh P. Dhakal; Jonathan Desombre

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0143-974X)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)