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Mechanical Amplification of Relative Movements in Damped Outriggers for Wind and Seismic Response Mitigation
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 Title & Authors
Mechanical Amplification of Relative Movements in Damped Outriggers for Wind and Seismic Response Mitigation
Mathias, Neville; Ranaudo, Francesco; Sarkisian, Mark;
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The concept of introducing viscous damping devices between outriggers and perimeter columns in tall buildings to provide supplementary damping and improve performance, reduce structural costs, and increase available usable area was developed and implemented by Smith and Willford (2007). It was recognized that the relative vertical movement that would occur between the ends of outriggers and columns, if they were not connected, could be used to generate damping. The movements, and correspondingly damping, can potentially be significantly increased by amplifying them using simple "mechanisms". The mechanisms also make it possible to increase the number of available dampers and thus further increase supplementary damping. The feasibility of mechanisms to amplify supplementary damping and enhance structural performance of tall, slender buildings is studied with particular focus on its efficacy in improving structural performance in wind loads.
Viscous damping;Outriggers;Tall slender buildings;Perceptible acceleration mitigation;
 Cited by
Boggs, D. and Dragovich, J. (2006). The nature of wind loads and dynamic response. American Concrete Institute. Special Publication, 15-44.

Buchholdt, H. A. (1997). Structural Dynamics for Engineers. Trowbridge: Thomas Telford.

Choi, H. S. and Joseph, L. (2012, September). Outrigger system design considerations. International Journal of HighRise Buildings, 237-246.

Choi, H. S., Ho, G., Joseph, L., and Mathias, N. (2012). Outrigger design for High-Rise Buildings. Chicago: CTBUH in conjunction with IIT.

Kareem, A. (1998). Numerical simulation of wind effects: A probabilistic perspective. Journal of Wind Engineering and Industrial Aerodynamics, 1472-1497.

Kwon, D. and Kareem, A. (2006). NatHaz on-line wind simulator (NOWS): simulation of Gaussian multivariate wind fields. NatHaz Modeling Laboratory Report: Univ. of Notre Dame,

McNamara, R., Taylor, D. P., and Duflot, P. (2003). Fluid viscous dampers to reduce wind-induced vibrations in tall buildings. Structural Design of Tall Special Buildings, 145-154.

Rossi, A., Lazzari, M., and Vitaliani, R. (2004). Wind field simulation for structural engineering. International Journal of Numerical Methods in Engineering, 738-763.

Sarkisian, M., Lee, P., Garai, R., and Tsui, A. (2015). Controlling Wind in Tall and Flexible Structures with Viscous Damping Devices. SEAOC Convention. SEAOC.

Shinozuka, M. and Deodatis, G. (1991). Simulation of stochastic processes by spectral representation. Applied Mechanics Reviews, 44(4), 191-204. crossref(new window)

Shinozuka, M. and Jan, C. M. (1972). Digital simulation of random processes and its applications. Journal of Sound and Vibration, 111-128.

Smith, R. J. and Willford, M. R. (2007). The damped outrigger concept for tall buildings. The Structural Design of Tall and Special Buildings, 501-5017.

Tamura, Y. and Kareem, A. (Eds.). (2013). Advanced Structural Wind Engineering. Japan: Springer.