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Journal of Performance of Constructed Facilities / Volume 20 / Issue 1 / TECHNICAL PAPERS

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Pendulum Tuned Mass Dampers for Floor Vibration Control

J. Perform. Constr. Facil. 20, 64 (2006); http://dx.doi.org/10.1061/(ASCE)0887-3828(2006)20:1(64) (10 pages)

Mehdi Setareh, M.ASCE1, John K. Ritchey2, Anthony J. Baxter3, and Thomas M. Murray, F.ASCE4

1Professor, School of Architecture and Design, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.
2Former Graduate Student, Dept. of Civil and Environmental Engineering, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.
3Principal, ESI Engineering, Inc., Minneapolis, MN 55439.
4Montague-Betts Professor of Structural Steel Design, Dept. of Civil and Environmental Engineering, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.

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(Submitted 3 August 2004; accepted 29 March 2005)

This paper presents the results of the analytical and experimental studies of a pendulum tuned mass damper (PTMD) to control excessive floor vibrations due to human movements. The PTMD used in this study acts as a passive tuned mass damper. An equivalent single-degree-of-freedom model for the PTMD is developed and used to derive the equations of motion of the coupled PTMD-floor system. The optimal design parameters of the PTMD are found using an optimization algorithm. Effects of off-tuning of the PTMD due to the variations in the floor mass on its response are investigated. Results of the tuning of the PTMD on a laboratory test floor are presented along with the off-tuning effects. These results indicate that a properly tuned PTMD can significantly reduce the excessive floor vibrations. In addition, when subjected to off-tuning due to variations in the floor live load the PTMD may or may not be able to perform effectively depending on the level of human-structure dynamic interactions. Finally, examples of the PTMD already in use to control excessive floor vibrations are presented.

© 2006 ASCE

Acknowledgments

The research presented in this paper was supported by the National Science Foundation under Grant No. CMS-9978610. This support is gratefully acknowledged. The PTMD was furnished by ESI Engineering, Inc., Minneapolis, Minn. Their support is greatly appreciated.

Article Outline

  1. Introduction
  2. Analytical Modeling and PTMD Optimum Design Parameters
  3. Application of the PTMD on a Laboratory Floor
    1. Details of the PTMD and Test Floor
    2. PTMD Performance
  4. PTMD Off-Tuning
    1. Analytical Study
    2. Experimental Study
  5. Permanent Installations of PTMDs
    1. Office Building—Fifth Floor
    2. Office Building—Second Floor
  6. Summary and Conclusions

KEYWORDS

ASCE SUBJECT HEADINGS

Damping, Floors, Vibration, Serviceability, Steel

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ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1061/(ASCE)0887-3828(2006)20:1(64)

PUBLICATION DATA

ISSN

0887-3828 (print)  
1943-5509 (online)

Publisher

ASCE

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