Seismic Design Forces. II: Flexible Nonstructural Components
Publication: Journal of Structural Engineering
Volume 132, Issue 10
Abstract
This paper presents two simplified methods for calculating the seismic force coefficients for flexible nonstructural components in building structures. The methods utilize the dynamic characteristics, expressed in terms of the fundamental periods and damping ratios, of the component and the supporting structure to calculate the force coefficient. The cases with the building period and component period known or unknown are considered. The formulas with less information tend to provide more conservative estimates of the force to cover the worst case situations. The new formulas now include the effect of possible resonance with higher modes. The validity of the proposed formulas is verified by a comprehensive numerical study of several buildings of different fundamental periods.
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Acknowledgments
This work is sponsored by Multidisciplinary Center for Earthquake Engineering Research (MCEER) at the State University of New York, Buffalo, through a grant with the National Science Foundation.NSF This support is gratefully acknowledged. Discussions and encouragement by T. T. Soong of the State University of New York, Buffalo, when he was the group leader of this project at MCEER, are greatly appreciated. The technical assistance provided by Saurabh S. Bisht and Rildova in the preparation of this paper is also appreciated.
References
ASCE. (2003). “Minimum design loads for buildings and other structures.” SEI/ASCE 7-02, Reston, Va.
Building Seismic Safety Council (BSSC). (2003). NEHRP recommended provisions for the development of seismic regulations for new buildings, 2003 Ed., Parts 1 and 2, FEMA 450, Federal Emergency Management Agency, Washington, D.C.
Department of Navy, Army, and Air Force. (1992). Tri-Services manual: Seismic design of buildings, Navy NAVFAC-355, Army TM5-809-10, Air Force AFM 88-3, Chap. 13, Washington, D.C.
Gupta, A. K., and Jaw, J. W. (1986). “A new instructure response spectrum (IRS) method for multiple connected secondary system with coupling effects.” Nucl. Eng. Des., 96(1), 63–80.
Igusa, T., and Der Kiureghian, A. (1985). “Generation of floor response spectra including oscillator–structure interaction.” Earthquake Eng. Struct. Dyn., 13(5), 661–676.
International Code Council (ICC). (2003). International building code, Whittier, Calif.
Miranda, E., and Taghavi, S. (2005). “Approximate floor acceleration demands in multistory buildings. I: Formulation.” J. Struct. Eng., 131(2), 203–211.
Naeim, F. (1997). “Performance of extensively instrumented buildings during the January 17, 1994 Northridge Earthquake—An interactive information system.” Technical Rep., John A. Martin & Associates, Los Angeles.
Sewell, R. T., Cornell, C. A., Toro, G. R., and McGuire, R. K. (1986). “A study of factors influencing floor response spectra in nonlinear multidegree-of-freedom structure.” Rep. No. 82, The John A. Blume Earthquake Engineering Center, Stanford Univ., Stanford, Calif.
Singh, M. P. (1975). “Generation of seismic floor spectra.” J. Eng. Mech. Div., Am. Soc. Civ. Eng., 101(EM5), 593–607.
Singh, M. P. (1980). “Seismic design input for secondary systems.” J. Struct. Div. ASCE, 106(ST2), 505–517.
Singh, M. P., Moreschi, L. M., Suarez, L. E., and Matheu, E. E. (2005). “Seismic design forces. I: Rigid nonstructural components.” J. Struct. Eng., 132(10), 1524–1532.
Singh, M. P., Suarez, L. E., Matheu, E. E., and Maldonado, G. O. (1993). “Simplified procedures for seismic design of nonstructural components and assessment of current code provisions.” Technical Rep. No. NCEER-93-0013, National Center for Earthquake Engineering Research, State Univ. of New York, Buffalo, N.Y.
Soong, T. T., Chen, G., Wu, Z., Zhang, R. H., and Grigoriu, M. (1993). “Assessment of the 1991 NEHRP provisions for nonstructural components and recommended revisions.” Technical Rep. No. NCEER-93-0003, National Center for Earthquake Engineering Research, State Univ. of New York, Buffalo, N.Y.
Villaverde, R. (1986). “Simplified seismic analysis of secondary systems.” J. Struct. Eng., 112(3), 588–604.
Villaverde, R. (1991). “Approximate formulas to calculate the seismic response of light attachments to buildings.” Nucl. Eng. Des., 128(3), 349–368.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 10 • October 2006
Pages: 1533 - 1542
Copyright
© 2006 ASCE.
History
Received: May 12, 2005
Accepted: Dec 5, 2005
Published online: Oct 1, 2006
Published in print: Oct 2006
Notes
Note. Associate Editor: Reginald DesRoches
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