Seismic Performance and Retrofit Evaluation of Reinforced Concrete Structures
Publication: Journal of Structural Engineering
Volume 123, Issue 1
Abstract
A procedure for evaluating the seismic performance and retrofit of existing low-to-midrise reinforced concrete (RC) buildings is proposed. The procedure is derived from the well-known capacity spectrum method and is intended to provide practicing engineers with a methodology for estimating the margin of safety against structural failure. A series of seismic story demand curves is established from modal superposition analyses wherein changes in the dynamic characteristics of the structure at various response phases ranging from elastic to full failure mechanism are considered. These demands are compared to the lateral story capacities as determined from an independent inelastic pushover analysis. The distribution of lateral forces used in the progressive pushover analysis is based on stiffness dependent incremental story shear demands and forms a critical aspect of the methodology. The proposed technique is applied to a one-third scale model, three-story reinforced concrete frame building that was subjected to repeated shaking table excitations, and that was later retrofitted and tested again at the same intensities. This study indicates that the procedure can provide reliable estimates of story demands versus capacities for use in seismic performance and retrofit evaluation of structures.
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References
1.
Bracci, J. M., Reinhorn, A. M., and Mander, J. B.(1995a). “Seismic resistance of reinforced concrete frame structures designed for gravity loads: performance of structural system.”ACI Struct. J., 92(5), 597–609.
2.
Bracci, J. M., Reinhorn, A. M., and Mander, J. B.(1995b). “Seismic retrofit of reinforced concrete buildings designed for gravity loads: performance of structural model.”ACI Struct. J., 92(6), 711–723.
3.
“Building code requirements for reinforced concrete (revised).” (1992). ACI Committee 318-89, American Concrete Institute, Detroit.
4.
Clough, R. W., and Penzien, J. (1993). Dynamics of Structures, 2nd Ed., McGraw-Hill, Inc., New York, N.Y.
5.
Deierlein, G. C., and Hsieh, S.-H.(1990). “Seismic response of steel frames with semirigid connections using the capacity spectrum method.”Proc., 4th U.S. Nat. Conf. on Earthquake Engrg., 2, 863–872.
6.
Freeman, S. A. (1978). “Prediction of response of concrete buildings to severe earthquake motion.”Douglas McHenry Int. Symp. on Concrete and Concrete Struct., ACI SP-55, American Concrete Institute, Detroit, 589–605.
7.
Freeman, S. A. (1987). “Code designed steel frame performance characteristics.”Dyn. of Struct. Proc., Struct. Congr. '87, Struct. Div., ASCE, New York, N.Y., 383–396.
8.
“An investigation of the correlation between earthquake ground motion and building performance.” (1982). ATC-10, Applied Technology Council, Redwood City, Calif.
9.
Kunnath, S. K., Reinhorn, A. M., and Lobo, R. F. (1992). “IDARC version 3.0—a program for inelastic damage analysis of reinforced concrete structures.”Tech. Rep. NCEER-92-0022, Nat. Ctr. for Earthquake Engrg. Res., State Univ. of New York at Buffalo.
10.
Mahaney, J. A., Paret, T. F., Kehoe, B. E., and Freeman, S. A.(1993). “The capacity spectrum method for evaluating structural response during the Loma Prieta earthquake.”Proc., 1993 Nat. Earthquake Conf., Central U.S. Earthquake Consortium, Memphis, Tenn., 2, 501–510.
11.
Moazzami, S., and Bertero, V. V. (1987). “Three-dimensional inelastic analysis of reinforced concrete frame-wall structures.”Rep. UCB/EERC/87/05, Univ. of California, Berkeley.
12.
Seismic design guidelines for essential buildings. (1986). Tech. Manual, Army TM 5-809-10-1, Departments of the Army, Navy, and Air Force, Washington, D.C.
13.
Uniform building code. (1991). International Conference of Building Officials, Whittier, Calif.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 123 • Issue 1 • January 1997
Pages: 3 - 10
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jan 1, 1997
Published in print: Jan 1997
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