Seismic Response of RC Frames with Steel Braces
Publication: Journal of Structural Engineering
Volume 111, Issue 10
Abstract
Steel bracing members are widely used in steel structures to reduce lateral displacements and dissipate energy during strong ground motions. This concept is extended to concrete frames Inelastic seismic response of reinforced concrete frames with K and X steel bracing patterns is presented. A two bay six story frame designed by limit state design procedure was subjected to 1.25 times the North‐South component of the 1940 El Centro earthquake and the artificially generated B1 earthquake. Takeda's bilinear hysteresis model was assumed for girders, an elastoplastic model was assumed for columns with axial force effects included, and a multilinear buckling model was assumed for steel bracing members. It is concluded that the inelastic response of both the K and X braced frames are satisfactory under the modified El Centro earthquake The response of X braced frame is much better compared to that of the K braced frame under the modified B1 earthquake. It is also noticed that there is a considerable increase in the column axial forces due to the presence of bracing members, which is typical of braced frames.
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References
1.
Code of Practice for Plain and Reinforced Concrete, IS: 456‐1978, Indian Standards Institution, New Delhi, India, 1979.
2.
Code of Practice for Criteria for Earthquake Resistant Design of Structures, IS: 1893–1975, Indian Standards Institution, New Delhi, India, 1975.
3.
Goel, S. C., “Inelastic Response of Multistory K Braced Frames Subjected to Strong Earthquakes,” Proceedings, 4th Japan Earthquake Engineering Symposium, Tokyo, Japan, Nov., 1975, pp. 879–886.
4.
Higashi, Y., et al., “Experimental Study on Strengthening R.C. Structure by Adding Shear Wall,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 7, Istanbul, Turkey, 1980, pp. 173–180.
5.
Jain, A. K., “Inelastic Seismic Response of Braced Steel Frames,” Proceedings, 6th Japan Earthquake Engineering Symposium, Tokyo, Japan, Dec., 1982, pp. 1073–1080.
6.
Jain, A. K., and Goel, S. C., “Seismic Response of Eccentrically Braced Frame,” Journal of the Structural Division, ASCE, Vol. 106, No. ST4, Apr., 1980, pp. 843–860.
7.
Jain, A. K., and Goel, S. C., “Designing Multistorey Braced Steel Frames for Earthquakes,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 4, Istanbul, Turkey, 1980, pp. 9–16.
8.
Jain, A. K., and Goel, S. C., User's Guide for DRAIN‐2D: EL9 and EL10, Department of Civil Engineering, University of Michigan, Ann Arbor, Mich., Dec., 1978.
9.
Jain, A. K., “Hysteresis Behaviour of Bracing Members and Seismic Response of Braced Frames with Different Proportions,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in 1978, in partial fufillment of the requirements for the degree of Doctor of Philosophy.
10.
Jennings, P. C., Housner, G. W., and Tsai, N. C., Simulated Earthquake Motions, E.E.R.L., California Institute of Technology, Pasadena, Calif., Apr., 1968.
11.
Kanaan, A. E., and Powell, G. H., General Purpose Computer Program for Inelastic Dynamic Response of Plane Structures (DRAIN‐2D), University of California, Berkeley, Calif., Apr., 1973.
12.
Kapur, V., and Jain, A. K., “Seismic Response of R.C. Braced Frames,” Indian Concrete Journal, Vol. 56, No. 9, Sept., 1982, pp. 242–252.
13.
Kapur, V., and Jain, A. K., “Seismic Response of Shear Wall Frames versus Braced Concrete Frames,” Indian Concrete Journal, Vol. 57, No. 4, Apr., 1983, pp. 107–114.
14.
Kawamata, S., and Ohnuma, M., “Strengthening Effect of Eccentric Steel Braces to Existing R.C. Frames,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 4, Istanbul, Turkey, 1980, pp. 513–520.
15.
Matthewson, C. D., and Davey, R. A., “Precast Concrete Braced Frames Incorporating Load Limiting Energy Dissipating Devices in an Earthquake Resistant Building,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 7, Istanbul, Turkey, 1980, pp. 349–356.
16.
Mizuhata, K., et al., “Earthquake Response Analysis of Several Kinds of Structures with Realistic Restoring Force Characteristics,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 7, Istanbul, Turkey, 1980, pp. 545–552.
17.
Roeder, C. W., and Popov, E. P., “Eccentrically Braced Steel Frames for Earthquakes,” Journal of the Structural Division, ASCE, Vol. 104, No. ST3, Mar., 1978, pp. 391–412.
18.
Shimazu, T., and Fukuhara, Y., “Experimental Study on R.C. Truss Frames as Earthquake Resistance Elements,” Proceedings, 6th World Conference on Earthquake Engineering, Vol. 11, New Delhi, India, Jan., 1977, pp. 31–36.
19.
Sonobe, Y., et al., “Behaviour of Braced R.C. Frames Subjected to Cyclic Lateral Loads,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 6, Istanbul, Turkey, 1980, pp. 553–556.
20.
Sugano, S., and Fujimura, M., “Seismic Strengthening of Existing R.C. Buildings,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 4, Istanbul, Turkey, 1980, pp. 449–456.
21.
Uniform Building Code, International Conference of Building Officials, Whittier, Calif., 1976.
22.
Valle, E. D., “Some Lessons from the March 14, 1979 Earthquake in Mexico City,” Proceedings, 7th World Conference on Earthquake Engineering, Vol. 4, Istanbul, Turkey, 1980, pp. 545–552.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 111 • Issue 10 • October 1985
Pages: 2138 - 2148
Copyright
Copyright © 1985 ASCE.
History
Published online: Oct 1, 1985
Published in print: Oct 1985
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