Seismic Response of Flexibly Supported Coupled Shear Walls
Publication: Journal of Structural Engineering
Volume 122, Issue 10
Abstract
Results from seismic analyses performed on 20-story ductile coupled-shear-wall models designed for Montreal, Canada, are presented. A two-dimensional model was used to idealize the structure including the supporting ground. Allowances were made for nonlinearities not only in the walls and the coupling beams, but also in the soil and foundation elements. The soil foundation was modeled by equivalent massless springs (hangers), located at the base of the structures, allowing for inelastic bearing of the soil and loss of contact (uplift) of base from supporting soil. The stiffnesses of massless foundation springs were obtained using the soil properties that were derived on the basis of strain-dependent shear moduli of real borings. The study showed that the model is capable of tracing the response of coupled shear wall, taking into account the soil-structure interaction effects. Results showed that allowing for foundation flexibility lengthened the fundamental period by a maximum of 33; it amplified deflections by a maximum of 81. However the stresses in the walls and the coupling beams attenuated particularly in lower stories. Finally, no substantial variations were observed in the rotational ductility demands of the coupling beams.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Agrawal, A. B., Jaeger, L. G., and Mufti, A. A.(1981). “Response of RC shear wall under ground motions.”J. Struct. Engrg., ASCE, 107(2), 395–411.
2.
Applied Technology Council (ATC). (1978). “Tentative provisions for the development of seismic regulations for buildings.”ATC-3-06, NBS SP-510, NSF 78-8, Nat. Bureau of Standards, Washington, D.C.
3.
Canadian Standards Association (CSA). (1984). “Design of concrete structures for buildings.”CAN3-A23.3-M84, Rexdale, Ont., Canada.
4.
Chaallal, O.(1992). “Finite element model for coupled shear wall under seismic loadings.”J. Struct. Engrg., ASCE, 118(10), 2936–2943.
5.
Chaallal, O., and Gauthier, D.(1995). “Considérations sismiques des murs de refend ductiles avec oluvertures.”Can. J. Civ. Engrg., Ottawa, Canada, 22, 883–897.
6.
Chahde, J. (1987). “Étude du comportement élastique et du probléme K0 pour les argiles structurées de l'Est du Canada,” PhD thesis, Sherbrooke Univ., Sherbrooke, Canada.
7.
Coull, A.(1971). “Interaction of coupled shear walls with elastic foundations.”J. Am. Concrete Inst., 68(6), 456–461.
8.
Derecho, A. T., and Huckelbridge, A. A. (1991). “Soil-structure interaction—a brief overview.”ACI-SP127-7 on earthquake-resistant concrete structures: inelastic response and design, Am. Concrete Inst. (ACI), Detroit, Mich., 239–259.
9.
Derecho, A. T., Ghosh, S. K., Iqbal, M., and Fintel, M.(1976). “Strength, stiffness and ductility required in RC structural walls for earthquake resistance.”ACI J., 76, 875–896.
10.
Devic, J. P. (1992). “Dommages aux structures et effets de site lors du séisme du saguenay—25 Novembre 1988,” MSc thesis, Sherbrooke Univ., Sherbrooke, Canada.
11.
Filiatrault, A., Anderson, D. L., and DeVall, R. H.(1992). “Effect of weak foundation on the seismic response of core wall type buildings.”Can. J. Civ. Engrg., Ottawa, Canada, 19(3), 530–539.
12.
Fintel, M., and Ghosh, S. K.(1974). “Application of inelastic response history analysis in the aseismic design of a 31-storey frame-wall building.”Earthquake Engrg. and Struct. Dynamics, 2, 325–342.
13.
Ibrahimbegovic, A. (1989). “Dynamic analysis of large linear structure-foundations systems with local nonlinearities.”Rep. No. UCB/SEMM 89/14, Dept. of Civ. Engrg., Univ. of California, Berkeley, Calif.
14.
Kabeyasawa, T., Shioara, H., Otani, S., and Aoyama, H. (1982). “Analysis of the full-scale seven-story reinforced concrete test structure: test PSD3.”Proc., 3rd Joint Tech. Coordinating Committee, U.S.-Japan Cooperative Earthquake Res. Program, Build. Res. Inst., Tsukuba, Japan.
15.
Kabeyasawa, T., Shioara, H., and Otani, S. (1984). “U.S.-Japan cooperative research on RC full-scale building test. Part 5: discussion on dynamic response system.”Proc., 8th World Conf. on Earthquake Engrg., Vol. 6.
16.
Kanaan, A. E., and Powell, G. M. (1973). “DRAIN-2D, a general purpose computer program for dynamic analysis of inelastic plane structures.”Rep. No. EERC 73-6, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
17.
Mitchell, D., Adams, J., DeVall, R., Lo, R. C., and Weichert, D. (1986). “Lessons from the 1985 Mexican earthquake.”Can. J. Civ. Engrg., Ottawa, Canada, 13(5), 535–557.
18.
National Building Code of Canada. (1990). Associate Committee on the Nat. Build. Code (NBC), Nat. Res. Council of Canada, Ottawa, Ont., Canada.
19.
National Earthquake Hazards Reduction Program (NEHRP). (1988). “National earthquake hazards reduction program, recommended provisions for the development of seismic regulations for new buildings.”Part 1: Provisions, Part 2: Commentary, Build. Seismic Safety Council/Fed. Emergency Mgmt. Agency, Washington, D.C.
20.
Park, R., and Paulay, T. (1975). Reinforced concrete structures. John Wiley & Sons, Inc., New York, N.Y.
21.
Paulay, T.(1986). “The design of ductile R/C structural walls for earthquake resistance.”Earthquake Spectra, 2(4), 783–823.
22.
Paulay, T.(1971a). “Simulated seismic loading of spandrel beams.”J. Struct. Engrg., ASCE, 97(9), 2407–2419.
23.
Paulay, T.(1971b). “Coupling beams of RC shear walls.”J. Struct. Engrg., ASCE, 97(3), 843–862.
24.
Pekau, O. A., and Cistera, V.(1989). “Behavior of nonlinear coupled shear walls with flexible bases.”Can. J. Civ. Engrg., Ottawa, Canada, 16, 45–54.
25.
Romo, M. P., and Jaime, A. (1986). “Dynamic characteristics of some clays of the Mexico valley and seismic response of the ground.”Tech. Rep., Engrg. Inst. of Mexico, Mexico (in Spanish).
26.
Schnabel, P. B., Seed, H. B., and Lysmer, J. (1972). “Shake—a computer program for earthquake response analysis of horizontally layered sites.”Rep. No. EERC 72-12, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
27.
Schnobrich, W. C.(1977). “Behaviour of RC structures predicted by finite element method.”Comp. and Struct., 7(3), 365–376.
28.
Seed, H. B., and Idriss, I. M. (1970). “Soils moduli and damping factors for dynamic response analyses.”Rep. No. EERC 70-10, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
29.
Seed, H. B., Wong, R. T., Idriss, I. M., and Tobimatsu, K.(1986). “Moduli and damping factor for dynamic analyses of cohesionless soils.”J. Geotech. Engrg., ASCE, 112(11), 1016–1032.
30.
Subedi, N. K.(1991). “RC coupled shear wall structures. II: ultimate strength calculations.”J. Struct. Engrg., ASCE, 117(3), 681–698.
31.
Takeda, T., Sozen, M. A., and Nielsen, N.(1970). “R/C response to simulated earthquake.”J. Struct. Engrg., ASCE, 96(12), 2557–2573.
32.
Tso, W. K., and Chen, P. C. K.(1972). “Flexible foundation effect on coupled shear walls.”J. Am. Concrete Inst., 69(11), 678–683.
33.
Veletsos, A. S., and Meek, J. W.(1974). “Dynamic behaviour of building-foundation systems.”Earthquake Engrg. and Struct. Dynamics, 3(2), 121–138.
34.
Warde, J. (1989). “Propriétés dynamique de quelques sols cohésifs de l′Est du Canada,” MSc thesis, Sherbrooke Univ., Sherbrooke, Canada.
35.
Wight, J. K.(1988). “Earthquake design compared to measured response.”J. Struct. Engrg., ASCE, 112(1), 149–164.
36.
Wolf, J. P. (1985). Dynamic soil-structure interaction. Prentice-Hall, Inc., Englewood Cliffs, N.J.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 122 • Issue 10 • October 1996
Pages: 1187 - 1197
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Oct 1, 1996
Published in print: Oct 1996
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.