Title:
Seismic Performance of Varying Aspect Ratio Full-Scale Concrete Walls
Author(s):
Gloria Faraone, Tara C. Hutchinson, Roberto Piccinin, and John F. Silva
Publication:
Structural Journal
Volume:
119
Issue:
6
Appears on pages(s):
19-34
Keywords:
DOI:
10.14359/51737173
Date:
11/1/2022
Abstract:
Earthquake-induced damage to concrete shear walls will manifest in the form of cracks and spalled regions. This damage will naturally influence the performance of anchors installed in the wall face. Conversely, anchors could affect the crack pattern developing in walls. To study the relationship between anchors and shear walls subjected to seismic-induced damage, two identical full-scale reinforced concrete shear walls with low aspect ratios were designed and tested under equivalent seismic loads. One of the walls was tested absent axial load to investigate the effect of compression on wall damage. Both walls exhibited appreciable deformation
capacity and significant energy dissipation. Buckling and rupture of the longitudinal reinforcing bars after diagonal cracking and concrete crushing resulted in mixed shear-flexure failure modes. Results from these tests are compared with prior tests on a flexure-dominated wall, with particular attention given to the attained displacement ductility. Finally, the strut-and-tie and shear strength models used to estimate wall strength and failure mode demonstrate consistent comparison with the experimental results.
Related References:
Abdullah S. A., and Wallace, J. W., 2019, “Drift Capacity of Reinforced Concrete Structural Walls with Special Boundary Elements,” ACI Structural Journal, V. 116, No. 1, Jan., pp. 183-194.
ACI Committee 318, 2019, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19),” American Concrete Institute, Farmington Hills, MI, 624 pp.
ACI Committee 374, 2013, “Guide for Testing Reinforced Concrete Structural Elements under Slowly Applied Simulated Seismic Loads (ACI 374.2R-13),” American Concrete Institute, Farmington Hills, MI, 18 pp.
ASCE/SEI 7-16, 2016, “Minimum Design Loads and Associated Criteria for Buildings and Other Structures,” American Society of Civil Engineers, Reston, VA, 800 pp.
ASCE/SEI 41-13, 2014, “Seismic Evaluation and Retrofit of Existing Buildings,” American Society of Civil Engineers, Reston, VA.
Carrillo, J., and Alcocer, S. M., 2012, “Acceptance Limits for Performance-Based Seismic Design of RC Walls for Low-Rise Housing,” Earthquake Engineering & Structural Dynamics, V. 41, No. 15, Dec., pp. 2273-2288. doi: 10.1002/eqe.2186
Eligehausen, R.; Mallée, R.; and Silva, J. F., 2006, Anchorage in Concrete Construction, Ernst & Sohn, Berlin, Germany, 391 pp.
Faraone, G., and Hutchinson, T. C., 2021, “Behavior of Post-Installed Anchors in Reinforced Concrete Shear Walls Subjected to Cyclic Lateral Loading. Part II: Squat Walls Test Program,” Report No. SSRP 2021/01, University of California, San Diego, La Jolla, CA.
Faraone, G.; Hutchinson, T. C.; Piccinin, R.; and Silva, J., 2019a, “Back-Estimated Ductility and Response Modification Coefficient (R factor) for Concrete Shear Walls,” Proceedings of the ACI Italy Chapter, Milan, Italy.
Faraone, G.; Hutchinson, T. C.; Piccinin, R.; and Silva, J., 2019b, “Cyclic Lateral Load Response of a Full-Scale Flexure-Dominated Shear Wall,” ACI Structural Journal, V. 116, No. 6, Nov., pp. 281-292. doi: 10.14359/51718068
Faraone, G.; Hutchinson, T. C.; Piccinin, R.; and Silva, J., 2019c, “Performance of Post-Installed Anchors in a Progressively Damaged Concrete Shear Wall,” ACI Structural Journal, V. 116, No. 6, Nov., pp. 293-306. doi: 10.14359/51718069
Faraone, G.; Hutchinson, T. C.; Piccinin, R.; and Silva, J. F., 2022, “Anchor Performance in Cyclically Loaded Shear Walls,” ACI Structural Journal, V. 119, No. 6, Nov.
FEMA 356, 2000, “Prestandard and Commentary for the Seismic Rehabilitation of Buildings,” Federal Emergency Management Agency, Washington, DC, 518 pp.
Ghobarah, A., 2004, “On Drift Limits Associated with Different Damage Levels,” Proceedings, International Workshop on Performance-Based Seismic Design, Bled, Slovenia, 12 pp.
Hwang, S.-J.; Fang, W.-H.; Lee, H.-J.; and Yu, H.-W., 2001, “Analytical Model for Predicting Shear Strength of Squat Walls,” Journal of Structural Engineering, ASCE, V. 127, No. 1, Jan., pp. 43-50. doi: 10.1061/(ASCE)0733-9445(2001)127:1(43)
Kassem, W., 2015, “Shear Strength of Squat Walls: A Strut-and-Tie Model and Closed-Form Design Formula,” Engineering Structures, V. 84, Feb., pp. 430-438. doi: 10.1016/j.engstruct.2014.11.027
Krolicki, J.; Maffei, J.; and Calvi, G. M., 2011, “Shear Strength of Reinforced Concrete Walls Subjected to Cyclic Loading,” Journal of Earthquake Engineering, V. 15, No. sup1, pp. 30-71. doi: 10.1080/13632469.2011.562049
Lefas, I. D.; Kotsovos, M. D.; and Ambraseys, N. N., 1990, “Behavior of Reinforced Concrete Structural Walls: Strength, Deformation Characteristics, and Failure Mechanism,” ACI Structural Journal, V. 87, No. 1, Jan.-Feb., pp. 23-31.
Li, B.; Pan, Z.; and Xiang, W., 2015, “Experimental Evaluation of Seismic Performance of Squat RC Structural Walls with Limited Ductility Reinforcing Details,” Journal of Earthquake Engineering, V. 19, No. 2, pp. 313-331. doi: 10.1080/13632469.2014.962669
Massone, L. M., and Wallace, J. W., 2004, “Load-Deformation Responses of Slender Reinforced Concrete Walls,” ACI Structural Journal, V. 101, No. 1, Jan.-Feb., pp. 103-113.
Moehle, J. P., 1992, “Displacement-Based Design of RC Structures Subjected to Earthquakes,” Earthquake Spectra, V. 8, No. 3, Aug., pp. 403-428. doi: 10.1193/1.1585688
Orakcal, K.; Massone, L. M.; and Wallace, J. W., 2009, “Shear Strength of Lightly Reinforced Wall Piers and Spandrels,” ACI Structural Journal, V. 106, No. 4, July-Aug., pp. 455-465.
Park, R., and Paulay, T., 1975, Reinforced Concrete Structures, John Wiley & Sons, Inc., New York, 800 pp.
Paulay, T., and Priestley, M. J. N., 1992, Seismic Design of Reinforced Concrete and Masonry Buildings, John Wiley & Sons, Inc., New York, 768 pp.
Paulay, T.; Priestley, M. J. N.; and Synge, A. J., 1982, “Ductility in Earthquake Resisting Squat Shearwalls,” ACI Journal Proceedings, V. 79, No. 4, July-Aug., pp. 257-269.
Salonikios, T. N.; Kappos, A. J.; Tegos, I. A.; and Penelis, G. G., 1999, “Cyclic Load Behavior of Low-Slenderness Reinforced Concrete Walls: Design Basis and Test Results,” ACI Structural Journal, V. 96, No. 4, July-Aug., pp. 649-661.
Schlaich, J.; Schafer, K.; and Jennewein, M., 1987, “Toward a Consistent Design of Structural Concrete,” PCI Journal, V. 32, No. 3, May-June, pp. 74-150. doi: pp.10.15554/pcij.05011987.74.150
SEAOC, 1999, “Recommended Lateral Force Requirements and Commentary,” seventh edition, Structural Engineers Association of California, Sacramento, CA, Sept., 472 pp.
Veletsos, A. S., and Newmark, N. M., 1960, “Effect of Inelastic Behavior on the Response of Simple Systems to Earthquake Motions,” Proceedings of the Second World Conference on Earthquake Engineering, Tokyo and Kyoto, Japan, pp. 895-912.
Yanez, F. V.; Park, R.; and Paulay, T., 1989, “Strut and Tie Models for Reinforced Concrete Design and Analysis,” New Zealand Concrete Society Silver Jubilee Conference, Wairakei, Taupō, New Zealand, pp. 43-55.