Title:
Cyclic Response of Reinforced Concrete Squat Walls to Boundary Element Arrangement
Author(s):
Min-Yuan Cheng, Yen Chou, and Leonardus S. B. Wibowo
Publication:
Structural Journal
Volume:
117
Issue:
4
Appears on pages(s):
15-24
Keywords:
boundary element; high strength; low rise; wall
DOI:
10.14359/51725754
Date:
7/1/2020
Abstract:
An experimental program consisting of four specimens was conducted to evaluate effects of different arrangements of boundary elements on cyclic responses of reinforced concrete (RC) squat walls with a shear span-to-length ratio hw/lw of 1.0. Three test specimens were designed to have shear stress demand associated with the development of probable flexural strength. One specimen used high-strength concrete and steel; shear stress demand in this specimen was slightly reduced due to the use of high-strength concrete. Test results showed that peak strengths of all test specimens can be satisfactorily predicted by nominal flexural strength. Deformation capacity increased more effectively in specimens using barbell-shaped boundary elements. For the two specimens having barbell-shaped special boundary elements and equivalent steel force, Specimen BB_H using high-strength steel with tested yield stress exceeding 120 ksi (827 MPa) and high-strength concrete with cylinder strength of approximately 12 ksi (83 MPa) exhibited larger deformation capacity than that of Specimen BB.
Related References:
ACI Committee 318, 2014, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318 R-14),” American Concrete Institute, Farmington Hills, MI, 519 pp.
ASTM A370-17, 2017, “Standard Test Methods and Definitions for Mechanical Testing of Steel Products,” ASTM International, West Conshohocken, PA, 49 pp.
Athanasopoulou, A., and Parra-Montesinos, G. J., 2013, “Experimental Study on the Seismic Behavior of High-Performance Fiber-Reinforced Concrete Low-Rise Walls,” ACI Structural Journal, V. 110, No. 5, Sept.-Oct., pp. 767-778.
Cheng, M.-Y.; Hung, S.-H.; Lequesne, R. D.; and Lepage, A., 2016, “Earthquake-Resistant Squat Walls Reinforced with High Strength Steel,” ACI Structural Journal, V. 113, No. 5, Sept.-Oct., pp. 1065-1076. doi: 10.14359/51688825
Escolano-Margarit, D.; Klenke, A.; Pujol, S.; and Benavent-Climent, A., 2012, “Failure Mechanism of Reinforced Concrete Structural Walls with and without Confinement,” 15 World Conference on Earthquake Engineering, Sept., Lisbon, Portugal, pp. 1-10.
Kuang, J. S., and Ho, Y. B., 2008, “Seismic Behavior and Ductility of Squat Reinforced Concrete Shear Walls with Nonseismic Detailing,” ACI Structural Journal, V. 105, No. 2, Mar.-Apr., pp. 225-231.
Luna, B. N.; Rivera, J. P.; and Whittaker, A. S., 2015, “Seismic Behavior of Low-Aspect-Ratio Reinforced Concrete Shear Walls,” ACI Structural Journal, V. 112, No. 5, Sept.-Oct., pp. 593-604. doi: 10.14359/51687709
Oesterle, R. B.; Fiorato, A. E.; and Corley, W. G., 1980, “Reinforcement Details for Earthquake-Resistant Structural Walls,” Concrete International, V. 2, No. 12, Dec., pp. 55-56.
Taleb, R.; Kono, S.; Tani, M.; and Sakashita, M., 2014, “Effect of End Region Confinement on Seismic Performance of RC Cantilever Walls,” Proceedings of the 10th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Anchorage, AK, July, 11 pp.
Wallace, J. W., 1995, “Seismic Design of RC Structural Walls. Part I: New Code Format,” Journal of Structural Engineering, ASCE, V. 121, No. 1, Jan., pp. 75-87. doi: 10.1061/(ASCE)0733-9445(1995)121:1(75)
Wallace, J. W.; Massone, L. M.; Bonelli, P.; Dragovich, J.; Lagos, R.; Lüders, C.; and Moehle, J., 2012, “Damage and Implications for Seismic Design of RC Structural Wall Buildings,” Earthquake Spectra, V. 28, No. 1, June, pp. 281-299. doi: 10.1193/1.4000047
Wallace, J. W., and Orakcal, K., 2002, “ACI 318-99 Provisions for Seismic Design of Structural Walls,” ACI Structural Journal, V. 99, No. 4, July-Aug., pp. 499-508.
Wibowo, L. S. B.; Cheng, M.-Y.; Huang, F.-C.; and Tai, T.-Y., 2017, “Effectiveness of High-Strength Hoops in High-Strength Flexural Members,” ACI Structural Journal, V. 114, No. 4, Jul.-Aug., pp. 887-897.