Title:
Seismic Performance of Reinforced Concrete Intermediate Short Columns Failed in Shear
Author(s):
Yi-An Li, Pu-Wen Weng, and Shyh-Jiann Hwang
Publication:
Structural Journal
Volume:
116
Issue:
3
Appears on pages(s):
195-206
Keywords:
force-transfer mechanism; intermediate short columns; load-displacement curve; shear deformation; shear failure
DOI:
10.14359/51713309
Date:
5/1/2019
Abstract:
According to the previous earthquake reconnaissance, existing reinforced concrete buildings with intermediate short columns are vulnerable to shear failure. Thus, a simulation of the behavior of intermediate short columns has a significant influence on the seismic evaluation. This paper tests eight intermediate short columns in shear failure cases with different combinations of structural parameters, such as height-to-depth ratio, transverse reinforcement ratio, and axial load ratio. According to the test results, this paper proposes a lateral load-displacement curve for the intermediate short column failed in shear with a height-to-depth ratio of between 2 and 4. In addition to comparing the proposed curve with the test data in this paper, data from other literature are also used for verification. Test verification indicates that the proposed curve possesses a reasonable prediction, which is helpful for seismic evaluation of existing buildings.
Related References:
1. Li, Y. A., and Hwang, S. J., “Prediction of Lateral Load Displacement Curves for Reinforced Concrete Short Columns Failed in Shear,” Journal of Structural Engineering, ASCE, V. 143, No. 2, 2017, pp. 04016164 doi: 10.1061/(ASCE)ST.1943-541X.0001656
2. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 519 pp.
3. Arakawa, T.; Arai, Y.; Mizoguchi, M.; and Yoshida, M., “Shear Resisting Behavior of Short Reinforced Concrete Columns under Biaxial Bending-Shear,” Proceedings of the Japan Concrete Institute, V. 11, No. 2, 1989, pp. 471-476.
4. Umehara, H., and Jirsa, J. O., “Short Rectangular RC Columns Under Bidirectional Loadings,” Journal of Structural Engineering, ASCE, V. 110, No. 3, 1984, pp. 605-618. doi: 10.1061/(ASCE)0733-9445(1984)110:3(605)
5. Henkhaus, K.; Pujol, S.; and Ramirez, J., “Axial Failure of Reinforced Concrete Columns Damaged by Shear Reversals,” Journal of Structural Engineering, ASCE, V. 139, No. 7, 2013, pp. 1172-1180. doi: 10.1061/(ASCE)ST.1943-541X.0000673
6. ASCE/SEI 41-13, “Seismic Evaluation and Retrofit of Existing Buildings (41-13),” American Society of Civil Engineers, ASCE, Reston, VA, 2014, 518 pp.
7. Weng, P. W., “Study on Seismic Performance Curves of Reinforced Concrete Short Columns Failed in Shear,” master’s thesis, Department of Civil and Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, 2007, 212 pp. (in Chinese)
8. Berry, M.; Parrish, M.; and Eberhard, M., “PEER Structural Performance Database User's Manual,” University of California, Berkeley, Berkeley, CA, 2004, 43 pp.
9. ACI Committee 374, “Acceptance Criteria for Moment Frames Based on Structural Testing (ACI 374.1-05) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2006, 9 pp.
10. Li, Y. A.; Huang, Y. T.; and Hwang, S. J., “Seismic Response of Reinforced Concrete Short Columns Failed in Shear,” ACI Structural Journal, V. 111, No. 4, July-Aug. 2014, pp. 945-954. doi: 10.14359/51686780
11. MacGregor, J. G., Reinforced Concrete: Mechanics and Design, third edition, Prentice Hall Inc., Upper Saddle River, NJ, 1997, 939 pp.
12. Hwang, S. J.; Tsai, R. J.; Lam, W. K.; and Moehle, J. P., “Simplification of Softened Strut-and-Tie Model for Strength Prediction of Discontinuity Regions,” ACI Structural Journal, V. 114, No. 5, Sept.-Oct. 2017, pp. 1239-1248. doi: 10.14359/51689787
13. Lim, E.; Hwang, S. J.; Cheng, C. H.; and Lin, P. Y., “Cyclic Tests of Reinforced Concrete Coupling Beam with Intermediate Span-Depth Ratio,” ACI Structural Journal, V. 113, No. 3, May-June 2016, pp. 515-524. doi: 10.14359/51688473
14. Thürlimann, B., “Shear Strength of Reinforced and Prestressed Concrete-CEB Approach,” Concrete Design: U.S. and European Practices, SP-59, American Concrete Institute, Farmington Hills, MI, 1979, pp. 93-116.
15. Weng, P. W.; Li, Y. A.; Tu, Y. S.; and Hwang, S. J., “Prediction of the Lateral Load-Displacement Curves for Reinforced Concrete Squat Walls Failing in Shear,” Journal of Structural Engineering, ASCE, V. 143, No. 10, 2017, p. 04017141 doi: 10.1061/(ASCE)ST.1943-541X.0001872
16. Moehle, J. P.; Anagnos, T.; Comerio, M.; Ramirez, J.; Stewart, J.; and Pujol, S., “Mitigation of Collapse Risk in Vulnerable Concrete Buildings (NEES-2008-0637),” 2017, https://datacenterhub.org/resources/14366.