Title:
Ultra-High-Toughness Concrete Retrofitted Boundary Column Shear Walls: Tests and Capacity Prediction
Author(s):
Hongmei Zhang, Giorgio Monti, Yuanfeng Duan, Zhiyuan Chen, and Chen Gu
Publication:
Structural Journal
Volume:
120
Issue:
5
Appears on pages(s):
3-18
Keywords:
boundary columns; cyclic loading test; retrofitting; seismic performance; shear wall; ultra-high-toughness
DOI:
10.14359/51738829
Date:
9/1/2023
Abstract:
The rapid growth of the construction industry in Asia and the consequent updating of design specifications put forward higher performance requirements for structural components, which results in a large number of existing shear walls that are not compliant with the current seismic standards. A prospective retrofitting method, which is based on replacing the existing boundary concrete or attaching external boundary columns to nonconforming shear walls, is experimentally studied. Four shear-wall specimens were designed according to the current Chinese design code: one using plain concrete boundary columns and three using ultra-high-toughness
boundary columns (UHTBCs), adopting three different strengthening strategies relevant to the boundary size and the connection form. Cyclic performance, damage patterns due to UHTBCs, and connection form are discussed based on the experimental results, from which it was ascertained that shear walls with UHTBCs show improved seismic performance, compatible with the requirements of the current seismic design code, even for the reduced-boundary UHTBCs and non-connection specimens. The predictive equation for the sectional moment capacity of shear walls with UHTBCs
was discussed as a practical tool for retrofitting applications. This study highlights the most important features of a rapid retrofitting measure to improve the resilience of existing nonconforming shearwall structures, while also proving to be an effective measure for newly constructed structures.
Related References:
ACI Committee 318, 2019, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19) (Reapproved 2022),” American Concrete Institute, Farmington Hills, MI, 624 pp.
Al-Gemeel, A. N., and Zhuge, Y., 2019, “Using Textile Reinforced Engineered Cementitious Composite for Concrete Columns Confinement,” Composite Structures, V. 210, Feb., pp. 695-706. doi: 10.1016/j.compstruct.2018.11.093
Bohl, A., and Adebar, P., 2011, “Plastic Hinge Lengths in High-Rise Concrete Shear Walls,” ACI Structural Journal, V. 108, No. 2, Mar.-Apr., pp. 148-157.
Boshoff, W. P.; Mechtcherine, V.; and van Zijl, G. P. A. G., 2009, “Characterizing the Time-Dependent Behaviour on the Single Fibre Level of SHCC: Part 1: Mechanism of Fibre Pull-Out Creep,” Cement and Concrete Research, V. 39, No. 9, Sept., pp. 779-786. doi: 10.1016/j.cemconres.2009.06.007
Chrysanidis, T., and Tegos, I., 2020, “Axial and Transverse Strengthening of R/C Circular Columns: Conventional and New Type of Steel and Hybrid Jackets Using High-Strength Mortar,” Journal of Building Engineering, V. 30, July, Article No. 101236. doi: 10.1016/j.jobe.2020.101236
Dang, Z.; Liang, X. W.; Deng, M. K.; Li, F.; and Yu, J., 2014, “Experimental and Theoretical Studies on Seismic Behavior of Fiber Reinforced Concrete Shear Walls,” Journal of Building Structures, V. 35, No. 6, pp. 12-22.
Dazio, A.; Buzzini, D.; and Trüb, M., 2008, “Nonlinear Cyclic Behaviour of Hybrid Fibre Concrete Structural Walls,” Engineering Structures, V. 30, No. 11, Nov., pp. 3141-3150. doi: 10.1016/j.engstruct.2008.03.018
De Domenico, D.; Quaranta, G.; Zeng, Q.; and Monti, G., 2023, “Shear Capacity of RC Elements with Transverse Reinforcement through a Variable-Angle Truss Model with Machine-Learning-Calibrated Coefficients,” Artificial Intelligence and Machine Learning Techniques for Civil Engineering, V. Plevris, A. Ahmad, and N. D. Lagaros, eds., IGI Global, Hershey, PA.
Fischer, G., and Li, V. C., 2002a, “Effect of Matrix Ductility on Deformation Behavior of Steel-Reinforced ECC Flexural Members under Reversed Cyclic Loading Conditions,” ACI Structural Journal, V. 99, No. 6, Nov.-Dec., pp. 781-790.
Fischer, G., and Li, V. C., 2002b, “Influence of Matrix Ductility on Tension-Stiffening Behavior of Steel Reinforced Engineered Cementitious Composites (ECC),” ACI Structural Journal, V. 99, No. 1, Jan.-Feb., pp. 104-111.
Fischer, G., and Li, V. C., 2003, “Deformation Behavior of Fiber-Reinforced Polymer Reinforced Engineered Cementitious Composite (ECC) Flexural Members under Reversed Cyclic Loading Conditions,” ACI Structural Journal, V. 100, No. 1, Jan.-Feb., pp. 25-35.
GB 50011-2010, 2010, “Code for Seismic Design of Buildings,” Ministry of Housing and Urban-Rural Development of the People’s Republic of China, Beijing, China.
JGJ/T 101-2015, 2015, “Specification for Seismic Test of Buildings,” Ministry of Housing and Urban-Rural Development of the People’s Republic of China, Beijing, China.
JG/T 398-2012, 2012, “The Grouting Coupler for Rebars Splicing,” Ministry of Housing and Urban-Rural Development of the People’s Republic of China, Beijing, China.
Kesner, K., and Billington, S. L., 2005, “Investigation of Infill Panels Made from Engineered Cementitious Composites for Seismic Strengthening and Retrofit,” Journal of Structural Engineering, ASCE, V. 131, No. 11, Nov., pp. 1712-1720. doi: 10.1061/(ASCE)0733-9445(2005)131:11(1712)
Li, H.; Xu, S.; and Leung, C. K. Y., 2009, “Tensile and Flexural Properties of Ultra High Toughness Cementitious Composite,” Journal of Wuhan University of Technology-Materials Science Edition, V. 24, No. 4, Aug., pp. 677-683. doi: 10.1007/s11595-009-4677-5
Li, M.; Luu, H. C.; Wu, C.; Mo, Y. L.; and Hsu, T. T. C., 2014, “Seismic Performance of Reinforced Engineered Cementitious Composite Shear Walls,” Earthquakes and Structures, V. 7, No. 5, pp. 691-704. doi: 10.12989/eas.2014.7.5.691
Li, Q. H., and Xu, S. L., 2009, “Experimental Investigation and Analysis on Flexural Performance of Functionally Graded Composite Beam Crack-Controlled by Ultrahigh Toughness Cementitious Composites,” Science in China Series E: Technological Sciences, V. 52, No. 6, June, pp. 1648-1664. doi: 10.1007/s11431-009-0161-x
Li, V. C.; Wang, S.; and Wu, C., 2001, “Tensile Strain-Hardening Behavior of Polyvinyl Alcohol Engineered Cementitious Composite (PVA-ECC),” ACI Materials Journal, V. 98, No. 6, Nov.-Dec., pp. 483-492.
Liang, X.-W.; Zheng, Y.; Deng, M.-K.; Kou, J.-L.; and Che, J.-L., 2013, “An Investigation of Deformation Behavior of the Shear Wall with Fiber-Reinforced Concrete in Plastic Hinge Region,” Engineering Mechanics, V. 30, No. 3, Mar., pp. 256-262.
Lu, X.; Zhang, Y.; Zhang, H.; Zhang, H.; and Xiao, R., 2018, “Experimental Study on Seismic Performance of Steel Fiber Reinforced High Strength Concrete Composite Shear Walls with Different Steel Fiber Volume Fractions,” Engineering Structures, V. 171, Sept., pp. 247-259. doi: 10.1016/j.engstruct.2018.05.068
Mandelbrot, B. B., 1982, The Fractal Geometry of Nature, W. H. Freeman and Company, New York City, NY.
Mirmiran, A., and Shahawy, M., 1997, “Behavior of Concrete Columns Confined by Fiber Composites,” Journal of Structural Engineering, ASCE, V. 123, No. 5, May, pp. 583-590. doi: 10.1061/(ASCE)0733-9445(1997)123:5(583)
Mustafaraj, E.; Yardim, Y.; Corradi, M.; and Borri, A., 2020, “Polypropylene as a Retrofitting Material for Shear Walls,” Materials, V. 13, No. 11, June, Article No. 2503. doi: 10.3390/ma13112503
Mutō, K., 1969, Newly-Devised Reinforced Concrete Shear Walls for High-Rise Building Structures, Muto Institute of Structural Mechanics, Tokyo, Japan, 38 pp.
Naaman, A. E., and Najm, H., 1991, “Bond-Slip Mechanisms of Steel Fibers in Concrete,” ACI Materials Journal, V. 88, No. 2, Mar.-Apr., pp. 135-145.
Olsen, E. C., and Billington, S. L., 2011, “Cyclic Response of Precast High-Performance Fiber-Reinforced Concrete Infill Panels,” ACI Structural Journal, V. 108, No. 1, Jan.-Feb., pp. 51-60.
Park, K.-G., 2006, “Design and Analysis on the Connections of RC Precast Large Panel,” Journal of Korean Association for Spatial Structures, V. 6, No. 2, Serial No. 20, pp. 85-92.
Parra-Montesinos, G. J., 2005, “High-Performance Fiber-Reinforced Cement Composites: An Alternative for Seismic Design of Structures,” ACI Structural Journal, V. 102, No. 5, Sept.-Oct., pp. 668-675.
Parra-Montesinos, G. J.; Canbolat, B. A.; and Jeyaraman, G. R., 2006, “Relaxation of Confinement Reinforcement Requirements in Structural Walls through the Use of Fiber Reinforced Cement Composites,” Proceedings of the 8th U.S. National Conference on Earthquake Engineering, San Francisco, CA, pp. 4045-4054.
Prota, A.; Nanni, A.; Manfredi, G.; and Cosenza, E., 2004, “Selective Upgrade of Underdesigned Reinforced Concrete Beam-Column Joints Using Carbon Fiber-Reinforced Polymers,” ACI Structural Journal, V. 101, No. 5, Sept.-Oct., pp. 699-707.
Sørensen, J. H.; Hoang, L. C.; Olesen, J. F.; and Fischer, G., 2017a, “Tensile Capacity of Loop Connections Grouted with Concrete or Mortar,” Magazine of Concrete Research, V. 69, No. 17, Sept., pp. 892-904. doi: 10.1680/jmacr.16.00466
Sørensen, J. H.; Hoang, L. C.; Olesen, J. F.; and Fischer, G., 2017b, “Test and Analysis of a New Ductile Shear Connection Design for RC Shear Walls,” Structural Concrete, V. 18, No. 1, Feb., pp. 189-204. doi: 10.1002/suco.201600056
Woods, J. E.; Lau, D. T.; and Cruz-Noguez, C. A., 2016, “In-Plane Seismic Strengthening of Nonductile Reinforced Concrete Shear Walls Using Externally Bonded CFRP Sheets,” Journal of Composites for Construction, ASCE, V. 20, No. 6, Dec., p. 04016052. doi: 10.1061/(ASCE)CC.1943-5614.0000705
Xu, S.-L., and Cai, X.-R., 2010, “Experimental Study and Theoretical Models on Compressive Properties of Ultrahigh Toughness Cementitious Composites,” Journal of Materials in Civil Engineering, ASCE, V. 22, No. 10, Oct., pp. 1067-1077. doi: 10.1061/(ASCE)MT.1943-5533.0000109
Xu, S. L.; Wang, N.; and Zhang, X. F., 2012, “Flexural Behavior of Plain Concrete Beams Strengthened with Ultra High Toughness Cementitious Composites Layer,” Materials and Structures, V. 45, No. 6, June, pp. 851-859. doi: 10.1617/s11527-011-9803-0
Zhang, H.; Zhang, Y.; Lu, X.; Duan, Y.; and Zhang, H., 2020, “Influence of Axial Load Ratio on the Seismic Behavior of Steel Fiber–Reinforced Concrete Composite Shear Walls,” Journal of Structural Engineering, ASCE, V. 146, No. 1, Jan., p. 04019171. doi: 10.1061/(ASCE)ST.1943-541X.0002444
Zhang, H. M.; Lu, X. L.; Duan, Y. F.; and Zhu, Y., 2014, “Experimental Study on Failure Mechanism of RC Walls with Different Boundary Elements under Vertical and Lateral Loads,” Advances in Structural Engineering, V. 17, No. 3, Mar., pp. 361-379. doi: 10.1260/1369-4332.17.3.361
Zhang, Y.; Zhang, H.; and Lu, X., 2022, “Seismic Performance Evaluation and Experimental Validation of Steel-Fiber-Reinforced High-Strength-Concrete Composite Shear Walls,” Structures, V. 35, Jan., pp. 765-779. doi: 10.1016/j.istruc.2021.11.038
Zhou, Y.; Lu, X.; and Dong, Y., 2010, “Seismic Behavior of Composite Shear Walls with Multi-Embedded Steel Sections. Part I: Experiment,” The Structural Design of Tall and Special Buildings, V. 19, No. 6, pp. 618-636. doi: 10.1002/tal.598