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http://dx.doi.org/10.12989/scs.2020.36.3.339

Experimental study on seismic performance of steel reinforced concrete T-shaped columns  

Liu, Zuqiang (School of Civil Engineering, Xi'an University of Architecture and Technology)
Zhou, Chaofeng (School of Civil Engineering, Xi'an University of Architecture and Technology)
Xue, Jianyang (School of Civil Engineering, Xi'an University of Architecture and Technology)
Leon, Roberto T. (Department of Civil and Environmental Engineering, Virginia Tech)
Publication Information
Steel and Composite Structures / v.36, no.3, 2020 , pp. 339-353 More about this Journal
Abstract
This study investigates the seismic performance of steel reinforced concrete (SRC) T-shaped columns under low cyclic loading tests. Based on test results of ten half-scale column specimens, failure patterns, hysteretic behavior, skeleton curves, ultimate strength, ductility, stiffness degradation and energy dissipation capacity were analyzed. The main variables included loading angles, axial compression ratios and steel ratios. The test results show that the average values of the ductility factor and the equivalent viscous damping coefficient with respect to the failure of the columns were 5.23 and 0.373, respectively, reflecting good seismic performance. The ductility decreased and the initial stiffness increased as the axial compression ratio of the columns increased. The strength increased with increasing steel ratio, as expected. The columns displaced along the web had higher strength and initial stiffness, while the columns displaced along the flange had better ductility and energy dissipation capacity. Based on the test and analysis results, a formula is proposed to calculate the effective stiffness of SRC T-shaped columns.
Keywords
steel reinforced concrete; T-shaped column; seismic performance; cyclic loading; effective stiffness;
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Times Cited By KSCI : 4  (Citation Analysis)
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1 Park, R. and Paulay, T. (1975), Reinforced concrete structures, John Wiley and Sons, New York, NY, USA.
2 Ramamurthy, L.N. and Khan, A.H. (1983), "L-shaped column design for biaxial eccentricity", J. Struct. Eng., 109(8), 1903-1917. https://doi.org/10.1061/(asce)0733-9445(1983)109:8(1903).   DOI
3 Tsao, W.H. and Hsu, C.T.T. (1993), "A nonlinear computer analysis of biaxially loaded L-shaped slender reinforced concrete columns", Comput. Struct., 49(4), 579-588. https://doi.org/10.1016/0045-7949(93)90062-I.   DOI
4 Tokgoz, S. and Dundar, C. (2012), "Test of eccentrically loaded Lshaped section steel fibre high strength reinforced concrete and composite columns", Eng. Struct., 38(5), 134-141. https://doi.org/10.1016/j.engstruct.2012.01.009.   DOI
5 Xiao, J.Z., Li, J. and Chen, J. (2011), "Experimental study on the seismic response of braced reinforced concrete frame with irregular columns", Earthq. Eng. Eng. Vib., 10(4), 487-494. https://doi.org/10.1007/s11803-011-0083-z.   DOI
6 Abo-Zai, L., Hassan, A. and Abdel-Hafez, L.M. (2019), "Reparing post-heated L-shaped RC columns with advanced thin concrete jacketing", Constr. Build. Mater., 44(2),212-218. https://doi.org/10.1016/j.conbuildmat.2019.06.101.
7 Chen, Z.P., Xu, J.J., Chen, Y.L. and Xue, J.Y. (2016), "Axial compression ratio limit values for steel reinforced concrete (SRC) special-shaped columns", Steel Compos. Struct., 20(2), 295-316. https://doi.org/10.12989/scs.2016.20.2.295.   DOI
8 Elwood, K.J. and Eberhard, M.O. (2009), "Effective stiffness of reinforced concrete columns", ACI Struct. J., 106(4), 476-484. https://doi.org/10.14359/56613.
9 Hsu, T.C. (1989), "T-shaped reinforced concrete members under biaxial bending and axial compression", ACI Struct. J., 86(4), 460-468. https://doi.org/10.14359/2967.
10 Kara, I.F., Ashour, A.F. and Koroglu, M.A. (2015), "Flexural behavior of hybrid FRP/steel reinforced concrete beams", Compos. Struct., 129, 111-121. https://doi.org/10.1016/j.compstruct.2015.03.073.   DOI
11 Montava, I., Irles, R., Pomares, J.C. and Gonzalez, A. (2019), "Experimental study of steel reinforced concrete (SRC) joints", Appl. Sciences-Basel, 9(8), 1528. https://doi.org/10.3390/app9081528.   DOI
12 Kim, H.G., Kim, H.M. and Kim, S.D. (2012), "Axial behavior and strength of yLC composite columns", Adv. Struct. Eng., 15(12), 2113-2130. https://doi.org/10.1260/1369-4332.15.12.2113.   DOI
13 Kim, C.S., Park, H.G., Chung, K.S. and Choi, I.R. (2014), "Eccentric axial load capacity of high-strength steel-concrete composite columns of various sectional shapes", J. Struct. Eng., 140(4), 04013091. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000879.   DOI
14 Li, J., Wu, J.Y., Zhou, D.Y. and Nie L.P. (2002), "Experimental research on wide flange specially shaped section columns subjected to cyclic loading", J. Build. Struct., 23(1), 9-14. (in Chinese) https://doi.org/10.14006/j.jzjgxb.2002.01.002.   DOI
15 Liu, Z.Q., Xue, J.Y. and Zhao, H.T. (2016), "Seismic behavior of steel reinforced concrete special-shaped column-beam joints", Earthq. Struct., 11(4), 665-680. https://doi.org/10.12989/eas.2016.11.4.665.   DOI
16 Lai, B.L., Liew, J.Y.R. and Xiong, M.X. (2019), "Experimental and analytical investigation of composite columns made of high strength steel and high strength concrete", Steel Compos. Struct., 33(1), 899-911. https://doi.org/10.12989/scs.2019.33.1.899.
17 Nzabonimpa J.D. and Hong W.K. (2019), "Experimental investigation of hybrid mechanical joints for L-shaped columns replacing conventional grouted sleeve connections", Eng. Struct., 185, 243-277. https://doi.org/10.1016/j.engstruct.2019.01.123.   DOI
18 Nie, J.G., Ma, X.W., Tao, M.X., Fan, J.S. and Bu, F.M. (2014), "Effective stiffness of composite shear wall with double plates and filled concrete", J. Constr. Steel Res., 99, 140-148. https://doi.org/10.1016/j.jcsr.2014.04.001.   DOI
19 Patton, M.L. and Singh, K.D. (2017), "Buckling of fixed-ended concrete-filled steel columns under axial compression", Int. J. Steel Struct., 17(3), 1059-1071. https://doi.org/10.1007/s13296-017-9016-7.   DOI
20 Pham, T.P. and Li, B. (2015), "Seismic performance assessment of L-shaped reinforced concrete columns", ACI Struct. J., 112(6), 667-678. https://doi.org/10.1061/9780784412848.146.