DOI QR코드

DOI QR Code

Research on damage of solid-web steel reinforced concrete T-shaped columns subjected to various loadings

  • Xue, Jianyang (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Zhou, Chaofeng (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Liu, Zuqiang (College of Civil Engineering, Xi'an University of Architecture and Technology)
  • 투고 : 2016.11.09
  • 심사 : 2017.04.18
  • 발행 : 2017.07.20

초록

This paper presents an experimental study on damage evolution laws of solid-web steel reinforced concrete (SRC) T-shaped columns along the direction of the web under various loadings. Ten specimens with a scale ratio of 1/2 and a shear span ratio of 2.5 were designed and fabricated. The influences of various parameters, including the axial compression ratio, steel ratio, and loading mode, were examined. The mechanical performances including load-displacement curve and energy dissipation capacity under the monotonic and low cyclic loadings were analyzed. Compared with the monotonic loading, bearing capacity, ultimate deformation capacity, and energy dissipation capacity of the specimens decrease to some extent with the increase of the displacement amplitude and the number of loading cycle. The results show that the damage process of the SRC T-shaped column can be divided into five stages, namely non-damage, slight-damage, steadily-developing-damage, severe-damage and complete-damage. Finally, based on the Park-Ang model, a modified nonlinear damage model which combines the maximum deformation with hysteretic energy dissipation is proposed by taking into account the dynamic influence of the aforementioned parameters. The results show that the modified model in this paper is more accurate than Park-Ang model and can better describe the damage evolution of SRC T-shaped columns.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Shaanxi Natural Science Foundation

참고문헌

  1. Anzlin, A., Fischinger, M. and Isakovic, T. (2015), "Cyclic response of I-shaped bridge columns with substandard transverse reinforcement", Eng. Struct., 99(9), 642-652. https://doi.org/10.1016/j.engstruct.2015.05.032
  2. Balaji, K.V.G.D. and Murty, D.S.R. (2001), "Reliability analysis of RC T-shaped column sections", Ind. Concrete J., 75(3), 223-227.
  3. Cao, W.L., Huang, X.M. and Song, W.Z. (2005), "Experiment and non-linear element analyses of seismic behavior of short specially shaped columns with crossed reinforcing bars", J. Build. Struct., 26(3), 30-37.
  4. Chen, Z.P., Zhang, X.D. and Su, Y.S. (2005), "Theoretical research on bearing capacity of normal cross section of SRC specialshaped columns", Xi'an Univ. Arch. Tech.: Natural Science, 27(3), 345-350.
  5. Chen, Z.P., Xue, J.Y. and Zhao, H.T. (2007), "Experimental study on seismic behavior of steel reinforced concrete special-shaped columns", J. Build. Struct., 28(3), 53-61.
  6. Chen, Z.P., Xu, J.J. and Xue, J.Y. (2014), "Experimental investigation on hysteretic behaviour of planar and 3D joints in cruciform SRC column frame", J. Build. Struct., 35(8), 80-87.
  7. Chen, Z.P., Xu, J.J. and Chen, Y.L. (2016), "Axial compression ratio limit values for steel reinforced concrete (SRC) special shaped columns", Steel Compos. Struct., Int. J., 20(2), 295-316. https://doi.org/10.12989/scs.2016.20.2.295
  8. Deng, Z.H., Tang, G.X. and Xiang, P. (2010), "Experimental study on seismic behavior of SRC T-shaped column joints under low cyclic reversed loading", Ind. Constr., 40(6), 44-48.
  9. Kamaris, G.S., Vallianatou, Y.M. and Beskos, D.E. (2012), "Seismic damage estimation of in-plane regular steel moment resisting and x-braced frames", Bull. Earthq. Eng., 10(6), 1745-1766. https://doi.org/10.1007/s10518-012-9387-2
  10. Kamaris, G.S., Skalomenos, K.A. and Hatzigeorgiou, G.D. (2016), "Seismic damage estimation of in-plane regular steel/concrete composite moment resisting frames", Eng. Struct.res, 115(5), 67-77. https://doi.org/10.1016/j.engstruct.2016.01.053
  11. Kawakami, M., Tokuda, H. and Kagaya, M. (1985), "Limit states of cracking and ultimate strength of arbitrary concrete sections under biaxial loading", ACI Struct. J., 82(2), 203-212.
  12. Krawinkler, H. and Zohrei, M. (1983), "Cumulative damage in steel structures subjected to earthquake ground motions", Comput. Struct., 16(4), 531-591. https://doi.org/10.1016/0045-7949(83)90193-1
  13. Kumar, S. and Usami, T. (1996), "Damage evaluation of damage in steel box columns by cyclic loading tests", J. Struct. Eng., ASCE, 122(6), 626-634. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:6(626)
  14. Landi, L., Conti, F. and Diotallevi, P.P. (2015), "Effectiveness of different distributions of viscous damping coefficients for the seismic retrofit of regular and irregular RC frames", Eng. Struct., 100(10), 79-93. https://doi.org/10.1016/j.engstruct.2015.05.031
  15. Li, Y.X. and Zhao, S.C. (1994), "Model of cumulative damage in RC and SRC members", J. Southwest Jiao-Tong Univ., 29(4), 412-417.
  16. Li, Z., Zhang, X.F. and Guo, Z.Y. (2007), "Experimental study on the mechanical property of steel reinforced concrete short columns of T-shaped cross-section", China Civil Eng. J., 40(1), 1-5.
  17. Liu, Z.Q., Xue, J.Y. and Zhao, H.T. (2014), "Cyclic test for solid steel reinforced concrete frames with special-shaped columns", Earthq. Struct., Int. J., 7(3), 317-331. https://doi.org/10.12989/eas.2014.7.3.317
  18. Mehanny, S.S. and Deierlein, G.G. (2001), "Seismic damage and collapse assessment composite moment frames", J. Struct. Eng., ASCE, 127(9), 1045-1053. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:9(1045)
  19. Park, Y.J. and Ang, A.H.S. (1985a), "Mechanistic seismic damage model for reinforced concrete", J. Struct. Eng., ASCE, 111(4), 722-739. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(722)
  20. Park, Y.J. and Ang, A.H.S. (1985b), "Seismic damage analysis of reinforced concrete buildings", J. Struct. Eng., ASCE, 111(4), 740-757. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(740)
  21. Ramamurthy, L.N. and Khan, T.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)
  22. Shen, Z.Y., Dong, B. and Cao, W.X. (1997), "Development and evaluation of researches on damage accumulation analysis for building structures", J. Tong-Ji Univ., 25(2), 135-140.
  23. Shin, J., Kim, J. and Lee, K. (2014), "Seismic assessment of damaged piloti-type RC building subjected to successive earthquakes", Earthq. Eng. Struct. Dyn., 43(11), 1603-1619. https://doi.org/10.1002/eqe.2412
  24. Sinha, S.N. (1996), "Design of cross (+) section of column", Ind. Concrete J., 70(3), 153-162.
  25. Song, H.J., Su, Y.S. and Luo, Y.F. (2007), "Loading-bearing capacity of normal cross section of SRC L-shaped columns", J. Tongji Univ. (Natural Science), 35(12), 1597-1601.
  26. Tokgoz, S. and Dundar, C. (2012), "Tests of eccentrically loaded L-shaped 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
  27. Wang, T.C., Zhang, X.H. and Zhao, H.L. (2010), "Experimental research on seismic behavior of exterior joints with specially shaped columns reinforced by fiber", Ind. Constr., 40(1), 46-50.
  28. Xiao, J.Z., Huang, J. and Zhang, J.R. (2002), "Experimental study on seismic behavior of HPC side frame structure with speciallyshaped columns", J. Build. Struct., 23(6), 19-25.
  29. Xue, J.Y., Liu, Y. and Zhao, H.T. (2009), "Experimental study on seismic behavior of steel reinforced concrete special-shaped column-beam joints", J. Build. Struct., 30(4), 69-77.
  30. Xue, J.Y., Liu. Y. and Chen, Z.P. (2011), "Experimental study of the bearing capacity of steel reinforced concrete speciallyshaped column-beam joint", China Civil Eng. J., 44(5), 41-48.
  31. Xue, J.Y., Chen, Z.P. and Zhao, H.T. (2012), "Shear mechanism and bearing capacity calculation on steel reinforced concrete special-shaped columns", Steel Compos. Struct., Int. J., 13(5), 473-487. https://doi.org/10.12989/scs.2012.13.5.473
  32. Xue, J.Y., Gao, L. and Liu, Z.Q. (2014), "Experimental study on mechanical performances of lattice steel reinforced concrete inner frame with irregular section columns", Steel Compos. Struct., Int. J., 16(3), 253-267. https://doi.org/10.12989/scs.2014.16.3.253
  33. Xu, Y.F., Song, B.F. and Li, G. (2007), "Testing of axial pressure bearing capacity of cross-shaped steel reinforced concrete columns", J. Shenyang Jianzhu Univ. (Natural Science), 23(6), 910-914.
  34. Xu, Y.F., Diao, X.Z. and Guo, J. (2009), "Experimental study on the biaxial eccentric pressure bearing capacity of cross-shaped steel reinforced concrete columns", J. Shenyang Jianzhu Univ. (Natural Science), 25(1), 100-105.
  35. Yang, T., Zhang, X.D. and Zhong, H.N. (2015), "Pseudo-dynamic test on seismic behaviour of frame with T-shaped SRC columns", J. Central South Univ. (Science and Technology), 46(6), 2171-2177.
  36. Yuan, F.Y. (2008), "Loss assessment of Wen chuan earthquake", J. Earthq. Eng. Eng. Vib., 28(5), 10-19.