Earthquakes and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Seismic behavior of steel reinforced concrete (SRC) T-shaped column-beam planar and 3D hybrid joints under cyclic loads

  • Chen, Zongping (College of Civil Engineering and Architecture, Guangxi University) ;
  • Xu, Jinjun (College of Civil Engineering and Architecture, Guangxi University) ;
  • Chen, Yuliang (College of Civil Engineering and Architecture, Guangxi University) ;
  • Xue, Jianyang (College of Civil Engineering and Architecture, Guangxi University)
  • Received : 2014.02.14
  • Accepted : 2014.06.21
  • Published : 2015.03.25
⟨ Previous Next ⟩

Abstract

This paper presents an experimental study of three two-dimensional (2D/planar) steel reinforced concrete (SRC) T-shaped column-RC beam hybrid joints and six 3D SRC T-shaped column-steel beam hybrid joints under low cyclic reversed loads. Considering different categories of steel configuration types in column cross section and horizontal loading angles for the specimens were selected, and a reliable structural testing system for the spatial loading was employed in the tests. The load-displacement curves, carrying capacity, energy dissipation capacity, ductility and deformation characteristics of the test subassemblies were analyzed. Especially, the seismic performance discrepancies between planar hybrid joints and 3D hybrid joints were intensively compared. The failure modes for planar loading and spatial loading observed in the tests showed that the shear-diagonal compressive failure was the dominating failure mode for all the specimens. In addition, the 3D hybrid joints illustrated plumper hysteretic loops for the columns configured with solid-web steel, but a little more pinched hysteretic loops for the columns configured with T-shaped steel or channel-shaped steel, better energy dissipation capacity & ductility, and larger interlayer deformation capacity than those of the planar hybrid joints. Furthermore, it was revealed that the hysteretic loops for the specimens under $45^{\circ}$ loading angle are generally plumper than those for the specimens under $30^{\circ}$ loading angle. Finally, the effects of steel configuration type and loading angle on the seismic damage for the specimens were analyzed by means of the Park-Ang model.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of China

References

  1. Zhou, T., Chen, Z.H. and Liu, H.B. (2012), "Seismic behavior of special shaped column composed of concrete filled steel tubes", J. Construct. Steel Res., 75(8), 131-141. https://doi.org/10.1016/j.jcsr.2012.03.015
  2. Wu, B. and Xu, Y.Y. (2009), "Behavior of axially-and-rotationally restrained concrete columns with '+'-shaped cross section and subjected to fire", Fire Safety J., 44(2), 212-218. https://doi.org/10.1016/j.firesaf.2008.07.003
  3. Xu, Y.Y. and Wu, B. (2009), "Fire resistance of reinforced concrete columns with L-, T-, and +-shaped cross-sections", Fire Safety J., 44(2), 869-880. https://doi.org/10.1016/j.firesaf.2009.04.002
  4. Patton, M.L. and Singh, K.D. (2012), "Numerical modeling of lean duplex stainless steel hollow columns of square, L-, T-, and +-shaped cross sections under pure axial compression", Thin Wall. Struct., 53(4), 1-8. https://doi.org/10.1016/j.tws.2012.01.002
  5. Ramamurthy, L.N. and Hafeez, Khan, T.A. (1983), "L-shaped column design for biaxial eccentricity", J. Struct. Eng., ASCE, 109(8), 1903-1917. https://doi.org/10.1061/(ASCE)0733-9445(1983)109:8(1903)
  6. Marin, J. (1979), "Design aids for L-shaped reinforced concrete columns", ACI J. Proc., 76(11), 1197-1216.
  7. Cheng-Tzu, T.W. (1985), "Biaxially loaded L-shaped reinforced concrete columns", J. Struct. Eng., ASCE, 111(12), 2576-2595. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:12(2576)
  8. Hsu, T.C. (1989), "T-shaped reinforced concrete members under biaxial bending and axial compression", ACI Struct. J., 86(4), 460-468.
  9. Mallikarjuna. and Mahadevappa, P. (1992), "Computer aided analysis of reinforced concrete columns subjected to axial compression and bending-I L-shaped sections", Comput. Struct., 44(5), 1121-1138. https://doi.org/10.1016/0045-7949(92)90333-U
  10. 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
  11. Dundar, C. and Sahin, B. (1993), "Arbitrarily shaped reinforced concrete members subjected to biaxial bending and axial load", Comput. Struct., 49(4), 643-662. https://doi.org/10.1016/0045-7949(93)90069-P
  12. Yau, C.Y., Chan, S.L. and So, A.K.W. (1993), "Biaxial bending design of arbitrarily shaped reinforced concrete columns", ACI Struct. J., 90(3), 269-278.
  13. Sinha, S.N. (1996), "Design of cross (+) section of column", Indi. Concrete J., 70(3), 153-158.
  14. Kang, G.Y. and Gong, C.J. (1997), "Shear properties of T and L-shaped section frame columns under monotonic and horizontal low cyclic loadings", J. Build. Struct., 18(5), 22-31. (in Chinese)
  15. Li, J., Wu, J.Y. and Zhou, D.Y. (2002), "Experimental research on wide flange specially shaped section columns subjected to cyclic loading", J. Build. Struct., 23(1), 9-14. (in Chinese)
  16. Zhao, Y.J., Li, Z.X. and Chen, Y.X. (2004), "Research on limit values of axial compression ratios of specially shaped RC columns in case of 4th aseismic grade", J. Build. Struct., 25(3), 58-62. (in Chinese)
  17. Cao, W.L., Huang, X.M. and Song, W.Y. (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. (in Chinese)
  18. 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., 13(5), 473-487. https://doi.org/10.12989/scs.2012.13.5.473
  19. Zuo, Z.L., Cai, J. and Yang, C. (2012), "Eccentric load behavior of L-shaped CFT stub columns with binding bars", J. Construct. Steel Res., 72(5), 105-118. https://doi.org/10.1016/j.jcsr.2011.11.003
  20. Zuo, Z.L., Cai, J. and Yang, C. (2012), "Axial load behavior of L-shaped CFT stub columns with binding bars", Eng. Struct., 37(4), 88-98. https://doi.org/10.1016/j.engstruct.2011.12.042
  21. Wang, Q.T. and Chang, X. (2013), "Analysis of concrete-filled steel tubular columns with "\T\" shaped cross section (CFTTS)", Steel Compos. Struct., 15(1), 41-55. https://doi.org/10.12989/scs.2013.15.1.41
  22. 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
  23. Li, B. and Kulkarni, S.A. (2010), "Seismic behaviour of reinforced concrete exterior wide beam-column joints", J. Struct. Eng., ASCE, 136(1), 26-36. https://doi.org/10.1061/(ASCE)0733-9445(2010)136:1(26)
  24. Li, B. and Chua, G.H.Y. (2009), "Seismic performance of strengthened reinforced concrete beam-column joints using FRP composites", J. Struct. Eng., ASCE, 135(10), 1177-1190. https://doi.org/10.1061/(ASCE)0733-9445(2009)135:10(1177)
  25. Yap, S.L. and Li, B. (2011), "Experimental investigation of RC exterior beam-column sub-assemblages for progressive collapse", ACI Struct. J., 108(5), 542-552.
  26. Kai, Q. and Li, B. (2012), "Experimental and analytical assessment on RC interior beam-column subassemblages for progressive collapse", J. Perform. Constr. Fac., 26(5), 576-589. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000284
  27. Pham, T.P. and Li, B. (2013), "Seismic behaviour of RC columns with light transverse reinforcement under different loading directions", ACI Struct. J., 110(5), 833-844.
  28. Wu, T., Liu, B.Q. and Xing, G.H. (2010), Seismic behavior of reinforced concrete frame joints with different depth beams, Science Press, Beijing, China.
  29. Nie, J.G., Qin, K. and Cai, C.S. (2008), "Seismic behavior of connections composed of CFSSTCs and steel-concrete composite beams: finite element analysis", J. Constr. Steel Res., 64(6), 680-688. https://doi.org/10.1016/j.jcsr.2007.12.003
  30. GB50011-2010 (2010), Code for seismic design of buildings, China Architecture and Building Press, Beijing, China.
  31. Park, Y.J. and Ang. H.S. (1985), "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)
  32. Liu, Y., Guo, Z.X. and Huang, Q.X. (2010), "Experimental study of damage model for SRC columns", J. Wuhan University of Technology, 32(9), 203-207. (in Chinese)

Cited by

  1. Experimental investigation on joints between steel-reinforced concrete T-shaped column and reinforced concrete beam under bidirectional low-cyclic reversed loading vol.20, pp.3, 2017, https://doi.org/10.1177/1369433216653841
  2. Seismic behavior of steel reinforced concrete (SRC) joints with new-type section steel under cyclic loading vol.19, pp.6, 2015, https://doi.org/10.12989/scs.2015.19.6.1561
  3. Experimental study on shear capacity of SRC joints with different arrangement and sizes of cross-shaped steel in column vol.21, pp.2, 2016, https://doi.org/10.12989/scs.2016.21.2.267
  4. Seismic performances of steel reinforced concrete bridge piers vol.21, pp.3, 2016, https://doi.org/10.12989/scs.2016.21.3.661
  5. Numerical analysis and horizontal bearing capacity of steel reinforced recycled concrete columns vol.22, pp.4, 2016, https://doi.org/10.12989/scs.2016.22.4.797
  6. Mechanical performance of space sandwich joints under bidirectional cyclic loading pp.2048-4011, 2018, https://doi.org/10.1177/1369433218778403
  7. Investigations of different steel layouts on the seismic behavior of transition steel-concrete composite connections vol.8, pp.3, 2015, https://doi.org/10.12989/acc.2019.8.3.173
  8. Seismic Performances of SRC Special-Shaped Columns and RC Beam Joints Under Double-Direction Low-Cyclic Reversed Loading vol.8, pp.None, 2015, https://doi.org/10.3389/fmats.2021.761376
  9. Experimental study on seismic behavior of prefabricated RC frame joints with T-shaped columns vol.233, pp.None, 2021, https://doi.org/10.1016/j.engstruct.2021.111912