DOI QR코드

DOI QR Code

Mechanics based analytical approaches to predict nonlinear behaviour of LSCC beams

  • Thirumalaiselvi, A. (Academy of Scientific and Innovative Research, CSIR-Structural Engineering Research Centre, CSIR Campus) ;
  • Anandavalli, N. (Academy of Scientific and Innovative Research, CSIR-Structural Engineering Research Centre, CSIR Campus) ;
  • Rajasankar, J. (Academy of Scientific and Innovative Research, CSIR-Structural Engineering Research Centre, CSIR Campus)
  • 투고 : 2017.03.05
  • 심사 : 2017.07.14
  • 발행 : 2017.11.10

초록

This paper presents the details of analytical studies carried out towards the prediction of flexural capacity and load-deflection behaviour of Laced Steel-Concrete Composite (LSCC) beams. Analytical expressions for flexural capacity of the beams are derived in accordance with the basic principles of conventional Reinforced Concrete (RC) beams, but incorporated with relevant modifications to account for the composite nature of the cross-section. The ultimate flexural capacity of the two LSCC beams predicted using the derived expressions is found to be approximately 20% lower than those obtained due to measurement from experiments. Further to these, two simple methods are also proposed on the basis of unit load method and equivalent steel beam method to determine the non-linear load-deflection response of the LSCC beams for monotonic loading. Upon validation of the proposed methods by comparing the predicted responses with those of experiments and finite element analysis, it is found that the methods are useful to find nonlinear response of such composite beams.

키워드

참고문헌

  1. Anandavalli, N. (2012), "Experimental and analytical studies on laced reinforced concrete and laced steel-concrete composite elements", Ph.D. Thesis, Anna University, Chennai.
  2. Anandavalli, N., Lakshmanan, N., Knight, G.S., Iyer, N.R. and Rajasankar, J. (2012), "Performance of Laced Steel-Concrete Composite (LSCC) beams under monotonic loading", Eng. Struct., 41, 177-185. https://doi.org/10.1016/j.engstruct.2012.03.033
  3. Anandavalli, N., Lakshmanan, N., Jayaraman, R. and Thandavamoorthy, T.S. (2005), "Testing and evaluation of full scale beam-column joints of power plant structure", J. Struct. Eng. (JoSE), 32(1), 1-9.
  4. Attard, M. and Setunge, S. (1994), "The stress-strain relationship of confined and unconfined normal and high strength concretes", ACI Mater. J., 93(5), 432-442.
  5. IS 456 (2000), Indian Standard Code of Practice for plain and reinforced concrete, Bureau of Indian Standards, New Delhi.
  6. Kwon Gun Up. (2008), "Strengthening existing steel bridge girders by the use of post-installed shear connectors", Ph.D. Thesis, The University of Texas, Austin.
  7. Liew, J.R. and Sohel, K.M.A. (2009), "Lightweight steel-concretesteel sandwich system with J-hook connectors", Eng. Struct., 31(5), 1166-1178. https://doi.org/10.1016/j.engstruct.2009.01.013
  8. Liew, J.R., Sohel, K.M.A. and Koh, C.G. (2009), "Impact tests on steel-concrete-steel sandwich beams with lightweight concrete core", Eng. Struct., 31(9), 2045-2059. https://doi.org/10.1016/j.engstruct.2009.03.007
  9. McKinley, B. and Boswell, L.F. (2002), "Behaviour of double skin composite construction", J. Constr. Steel Res., 58(10), 1347-1359. https://doi.org/10.1016/S0143-974X(02)00015-9
  10. Roberts, T.M., Edwards, D.N. and Narayanan, R. (1996), "Testing and analysis of steel-concrete-steel sandwich beams", J. Constr. Steel Res., 38(3), 257-279. https://doi.org/10.1016/0143-974X(96)00022-3
  11. Sohel, K.M.A., Liew, J.R., Yan, J.B., Zhang, M.H. and Chia, K.S. (2012), "Behavior of steel-concrete-steel sandwich structures with lightweight cement composite and novel shear connectors", Compos. Struct., 94(12), 3500-3509. https://doi.org/10.1016/j.compstruct.2012.05.023
  12. Thirumalaiselvi, A., Anandavalli, N., Rajasankar, J. and Iyer, N.R. (2016), "Numerical evaluation of deformation capacity of laced steel-concrete composite beams under monotonic loading", Steel Compos. Struct., 20(1), 167-184. https://doi.org/10.12989/scs.2016.20.1.167
  13. Vakil, M.D. (2012), "Comparative study of moment carrying capacity of composite deck", J. Inform. Knowled. Res. Eng., 2(1), 60-62.
  14. Xie, M., Foundoukos, N. and Chapman, J.C. (2007), "Static tests on steel-concrete-steel sandwich beams", J. Constr. Steel Res., 63(6), 735-750. https://doi.org/10.1016/j.jcsr.2006.08.001
  15. Zhen-Hai, G. and Xiu-Qin, Z. (1987), "Investigation of complete stress-deformation curves for concrete in tension", Mater. J., 84(4), 278-285.