Comparative Study between Linear-Interpolation and Stress-Block Methods of Composite Design Using Cold-Formed Steel Section

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    For decades, Hot Rolled Steel (HRS) section was in use in construction of buildings and bridges. The simple reason is that the use of HRS section in composite systems is well established by standard rules and their design necessities as provided in the codes. In this paper, the use of doubly oriented back-to-back Cold-Formed Steel (CFS) section coupled with bolted shear connectors in composite floor system was demonstrated. The bolted system of shear connector provides an alternative to headed stud shear connector with CFS section as welding of the stud connector is practically not feasible on CFS section because of its thinness nature. The loading system used was four-point bending test to determine the flexural strength capabilities of the composite floor system. The resulting composite floor system has proven to provide adequate strength and stiffness properties under the applied loads. The results have shown that the theoretical value of flexural capacities calculated agrees reasonably well with the experimental values. In conclusion, the composite floor system can be used in small and medium size buildings, as well as in light weight construction industries.



  • Keywords

    Cold-formed steel section; linear-interpolation method; stress-block method; composite design; composite floor system

  • References

      [1] Pavlovic, M., Spremic, M., Markovic, Z., Budevac, D. & Veljkovic, M., “Recent research of shear connection in prefabricated steel-concrete composite beams”, Istrazivanja i projektovanja za privredu, Vol.12, (2014), pp:75-80.

      [2] Kim, B., Howard, D. W. & Cairns, R., “The behaviour of through deck welded shear connectors: an experimental and numerical study”, Journal of Constructional Steel Research, Vol.57, (2001), pp:1359-1380.

      [3] Prakash, A., Anandavalli, N., K. Madheswaran, C. & Lakshmanan, N., “Modified Push-out Tests for Determining Shear Strength and Stiffness of HSS Stud Connector-Experimental Study”, International Journal of Composite Materials, Vol.2,No.3, (2012), pp:22-31.

      [4] Pallarés, L., & Hajjar, J. F., “Headed steel stud anchors in composite structures, Part I: Shear”, Journal of Constructional Steel Research, Vol.66, No. 2, (2010), pp:198-212.

      [5] Eurocode 4, EN1994., “Design of composite steel and concrete structures- Part 1-1”, General rules and rules for buildings. European Committee for Standardization, Brussels, (2004).

      [6] Ollgaard, J. G., Slutter, R. G., & Fisher, J. W., “Shear strength of stud connectors in lightweight and normal weight concrete”, AISC Engineering Journal, Vol.1 No.1, (1971).

      [7] Lakkavalli, B. S. & Liu, Y., “Experimental study of composite cold-formed steel C-section floor joists”, Journal of Constructional Steel Research, Vol.62, No.10, (2006), pp: 995-1006.

      [8] Lam, D., “Capacities of headed stud shear connectors in composite steel beams with precast hollowcore slabs”, Journal of Constructional Steel Research, Vol.63, No.9, (2007), pp:1160-1174.

      [9] Smith, A. L., & Couchman, G. H., “Strength and ductility of headed stud shear connectors in profiled steel sheeting”, Journal of Constructional Steel Research, Vol.66, No.6, (2010), pp:748-754.

      [10] Kwon, G., Engelhardt, M. D. & Klingner, R. E., “Behavior of post-installed shear connectors under static and fatigue loading”, Journal of Constructional Steel Research, Vol.66, No.4, (2010), pp:532-541.

      [11] Irwan, J. M., Hanizah, A. H., Azmi, I., & Koh, H. B., “Large-scale test of symmetric Cold-Formed Steel (CFS) – concrete composite beams with BTTST enhancement”, Journal of Constructional Steel Research, Vol.67, (2011), pp:720-726.

      [12] Pavlović, M., Marković, Z., Veljković, M. & Buđevac, D., “Bolted shear connectors vs. headed studs behaviour in push-out tests”, Journal of Constructional Steel Research, Vol.88, (2013), pp:134-149.

      [13] Bamaga, S. O. & Tahir, M. M., “Towards Light-Weight Composite Construction: Innovative Shear Connector for Composite Beams”, Applied Mechanics and Materials, Vol.351-352), (2013), pp: 427-433.

      [14] Alenezi, K., Talal, A., Tahir, M. M., Mohamed Ragaee, Badr K., & Bamaga S. O., “Strengthen of Cold-Formed Steel Column with Ferrocement Jacket: Push out Tests” International Journal of Civil, Architectural Science and Engineering, Vol.7, No.11, (2013), pp:262-272.

      [15] Lawan, M. M., Tahir, M. M., & Mirza, J., “Bolted Shear Connectors Performance in Self-Compacting Concrete Integrated with Cold-Formed Steel Section”, Latin American Journal of Solids and Structures, Vol.13, (2016), pp:731-749.




Article ID: 15270
DOI: 10.14419/ijet.v7i3.9.15270

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.