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Investigating the factor of safety for the design of columns using properties of steel rebar’s manufactured in Pakistan

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Języki publikacji
EN
Abstrakty
EN
This paper includes the behaviour of RC column, using the steel strength data employed by Rafi et al. (2014). Eccentric short columns are studied for this purpose, both tension and compression controlled sections, are analysed considering the current design practice of Pakistan. Three cross sections were analysed using different steel percentages against load-moment interaction and the strength analyses. Concrete strength is also varied in this analysis. The load moment interaction diagrams were observed in major and minor axes and strength analysis is made for compression controlled and tension controlled sections. In this analysis it is observed that a section designed as a tension controlled is giving brittle failure at certain limit which should be avoided. Considering this scenario, several random cross sections are analysed, strength reduction factors for eccentric and pure axial columns are computed. Conclusions are made on behalf of this analysis for different types of column design.
Rocznik
Strony
61--78
Opis fizyczny
Bibliogr. 18 poz., il., tab.
Twórcy
  • NED University of Engineering & Technology, Department of Civil Engineering, Karachi, Pakistan
  • Sir Syed University of Engineering & Technology, Faculty of Civil Engineering, Karachi, Pakistan
  • Sir Syed University of Engineering & Technology, Faculty of Civil Engineering, Karachi, Pakistan
Bibliografia
  • [1] Lodi, S. H., and Masroor, S. A. (1994). “Comparative evaluation of reinforcing bars produced in Pakistan.” NED University Journal of Research, 1(2), 35-47.
  • [2] Al-Negheimish, A. I., and Al-Zaid, R. Z. (2004). “Effect of manufacturing process and rusting on the bond behavior of deformed bars in concrete.” Cement and Concrete Composites, 26(6), 735-742.
  • [3] Rafi M.M., Lodi S.H., Nizam A. (2014). “Chemical and mechanical properties of steel rebar’s manufactured in Pakistan and design implications.” Journal of materials in civil engineering, ASCE 2014: 26(2): 338-348
  • [4] Hassoun, M. N., and Al-Manaseer, A. (2008). Structural Concrete-Theory and Design, John Wiley & Sons, Inc. USA.
  • [5] American Concrete Institute (ACI). (2011). Building code requirements for structural concrete (ACI 318R-11), ACI Committee 318, Detroit, Michigan.
  • [6] MacGregor, J. G. (1976). “Safety and limit states design for reinforced concrete.” Canadian Journal of Civil Engineering, 3(4), 484-513
  • [7] Bloem, D. L. (1968). “Concrete strength in structures.” Proceedings of. American Concrete Institute, 65, pp 176-187
  • [8] FIORATO, A. E. (1973). “Geometric imperfections in concrete structures.” Statens Institut for byggnadsforskning, Stockholm, Sweden, 219p.
  • [9] Allen, D. E. (1972). “Statistical study of mechanical properties of Reinforcing bars.” Build. Research Note No. 85, Nat. Research Council Canada, Ottawa, Canada
  • [10] Mattock, A. H., Kriz, L. B., and Hognestad, E. (1961). “Rectengular concrete stress distribution in ultimate strength design.” Proceedings of American Concrete Institute, 57, 875-928.
  • [11] Lind, N. C. (1971). “Consistent partial safety factors.” Proceedings of ASCE, 97 (ST6), 1651-1670.
  • [12] Kankam, C. K. (2004). “Bond strength of reinforcing steel bars milled from scrap metals.” Materials and Design, 25(3), 231-238.
  • [13] Rafi, M. M., and Siddiqui, S. H. (2010). “Study of variations of execution methods from standard specifications – A local perspective.” Second International Conference on Construction in Developing Countries (ICCIDC–II) “Advancing and Integrating Construction Education, Research & Practice”, Cairo, Egypt, 326-336
  • [14] Szota, P. (2008). “Numerical analysis of the 45 mm reinforcement bar rolling process.” Journal of Achievements in Materials and Manufacturing Engineering, 28(1), 67-70.
  • [15] Cornell, C. A. (1969). “A probability based structural code.” Proceedings of American Concrete Institute, 66(12), 974-985
  • [16] Daewon Seo, Sungwoo Shin & Byumseok Han. (2010). “Reliability based structural safety evaluation of reinforced concrete members.” Journal of Asian Architecture and Building Engineering, 9(2), 471-478
  • [17] Issac Elishakoff. (2001). “Interrelation between safety factors and reliability.” NASA/CR-2001-211309, Florida Atlantic University, USA
  • [18] Jianye Ching. (2009). “Equivalence between Reliability and factor of safety.” Probabilistic Engineering Mechanics, 24(2), 159-171
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-071b54d5-b3b1-487e-863e-34777305d769
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