Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31584
Structural Reliability of Existing Structures: A Case Study

Authors: Z. Sakka, I. Assakkaf, T. Al-Yaqoub, J. Parol


reliability-based methodology for the assessment and evaluation of reinforced concrete (R/C) structural elements of concrete structures is presented herein. The results of the reliability analysis and assessment for R/C structural elements were verified by the results obtained through deterministic methods. The outcomes of the reliability-based analysis were compared against currently adopted safety limits that are incorporated in the reliability indices β’s, according to international standards and codes. The methodology is based on probabilistic analysis using reliability concepts and statistics of the main random variables that are relevant to the subject matter, and for which they are to be used in the performance-function equation(s) associated with the structural elements under study. These methodology techniques can result in reliability index β, which is commonly known as the reliability index or reliability measure value that can be utilized to assess and evaluate the safety, human risk, and functionality of the structural component. Also, these methods can result in revised partial safety factor values for certain target reliability indices that can be used for the purpose of redesigning the R/C elements of the building and in which they could assist in considering some other remedial actions to improve the safety and functionality of the member.

Keywords: Concrete Structures, FORM, Monte Carlo Simulation, Structural Reliability.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2836


[1] B. M. Ayyub, I. Assakkaf, K. Atua, A. Engle, P. Hess, Z. Karaszewski, D. Kihl, W. Melton, R. A. Sielski, M. Sieve, J. Waldman, and G. J. White, “Reliability-based design of ship structures: Current practice and emerging technologies,” Research Report to the US Coast Guard, SNAME, T & R Report R-53, 1998.
[2] I. A. Assakkaf, “Reliability design of double plates for sea tankers” Proc. International Conference on Civil Engineering and Building Materials (CEBM), 2012.
[3] A. H-S. Ang and W. H. Tang, Probability Concepts in Engineering Planning and Design, Volume 2, Decision, Risk and Reliability. New York: John Wiley and Sons, 1983.
[4] B. M. Ayyub and R. H. McCune, “Probability, Statistics and Reliability for Engineers and Scientists.” Florida: Chapman and Hall/CRC Press LLC, 2003.
[5] B. Ellingwood, T. V. Galambos, J. G. McGregor, C. A. Cornell, “Development of a Probability Based Load Criterion for American National Standard A58,” NBS Special Report 577, U.S. Department of Commerce, National Bureau of Standards, location? 1980.
[6] American Concrete Institute, Building Code Requirements for Structural Concrete ACI 318-11. Farmington Hills, Michigan: American Concrete Institute, 2011.
[7] A. S. Nowak, A. M. Rakoczy, and E. K. Szeliga, “Revised Statistical Resistance Models for R/C Structural Components,” ACI SP-284-6, vol. 284, 2012, pp. 1-16
[8] American Society of Civil Engineers, Minimum Design Loads for Buildings and Other Structures, SEI/ASCE 7-10, Reston, VA, 2010.
[9] B. Ellingwood, “Impact of Structural aging on seismic risk assessment of reinforced concrete structures in nuclear power plants.” SuDoc Y 3.N 88:25/6425, 1996.
[10] J. Wight and J. MacGregor, Reinforced Concrete – Mechanics & Design, 6th ed, Pearson, 2011.
[11] M. M. Szerszen, A. Szwed, and A. S. Nowak, “Reliability analysis for eccentrically loaded columns”, ACI Structural Journal, vol. 102, No. 5, pp. 676-688, 2005.
[12] A. S. Nowak, M. M. Szerszen, “Calibration of design code for buildings (ACI 318): Part 1 & 2,” ACI Structural Journal, V.100, No.3, pp.377- 382, May 2003.
[13] I. A. Assakkaf, 2004 “ENCE 454 Lecture Notes – Design of concrete structures” Department of Civil and Environmental Engineering, University of Maryland, College Park, 2004.