Decision making for stable inspection planning of deteriorating structures based on constraint reliability and uncertainties

  • Authors

    • Jalal alsarraf Assitance Prof Automotive and marine engineering department at PAAET
    • S.A.M. Swilem Assitance Prof Automotive and marine engineering department at PAAET
    • khaled alawadhi Assitance Prof Automotive and marine engineering department at PAAET
    2014-09-06
    https://doi.org/10.14419/ijet.v3i3.3042
  • Life-time cost minimization is considered as the optimal criterion for planning of inspection, repair and maintenance of structures. However, most of the probabilities and the cost items related to the cost analysis generally contain inevitable uncertainties in actual cases. The appropriateness of inspection planning may be lost by several errors induced by such uncertainties. In this study, a cost minimization method with the constraint of reliability is developed in order to obtain stable inspection planning against the estimation errors of the parameters. In the analysis, the life-time cost optimization is carried out under the constraint that the failure probabilities of the members are controlled below the respective target values allowed for the members. First, initial target failure probabilities are assumed for each member. Then, the robustness of the inspection planning is investigated by adjusting the parameters within the range of uncertainties. The initial values of the target failure probabilities are altered until an acceptable result is obtained. The applicability of the proposed method is examined for a structure with several uncertain parameters. A sequential cost minimization method is employed to optimize the life-time cost. It is made clear that by using this approach, the stability of the life-time cost is maintained without losing the benefit of the cost minimization method.

    Keywords: Crack, Fatigue, Inspection, Numerical Model, Reliability, Structure.

  • References

    1. S.A.M. Swilem, Study on Inspection Strategy of Fatigue Deteriorating Structures, A thesis submitted for the degree of Doctor of Engineering, Hiroshima University, Japan, June, 1992.
    2. S.A.M. Swilem, Y. Fujimoto, M. Iwata, K. Nagai, Inspection Planning for Deteriorating Structures Based on Sequential Cost Minimization Method, Journal of Society of Naval Architects of Japan 170 (1991) 755.
    3. Y. Fujimoto, S.A.M. Swilem, Improvement of Fatigue Design and Inspection Maintenance for Structures Based on Life-Time Cost Optimization, Trans. of West-Japan Society of Naval Architects (in Japanese) 83 (1992) 215-225.
    4. M. Sanchez, G. Klutke, D. Rosowsky, Life-cycle performance of structures subject to multi deterioration mechanisms, Journal of Structural Safety 33 (2011) 206-217. http://dx.doi.org/10.1016/j.strusafe.2011.03.003.
    5. E. Arteaga, P. Bressolette, A. Chateauneuf, M. Sanchez, Probabilistic lifetime assessment of RC structures under coupled corrosion-fatigue deterioration processes, Journal of Structural Safety 31 (2009) 84-96. http://dx.doi.org/10.1016/j.strusafe.2008.04.001.
    6. Kwang-Min Lee, Hyo-Nam Cho, Young-min Choi, Life-cycle cost-effective optimum design of steel bridges, Journal of Constructional Steel Research 60 (2004) 1585-1613. http://dx.doi.org/10.1016/j.jcsr.2003.10.009.
    7. P.J.E. Sullivan, A probabilistic method of testing for the assessment of deterioration and explosive spalling of high strength concrete beams in flexure at high temperature, Journal of Cement & Concrete Composites 26 (2004) 155-162. http://dx.doi.org/10.1016/S0958-9465(03)00088-X.
    8. H-L. Lv, C-M. Zhao, L. Song, Y. Ma, C-H. Xu, Damage and deterioration mechanism and curing technique of concrete structure in main coal cleaning plants, Journal of Mining Science and Technology 19 (2009) 0750-0755.
    9. S. Wei, M. Sanchez, D. Trejo, C. Gillis, Microbial mediated deterioration of reinforced concrete structures, International Bio-deterioration & Biodegradation 64 (2010) 748-754. http://dx.doi.org/10.1016/j.ibiod.2010.09.001.
    10. R. Nicolai, R. Dekker, J. Noortwijk, A comparison of models for measurable deterioration: an application to coating on steel structures, Journal of Reliability Engineering & System Safety 92 (2007) 1635-1650. http://dx.doi.org/10.1016/j.ress.2006.09.021.
    11. P.C. Bamu, A. Zingoni, Damage deterioration and the long-term structural performance of Cooling-tower shells: A survey of developments over the past 50 years, Structural Engineering Journal 27 (2005) 1794-1800. http://dx.doi.org/10.1016/j.engstruct.2005.04.020.
  • Downloads

  • How to Cite

    alsarraf, J., Swilem, S., & alawadhi, khaled. (2014). Decision making for stable inspection planning of deteriorating structures based on constraint reliability and uncertainties. International Journal of Engineering & Technology, 3(3), 409-425. https://doi.org/10.14419/ijet.v3i3.3042