Failure Probabilities of FRP Strengthened RC Column to Blast Loads
DOI:
https://doi.org/10.11113/jt.v65.2202Keywords:
Failure probabilities, RC column, blast, scale distance factors, FRP, empirical formulaeAbstract
Probability analysis is commonly used to estimate the structural damage subjected to the static loads as well as dynamic loads such as earthquakes, wind and blast loads. Blast loads is difficult to predict accurately due to the parameters that influence the uncertainty in the blast shock wave propagation and shock wave-structures interaction. However, probability analysis of the structural damage can be carried out by considering all the blast load parameters and the structural properties. Instead, scale distance factors (producing various pressures and impulses) also affect the uncertainty of variations in structure damage to blast load and analysis of blast-resistant design. This study presents a reliability analysis of unstrengthened and FRP strengthened RC columns to blast loads. Three different parameter examples of unstrengthened reinforced concrete (RC) columns and Fibre Reinforced Polymer (FRP) strengthened RC column are used. The failure probabilities of RC columns under different level blast load corresponding to different range of scaled distances are estimated and presented. The results indicate reliability analysis gives range of scaled distances with different probabilities of column collapse.
References
Mutalib, A. A. and Hao, H. 2010. Development of P-I diagrams for FRP strengthened RC columns. International Journal of Impact Engineering. 38: 290–304.
ISIS-Canada. 2003. ISIS Educational Module 2: An Introduction to FRP Composites for Construction. ISIS Canada.
Buchan, P. A. and Chen J. F. 20074. Blast Resistance of FRP Composites and Polymer Strengthened Concrete and Masonry Structures–A state of the Art review. Composites Part B: Engineering.. 38: 509–522.
Hao, H., Stewart, M. G., Li, Z. X., and Shi, Y. 2010. RC Column Failure Probabilities to Blast Loads. International Journal of Protective Structure. 1(4): 571–591.
Low, H. Y., and Hao. H. 2002. Reliability Analysis Of Direct Shear And Flexural Failure Modes of RC Slabs Under Explosive Loading. International Journal of Engineering Structures. 24: 189–198.
Stewart, M. G. and Netherton M. D. 2005. Blast Reliability Curves and Uncertainty Modelling for Glazing Subject to Explosive Blast Loading. Sixth Asian-Pacific Conference on Shock and Impact Loads on Structures, Perth Australia. 523–530.
Stewart, M.G. 2006. Risk Assessment and Optimisation of Blast Mitigation Strategies for Design and Strengthening of Built Infrastructure. Transaction of Tianjin University. 8–15.
Stewart, M. G. 2010. Acceptable Risk Criteria for Infrastructure Protection. International Journal of Protective Structures. 1(1): 23–40.
Shope, R. L. 2007. Comparisons of an Alternative Pressure-Impulse (P-I) Formulation with Experimental and Finite Element Results. The International Symposium on the Effects of Munitions with Structures (ISIEMS) 12.1.
Ma, G. W., Shi H. J., and Shu D. W. 2007. P-I Diagram Method for Combined Failure Modes of Rigid-Plastic Beams. International Journal of Impact Engineering. 34: 1081–1094.
Shi, Y., Hao, H., Li, Z.X. 2008. Numerical Derivation of Pressure-Impulse Diagrams for Prediction of RC Column Damage to Blast Loads. International Journal of Impact Engineering. 35: 1213–1227.
MacGregor, J. G. G. 1996. Reinforced Concrete: Mechanics and Design: Professional Technical Reference, Englewood Cliffs, NJ, Prentice Hall.
Ayyub B. M., and Assakaf I. A. 2000. Reliability-based Structural Design, 14 June 2010. Ship Structures for the New Millennium: Supporting Quality in Shipbuilding Symposium.
Hasofer, A. M. and Lind N. C. 1974. Exact and Invariant Second Moment Code Format. Journal of Engineering Mechanics, ASCE. 100(EM1): 111–121.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
