Behaviuor of Prestressed Concrete Bridge Under Blast Loading

Document Type : Original Article

Abstract

Increasing terrorist attacks to substructure and transport structures is an alarm for national security. In the past designing structures against the explosive loads were only limited to       military buildings and buildings related to atomic activities. Bridges are important elements in transport systems. The vital rule of bridges and national importance of them makes the bridges a good target as a terrorist attack. Better design of these structures under explosive load to prevent growing collapse is of great importance. Prestressed concrete bridges are very popular however; there is lack of information and study about these bridges under the explosive load.
In this research a finite element model for concrete bridges with prestressed elements has been established by ABAQUS software. A validation has been carried out by laboratory test of other researchers and acceptable convergence was observed.
Established models were placed on the width of bridge deck under different explosive    scenarios by different weight of explosive materials. Collapse process of bridge has been       observed and the destruction mechanism has also been investigated. Results of this study give us some information about behavior and possible response of pre prepared bridges under the severe explosive load which can help the engineers to select the most effective way of operation improvement and retrofitting of these bridges.
 

Keywords

References

1. T. Rabczuk and J. Eibl, “Modelling dynamic failure of concrete with meshfree methods,” Int. J. Impact Eng., 32:1878e97, 2006.##
2.  K. Xu and Y. Lu, “Numerical simulation study of spallation in reinforced concrete plates subjected to blast loading,” Comput. Struct., 84:431e8, 2006.##
3.  E. B. Williamson and D. G. Winget, “Risk Management and Design of Critical Bridges for Terrorist Attacks,” Journal of Bridge Engineering, vol. 10, no. 1, pp. 96-106, 2005.##
4.  D. G. Winget, K. A. Marchand, and E. B. Williamson, “Analysis and Design of Critical Bridges Subjected to Blast Loads,” Journal of Structural Engineering, vol. 131, no. 8, pp.      1243-1255, 2005.##
5.  J. Magnusson and M. Hallgren, “Reinforced High Strength Concrete Beams Subjected to Air Blast Loading,” Structures Under Shock and Impact VIII, edited by N. Jones and C. A. Brebbia,     Computational Mechanics Inc., Billerica, Ma., pp. 53-62, 2004.##
6. J .Li and H. Hao, “Influence of brittle shear damage on accuracy of the two-step method in prediction of structural response to blast loads,” Int. J. Impact Eng., 54:217e31, 2013.##
7. J. Li and H. Hao, “Numerical study of structural progressive collapse using substructure technique,” Eng. Struct., 52:101e13, 2013.##
8. K. Bi and H. Hao, “Numerical simulation of pounding damage to bridge structures under    spatially varying ground motions,” Eng. Struct., 46:62e76, 2013.##
9. C. F. Zhao and J. Y. Chen, “Damage mechanism and mode of square reinforced concrete slab     subjected to blast loading,” Theor. Appl. Fract. Mech., 63e 64:54e62, 2013.##
10. J. Baylot, J. Roy, and J. Hall, “Prediction Method for Response of Steel Bridge Beams and Girders to Blast and Fragment Load,” Transportation       Research Record, 2002.##
11.  ABAQUS, “User’s Manual,” Version 6.12, 2013.##
12.  ABAQUS, “Theory Manual,” 2013.##
13. J. Lubliner, J. Oliver and E. Onate, “A Plastic Damage Model for Concrete,” Internat. J. Solids Structures, vol. 25, pp. 299-329, 1989.##
14. M. B. Lu, “Application of Displacement-Based Design Method to Blast-Resistant Reinforced  Concrete Structures,” Ph. D. Thesis, University of Missouri-Rolla, Rolla, MO, 2005.##
 

Files

History

  • Receive Date: 20 August 2014
  • Revise Date: 04 January 2021
  • Accept Date: 19 September 2018

Share

How to cite

Statistics