Advances in concrete construction

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Simple P-I diagram for structural components based on support rotation angle criteria

  • Kee, Jung Hun (Department of Safety Engineering, Seoul National University of Science and Technology) ;
  • Park, Jong Yil (Department of Safety Engineering, Seoul National University of Science and Technology)
  • Received : 2020.09.02
  • Accepted : 2020.10.21
  • Published : 2020.12.25
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Abstract

In the preliminary design phase of explosion-proof structures, the use of P-I diagram is useful. Based on the fact that the deformation criteria at failure or heavy damage is significantly larger than the yield deformation, a closed form solution of normalized P-I diagram is proposed using the complete plastic resistance curve. When actual sizes and material properties of RC structural component are considered, the complete plasticity assumption shows only a maximum error of 6% in terms of strain energy, and a maximum difference of 9% of the amount of explosives in CWSD. Thru comparison with four field test results, the same damage pattern was predicted in all four specimens.

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References

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