PARAMETRIC STUDIES OF RC SLABS RETROFITTED WITH FRP TO RESIST AIRBLAST LOADS

【Author】

Deric John Oehlers;

【Abstract】

<正>Current guidelines such as TM5 and ASCE for the design of unretrofitted structural members against airblast loading contain a number of inadequacies when applied to FRP retrofitted structural members.For example,these guidelines do not allow for the change in slope of the resistance function after the retrofitted section begins to yield.This is not a reasonable assumption because there are large gains in strength after the member has begun to yield due to the FRP plates being able to take additional load after the steel reinforcement has yielded.A dynamic response model which allows for both the increase in blast resistance due to plating and for varying strain rates with time as well as along the depth of the member,has already been developed and calibrated.This dynamic response model is used in a parametric study to optimise the retrofitting of reinforced concrete(RC) members subjected to airblast loading by considering retrofitting the tensile face,compressive face and both faces using various quantities and techniques of retrofitting.The effectiveness of the retrofitting methods is discussed.

【Keywords】

Dynamic response;;retrofitted technique;;optimized design;;parametric study

References

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Springer Journals Database

Total: 7 articles

  • [1] American Society of Civil Engineers, Design of blast resis-tant buildings in petrochemical facilities,
  • [2] Structures to Resist the Effect of Accidental Explosions, US Department of the Army,Navy and Air Force Technical ManualTM5-1300,
  • [3] DAY I;GLYNN C;MERRIGAN M, Retrofitting re-inforced concrete members against blast loading usingnear surface mounted FRP, Final Year ResearchProject Report,
  • [4] BIGGS J M, Introduction to structural Dynamics,

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