Anti-explosionperformancesofsquarereinforcedconcreteslabs

underclose-inexplosions

WANG Wei; ZHANG Duo; LU Fang-yun; TANG Fu-jing; WANG Song-chuan

doi:10.11883/1001-1455(2012)03-0251-08

Volume 32 Issue 3

May 2014

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Article Navigation > Explosion And Shock Waves > 2012 > 32(3): 251-258

WANG Wei, ZHANG Duo, LU Fang-yun, TANG Fu-jing, WANG Song-chuan. Anti-explosionperformancesofsquarereinforcedconcreteslabsunderclose-inexplosions[J]. Explosion And Shock Waves, 2012, 32(3): 251-258. doi: 10.11883/1001-1455(2012)03-0251-08

Citation:

WANG Wei, ZHANG Duo, LU Fang-yun, TANG Fu-jing, WANG Song-chuan. Anti-explosionperformancesofsquarereinforcedconcreteslabs underclose-inexplosions[J]. Explosion And Shock Waves, 2012, 32(3): 251-258. doi: 10.11883/1001-1455(2012)03-0251-08

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Anti-explosionperformancesofsquarereinforcedconcreteslabs underclose-inexplosions

doi: 10.11883/1001-1455(2012)03-0251-08

1.
InstituteofTechnicalPhysics,CollegeofScience,NationalUniversityofDefenseTechnology,

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Corresponding author: WANG Wei
Publish Date: 2012-05-25

Abstract

Abstract

Toidentifytheanti-explosionperformancesofreinforcedconcrete(RC)slabs,close-inexplosionexperimentswereconductedforsquareRCslabssupportedunidirectionally, inwhichtheRC slabswereloadedbyTNTcharges.BasedonthecommercialhydrocodeAUTODYN,athree-dimensionalsolidmodelincludingexplosive, airandRCslabwithconcreteandreinforcingbarsbeingseparatedwasdevelopedbyusingthegas- solidcoupledtechniquetosimulatethedynamicresponseofthe RCslabs.Inthenumericalsimulation,thestrainrateeffectsweretakenintoaccountonthedynamicalconstitutivebehaviorsofthesophisticatedconcreteandreinforcingbarmaterial .Sequentially,the correspondingdamagemechanismsandfailuremodesoftheRCslabswereanalyzedunderdifferent TNTchargeweights.ThedynamicalevolutionprocessofRCslabswasobservedrealisticallyfrom crackingandbreaking-upoftheconcrete,yieldingandrupturingofreinforcingbarstolocalperforation. ThedamageoftheRCslabsbythenumericalsimulationisingoodagreementwiththeexperimentalresults. AndwiththeincreaseoftheTNTchargeweights,thefailuremodeofRCslabsgraduallychangesfromoverallflexurefailuretolocalpunchingfailure
- mechanicsofexplosion,
- anti-explosionperformances,
- explosionload,
- reinforcedconcrete slab,
- damagemode