Effects of Accidental Explosions on Low Stiffness Pipes Buried in Undrained Clay

Electronic journal of geotechnical engineering

Akinola Johnson Olarewaju¹ 

[1] Civil Engineering Department,School of Engineering, Federal Polytechnic, P.M.B. 50, Ilaro, Ogun State, Nigeria

关键词: Explosion;    Underground;    Surface;    Low Stiffness Pipes;    Response;    Undrained Clay.;   

DOI  :  

来源: Oklahoma State University

【 摘 要 】

Lowstiffnesspipesareflexiblepipeswhichareusedforvariousservicesacrosstheworld.Inthisstudy,duetoaccidentalexplosions,theresponsesofvariouslowstiffnesspipesburiedinundrainedclaysoilwereobserved..Explosionloadparametersfor250kgTNTexplosiveexplodingatlessthan10mawayfromtheburiedlowstiffnesspipesweredeterminedusingUnifiedFacilitiesCriteria(2008).Thesoilandpipematerialpropertieswereconsideredaselastic,homogeneousandisotropic.Materialpropertiesasobtainedfromvariousresearchersandpipemanufacturerswereused.EquationofmotionwassolvedusingtimeintegrationtechniqueinABAQUS/Explicit,afiniteelementnumericalcode.Fromtheresultsofthisstudy,displacementofburiedlowstiffnesspipesduetoundergroundaccidentalexplosionsisconstantirrespectiveofthegroundmediumwhileatpipestiffnessof300kPa,strainatthecrown,invertandspring-lineofburiedlowstiffnesspipesis0.00006.Remarkableresponseduetoundergroundaccidentalexplosions,inpressureandstresswasnoticeableatpipestiffnessof100kPaandabovewhilethatofsurfaceaccidentalexplosionsisnoticeableatpipestiffness10kPaandabove.Forlowstiffnesspipesburiedatlowdepthofburial,especiallyinundrainedclaysoil,thereisneedforexplosionresistanceevaluation.Thisisbecausematerialsyieldmoreatlowerdepthofburialcomparedtodeeplyburiedlowstiffnesspipes

【 授权许可】

Unknown