鋼纖維混凝土糧食立筒倉結(jié)構(gòu)分析.pdf

1、河南工業(yè)大學(xué)碩士學(xué)位論文鋼纖維混凝土糧食立筒倉結(jié)構(gòu)分析姓名：方濤申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：王振清20070501AbstractSilocallbeusedtostoregrainonlyifithasthecharacterairtightnessTensilestressinthecircledirectionwillbeyieldedinthebulkheadofthesilowhenthelateralpress

2、ureandverticalfrictionalforcecomingfromthemovementofgrainitselfisaffectedThecrazingphenomenonoftenappearsinthebulkheadofthesilobecausethetensilestrengthinthecommonreinforcedconcreteislowandthecrackisliabletobeextendedIno

3、rdertoimprovethisoperatingcondition，thematerialpossessinguppertensilestrengthcallbeusedinthesiloconstructionThecharacterofconlmonconcretecanbeimprovedwhensteelfiberiSmixedintoconcreteandthisnewtypeofconcreteCanbeusedtesi

4、standpreventthecrackThethesisisaHenanprovincenaturalsciencefundproject(code0311051500)TheeffectofthesteelfiberconcreteonthelimitingstateofnormalUSeandbearingcapacityinsilowillbeinvestigatedinthisthesisThetestofaxesboardi

5、ntensioniSusedtosimulatetheconditionthatthelateralpressureandverticalfrictionalforceisbroughttobearuponbulkheadofsiloStrainandcrackopeningofthekeypointsintestingboardisobtained，andtheresultsCanbeusedtoprovethatthesteelfi

6、berCanimprovethecharacterofconcreteinresistingandpreventingthecrackTheseparatingfiniteelementmodelisusedtosimulatetestingboardinthisthesisThemethoddirectedcreatingfiniteelementmodelisusedandtheconceptionofsimplegeometric

7、albodyisputforwardandsystemofnonlinearequationsisdiscussedinthisthesisTheestimatingformulaaboutcrackopeningisputforwardinthisthesisrelyingonthe，bycalculatingandanalyzingtestingboardThedeformationofthesilosupportedgramloa

8、dandsilogravitytakeonhorseshoeshapeThenlaxstresstakesplaceinthesupportofthesilobutthes缸essfallsshortofthecrackingloadofthesteelfiberconcreteSostrengtheningmeasurethatfiberCanbeusedonlyin2mhighbasedontherootofthesiloDesig

9、noptimizationiscarriedOilinthetestingboardandsiloinorderteflecttheeffectofthesteelfiberfurtherAconclusionthatthetensilestrengthofthesteelfiberconcreteshouldbeconsideredandsteelbarCanbepartlyreplacedbysteelfiberisdrawnint