prestressedconcretetechnology预应力混凝土英语论文

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1、PrestressedConcreteTechnology提纲：摘要：预应力混凝土的定义正文：预应力混凝土的应用、实例应用讨论：预应力混凝土的优点和缺点总结：预应力混凝土的发展的前景IntroductionPrestressedconcreteandreinforcedconcreteinprincipleareclearlydifferent.Inthedesignofthereinforcedconcretebeams，regardlessoftheconcretecanbeassumedthatthetensilestrength，forbendingmomen

2、toftensioniscausedbyreinforcedtoresist,thetensionisthroughbetweenreinforcementandconcretebondingandpassedtothesteel.Forlargescalecrazeanddeformationfor，althoughthehighstrengthconcretehasgoodbonding，toagreatextentcanrestore;Butintheconcreteandsteelbondingbetweenpoorordinaryconcrete，isinf

3、actcan’trecover.Ontheotherhand,intheprestressedconcrete,thepurposeofprestressedreinforcedbyrappingorthroughthespecialistheanchoragetoexertaforceconcrete，soallcanhavethefunctionofconcretestructure.Requirementsofprestressedsteelisusedtoproduceactivecomponentinadvancetoaddload,andcrackinga

4、nddeformationinlargerextentcanberestored.AbstractInordertoavoidreinforcedconcretestructureoftheprematurefracture，makefulluseofhighstrengthsteelandhighstrengthconcrete，triedtointheconcretestructureorstructuresunderloadbeforeuse，throughtheforceapplied，makebythetensilestresscomponentsisred

5、uced，andeveninpressurestressstateofconcretecomponent.Preloadingstressisusedtoreduceoroffsetloadcausedbytheconcretetensilestress，andthestructureofthecomponentsinthesmallertensilestresscontrolrange,andeveninthecompressionstate，todelaythegenerationofcrackinconcreteanddevelopment，soastoimpr

6、ovetheanti-crackingperformancecomponentandrigidity.MaintextPrestressedconcretecomponenttothemethodofpretensionedstressingandposttensioned.1.pretensionedstressingIntheconcretepouring,firstbysteelwiresteelstrandorwillbecomposedoftheprestressedtendonpulledtoaspecifiedstress，andtheanchorage

7、anchorinapieratbothendspedestal，theninstallationtemplate，thestructure，steelandparts，andthenpouringconcreteandmaintenance.Whenconcreteafterthespecifiedstrength，relaxapieratbothendsofthetendons，throughthebondwillbetheprestressedconcreteandtensiontoproducepreloadingstress.Amethodb