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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,forbendingmo
2、mentoftensioniscausedbyreinforcedtoresist,thetensionisthroughbetweenreinforcementandconcretebondingandpassedtothesteel.Forlargescalecrazeanddeformationfor,althoughthehighstrengthconcretehasgoodbonding,toagreatextentcanrestore;Butintheconcreteandsteelbondingbetweenpoorordinaryconcrete
3、,isinfactcan'trecover.Ontheotherhand,intheprestressedconcrete,thepurposeofprestressedreinforcedbyrappingorthroughthespecialistheanchoragetoexertaforceconcrete,soallcanhavethefunctionofconcretestructure.Requirementsofprestressedsteelisusedtoproduceactivecomponentinadvancetoaddload,and
4、crackinganddeformationinlargerextentcanberestored.AbstractInordertoavoidreinforcedconcretestructureoftheprematurefracture,makefulluseofhighstrengthsteelandhighstrengthconcrete,triedtointheconcretestructureorstructuresunderloadbeforeuse,throughtheforceapplied,makebythetensilestresscom
5、ponentsisreduced,andeveninpressurestressstateofconcretecomponent.Preloadingstressisusedtoreduceoroffsetloadcausedbytheconcretetensilestress,andthestructureofthecomponentsinthesmallertensilestresscontrolrange,andeveninthecompressionstate,todelaythegenerationofcrackinconcreteanddevelop
6、ment,soastoimprovetheanti-crackingperformancecomponentandrigidity.Maintext4Prestressedconcretecomponenttothemethodofpretensionedstressingandposttensioned.1.pretensionedstressingIntheconcretepouring,firstbysteelwiresteelstrandorwillbecomposedoftheprestressedtendonpulledtoaspecifiedstr
7、ess,andtheanchorageanchorinapieratbothendspedestal,theninstallationtemplate,thestructure,steelandparts,andthenpouringconcreteandmaintenance.Whenconcreteafterthespecifiedstrength,relaxapieratbothendsofthetendons,throughthebondwillbetheprestressedconcreteandtensiontoproducepreloadingst
8、ress.Amethod
