土木工程专业毕业设计外文文献翻译2篇.pdfVIP

土木工程专业毕业设计外文文献翻译2篇

XXXXXXXXX学院学士学位毕业设计（论文）英语翻译

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FundamentalAssumptionsforReinforcedConcrete

Behavior

Thechieftaskofthestructuralengineeristhedesignof

structures.Designisthedeterminationofthegeneralshapeand

allspecificdimensionsofaparticularstructuresothatitwill

performthefunctionforwhichitiscreatedandwillsafely

withstandtheinfluencesthatwillactonitthroughoutusefullife.

Theseinfluencesareprimarilytheloadsandotherforcestowhich

itwillbesubjected,aswellasotherdetrimentalagents,suchas

temperaturefluctuations,foundationsettlements,andcorrosive

influences,Structuralmechanicsisoneofthemaintoolsinthis

processofdesign.Ashereunderstood,itisthebodyofscientific

knowledgethatpermitsonetopredictwithagooddegreeof

certainlyhowastructureofgiveshapeanddimensionswill

behavewhenacteduponbyknownforcesorothermechanical

influences.Thechiefitemsofbehaviorthatareofpractical

interestare(1)thestrengthofthestructure,i.e.,thatmagnitude

ofloadsofagivedistributionwhichwillcausethestructureto

fail,and(2)thedeformations,suchasdeflectionsandextentof

cracking,thatthestructurewillundergowhenloadedunder

servicecondition.

Thefundamentalpropositionsonwhichthemechanicsof

reinforcedconcreteisbasedareasfollows:

1.Theinternalforces,suchasbendingmoments,shearforces,

andnormaland

shearstresses,atanysectionofamemberareinequilibrium

withtheeffectoftheexternalloadsatthatsection.This

propositionisnotanassumptionbutafact,becauseanybodyor

anyportionthereofcanbeatre