东南大学硕士学位论文
摘要
ABSTRACT
Deck
surfacing
is
a
technicaldifficultpointintheconstructionoflongspansteelbridges.The
are
workingconditionsandrequirementsoftheapplicationofsurfacing
farmorestringentthantheseof
ordinaryroadpavements.Withtheinfluenceofnaturalenvironmentandtrafficload,itiseasyfordeckto
bedamaged.Torecent,therehavenot
a
designmethodforcommonuse.InordertogetuDwiththefast
developmentoflongspanbridgesinChina,makingextensivestudyofthepavingstructuresanddo
some
researchesaboutmechanicsanalysiswillhaveimportanttheoreticalmeaningandapplication
value.
Usingthehierarchicalanalyticalmethod,thepapermakesthemechanicsanalysisofthepave.
Themainresearchesincludedthefollowingaspectsandgotthecorrelativeresults:
Firstly,usingtheaxialforceoftheprincipalbeam
as
thecontrolindex,thepapermakethe
was
mechanicsanalysisofthetwodimensionsFEAmodel,leastfavorablepositionsresearchwefindthattheinfluenceofthetemperaturestressislittle.
found.Thoughtthe
Secondly,fromintegraltopart,theinfluenceofbridgedeform
was
studied.Usingthecompute
simulateandthepracticetesting,wefindthatorthotropicsteelbridgedeckcanreflecttherealworkingconditionofbridgedeck
Thirdly,usingtheorthotropicsteelbridgedeckmodel,regularityofpaveunderthehorizontaland
ihevertica|Icad
was
found.
Finally,usingtheorthotropicsteelbridgedeckmodel,thedifferenceinfluenceofthesingle-wheel
anddouble-wheelwasstudiedandtheleastfavorablepositionswasfound.Wethinkthatsingle-wheelissafetywhen
use
themaxtensilestress
as
thecontrolindexandshouldchoosedouble‘wheelwhen
thesheardestroyofdeckbestudied.
【keywords]deck
wholedeformofbridgeorthotropicsteelbridgedeckmodelcontrolindex
Ⅱ
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