aashto beams design
TRANSCRIPT
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FourSpan PS Concrete
Beam AASHTO Type III
Simple Spans InputAsBuilt Model Only
September,2011
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DETAILEDEXAMPLE
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
ONLYFOR
AS
BUILT
MODEL
PageNo.
CoverSheet 1
TableofContents 2
BridgeInformation 36
MaterialPropertiesInput 712
BeamShape 1314
Parapet 15
Impactand
Factors
16
17
SuperstructureDefinition(usingtheDiaphragmWizard) 1831
G1Input 3250
LinkingGirders 5153
G2Input(copyingpropertiesfromG1andmodifying) 5463
BridgeAlternative(usingtheSuperstructureWizard) 6468
RatingBridgeandReviewtheOutput(atbothbridgeandmemberlevel) 6987
MathCADcalculations
88
90
SuperstructureBridgePlans(plan,elevation,beamanddeckdetails) 9197
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEINFORMATION
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEINFORMATION
To create a new bridge right click on the folder where you want to save the bridge and choose New New Bridge.New window will appear, fill the data as shown below. See bridge plans for bridge information.
Template: Template bridges serve as templates to help develop other bridges.
Bridge Completely Defined: Check the box if the specified bridge is completely defined within the Virtis/Opis
Create new
bridge
Input bridge type
and plan number
Federal
ID
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEINFORMATIONEnter fields as shown:
The data to input traffic values can usually be found in the road plans for new bridges. For existing bridges, trafficinformation can be found in VDOT traffic report or bridge RNS/PONTIS.
OK button: Saves the bridge description in this window and its tabs to memory and closes the window.
Apply but ton: Saves the bridge description in this window and its tabs to memory and keeps the window open.
Virtis/Opis computes this value as theTruck PCT * ADT * Directional PCT.
Click to acceptand close
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEINFORMATION
Click to save
Click to save
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE4 ksi concrete for deck:
Copy from Library button: Opens the Library - Materials - Concrete window, allowing you to copy a set of concretematerial properties from the library to this window.
Double click to
open
Click to use datafrom library
Click toaccept
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE
5 ksi concrete for PS Concrete beams:
Click to accept
and close
Double click to
open
Click to use datafrom library
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE
Click toaccept
Change nameto A5
Click to acceptand close
Change to 5and push tab
Select Yes
Ec will be recalculatedbased on 5 ksiconcrete
Select YesInput 4 andpush tab
Initial modulus of
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPEGrade 60 ksi reinforcing steel:
Double click to
open
Click to use datafrom library
Cli k t
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE
Prestress strand:
Click to acceptand close
Double click to
open
Click to use data
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE
Click toaccept
Click to acceptand close
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPEI-beam section:
Double click to
open
Click once to
expand
Click once to
expand
Click to use datafrom library
Select narrowflange
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BEAMSHAPE
Click to acceptand close
Strand patterncan be modifiedusing this tab
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
PARAPETParapet:
Since there are 11 beams in the superstructure, parapet unit weight inputted as zero in this screen. Parapet load willbe applied only to 3 exterior girders in later steps.
Click to accept
Parapet load only appliesto 3 exterior girders. In thiswindow, parapet input asweightless.
Input parapet
name
I t t
Input parapetgeometry
Double click to
open
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
IMPACTANDFACTORSImpact/Dynamic Load Allowance:
Factors:
Click to acceptand close
AASHTO
LRFD Default
Double click toopen
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
IMPACTANDFACTORS
Click to use datafrom library
Click toaccept
Click to acceptand close
You can open to review the factorsfor different materials. Nomodification is needed.
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONSuperstructure Definition:
A girder system defines a set of girders within a cross section, including each girders relationship to the others.
In this example, all spans are identical, so one simple span was defined and assigned for Spans 1 to 4.
For PS Concrete Bridges, some of the lengths are defined based on CL to CL of bearings (full model) and some of thelengths are defined based on end to end of the PS beams (beam model). For further clarification, following is theinstruction from Virtis Manual:
Double click to
open
Click to acceptand close
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
Factor override:Allows you to override the System Defaults library factors with a set of factors that have beenentered for this bridge only. Factor overrides will remain when files are imported into future versions of Virtis. Unless
CL to CL ofbearings
Simplespan
OverrideLRFR factors
Click to acceptand close
Click to applythe changes
Do not check (forillustration only)
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
Add Default Load Case Descript ions button: Adds four default load cases to the load case description table asshown above. The default load cases include dead load (DC) acting on non-composite section, dead load (DC) actingon long term composite section, dead load (DW) acting on long term composite section and stay-in-place forms actingon non-composite section. These default load cases can be edited and modified as desired.
Framing Plan Detail:
Double click to
open
Click to acceptand close
Click to usedefault loads
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
Clockwise
skew, positive
Input skew
Input girder
spacing
Click to apply
the changes
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
See MathCAD
calculations on page 90
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITION
Click to apply
the changes
Click to applythe changesClick to add
new line orduplicate a line
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONCompute button: Opens the Compute Lane Positions window, which presents the computed values in the laneposition table based on information that you have entered using the other tabs of the Structure Typical Sectionwindow.
Apply button will populate the computed values for Lane Position.
Click toapply
This exampledoes not havewearingsurface
Click to applythe changes
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONNote: It is strongly recommended that the bridge data be saved at this point.
To access the Structure Typical Section view , your structure typical section must be highlighted in the BridgeWorkspace tree. Once structure typical section is highlighted, schematic view can be accessed by selecting ViewSchematic. This option is also available in toolbar under Bridge Menu or by right clicking on Structure TypicalSection.
Click on ViewSchematic
Highlight StructureTypical Section
Click here toclose thescreen
O S S CO C S O S S S
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONTo access the Framing Plan view , your framing plan detail must be highlighted in the Bridge Workspace tree. Onceframing plan detail is highlighted, schematic view can be accessed by selecting View Schematic. This option is alsoavailable in toolbar under Bridge Menu or by right clicking on Framing Plan Detail.
Click on ViewSchematic
Highlight FramingPlan Detail
Click here toclose thescreen
FOUR SPAN PS CONCRETE BEAM AASHTO TYPE III SIMPLE SPANS INPUT
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONStress Limits:
Double click to
open
Select Class A5 forPS Beams
Programcalculates stresslimits
Click to accept
and close
FOUR SPAN PS CONCRETE BEAM AASHTO TYPE III SIMPLE SPANS INPUT
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONPrestress Properties:
Double click to
open
Select P/S strand
Click to acceptand close
FOUR SPAN PS CONCRETE BEAM AASHTO TYPE III SIMPLE SPANS INPUT
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
SUPERSTRUCTUREDEFINITIONShear Reinforcement:
Double click to
open
Click to acceptand close
FOURSPAN PS CONCRETE BEAM AASHTO TYPE III SIMPLE SPANS INPUT
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUTMembers:
Existing: Check the box next to the name of the member alternative that represents the existing member. The
Double click to
open
Click to accept
and close
FOURSPAN PS CONCRETE BEAM AASHTO TYPE III SIMPLE SPANS INPUT
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FOUR SPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUTMember Loads:
Double click to
open
Select DC1 to add
additional deckweight at overhang Click to add
load
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
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G1INPUT
Select DC2 to addparapet weight
Click to addload
Input parapet load(1/3 of parapet weight,see MathCAD calcs.)
Click to applythe load
Select SIP Formsto add SIP weight
Click to addload
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
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G1INPUT
Load for G2 to G11: Repeat the same steps and input DC1, DC2 and SIP Form loads for all other beams. SeeMathCAD calculations for interior and exterior loads. Self-weight for deck and PS concrete beams will be calculatedby program. Concrete diaphragm weight was input previously in framing plan.
Note: It is strongly recommended that the bridge data be saved at this point.
Supports:
Input SIP Form weight(see MathCAD calcs.)
Click to acceptand close
Double click to
open
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
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G1INPUT
Support Type: Select the support types as either pinned, roller, fixed, free, or other. Check marks will automaticallyappear in the appropriate boxes for translation and rotation constraints to correspond with the selected support type.
Support Type for G2 to G11: Repeat the same step and input support type for all other beams.
Member Alternatives: Note that the following steps provide input for G1. Later, Member Alternative contents will becopied to G2 and G4 and modified. The remaining girders will be linked to either G1, G2 or G4.
Click to acceptand close
Double click to
open
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
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G1INPUT
Material Type: Select the material type. Virtis/Opis currently limits floorbeam and stringer definitions to steel beams.
Girder Type: Select the girder type. The girder types available are dependent upon the selected material type.
Default rating method: Select the default rating method to be used for the member alternative.
Click to applythe changes
For PS beam, only optionis schedule based
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G
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G1INPUT
Live Load Distribution:
Click to acceptand close
Virtis does not have the beam
information to generate Live Load
Distribution at this stage. Skip this
item for now.
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1 INPUT
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G1INPUTShrinkage/Time:
Double click to
open
Click to applythe changes
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1 INPUT
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G1INPUT
Click to applythe changes
End of thebeam to CLbearings
SeeMathCADcalculations
Click to add aline
Click to applythe changes
Beamlength (end
to end)
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1 INPUT
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G1INPUT
Strand Layout:
Click to acceptand close
Double click to
open
Virtis computesfor intentionallyroughened
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1 INPUT
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G1INPUT
By clicking on each
location, selectstrands at mid-spanbased on PSconcrete beam
Strands pattern at
mid-span
Verify total
Length from endof the beam toharp point
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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Note: Since G2 (interior girder) is not inputted yet, Virtis cannot generate deck profile for G1 at this point. Deck profilefor G1 will be generated in next steps, after inputting G2.
By clicking on eachlocation, selectharped strands at endof the beam based onPS concrete beam
Select left end toinput harpedstrand location
Click to acceptand close
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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Haunch Profile:
Double click to
open
Click to add aline
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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Shear Reinforcement Ranges:
Click to acceptand close
Double click to
open
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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The ranges of Shear Reinforcement must be defined in this tab over the entire the length of the PS Concrete Beam.
At this point beam information for G1 is completed and Virtis will be able to generate Standard Live Load DistributionFactors.
Input stirrupslocation
Click to acceptand close
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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Live Load Distribution:
Double click to
open
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G1INPUT
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Note: Standard Distribution Factors for LFR were created. However, since G2 (interior girder) is not input yet, Virtiscannot generate LRFD Live Load Distribution Factors for G1 at this point. LRFD Live Load Distribution Factors for G1will be generated after inputting G2.
Note: It is strongly recommended that the bridge data be saved at this point.
Click to applythe changes
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
LINKINGGIRDERS
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Link with: Select the member to which this member is to be linked. If two members are linked, they share the samedefinition and any revisions to one member affect the other member. If the applied loads acting on the two membersare different (due to different tributary width, different arrangements of parapets, medians, sidewalk, the railings, and
different lane positions), then they should not be linked with one another. If you do not want to link this member withany other member, select None. This input field is available for girder system only.
G11 is identical to G1 so it can be linked to G1 as shown below:
Double click to
open
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
LINKINGGIRDERS
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Repeat same steps to link G9 and G10 to G2.
G5, G6, G7 and G8 are identical to G4 so they can be linked to G4 (see linking G3 to G2 instruction).
Note: It is strongly recommended that the bridge data be saved at this point.
Click to acceptand close
G11 is linked to G1
G3, G9 and G10 linked to G2
G5, G6, G7 and G8 linked to G4
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUTCopy Properties:
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Copy Properties:
Since most girder detail and properties are similar between interior and exterior girders of this bridge, you can copy
properties of one girder to another as shown below:
Right click on G1 and choose Copy.
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Right click on Member Alternative for G2 and paste. You will notice that a copy of G1 is placed under G2 MemberAlternative. Double click to open it.
After copying and pasting exterior beam to interior, the following items need to be updated in interior beam:
- Live Load Distribution Factors (Standard and LRFD)- Deck Profile- Haunch Profile- Beam details and strand layout (if interior and exterior beams are different) In this case, they are identical.
Click to acceptand close
Rename MemberAlternative to G2
Double click to
open
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Click tore-compute
Click to applythe changes
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Click here to reviewdeflection, moment andshear distribution factors
Click to accept
Virtis generatesLive LoadDistribution Factors
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Double click to
open
Click tocompute
deck thicknessid d
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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If there is an error,manually input
effective width
For simple span, inputtingdeck reinforcement is notnecessary
Click to acceptand close
Double click to
open
Click to accept
and close
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Click here to reviewdeflection, moment andshear distribution factors
Click to acceptand close
Virtis generates
Live LoadDistribution Factors
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUTAt this point G2 is input and Virtis can generate Deck Profile for G1:
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At this point, G2 is input and Virtis can generate Deck Profile for G1:
Double click to
open
Click tocompute
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
G2INPUT
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Next step Copy G2 to G4 (similar to copying G1 to G2). When you copy a beam, the following items may need to beupdated:
- Live Load Distribution Factors (Standard and LRFD)- Deck Profile- Haunch Profile- Beam details and strand layout (if interior and exterior beams are different)
In this example, since G2 and G4 are identical, no update is needed.
Note: It is strongly recommended that the bridge data be saved at this point.
deck thicknessconsidered non-structural
If there is an error, manuallyinput effective width based onbridge typical section
For simple span, inputtingdeck reinforcement is notnecessary
Click to acceptand close
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEALTERNATIVEA bridge can have several unique bridge alternatives. Each bridge alternative must include the entire bridge but canconsist of different layout of superstructures The number of spans the span lengths and the pier locations are
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consist of different layout of superstructures. The number of spans, the span lengths, and the pier locations aredefined within the bridge alternative (and its accompanying windows). Entering different alternatives can be usefulwhen comparing various alternatives for a preliminary study.
The Description tab of bridge Alternative window allows you to describe the orientation of the bridge alternativereference line with respect to the bridge global reference point. You can generate the bridge alternative using theSuperstructure wizard or manually enter the require information. This data is more for information purpose than forcalculations. In this example, Superstructure wizard was used as shown below:
Double click to
open
Click here
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEALTERNATIVE
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Input number
of spans
Click to
generate
Click to
finish
Verify correct
superstructure
definition is selected
Click to
generate
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEALTERNATIVE
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Bridge alternative for 4 simplespans (spans are identical)
Click to acceptand close
Right click on Bridge
Alternatives and select
Expand Branch
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
BRIDGEALTERNATIVETo export the XML file to hard drive or server, click on file\export.
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTRating the bridge, reviewing the results and output:
Click on View analysis setting to select vehicles for ratings
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Click on View analysis setting to select vehicles for ratings.
Set the Rating
Method to LRFR
VA Semi is similar to VA Type 3S2 andVA Single is similar to VA Type 3
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUT
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Select the following trucks for simple span bridge rating. Since span lengths are less than 200, Legal Lane Load isnot required for rating.
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTClick on
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Click on
Advanced
Make sure permit loads are
set with unlimited crossing
mixed with traffic
Click to applythe changes
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTTo review the reactions and specification checks, make sure all items are checked in output menu.
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Click on Analyze button to start the analysis to rate individual girders in Bridge Workspace:
Select to analyze
all girders
Click to acceptand close
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTAnalysis can be done from the top for the whole structures as shown above or from the member folder for eachindividual girder as shown below. Simply select and click Analyze button to start.
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g p y y
Select for one
girder rating
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTTo review the result, select the girder and click on View analysis report icon.
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Step 1: Select
one girder
Step 2: Click to
review results
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTRate entire bridge in Bridge Explorer:
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Select the bridge in Bridge Explorer and click Rate.
Click to
close model
Step 2: Clickon the bridgein explorer
Step 1: Select Bridge
Explorer
Step 3: Click
on Rate
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUT
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Click to acceptand run
Click toclose
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTWhen using this method to rate the entire bridge, a screenshot for the lowest ratings will show on the screen
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Reviewing Output in Virtis. To review the output, calculations and specification checks, open the bridge and run allgirders or one individual girder as shown in the previous steps. In this example G1 is analyzed.
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUT
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To review the reactions and specification checks, make sure all items are checked in output menu.
Click to applythe changes
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTClick on Analyze button to start the analysis.
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTTo review analysis charts, select girder and click on view analysis charts icon.
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Click on view analysis
charts to see moment,
shear and deflection
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTTo review specification check, select girder and click on view spec check icon. Click on Specification Referencecolumn header to sort the column.
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Click on View Spec
Check to see
calculation details
Click to
select
Click on each column
to sort the results
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTScroll down to 5.7.3.2 Flexural Resistance to review moment capacity.
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Click toselect
Shows if item
passed or
failed
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUT
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTRating factor for Flexure (scroll down to 6.4.2.1 concrete flexure general load rating equation)
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Click to
select
FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTRating factor for PS Tensile Stress:
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Click to
select
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FOURSPANPSCONCRETEBEAMAASHTOTYPEIIISIMPLESPANSINPUT
RATINGBRIDGEANDREVIEWTHEOUTPUTRating factor for Shear: Scroll down to 6.4.2.1 concrete shear general load rating equation.
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Click to
select
Subject: Calculations for Bridge Load Rating Using Virtis
Structure ID: 21953State Bridge No: 131-2551
S D fi i i (A B il S 1 2 3 4)
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Superstructure Definition (As-Built Spans 1, 2, 3 or 4):
Framing Plan:
Skew DMS 10 21, 15,( ) 10.354 deg=:=
Structure Typical Section:
Spacing
Bay1to10
5ft 8in+ 5.667 ft=:=
Overhang 2ft:=
Member Alternatives:
kips 1000lb:=
Beam Details:
n
28500kips
in2
4074.28kips
in2
6.995=:= Use 7
Member Loads:
SIP Form Weight:
wSIP 20 lb
ft2
:=
WSIP_Ext wSIP
SpacingBay1to10
2 0.057
kips
ft=:= On G1 & G11
WSIP_Int wSIPSpacingBay1to10 0.113 kipsft
=:= On G2 to G10
Additional deck overhang weight:
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Diaphragm Weight (Intermediate):
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5'-8"
3'-9"
1'-212"
Adiaphragm 13.4417ft2
:=
tdiaphragm 8in:=
Wdiaph Adiaphragmtdiaphragm c 1.34 kips=:=
Diaphragm Weight (End) :
5'-8"
3'-9"
1'-9"
Adiaphragm 9.908ft2
:=
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VDOT VERSION 6.2
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VDOT VERSION 6.2
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VDOT VERSION 6.2
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VDOT VERSION 6.2
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VDOT VERSION 6.2
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