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Table of Contents

The bridge modeler provides design templates for conventional deck-section types, including flat slab, concrete box girder, and steel girder with a cast-in-place

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deck.

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Modeling

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decks

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not

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available

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through

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the

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bridge

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modeler

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must

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be

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done

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with

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direct

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methods.

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The

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advanced

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modeling

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features

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available

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for

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direct

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bridge-deck

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modeling

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include

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the

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following:

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Spine

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model

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  • Use

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  • the

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  • to

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  • develop

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  • the

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  • bridge

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  • cross

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  • section.

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  • Model

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  • the

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  • bridge

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  • superstructure

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  • using

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  • frame

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  • elements

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  • to

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  • extend

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  • the

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  • cross

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  • section.

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  • For

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  • complex

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  • bridge

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  • profiles,

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  • users

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  • to

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  • create

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  • bridge

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  • geometry

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  • using

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  • dummy

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  • bridge

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  • deck

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  • sections,

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  • then

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  • replace

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  • the

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  • dummy

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  • sections

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  • with

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  • a

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  • section from

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  • the

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  • section

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  • designer.

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Area

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model

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  • Use

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  • frame

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  • elements

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  • to

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  • develop

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  • the

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  • bridge-deck

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  • cross

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  • section.

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  • Create

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  • area

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  • elements

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  • by

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  • extruding

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  • frame

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  • elements

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  • along

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  • bridge

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  • layout

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  • lines

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  • with

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  • the

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  • Edit

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  • >

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  • Extrude

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  • >

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  • Extrude

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  • Lines

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  • to

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  • Areas

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  • option.

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  • Users

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  • may

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  • specify

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  • an

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  • advanced

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  • extrusion

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  • path

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  • using

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  • custom

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  • coordinates

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  • or

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  • a

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  • predefined

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Solid

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model

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  • Use shell elements to develop the bridge deck cross section.
  • Extrude the shell elements into solid elements by extruding the cross section along bridge layout lines using the Edit > Extrude > Extrude Areas to Solids option.

Obtaining bridge superstructure forces and stresses

When a bridge is modeled directly, bridge object force and stress diagrams are no longer created automatically. In this case, users should define multiple section cuts along the bridge superstructure to obtain bridge force and stress diagrams. This is known as post-processing section-cut results.


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Related incidents:

  • Incident 25217: Steel box deck section with single box.

Related emails:

  • Email "modeling solid box concrete bridge desk section": (ok → jh, 12/22/2011, ID 8094400)
  • Email "modeling bridge with u-shaped cross-section": (ok → rl, 1/24/2012, ID 8095354)

See also