From InRoads to 3D Bridge Modeling using LEAP · Analysis •Line Girder or Grillage Live Load...

1 | WWW.BENTLEY.COM | © 2014 Bentley Systems, Incorporated1 | WWW.BENTLEY.COM | © 2014 Bentley Systems, Incorporated

From InRoads to 3D Bridge Modeling using LEAP

Ron Gant, P.E. (TX), Industry Marketing Director, Roads

2 | WWW.BENTLEY.COM | © 2014 Bentley Systems, Incorporated

InRoads

InRoads offers immersive interaction of

– Survey

– Geometry

– Terrain modeling

– Corridor modeling

– Dynamic cross sections

– Civil cells

– Design intent

– Design-time visualization


LEAP Bridge for Everyday Bridges

LEAP Bridge Enterprisefor Concrete Bridges

LEAP Bridge Steelfor Steel Bridges


Which Comes First?

Chicken or Egg?

Bridge or Road?


Design and Rating of Steel Bridges

LEAP Bridge Steel


LEAP Bridge Steel Overview

• Bridge Configurations– Simple and continuous spans

– Straight and curved alignments

– Rolled shapes, Welded plate girders

– LRFD Specification, 6th Edition, and

– AASHTO Manual for Bridge Evaluation, 2nd Edition

• Provides:– Parametric modeling

– Streamlined analysis

– Design, and Load Rating


Workflow

• Libraries

• Roadway definition

• Superstructure

• Substructure

• Analysis

• Design

• Rating


Libraries


Appurtenance Library

• Parapets, Medians, Sidewalks, and Railings

• Automatic DC2 load generation

• User extensible


Vehicle Library

• Standard Design, Legal and Permit vehicles

• Lane Load

• User –defined vehicles


Material Library

• Concrete

• Steel

• Reinforcing Steel


Roadway Elements


Roadway Data

Import from Bentley InRoads and GEOPAK

Define manually


Roadway

Alignment, Profile and Cross Section Define a Roadway


Superstructure


Pier Lines

• Define location of abutments and piers

• Normal or skewed to alignment

• Offset to alignment


Deck Slab

• Define as a single slab or slab segments

• Slab segments can be used for deck placement analysis

• Composite/non-composite based in shear connector locations


Deck Reinforcing Steel

• Locate longitudinal and/or transverse slab steel

• Locations based on slab definition


Member Groups

• Member Group = Framing Plan

• Simple and/or continuous spans

• Curved, straight or flared girder arrangements


Standard Rolled Sections List

• Select standard rolled shapes from library

• Use for main girders, cross frames and shear connectors


Member Definition

• Rolled shapes and/or Built-Up members

• Schedule based methodology

• Linear, parabolic and circular transitions


Cross Frames / Diaphragms

• X, V, inverted V and diaphragms

• Control of work lines relative to girders

• Angle leg and channel toe orientation


Locate Cross Frames / Diaphragms

• Per bay or Entire Span/Bridge

• Wizards to automatically locate connection plates and bearing stiffeners


Stiffener Definition and Location

• Define Bearing and Connection plates, and Shear Stiffeners

• Corner clipping

• Manual or auto locate


Shear Connector Definition and Location

• Define stud, channel or “generic” connectors

• Locate along members by range

• Copy locations from one member to another


Appurtenance Locations

• Locate parapets, medians, railing, sidewalk and generic bridge appurtenances

• Automatic dead load calculation

• Defines travel way for live load analysis


Substructure


Abutments

• Pile Cap or Step Wall

• Define abutment configuration and geometry

• Define pile size and arrangement


Piers

• Multi-Column or Hammerhead

• Define pier configuration and geometry

• Define pile size and arrangement


Support Condition

Pinned, roller, fixed, float and directional (guided)


Analysis


Points of Interest

• Automatically generated at key feature locations

• User specified increments

• User custom POIs

• Section breaks


Deck Placement Sequence

Stage Initial

Stage 2

Stage 3

Stage Final


Loads and Load Combinations

Automatically generated Stage 1

deck slab dead load


Analysis

• Line Girder or Grillage Live Load Analysis

• Takes into account structure stiffness variations during staged construction and final analysis for DC1, DC2 and DW loading

• Displays results in graphic and report form

• Powered by STAAD.Pro


Graphical Results

Moment and Shear diagrams

for Stage 1 – end slab

placement


Tabular Results

Displacement report for Stage 1, slab dead load


Design

AASHTO LRFD Bridge Design Specifications, 6th Edition


Design

Sample reports

• Pass or Fail Report

• Under or Over Design Report


Rating

AASHTO Manual of Bridge Evaluation, 2nd Edition with 2013 Interims


3D MicroStation Model


From InRoads to 3D Bridge Modeling using LEAP

Ron Gant, P.E. (TX), Industry Marketing Director, Roads

From InRoads to 3D Bridge Modeling using LEAP · Analysis •Line Girder or Grillage Live Load...

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