Bentley RailtRack
Alignment Optimization for Maintenance and Design
Bentley Rail Track is a comprehensive solution for rail infrastructure design and maintenance. The software
delivers a high degree of automation to well-established workflows, with the added power of an integrated
geometry model that brings into play all aspects of the alignment. This results in significant productivity
improvements and time savings – while offering users greater opportunity to optimize the geometry to reduce
project costs. Available in many languages, Bentley Rail Track can be configured to support a wide range of
international standards.
Adapt to Any Project or Workflow
Bentley Rail Track adapts readily to virtually any rail design and maintenance workflow, increasing efficiency.
The software is suitable for designing light rail, heavy rail, and high-speed rail – including MAG-LEV. It addresses
track geometry (yard, depot, and station layouts) and earthworks and ballast. Users can generate realistic 3D
models for analysis and project visualization, create reports for cost estimates and setting-out, and produce fully
annotated project drawings/deliverables for client approval and construction.
Best-of-Class Solution
A robust toolset enables users to perform regression analysis, horizontal and cant/super-elevation design,
and alignment analysis as concurrent, integrated activities. Turnouts are placed from a user-definable library,
with fundamental types based on international standards. Advanced functionality such as regression analysis,
curvature diagrams, slew diagrams, interactive track editing, and automated cant/superelevation analysis
completes this best-of-class solution.
Easy to Use
The software provides an intuitive graphical user interface that gives easy access to an impressive set of
geometry functionality. Interactive tools enable users to rapidly place, modify, and extend alignments graphically
onscreen. Users can configure their own toolbars to group together commonly used tools for repetitive tasks or
to organize the tools into a workflow sequence. Context-sensitive help is available at all times, and user prompts
display to assist with particular operations.
Survey Data and Analysis
The Text Import Wizard streamlines the importing of track geometry data for the existing alignment. This may
be survey data for the left and right rails or for the track centerline. Tools provided in the system automate the
sorting and conversion of rail survey data into a horizontal, vertical, and cant alignment ready for regression
analysis.
Regression Analysis
Bentley Rail Track employs a least squares method of regression analysis of single and multiple elements
to calculate best-fit alignments. Regression points are derived from centerline or rail survey, and analyzed
according to user-defined criteria for fixity and weighting to limit movement at critical minimum clearance points.
Users can identify groups of points to be included for regression from the combined curvature-and-cant diagram,
enabling identification of the existing alignment elements. The inclusion of the cant data provides a more precise
match to existing geometry, optimizing the new design alignment while limiting slews and lifts.
This 2D/3D solution adapts readily to any rail design and maintenance
workflow.
Integrated cant and horizontal design ensures compliance
with design standards.
Least squares regression analysis calculates best-fit alignments.
Visit us on the Web for more information about Bentley solutions and services.
www.bentley.com
Alignment Design
The software provides a full set of tools for horizontal, cant, and vertical alignment design – either by the
points-of-intersection method or the element method. Users can move freely between either of these methods
at any point during the design process. The alignment design tools contain a comprehensive set of mathematical
algorithms covering the full array of horizontal transition spiral types along with their associated cant transition
algorithms. Users can describe vertical alignments either by vertical parabolas or by circular vertical curves with
vertical transitions.
Integrated Cant Design
The integration of the cant/superelevation design with the horizontal design process gives users immediate
visual confirmation of compliance with design standards. Built-in equilibrium equations compute equilibrium
cant, applied cant, cant deficiency, rate of change of applied cant, rate of change of cant deficiency, and cant
gradient. Transition lengths and applied cant can then be adjusted to optimize the alignment to all cant criteria.
Users can also deploy virtual transitions where horizontal transitions are not required.
Library of Turnouts/Switch and Crossings
Bentley Rail Track provides comprehensive capabilities for the placement of turnouts/switch and crossings as
parametric components. This technology saves time in the creation of complex geometries based on complex
rules for bending/flexing. Users can quickly place turnouts from delivered libraries comprising standard turnouts
from many countries. Alternatively, users can add their own designs to the library. The software handles turnouts
as well as single and double slips and diamond crossings. The Connection Editor makes fast work of connecting
turnouts to create crossovers and joining turnouts to other tracks.
Design Validation, Annotation, and Reporting
Various design checking tools highlight areas of nonconformance with design standards, allowing the user
to quickly identify and resolve problems. Designs can also be validated visually with tools such as curvature
diagrams, lift diagrams, and slew diagrams, and numerically using plan and profile annotation. The software
uses XML/XSL technology to report on all geometries (horizontal, vertical, and cant) – delivering greater flexibility
in report format creation.
Flexible Earthworks Modeling
Bentley Rail Track offers proven earthworks modeling technology developed for the Bentley Civil transportation
software. Designers can optimize the earthwork to reduce embankment/excavation or to minimize the
environmental impact on adjacent properties and facilities. Comprehensive surface editing, profile creation, and
cross section tools provide flexibility in the design of ballast, formation, roadway, and earthworks.
Support for Light Rail
A set of tools provides for the particular requirements of light rail design, fabrication, and construction. The
software creates detailed light rail elements: rails, joints, switch points, crossing points, distance keepers, and
so on. Users can produce the full array of drawings, reports, and specifications for jointed rail, pre-bent rail, and
multiple rail types.
Quickly place turnouts from libraries of standard turnouts
from many countries.
Validate designs visually and numerically using plan and
profile annotation.
Optimize design of ballast, formation, roadway,
and earthworks.
Visit us on the Web for more information about Bentley solutions and services.
www.bentley.com
MAInTEnAnCE WoRkFLoW
Data ImportGeometry or surface data in virtually any ASCII format
with a Text Import Wizard
Versine
Industry-standard LandXML geometry (horizontal, vertical,
and cant) and surface data
Regression Analysis Horizontal and vertical alignments from survey data utiliz-
ing least squares computations
Simultaneous regression of single or multiple elements
with the Connection Editor
Single element regression or heads-up point selection and
automatic single-element regression
Advanced multi-element regression with all supported
element types (lines, circular arcs, and transition spirals)
Validation of existing survey data based on user-specified
criteria (minimum/maximum distance between points,
angular differences, gradient differences, and so on)
Conversion of surveyed rails to centerline
Data selection and sorting
Data editing for inclusion, exclusion, and weighting
Rail Curvature Diagram
Automatically generates transition points
Inclusion of cant as an improved source of data
for element determination
Design ValidationCurvature diagrams and/or slew diagrams
Plan and profile annotation
XSL/XML reporting (horizontal alignment, vertical align-
ment, and cant)
Export to FieldPlasser & Theurer tampers (ALC and WinALC systems)
Matisa tampers (the PALAS system)
Trimble
Leica
LandXML
Design WorkflowInteractive Geometry
Robust sets of interactive geometry tools for on-screen
alignment generation
Tools using methods and principles specific to rail design
and civil engineering
Check Integrity tool for location and removal of alignment
discontinuities
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Horizontal AlignmentLines
Circular arcs (arc and chord definition)
Multiple spiral transition definitions, including:
Clothoid
Cubic parabola
Bloss
Biquadratic parabola
Sinusoidal
Cosine
Viennese-Austria
Vertical AlignmentLines
Parabola
Circular arcs
Vertical clothoid transition spirals
CantEquilibrium equations ( D = 11.8 * V2 / R )
Computation of equilibrium cant, applied cant, cant
deficiency, rate of change of applied cant, rate of change
of cant deficiency, and cant gradient
ASCII tables
Transitions
Transitions that match the supported horizontal
transitions
Virtual transitions (where horizontal transitions are
not required but cant is required)
Design checks incorporated in editing
Cant integrated into all horizontal curve edits
TurnoutsTurnouts in the most popular configurations:
Single branch
Double branch
Single slip
Double slip
Diamond crossings
Support for multiple bending methods
Swiss bending practice
German bending practice
UK tangent and offset practice
Library of industry-standard turnouts
German standards
German light rail standards
UK 113a and RT60 standards
AREMA standards
Tools for user-defined standards
Interactive creation and editing
Turnout Connection Editor for connecting turnouts and
editing connections
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Bentley Rail tRack at-a-Glance
Validate design visually with curvature, lift, and slew diagrams.
Turnouts/switch and crossings are placed as parametric components.
Special tools streamline light rail design, fabrication, and construction.
Visit us on the Web for more information about Bentley solutions and services.
www.bentley.com
© 2007 Bentley Systems, Incorporated. Bentley, the “B” Bentley logo, Fiber, Geo Web Publisher and Inside Plant, are either registered or unregistered trademarks or service marks of Bentley Systems, Incorporated or one of its direct or indirect wholly-owned subsidiaries. All other trademarks are the property of their respective owners. All other brands and product names are trademarks of their respective owners. BAA014560-1/0001 9/06
Bentley Rail tRack
SyStem RequiRementS
Prerequisites:
MicroStation V8 XM Edition,
MicroStation V8 2004 Edition,
AutoCAD 2004, AutoCAD 2005, or
AutoCAD2006
Processor
Intel® Pentium®-based or AMD
Athlon™-based PC or workstation
operating System
Microsoft Windows® 2000 Profes-
sional (SP4 or higher) or Microsoft
Windows XP Professional (SP2 or
higher)
Memory
512MB (more memory typically
results in better performance)
Disk Space
310MB minimum free disk space
Internet Browser
Microsoft Internet Explorer 5 or
greater
Internet Explorer 6.0 is
required to view XML
Reports
Cipher Strength: 128-bit
(required for Digital Rights)
Input Device
Mouse or digitizing tablet (digitizing
tablet requires vendor-supplied
WINTAB driver or Bentley’s Digitizer
Tablet Interface, included with the
MicroStation installation)
output device
Supports most industry-standard
devices, including output devices
supported by Windows
Video
Multi-monitor configurations
supported with Windows XP and
Windows 2000
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aBout Bentley
Bentley Systems, Incorporated provides software for the lifecycle of the world’s infrastructure. The company’s comprehensive
portfolio for the building, plant, civil, and geospatial verticals spans architecture, engineering, construction (AEC) and operations.
With 2005 revenues of $336 million and more than 2,000 colleagues around the world, Bentley is the leading provider of AEC
software to the Engineering News-Record Top 500 Design Firms and major owner-operators.
For more information, visit www.bentley.com or call 1-800-BENTLEY.
Surface ModelingProfile Generator
Easy profile creation across multiple surfaces
Display and annotation of profiles and associated
data such as vertical curves, superelevation
diagrams, and digital terrain modeling (DTM) features
Feature-based DTM
Flexible, double-precision
Intelligent features
Representation and labeling of the DTM based on
feature definition
Proper display and labeling of terrain features
throughout the model
Typical Section Libraries
Custom creation of typical sections for generating
cross sections on the fly
Cut/fill tables and decision tables for automatic
adjustment of the model to predefined conditions
InteroperabilitySeamless integration between CAD platforms - in both
DGN and DWG environments
Integration with Bentley® ProjectWise® to bring collab-
orative design data to the entire project team in a secure
environment
Integration with Digital InterPlot®, enabling automated
plot set generation and Web-based access to plot archives
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Bentley Worldwide Headquarters
Bentley Systems, Incorporated
Exton, PA, USA
+1 800 BENTLEY
+1 610 458 5000
Design checking tools pinpoint areas of non-conformance.
Bentley International Headquarters
Bentley Systems Europe B.V.
JC Hoofddorp
THE NETHERLANDS
+31 23 556 0560
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