integrated 3d bridge design software - techiesoft · bridge object loads may be assigned for any...
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DWC LLC
Exclusive Distributor in the Middle East for CSI Software licensing,
technical support and training solutions – www.techiesoft.com For Sales: [email protected] For Technical Support: [email protected]
Integrated 3D Bridge Design Software
CSiBridge Features:
User Interface
One Window, Many Views
CSiBridge offers a single user interface to perform: MODELING, Analysis, Design, Scheduling,
Load Rating, and Reporting.
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CSiBridge Features:Modeling
Templates
CSiBridge OFFERS a selection of templates for quickly starting a new bridge model or
structure. This is often a good starting point to creating a model as the template can be
modified later.
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Interactive Database Editing
Interactive database editing allows users to edit model data in a table view which simplifies
the task of making CHANGES to the model. Tables are easily exportable and importable from
Microsoft Excel and Microsoft Access.
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CSiBridge Features:Parametric Bridge Modeling
Bridge Object Model
The bridge object MODEL is a comprehensive assemblage of components that make up the
entire bridge model. The parametric model is managed through the bridge object model.
This includes: the modeling of deck sections, diaphragms, bearings, restrainers, foundation
springs, superstructure variation, abutments, bents, hinges, tendon layouts, and more.
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Bridge Wizard
The Bridge Wizard is a powerful tool that guides users step-by-step through the creation of a
complete bridge MODEL with instructions at each step to ensure that all of the necessary
components are defined in the model.
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Layout Lines
Layout lines define the highway layout of the bridge. They can be defined within CSiBridge
using bearing and station notation, or they can be IMPORTED using a TransXML file. As
layout lines are modified, the entire bridge structure and its parametric geometry is
updated.
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Superstructure Deck Sections
CSiBridge has a wide array of parametric deck sections INCLUDING concrete box girders,
precast I and U girders, steel boxes, and steel girder bridges. All deck sections are
parametrically configurable for an accurate bridge deck section definition.
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Substructure
Bridge substructures can very accurately be MODELED in CSiBridge. Bents, abutments,
restrainers, bearings and foundation springs are all elements that can be defined as either
link or hinge elements.
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Diaphragms
Diaphragms may be located at the supports and along the spans. Types INCLUDE concrete,
steel girder, and detailed steel cross-frames. These may be skewed and staggered. Interior
cross frames for steel U-girders may also be specified.
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Post-Tensioning
Define post-tensioning in CSiBridge using the REFINED options for laying out tendons and
forces. When defining box girders, CSiBridge will automatically assign the drape locations
within the tendon; the engineer can edit them as well.
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Parametric Variations
CSiBridge allows variations for the entire bridge or just parts of the bridge alignment and
slope, for both horizontal or vertical variations of the deck section. Defining variations
parametrically significantly reduces the amount of time spent on the MODELING process.
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Lanes
Quickly define the lanes based on the layout lines of the bridge. The lanes can be defined
such that the width of each lane is wider than the design vehicle. Enveloped response results
can be defined later to accurately MODEL vehicle loads on the bridge.
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CSiBridge Features:Structural Components
Joints
CSiBridge automatically creates joints at structural object intersections or internal joints
when meshing structural objects. Joint coordinates and INFORMATION may be displayed on
screen in the model window or in tabular format.
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Frames
The frame element uses a general, three-dimensional, beam-column formulation which
includes the EFFECTS of biaxial bending, torsion, axial deformation, and biaxial shear
deformations. CSiBridge has a built-in library of standard concrete, steel, and composite
section properties of both US and International Standard sections.
Intermediate joints will automatically be generated where other members intersect with the
frame to ensure finite element CONNECTIVITY.
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Tendons
In CSiBridge, Tendons are easily drawn as INDEPENDENT objects, with geometry specified as
straight lines, parabolas, circular curves, or other arbitrary shapes. They can also be defined
parametrically to drape inside of a box girder. Tendon loads, including all losses, are easily
defined.
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Cables
The cable element is a highly nonlinear element used to model the catenary behavior of
slender CABLES under their own self-weight. They are particularly useful in modeling
suspension bridges or cable-stayed bridges.
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Shells
The shell element is a type of area object that is used to MODEL membrane, plate, and shell
behavior in planar and three-dimensional structures. The shell material may be
homogeneous or layered throughout; material nonlinearity can also be considered when
using the layered shell.
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Solids
The solid element is an eight-node element for MODELING three-dimensional structures and
solids. It is based upon an isoparametric formulation that includes nine optional
incompatible bending modes and is useful for modeling objects in which loading, boundary
conditions, section properties, or reactions vary by thickness.
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Links
A link element may exhibit linear, nonlinear, and frequency dependent behavior. The
following link elements are available in CSiBridge: Linear, Multi-linear Elastic, Multi-linear
Plastic, Gaps, Hooks, DAMPERS, FRICTION Isolators, Rubber Isolators, T/C Isolators,
Frequency-dependent Springs, and Frequency-dependent Dampers.
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Hinges
Users can create and apply hinge properties to perform pushover analyses in CSiBridge.
Nonlinear material behavior in frame elements (beam/column/brace) can be modeled using
fiber hinges. This approach represents the material in the cross section as discrete points,
each following the exact stress-strain curves of the material. MIXED materials, such as
reinforced concrete and complex shapes can be represented.
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Springs
Spring supports are link elements that are used to elastically connect joints to the ground
and can be linear or nonlinear in nature. Nonlinear support conditions can be modeled to
include gaps (compression only), multi-linear elastic or plastic springs, viscous dampers, and
base isolators. Advanced modeling capabilities allow foundations to be included with the
superstructure, including piles and spread FOOTINGS. P-Y multi-linear force deformation
parameters and compression-only soil springs can be defined.
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Vehicle Loads and Classes
Vehicles are used to define the moving loads in CSiBridge and are most often defined to act
on the traffic lanes. There are standard types of vehicles in the program, or users can design
unique vehicles using the general vehicle SPECIFICATION. Vehicle classes are sets of one or
more vehicles that can be assigned to act on lanes in a moving-load case.
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Load Patterns
A load pattern is a specified spatial distribution of forces, displacements, temperatures, and
other effects THAT act upon the structure.
Parametric Loading
Superstructure loads may be defined and assigned to a bridge object model parametrically.
Bridge Object loads may be assigned for any defined load pattern type and may include
loads due to wearing SURFACES, parapets, forms, diaphragms, girders, decks and more.
Once the parametric bridge object loads have been defined they may be easily displayed and
modified.
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Parametrically defined load ASSIGNMENTS are preserved even when changes are made to
the bridge object discretizations, deck types or alignments.
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CSiBridge Features:Analysis
Overview
CSI Solvers have been tried and tested by the industry for over 35 years. The SAPFire
Analysis ENGINE can support multiple 64-bit solvers for analysis optimization and perform
both Eigen Analysis and Ritz Analysis.
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Moving Load
Moving load analysis is available in CSiBridge to compute influence lines and SURFACES for
traffic lanes on bridge structures and to analyze these structures for the response due to
vehicle live loads. Vehicles can also be moved in a multi-step analysis. This can use either
multi-step static load cases or time-history load cases, the latter of which can be linear or
nonlinear.
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Buckling
Linear (bifurcation) buckling modes of a structure can be found under any set of loads.
Buckling can be calculated from a nonlinear or staged-construction state. Full nonlinear
buckling analysis is also available considering P-delta or large deflections effects. Snap-
through buckling behavior can be captured using static analysis with displacement
CONTROL. Dynamic analysis can be used for modeling more complex buckling, such as
follower-load problems.
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P-Delta
P-delta analysis captures the SOFTENING effect of compression and the stiffening effect of
tension. A single P-delta analysis under gravity and sustained loads can be used to modify
the stiffness for linear load cases, which can later be superposed. Alternatively, each
combination of loads can be analyzed for full nonlinear P-delta effects. P-delta effects are
included for all elements and are seamlessly integrated into analysis and design.
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Pushover
Pushover analysis features in CSiBridge include the implementation of FEMA 356 and the
hinge and fiber hinge option based on stress-strain. The nonlinear layered shell element
enables users to consider plastic behavior of concrete shear walls, slabs, steel plates, and
other area finite elements in the pushover analysis. Force-deformation RELATIONS are
defined for steel and concrete hinges.
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Dynamic
CSiBridge dynamic analysis capabilities include the calculation of vibration modes using Ritz
or Eigen VECTORS, response-spectrum analysis, and time-history analysis for both linear and
nonlinear behavior.
Eigen-vector modal analysis finds the natural vibration modes of the structure, which can be
used for understanding the behavior of the structure, and also as the basis for modal
superposition in response-spectrum and modal time-history load CASES. Ritz-vector modal
analysis finds the optimum modes for capturing structural behavior in response-spectrum
and modal time-history load cases, and is more efficient for this purpose than Eigen-vector
analysis.
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Time Dependent
Staged construction is a type of nonlinear analysis in CSiBridge THAT allows you to define a
sequence of stages wherein you can add or remove portions of the structure, selectively
apply load to portions of the structure, and to consider time-dependent material behavior
such as aging, creep, and shrinkage.
Staged CONSTRUCTION is variously known as incremental construction, sequential
construction, or segmental construction.
Steady State
Steady state analysis is available to determine the response of the structure due to cyclic
(harmonic, sinusoidal) loading over a range of frequencies. Frequency-dependent stiffness
and damping (complex impedance) properties may be included for modeling foundations
and far-field effects, including RADIATION damping. Steady state analysis can be used to
measure the effects of multiple machines operating at different frequencies by combining
the results of several analyses in the same model.
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Target Force
During nonlinear static analysis, cable and frame elements can be automatically STRAINED
to achieve specified target axial force values. This is most commonly used to tighten cables
to pre-specified tensions, but it can also be used to jack structures to a specified force using
frame elements.
Load Combinations
CSiBridge allows for an unlimited number of load CASES and combinations. Load
combination types include: linear additive, envelope (min/max), absolute add, SRSS, and
range combinations. Combination components can include other combinations.
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CSiBridge Features:Design
Steel Frame
Fully integrated steel frame DESIGN includes member size optimization and implementation
of design codes. CSiBridge allows users to interactively view design results at any frame
member, change the parameters or section properties, and display the updated member
results.
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Concrete Frame
Fully integrated concrete frame DESIGN in CSiBridge includes: required area of steel
calculations, auto selection lists for new member sizing, implementation of design codes,
interactive design and review, and comprehensive overwrite capabilities.
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Superstructure
CSiBridge will perform the superstructure DESIGN for the following bridge superstructure
types and codes:
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Automated Seismic
Engineers can define specific seismic design parameters to be applied to the bridge MODEL
during an automated cycle of analysis through design. The new AASHTO seismic design
specification has been incorporated into CSiBridge, including pushover analysis for seismic
category D.
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CSiBridge Features:Load Rating
Load Rating Overview
CSiBridge load RATING CALCULATES the safe load capacity of a bridge based on the
requirements of the AASHTO Manual for Condition Evaluation and Load and Resistance
Factor Rating (LRFR) of Highway Bridges October 2003 with 2005 Interim Revisions and the
Manual for Bridge Evaluation Second Edition 2011 with 2013 Interims.
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CSiBridge Features:Output and Display
Deformed Geometry
Users can display deformed geometry based on any load or combination of loads, as well as
ANIMATIONS of modes.
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Force Diagrams
Shear and moment diagrams display internal shear forces, moments, and displacements at
all locations along the length of a frame element for any load case or load combination.
CSiBridge gives the option to scroll along the length to display values or scroll DIRECTLY to
the maximum value location.
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Bridge Reponses
In CSiBridge, moving load response is CALCULATED for all joints and elements. For each of
the following types of response, you may request a group of elements for which the
response should be calculated: Joint displacements, Joint reactions, Frame forces and
moments, Shell stresses, Shell resultant forces and moments, Plane stresses, Solid stresses
and Link/support forces and deformations.
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Influence Surfaces
An influence surface can be viewed as a curve of influence values plotted at the load points
along a traffic lane. For a given response quantity (force, displacement, or stress) at a given
location in the structure, the influence value plotted at a load point is the value of THAT
response quantity due to a unit concentrated downward force acting at that load point.
Animations
CSiBridge allows users to animate results of vehicles and other loads on the bridge MODEL
to help understand bridge behavior. Create movie files showing time-history and moving
vehicle responses, including multiple vehicles.
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CSiBridge Features:Reporting
Report Generation
Pre-formatted printed reports are now available at the push of a button. These reports
include all pertinent model data and the results of analysis and design. Data is presented in
tabulated format, along with graphics, table of contents, and a cover sheet displaying project
information and your company name and logo.
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CSiBridge Features:Tools
Load Optimizer
The load optimizer is a tool in CSiBridge to compute the optimal load application to achieve
desired structural response. Loads may BE applied linearly, nonlinearly, or in staged-
construction. Goals and limits may include displacements, forces, moments, and more.
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Section Designer
Section Designer is a utility that is built into CSiBridge. It allows users the ability to create
specialized sections of any arbitrary shape and material, including rebar layout. All section
properties, biaxial interaction diagrams, and moment curvature diagrams are automatically
CALCULATED.
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CSiBridge Features:Import and Export
Supported Formats
CSiBridge supports many industry standards for importing and exporting data. LANDXML,
AutoCAD (DXF/DWG), CIS/2, IFC, and SDNF are all supported. CSiBridge also supports
exporting of a MODEL to an Microsoft Access database. If users are using other analysis
packages, CSiBridge can import files from FrameWorks Plus, IGES, STAAD, and STRUDL.
CSiBridge Compare Levels:
CSiBridge is available in four levels:
Plus, Plus with rating, advanced, and Advanced with Rating