Structural

Engineering

INTEGRATED 3D BRIDGE DESIGN SOFTWARE



Modeling, analysis and design of bridge structures have been integrated into CSiBridge to create the ultimate in computerized engineering tools. The ease with which all of these tasks can be accomplished makes CSiBridge the most versatile and productive software program available on the market today.



Using CSiBridge, engineers can easily define complex bridge geometries, boundary conditions and load cases. The bridge models are defined parametrically, using terms that are familiar to bridge engineers such as layout lines, spans, bearings, abutments, bents, hinges and post-tensioning. The software creates spine, shell or solid object models that update automatically as the bridge definition parameters are changed.

CSiBridge design allows for quick and easy design and retrofitting of steel and concrete bridges. The parametric modeler allows the user to build simple or complex bridge models and to make changes efficiently while maintaining total control over the design process. Lanes and vehicles can be defined quickly and include width effects. Simple and practical Gantt charts are available to simulate modeling of construction sequences and scheduling.

CSiBridge includes an easy to follow wizard that outlines the steps necessary to create a bridge model.

Completely integrated within the CSiBridge design package is the power of the SAPFire® analysis engine, including staged construction, creep and shrinkage analysis, cable tensioning to target forces, camber and shape finding, geometric nonlinearity (P-delta and large displacements), material nonlinearity (superstructure, bearings, substructure and soil supports), buckling and static and dynamic analysis. All of these apply to a single comprehensive model. In addition, AASHTO LRFD design is included with automated load combinations, superstructure design and the latest seismic design.

Advanced Analysis (Selected)

Post Tensioning
Automated vertical and horizontal tendon layouts can be assigned to your bridge structure. The tendons can be added to frame, shell or solid elements and the user has control to include time dependant effects i.e. creep, shrinkage as well as relaxation, anchorage slip, elastic shortening losses parameters for the analysis.

Foundation Modelling Options
There are numerous ways to model your foundation in CSiBridge.
-Pile or spread footings.
-Compression only springs.
-Grade beams as line springs can be used.
-Soil springs properties may be linear or nonlinear.
-P-Y multi-linear force deformation assignments.
-Linear/nonlinear foundation springs



Sequential Construction Analysis
CSiBridge has powerful sequential construction capabilities where the construction can be modelled in groups of objects of element by element. The user can specify boundary conditions that can change over a construction sequence e.g. from pin to fix. Effects of change in section properties, change supports, modify frame end releases, Add/remove elements and loads, creep, shrinkage, strength changes and Incremental cable tensioning can easily be accomodated for.

Dynamic moving load analysis
CSiBridge is able to provide results for true dynamic effects of moving live loads as shown in the video below. The vehicles moving across the box-girder bridge at different speeds results in different types of response in the structure.



Response Spectrum and Time History Analysis
As for all CSI software, CSiBridge excels in seismic analysis. Modal frequency analysis using Ritz or Eigen vectors is available as well as Linear Time History Analysis and Nonlinear Time History Analysis with the Wilson FNA Method


Otte is the Sole Singapore CSiBridge distributor as well as the Sole Malaysia CSiBridge distributor. Other Computers and Structures Products such as SAP2000, ETABS, and SAFE are also distributed by Otte.