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Bridge Analysis Options
- Support for an exceptionally wide range of moving, static and dynamic load and analysis types.
- Moving loads with 3-D influence surfaces
- AASHTO, Chinese, or user-defined nonlinear temperature gradients
- Multi-step static and dynamic moving load analysis
- Response spectrum and time-history analysis
- Geometric and material nonlinearity
- Pushover analysis
- Buckling analysis
- Multi-support base excitation
- Parametric loading of superstructure
- Live load distribution by code or analysis
- True dynamic effects of moving live loads
- High frequency blast dynamics using Wilson FNA
Time History Analysis
- Modal frequency analysis using Ritz or Eigen vectors
- Linear Time History Analysis
- Nonlinear Time History Analysis with the Wilson FNA Method
Response Spectrum Analysis
- Response-spectrum analysis is a statistical type of analysis for the determination of the likely response of a structure to seismic loading.
- Response-spectrum analysis seeks the likely maximum response to these equations rather than the full time history.
- The earthquake ground acceleration in each direction is given as a digitized response-spectrum curve of pseudo-spectral acceleration response versus period of the structure.
Nonlinear Staged Construction
- Provides users with intuitive control over time effects.
- Segmental, composite, and other bridge types
- Gantt chart construction scheduler
- Creep, shrinkage, and strength change
- Camber calculation and shape finding
- Automatic cable tensioning
- Add/remove elements and loads, change section properties, change supports, modify frame end releases
Steady State Analysis
- Steady-state analysis is available to determine the response of the structure due to cyclic (harmonic, sinusoidal) loading over a range of frequencies.
- Multiple loads may be applied at different phase angles.
- The structure may be damped or undamped.
- Frequency-dependent stiffness and damping (complex impedance) properties may be included for modeling foundations and far-field effects, including radiation damping.
- The response may be viewed at any phase angle. The effects of multiple machines operating at different frequencies can be considered by combining the results of several analyses in the same model.
Pushover Analysis
- Force-Deformation relations for steel and concrete hinges
- Modal, muiform, or user defined lateral load patterns
- Capacity spectrum conversions
- Effective damping calculation
- Demand spectrum comparisons
- Performance point calculation
- Summary reports including plastic hinge deformations
Shape Finding
- Allows modification of the undeformed geometry of the structure to achieve a desired deformed shape.
- Original undeformed geometry of the structure (geometry when the structure was first defined) is assumed to be the target for the deformed geometry of the structure under a user-specified load case.
- Option to revise original joint coordinates by subtracting displacements obtained from a specific case.
