STAAD.Beava The bridge engineering automated vehicle application
STAAD.beava, the bridge engineering automated vehicle application, is an integrated offering inside the STAAD.Pro environment. STAAD.beava uses 3D influence surfaces, which are generated by STAAD.Pro as part of the loading process. STAAD.beava will automatically generate influence surfaces for effects such as bending moments on members, support reactions, element stresses and nodal deflections.
Prior to STAAD.beava, the process of load application for a bridge deck was complex since governing rules can impose inter-dependant parameters such as loaded length on a lane, lane factors and load intensity. To obtain the maximum design effects, engineers had to try many loading situations on a trial and error basis.
STAAD.beeva features and specification:
Generation of critical patterns of vehicular loads producing extreme effects in structural components.
3-D influence surface diagrams for design optimization and quick results verification.
Flexible user interface allows creation of straight, curved or custom-defined roadways on flat and super-elevated decks of any shape.
Traffic lanes are automatically created. Alternatively, fully customizable lanes may be specified by the user.
Vehicle database includes pre-defined loadings (H, HS, and HL designations). User-defined loadings may be added to the database as needed.
Load application algorithms include transverse movement of loads, jack-knifing of trucks within curved lanes, turning off axles not contributing to extreme effects.
Advantages of STAAD.beeva:
Substantially shortens the time required to complete the task.
Reduces the possibility of errors.
Produces effect-maximizing load patterns virtually impossible to devise by other methods.
Program calculates the following:
Number of traffic lanes,
Width and length of traffic lanes,
Positions of truck or tandem wheels within lanes,
Size and locations of uniformly distributed loads,
Locations of concentrated loads,
Values of responses for critical loading conditions.
Output in any unit system.
Powerful, intuitive graphical user interface. Loading patterns can be shown graphically on the model.
All results are easily accessible through an integrated load browser. A complete text output is also available.
How is Staad.beava used in conjunction with Staad Pro:
Staad beava uses Staad Pro as a platform .You need to use Staad Pro to create your model, assign member properties and other load cases. Use beava to calculate the influence surface and vehicle load calculations which are then exported into Staad Pro. Once imported into Staad, we can then apply the various load combinations with other loads and do the analysis/design using` Staad.
Support Multiple Design Codes:
AASHTO 2000 (ASD, LFD and LRFD)
UK BS5400 Part II
IRC:2000 Bridge Design Specifications with all relevant code provisions for loading definitions and traffic lane calculations incorporated.