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Moving-load analysis is available to the bridge modeler for generating the influence lines and surfaces of vehicle loading within the traffic lanes of bridge and roadway infrastructure. Vehicle load may be created or selected from a variety of code-based standards, then combined and enveloped with additional static and dynamic load patterns.

Additional information is available in the CSI Analysis Reference Manual, Chapter "Moving-Load Analysis".

Articles

Tutorials

TitleDescriptionProgram

Influence-based moving-load analysis first steps (CSiBridge)

Procedure for setting up influence-based moving-load analysis.

CSiBridge

Influence-based moving-load analysis first steps (SAP2000)

Procedure for initiating influence-based moving-load analysis.

SAP2000

Lane definition per layout line or frame

This tutorial provides guidelines for lane definition according to either layout-line or frame-object configuration.

SAP2000

Step-by-step moving-load analysis first steps (CSiBridge)

Procedure for setting up step-by-step moving-load analysis.

CSiBridge

Step-by-step moving-load analysis first steps (SAP2000)

Procedure for initiating step-by-step moving-load analysis.

SAP2000

Test Problems

TitleDescriptionProgram

Horizontal moving loads

Demonstration of horizontal moving loads

CSiBridge

Influence surface

Influence-surface verification for a cantilever beam modeled using shell objects.

SAP2000

Moving-load analysis section cuts

Verification of section-cut forces generated during moving-load analysis.

SAP2000

Saving section cuts during moving-load analysis

Sections cuts may be saved during moving-load analysis through this procedure.

SAP2000

Vehicle remains fully in lane

Verification of moving-load analysis when the option is specified for a vehicle to remain fully in lane.

SAP2000