Technical Knowledgebase

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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".



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 frameThis 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

Horizontal moving loadsDemonstration of horizontal moving loads compared against hand calculated results.CSiBridge
Influence surfaceInfluence-surface verification for a cantilever beam modeled using shell objects.SAP2000
Moving-load analysis section cutsVerification of section-cut forces generated during moving-load analysis.SAP2000
Saving section cuts during moving-load analysisSections cuts may be saved during moving-load analysis through this procedure.SAP2000
Vehicle remains fully in laneVerification of moving-load analysis when the option is specified for a vehicle to remain fully in lane.SAP2000