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AISC/NSBA Design Example 3 "Three-Span Continuous Horizontally Curved Composite Steel I-Girder Bridge" is a benchmark example which is regularly updated by the NSBA and extensively covers multiple limit states to be addressed during design, from constructibility, strength, serviceability and fatigue. It is available at:  
https://www.aisc.org/globalassets/nsba/design-resources/steel-bridge-design-handbook/b954_sbdh_appendix3.pdf

The screenhots below are directly taken from the mBrace3D live load analysis model of the design example in question. Dynamic load allowance and multiple presence factors are automatically taken into account, following the AASHTO LRFD Bridge Design Specifications.

This model is available by clicking this button:

Influence-19.png

Influence surface and associated critical vehicle load configuration for the minimum major-axis bending moment at Pier 2, exterior girder.

Geometry-Step1.png

Geometry and boundary conditions (deck not shown for clarity)

FramingPlan_NSBA3.PNG

Framing plan (.DXF format) automatically generated by mBrace3D

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