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This page is devoted to frequently asked questions (FAQ) related to bridge modeler basic concepts. |
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Obtaining bridge force and stress diagrams
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Any objects added manually are not automatically added to the section cuts. These objects may resist loading, and their contribution to performance may not be displayed in force and moment diagrams.
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Bridge response after manual modification
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Stresses reported on the "Bridge Object Response Display" form are calculated from forces acting on individual bridge deck section components using beam stress formula which is based on the assumption that plane section remains plane. For example, the top center stress in the slab is calculated from the slab axial force P and moments M3 and M2 as stress = P/A + M3/W33 + M2/W22, where A is the slab area and W22 and W33 are the section moduli of the slab. Similar procedure is used for the calculation of the stresses in the beam.
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The stress calculation description has been added based on phone discussion between ok and ac on 5/24/2017. -ok 5/25/2017 Related Emails:
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