The substructure seismic-design process in the bridge modeler is documented in the Bridge Seismic Design manual. This manual, based on AASHTO specifications for LRFD bridge seismic design, describes the automated seismic-design procedure for bridges. Displacement-demand formulation is based on Article 4.8 of the AASHTO Guide Specifications for LRFD bridge seismic design.

Applicability

Design procedures implemented in the bridge modeler are applicable to reinforced-concrete columns.

...