Abstract
It is predicted that plate girder bridges having a steel girder with a concrete slab connected by slab anchors behave as rather composite girder bridges actually. But the composite action due to slab anchors is ignored in present design of plate girder bridges. Therefore, there is a difference between the behavior according to the design practice and the actual behavior for continuous plate girder bridges.
In this paper, in order to investigate a behavior of a two-span continuous plate girder bridge under a service load level, a crack width of a concrete slab over the internal support, a deflection along the span and magnitude of the shear force of shear connectors is analyzed by employing a rigid-body-spring model having nonlinear material properties.
