@inproceedings{oai:kutarr.kochi-tech.ac.jp:00001256,
 author = {OGIYAMA, Yotaro and FUJIYAMA, Chikako and TAKASUKA, Takehiro},
 book = {Society for Social Management Systems Internet Journal},
 month = {Dec},
 note = {The purpose of this study is to analyze the fatigue damage process of a plate girder bridge
supporting a steel-concrete composite slab, and to propose a method for maintenance of the composite slab.
To analyze a full-scale bridge subjected to heavy traffic, three-dimensional non-linear FE analyses and
loading rates based on an actual bridge are used.
The full-scale bridge model is a 2-lane road bridge with 30 m span length and 10.55 m width, consisting
of main girders with vertical stiffeners, cross beams, and composite slab. All structural elements were
modeled as solid elements in order to enable detailed examination of stress distributions, although shear
studs throughout the bottom plate were implicitly modeled as interface elements. The initial bond and surface
friction between transverse ribs and concrete were taken to be the other types of interface elements.
First, a static load was applied to the center of the slab at the mid-span of the bridge. Although slips between
transverse ribs and concrete were observed during the static loading process, a rapid decrease of load
carrying capacity of the composite slab was not observed.
Next, four parallel moving loads, simulating the loads of vehicles, were applied to the slab along the
bridge axis. Under high cycle load repetition, development of strains around the ribs was observed. This
indicates the characteristic cracking mechanism of concrete in the composite slab. Visualization of analysis
enabled the clarification of the fatigue damage mechanism of the composite slab. This study indicates that
inspection of this type of composite slab is important for road maintenance.},
 publisher = {Society for Social Management Systems},
 title = {FATIGUE DAMAGE MECHANISM AND ITS APPLICATION BASED ON FULL-SCALE ANALYSIS OF STEEL-CONCRETE COMPOSITE SLAB SUBJECTED TO REPETITION OF TRAFFIC},
 volume = {9},
 year = {2014}
}