Abstract
The objective of this study is to analyse the difference of dynamic response of the deck pavement between a box girder bridge with corrugated steel webs and a concrete web box girder bridge. In this study, a simply supported beam with a span of 34 m is taken as the research object. According to the principle of equal shear stress of the box girder section, the three-dimensional finite element model of the superstructure of two kinds of box girder bridges is established by the finite element software ABAQUS. The DLOAD and UTRACLOAD subroutines are called to impose a movement load on the bridge deck. The dynamic response of the bridge deck pavement under different vehicle speeds (36 km/h, 72 km/h, and 108 km/h) and different load types (single wheel rectangular uniform load and double wheel rectangular uniform load) is calculated. The variation trends of vertical displacement, longitudinal shear stress, and transverse stress of two bridges are compared. The results show that, under the same conditions, the dynamic response of the box girder bridge with corrugated steel webs is greater than that of the equivalent concrete web box girder bridge. The box girder bridge with corrugated steel webs has lightweight, good seismic performance and bending resistance, and more obvious advantages in deflection control. The equivalent concrete web box girder bridge has good shear and torsional properties. The response of two kinds of deck pavement systems of the box girder bridge under dynamic loads is more obvious than that under static loads. This study would provide some theoretical reference for the dynamic response of the deck paving system of box girder bridges.
Highlights
Along with the rapid development of science, technology, and national economy, there are more and more types of bridges, the speed of vehicles has been greatly improved, and the number of multiaxle and heavy-haul vehicles has significantly increased. us, the damage of the bridge structure pavement system became increasingly complex and prominent
Fiore and Marano [2] conducted full-scale ambient vibration tests involving a 380 m concrete box girder bridge and compared the measured results of environmental vibration with the modal frequencies calculated by a detailed three-dimensional finite element model
Shock and Vibration of the bridge. e results show that the linear finite element model can accurately reflect the dynamic characteristics of the concrete box girder bridge
Summary
E objective of this study is to analyse the difference of dynamic response of the deck pavement between a box girder bridge with corrugated steel webs and a concrete web box girder bridge. E results show that, under the same conditions, the dynamic response of the box girder bridge with corrugated steel webs is greater than that of the equivalent concrete web box girder bridge. E box girder bridge with corrugated steel webs has lightweight, good seismic performance and bending resistance, and more obvious advantages in deflection control. E equivalent concrete web box girder bridge has good shear and torsional properties. E response of two kinds of deck pavement systems of the box girder bridge under dynamic loads is more obvious than that under static loads. E response of two kinds of deck pavement systems of the box girder bridge under dynamic loads is more obvious than that under static loads. is study would provide some theoretical reference for the dynamic response of the deck paving system of box girder bridges
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