Impacts of Poisson Ratio on Ultimate Bearing Capacity of Concrete Filled Steel Tubular Arch Bridge
Hu Qing’an,Zhou Xiangshu,Zhu Hao
(Highway College, Chang’an University, Xi’an, 710064, China)

Abstract: Considering the geometrical physical nonlinearities simultaneously, the impacts of poisson ratio of core concrete on the ultimate bearing capacity of a large-spaned concrete filled steel tubular arch bridge are analyzed. A 3D-si mulation for a pedestrian overcrocs, bridge shows the evolutiion with the variable concrete poisson ratio up to the structural failure. Comparatively, the bearing capacity analysis considering the variable concrete poisson ratio enables to enhance the design capacity by 10%.
Keyword: concrete filled steel tubular arch bridge, poisson's ratio, ultimate be aring capacity, deflection, crush, simulation analysis.