%0 Journal Article
%T Full
%A Jun Xu
%A Shunyao Cai
%A Weizhen Chen
%J Advances in Structural Engineering
%@ 2048-4011
%D 2018
%R 10.1177/1369433217726897
%X A novel leaning-type spatial arch bridge without thrust was designed as a landmark in a major urban city. In order to alleviate the higher negative reaction force at side span and enhance the lateral stability, commonly the case within this type bridge, a large-size replaceable box-shaped steel rod with pinned connections was introduced. The fatigue behaviour of the box-shaped steel rod and related upper and lower anchorage segments was investigated through a full-scale constant-amplitude fatigue test under axial loading. In comparison to the fatigue test results, the fatigue evaluation based on Eurocode 3 nominal stress design curve FAT56 considerably overestimated the fatigue strength of critical welded detail in box-shaped steel rod, which was underrated according to the universal International Institute of Welding effective notch stress design curve FAT225. The presented full-scale programme also validated the applicability of the latter method, which presented conservative results, to large-size thick-plate (80£żmm) welded joints. The conclusion based on the test and theoretical results may provide a reference for the fatigue design of adopting box-shaped steel rod in spatial arch bridges
%K effective notch stress
%K fatigue test
%K full-scale
%K spatial arch bridge
%K welded joints
%U https://journals.sagepub.com/doi/full/10.1177/1369433217726897