Doboku Gakkai Ronbunshu · 1984 · 13 citations · 1 references
EngineeringCivil EngineeringBridge EngineeringStructural AnalysisStructural EngineeringBridge ConstructionBridge DesignBridge FatigueFatigueFracture MechanicsStructural TestingBridge Fatigue PerformanceCable-stayed Bridge ConstructionCracksFabricationFatigue Behavior In Truss BridgesFatigue TestingFour-point Bending Fatigue TestPartial Penetration Effects
One box-section member whose dimensions are almost equal to the truss chord of Iwakurojima Bridge, (the world's longest cable-stayed bridge) has been fabricated. The fabrication process of the bridge has been evaluated throughout the construction and the member is used in the following fatigue test. The dimension of the member is 1000mm wide and 1000mm high, and a 600MPa class steel of 45mm thickness is used. The corner joints of this member contain groove welds with partial penetration from outside and fillet welds from inside. The fatigue test is carried out under the four point bending method by a fatigue testing machine with the dynamic capacity of 4MN. Fatigue cracks originate from the location of distinct surface ripples in the stop-and-start position of the inside fillet welds in the corner joints and in several positions in the member.
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