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- 저자 : Lianfei Tan (검색결과 1 건)
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Fatigue Strength Evaluation of Welded Structural Details in Corrugated Steel Web Girders
Zhiyu Wang,Lianfei Tan,Qingyuan Wang 한국강구조학회 2013 International Journal of Steel Structures Vol.13 No.4
Fatigue strength evaluation of welded structural details is of practical significance in the design of corrugated steel webgirders in highway bridges and industrial structures. In this paper, the fatigue strengths of corrugated steel web girders withseveral welded structural details and welding methods are analytically examined by fatigue tests of corrugated web beams andsmall-size welded joints. The stress concentration & distribution characteristics of corrugated web beams were analysed usingfinite element analysis. The beam test results showed that the structure with scallops or notches in the flange has lower fatiguestrength and that with butt joints is prone to suffer from shear crack on the corrugated web. Within the inside range of thescallop, the stress concentration becomes greater with the increase of scallop radius and the tension flange contributessignificantly to the bending capacity of corrugated steel web beams. The tests for small-size welded joints indicated theirapplicability in the analysis and prediction of S-N relationship of the test corrugated steel web beams. Finally, the fatigue crackpropagation lives of weld joints were compared with those of test corrugated steel web beams with respect to related designCategories of the AASHTO LRFD Bridge Design Specifications.
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