Print Email Facebook Twitter Flexural strength and rotation capacity of welded I-section steel beams with longitudinally profiled flanges Title Flexural strength and rotation capacity of welded I-section steel beams with longitudinally profiled flanges Author Liu, X. (Tsinghua University) Wang, Yuanqing (Tsinghua University) Ban, Huiyong (Tsinghua University) Liu, Ming (Angang Steel Company Limited, Anshan) Veljkovic, M. (TU Delft Steel & Composite Structures) Bijlaard, F.S.K. (TU Delft Steel & Composite Structures) Date 2020 Abstract Application of longitudinally profiled (LP) steel plate in the flange of flexural members may provide a good solution to optimize their mechanical performance and to improve the efficiency of steel use, whilst existing design codes provide no design guidance or prediction methodology for such advanced beams in terms of flexural behaviour. To clarify their flexural strength and rotation capacity, tests on two full-scale welded I-section steel beams with longitudinally profiled flanges (LPB members) are carried out herein, as well as two traditional beams with uniform cross-section for comparison. All the specimens exhibit sufficient flexural strength and rotation capacity for seismic plastic design, and specifically, the LPB members possess even better performance in case of identical steel usage. Parametric analyses of 250 beams incorporating a wide range of flange slenderness and steel grades, are conducted by employing the validated nonlinear FE model to investigate the effects of rate of thickness change for the LP flanges. The results show that the effect is limited on the flexural strength but significant on rotation capacity. The existing design provisions for beams with uniform cross-section give generally conservative design results for the flexural strength of the LPB members, but limiting values of flange slenderness needs to be reduced. The research outcomes may provide an important basis for promoting the application of LP plates in flexural members. Subject Flexural strengthLongitudinally profiled steel plateRate of thickness changeRotation capacityWelded I-section steel beam To reference this document use: http://resolver.tudelft.nl/uuid:07144e7f-4d9d-466a-810c-692632f64b9e DOI https://doi.org/10.1016/j.jcsr.2020.106255 Embargo date 2021-01-25 ISSN 0143-974X Source Journal of Constructional Steel Research, 173, 1-15 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2020 X. Liu, Yuanqing Wang, Huiyong Ban, Ming Liu, M. Veljkovic, F.S.K. Bijlaard Files PDF 1_s2.0_S0143974X20308075_main.pdf 3.95 MB Close viewer /islandora/object/uuid:07144e7f-4d9d-466a-810c-692632f64b9e/datastream/OBJ/view