Shear behaviour and design of diagonally stiffened stainless steel plate girders

Abstract

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Shear resistance and design of stainless steel plate girders in fire

“…Stainless steel plate girders generally carry large transverse loads and typically involve highly slender webs to achieve the efficiency in material use, which make them particularly susceptible to shear buckling. There exist comprehensive previous research into the structural response and design of stainless steel plate girders at room temperature [1][2][3][4][5][6][7][8]. However, the research into the behaviour and design of stainless steel plate girders in fire is very scarce.…”

Ultimate Resistance of Diagonally Stiffened Thin Steel Webs in I‐girders

“…Over the years, the topic of diagonally stiffened webs in steel I-girders has earned much less attention than 'classical' stiffening options. Most of the works found in the literature are limited to the obtention of the elastic critical stress [1] [3] [4] [5].…”

“…Recently, Yuan et al [5] and Glassman et al [6] published works where contributions to the knowledge of the ultimate strength of diagonally stiffened plates are given. Before these works, the contribution of Jensen & Antoni [7] is also acknowledged.…”

Experimental behaviour of stainless steel plate girders under combined bending and shear

“…The experimental setup for plate girder tests is shown in Fig. 7, which was successfully applied in the previous studies on shear behaviour of stainless steel girders [26][27]. Each plate girder specimen was tested under three-point bending condition, resulting in a combination of relatively high shear force and high bending moment within the interior web panels.…”

“…However, the latest edition of EN 1993-1-4+A1 [19] does not provide separate design formulae for stainless steel plate girders under combined bending and shear; the related design formulae in SEI/ASCE 8-02 [20] are the same with those for cold-formed carbon steels; and the M-V interaction expressions in CECS 410 [21] do not take into account the postbuckling capacities, with few test results being available for the required verification. Moreover, the existing experimental studies [22][23][24][25][26][27] on stainless steel plate girders have mainly focused on the shear response, involving the critical shear buckling and postbuckling behaviour, yet little attention has been paid to the interaction effect between bending and shear. In view of the absence of a distinct yielding plateau and the considerable strain hardening capacity of stainless steels, the necessity of further research work for M-V interaction of stainless steel plate girders has been highlighted.…”