Tests and design approach for plain channels in local and coupled local-flexural buckling based on eurocode 3
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- 作者：Dieter Ungermann ; Sebastian Lü ; bke ; sebastian.luebke@tu-dortmund.de" class="auth_mail ; ; Bettina Brune
- 关键词：B ; Section width ; H ; Section depth ; t ; Thickness of steel plate ; L ; Column length ; fy ; Yield strength ; ey ; Eccentricity due to shift of centroid from gross to effective cross-section ; e ; Initial geometric imperfection ; etotal ; Total eccentricity of applied compression force with respect to the effective cross-section ; 位¯ ; p ; Slenderness ratio of plate considered ; k蟽 ; f ; Buckling factor flange ; k蟽 ; w ; Buckling factor web ; Aeff ; c ; Area of effective cross-section for pure compression ; Ieff ; c ; Mome
- 刊名：Thin-Walled Structures
- 出版年：August 2014
- 年：2014
- 卷：81
- 期：Complete
- 页码：108-120
- 全文大小：2947 K
文摘
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Tests performed on coupled local-flexural buckling show how both instabilities interact with each other.
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The coupled buckling behaviour is crucially depending on the bending direction of single symmetric plain channels.
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Modified buckling coefficients which take into account the interaction of adjacent plates increase the accuracy of calculated effective cross-sections.
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Eurocode 3 design approach can be improved by an approximation of effective stiffness with respect to flexural buckling slenderness ratio.
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Eurocode 3 part 1-3 Annex D can be used for welded thin-walled sections as well.