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Lateral-Torsional Buckling of Shear Deformable Monosymmetric Steel Ⅰ-Section Arches with Elastic Rotational-End Restraints under a Central Concentrated Load
| 题名： | Lateral-Torsional Buckling of Shear Deformable Monosymmetric Steel Ⅰ-Section Arches with Elastic Rotational-End Restraints under a Central Concentrated Load |
| 正文语种： | eng |
| 作者： | Liu, Lulu;Lu, Hanwen;Liu, Airong;Pi, Yong-Lin;Bradford, Mark Andrew |
| 作者单位： | Guangzhou Univ Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St 230 Waihuanxi Rd HEMC Guangzhou 510006 Peoples R China;Guangzhou Univ Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St 230 Waihuanxi Rd HEMC Guangzhou 510006 Peoples R China|Foshan Univ Sch Transportat Civil Engn & Architecture 18 Jiangwanyi Rd Foshan 5288225 Peoples R China;Guangzhou Univ Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St 230 Waihuanxi Rd HEMC Guangzhou 510006 Peoples R China;Guangzhou Univ Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St 230 Waihuanxi Rd HEMC Guangzhou 510006 Peoples R China|Univ New South Wales Ctr Infrastruct Engn & Safety Sydney NSW 2052 Australia;Guangzhou Univ Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St 230 Waihuanxi Rd HEMC Guangzhou 510006 Peoples R China|Univ New South Wales Ctr Infrastruct Engn & Safety Sydney NSW 2052 Australia |
| 关键词： | Lateral-torsional buckling;Central concentrated load;Monosymmetric I-section;Elastic-rotational constraints;Shear deformations |
| 摘要： | This paper investigates the elastic lateral-torsional buckling of shear deformable circular arches of monosymmetric steel I-section with in-plane elastic rotational end constraints under a central concentrated radial load. In previous studies of monosymmetric arches reported in the literature, their ends were considered to be fix-ended or pin-ended in the plane of their curvature. In practice, the ends of an arch are not always fix-ended or pin-ended. The ends of an arch may have elastic restraints provided by elastic foundations or other adjacent structural elements. In addition, Timoshenko shear deformations, which are inevitable for arches with small and moderate slenderness ratios, are not considered in previous studies of the topic. The major contributions of this article are the following: (1) accurate strains and deformed curvatures for monosymmetric arches, including shear deformations, are derived using position vector analysis; and (2) in-plane analyses, including the influences of the elastic rotational end restraints, are successfully carried out in two steps to obtain the accurate axial compressive force, bending moment, and shear force distributions for lateral-torsional buckling analysis. The theoretical solutions for the lateral-torsional buckling load are obtained by applying the principle of stationary potential energy together with a Rayleigh-Ritz formulation and validated by ANSYS version 15.0 modeling of the problem. (C) 2020 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 147 |
| 期： | 2 |
| 页码： | 04020321.1-04020321.15 |
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