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Second-Order Direct Analysis of Domelike Structures Consisting of Tapered Members with l-Sections
| 题名： | Second-Order Direct Analysis of Domelike Structures Consisting of Tapered Members with l-Sections |
| 正文语种： | 英文 |
| 作者： | Si-Wei Liu; Rui Bai; Siu-Lai Chan;Yao-Peng Liu |
| 作者单位： | Hong Kong Polytechnic Univ |
| 关键词： | Tapered sections; Nonlinear; Steel; Dome; Element; Analysis; Analysis and computation. |
| 摘要： | A new and advanced beam-column element, namely the curved tapered-three-hinges (TTH) beam-column element, is proposed in this paper. The present element can perform large deformation analysis and explicitly simulate the initial member curvature, which is essential for the second-order direct analysis using one-element-per-member models. Another distinct feature of the element is to analytically express the flexural rigidity of tapered I-sections in the stiffness matrix through a series of tapered stiffness factors such as the a, and B, factors. Unlike the conventional models using the approximated distributions (e.g., linear, parabolic, or cubic) or stepped-elements modeling approaches in an analysis, the present study gives an accurate simulation solution on nonprismatic beam-column elements. Herein, the element derivations and formulations are given in detail. To consider the large deflection effect in the analysis, the incremental tangent stiffness method is adopted and the kinematic descriptions are presented. Finally, several examples are employed to validate and verify the reliability and accuracy of the proposed element. DOI: 10.106l/(ASCE)ST.1943-541X.0001464. © 2016 American Society of Civil Engineers. |
| 出版日期： | 2016.05 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.05 |
| 页码： | 04016009 |
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