Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62339
Title: Second-order direct analysis of domelike structures consisting of tapered members with I-sections
Authors: Liu, SW
Bai, R
Chan, SL 
Liu, YP
Keywords: Tapered sections
Nonlinear
Steel
Dome
Element
Analysis
Analysis and computation
Issue Date: 2016
Publisher: American Society of Civil Engineers
Source: Journal of structural engineering, 2016, v. 142, no. 5, 4016009 How to cite?
Journal: Journal of structural engineering 
Abstract: 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 alpha(i) and beta(i) 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.
URI: http://hdl.handle.net/10397/62339
ISSN: 0733-9445
EISSN: 1943-541X
DOI: 10.1061/(ASCE)ST.1943-541X.0001464
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