Topic
Portal frame
About: Portal frame is a research topic. Over the lifetime, 1778 publications have been published within this topic receiving 7210 citations.
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TL;DR: In this paper, the authors present the sensitivity and statistical analyses of the load-carrying capacity of a steel portal frame, and apply the Sobol sensitivity analysis to identify the dominant input random imperfections and their higher order interaction effects on the load carrying capacity.
71 citations
TL;DR: In this paper, the authors investigated the long-term creep and short-term failure of a plane portal frame structure constructed entirely of pultruded fiber-reinforced plastic (FRP) components.
70 citations
TL;DR: In this article, a method of inelastic analysis for studying the limit-state behavior of steel frames with composite floor beams subjected to the combined action of gravity and lateral loads is presented.
Abstract: This paper describes a method of inelastic analysis that provides the necessary degree of accuracy for studying the limit-state behavior of steel frames with composite floor beams subjected to the combined action of gravity and lateral loads. An inelastic formulation is proposed to model the composite beams based on the moment-curvature relationship of a composite beam section under positive and negative moments. Steel columns are modeled using the plastic hinge approach. To ascertain the accuracy of the composite beam model, two composite beams and a steel portal frame are analyzed and the results are compared with those obtained from tests and the more established results. Finally, the robustness of the model is demonstrated by studying 2D and 3D building frames using various floor beam models so that their effects on the serviceability deflection and limit load can be compared.
67 citations
TL;DR: A distributed plasticity model was developed using shell finite elements to explicitly account for the effects of gradual yielding and spread of plasticity, initial geometric imperfections, residual stresses and local buckling deformations and was verified by comparison with large-scale steel frame test results and a variety of existing analytical benchmark solutions.
65 citations
TL;DR: In this article, the authors provided benchmark solutions of space steel frames using second-order distributed plasticity analysis and showed that the AISC-LRFD method is 25∼31% conservative when compared with those of the proposed analysis.
63 citations