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Showing 1 to 11 of 11 for “"Portal frames"”.
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Design optimisation of steel portal frames using modified distributed genetic algorithms
… to the optimum solution for structural steel frames. This was achieved by introducing some novelties of the main algorithm of distributed genetic algorithms and applying them in structural optimisation. Among these are the creation of new mutation schemes, adding a crossover scheme, definition …
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The permanent deformation of steel portal frames subjected to impulsive loading
The inelastic response of steel portal frames with a mass attached to the centre of the beam member and subjected to large dynamic loads is studied. The analysis is carried out using the mode approximation technique extended to include strain-rate sensitivity, finite deflections and pulse duration. …
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A computational study of the behaviour of hot-rolled portal frames in fire
… can confidently design hot-rolled steel portal frame structure if it is kept at ambient temperature. However, as they are not aware of the potential collapse behaviour of such frames in fire, they tend to use heavy foundations with expensive fire protection materials applied to all the …
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Theoretical and Experimental Analyses of Statically Indeterminate Portal Frames Made of Materials That Creep
Made available in DSpace on 2014-12-10T17:25:35Z (GMT). No. of bitstreams: 1 6604301.pdf: 5875913 bytes, checksum: a17375ada0c0caeb296769b5bbd01b4f (MD5) Previous issue date: 1965
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Investigating the Performance of Wood Portal Frames as Alternative Bracing Systems in Light-Frame Wood Buildings
… large openings in walls are introduced. Wood portal frame systems have been identified as a potential alternative to meet some aspects of this construction demand. The overarching goal of the research is to develop wood portal frame bracing systems, which can be used as an alternative or in …
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Effect of stressed skin action on the behaviour of cold-formed steel portal frames with non-linear flexible joints and top-hat purlins
A conceptual design of a cold-formed steel (CFS) portal frame system proposed by the industrial partner is to be investigated and improved in light of known design challenges. Unlike previous studies which focused on the behaviour of CFS bare frame, this thesis focuses on the design and analysis …
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Finite Element Analysis of the Application of Synthetic Fiber Ropes to Reduce Blast Response of Frames
… lateral loads. Finite element models of portal frames were developed using the commercial finite element program ABAQUS and dynamic models were run for varying blasts and frame systems. Blast pressures of 100, 2,000, and 4,000 psi were applied to a steel portal frame and comparisons were …
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Stability Sensitivity Of Low-Rise Steel-Moment Framed Buildings To Hazard-Independent Damage
… the analytical finite element formulation of a portal frame to account for hazard-independent damage. Second-order geometric effects are included in this formulation. This finite element formulation is created using Mathematica and its formulation is verified against idealized elastic critical …
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Glued-in re-bar connection
… horizontal forces, and knee joints as used in a portal frame, loaded with positive and negative moment. Steel failures were observed consistently. A typical portal frame was designed in order to tie the research to practical applications. Internal forces from this analysis were then used as a …
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The inverse medium problem for Timoshenko beams and frames : damage detection and profile reconstruction in the time-domain
We discuss a systematic methodology that leads to the reconstruction of the material profile of either single, or assemblies of one-dimensional flexural components endowed with Timoshenko-theory assumptions. The probed structures are subjected to user-specified transient excitations: we use the …
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The Influence of Semi-Rigid Connections on the Behaviour of Beam and Column Structural System
… the effects on the general behaviour of racking frames. A comprehensive literature review in semi-rigid joint behaviour was undertaken for heavy and light steel structures. This literature survey showed that most of the previous work in boltless beam end connectors and their applications in …