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https://ptsldigital.ukm.my/jspui/handle/123456789/487264| Title: | Behaviour of steel-concrete composite plate girders with partial interaction |
| Authors: | Mohd Yazmil Md Yatim (P52839) |
| Supervisor: | N.E. Shanmugam, Prof. Dr. |
| Keywords: | Behaviour of steel-concrete Steel-concrete composite plate girders Partial interaction Universiti Kebangsaan Malaysia -- Dissertations |
| Issue Date: | 30-Jun-2014 |
| Description: | The thesis is concerned with the ultimate strength and behaviour of steel-concrete composite plate girders with partial interaction. In general, the performance of a composite plate girder is greatly governed by the individual strength of concrete slab and steel girder as well as the shear connection stiffness between the interacting elements. Combination of post-buckling effect in the thin web and composite action results in complex behaviour of the girders. Analysis of such behaviour becomes more difficult particularly when the composite interaction is partial. It is, therefore, necessary to understand the behaviour of such girders so that a simple method could be developed for design office use. A closed form solution for the ultimate load behaviour of these girders is well-nigh impossible. In this work, an analytical method to predict the ultimate load capacity and bending behaviour of composite plate girders is proposed. Based on the principle of curvature compatibility, the analytical method is developed by considering partial effects in the composite interaction and post-buckling strength of the steel girder. A series of tests were carried out on eight simply supported composite plate girders in order to gain an insight into the behaviour of the girders under partial interaction. Effects of spacing and size of shear connectors and concrete strength on the overall behaviour of the girders were investigated. Extensive measurements of deflection, slip and strain were made in the experiments. Test results have shown variations in ultimate strength, behaviour and failure characteristic in all the specimens due to partial interaction. Three-dimensional finite element model is proposed using the general purpose computer package, LUSAS to carry out non-linear analysis on composite plate girders. Important aspects of modelling such as selection of element, appropriate material model, assignment of load and boundary condition as well as consideration of composite interaction and initial imperfection are discussed. The proposed analytical method is approximate, thus the accuracy is established through comparisons with the corresponding experimental and finite element results. Comparison of results in terms of ultimate strength and load-deflection behaviour shows good correlation within ±10% error in most cases, thus confirming the accuracy of the analytical method. For additional cases, composite plate girders tested by other researchers are also considered and analysed under different loading conditions. Different degrees of interaction are taken into account in the analysis by varying the longitudinal spacing of shear connectors. Presence of central web openings of square and circular shape is also accounted for.,PhD |
| Pages: | 236 |
| Publisher: | UKM, Bangi |
| Appears in Collections: | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_74798+Source01+Source010.PDF Restricted Access | 7.94 MB | Adobe PDF |  View/Open |
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