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https://ptsldigital.ukm.my/jspui/handle/123456789/487107Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Siti Aminah Hj Osman, Assoc. Prof. Dr. | - |
| dc.contributor.author | Mustafa Mohammed Ali Abid Alsamaq (P86577) | - |
| dc.date.accessioned | 2023-10-11T02:28:56Z | - |
| dc.date.available | 2023-10-11T02:28:56Z | - |
| dc.date.issued | 2021-01-27 | - |
| dc.identifier.other | ukmvital:123023 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/487107 | - |
| dc.description | A composite twin-layer steel-sheet frame concrete infill wall, in which these materials integrally interact, provides significant advantages as a cyclic load resistant and dissipative energy structural element. This study describes the cyclic performance of a half-scale specimens of Twin-layer Flat Steel-sheet Composite Wall (TFSCW) system with an opening strengthened by diagonal stiffeners. Concrete filled steel plate shear walls system has been investigated by other researchers concentrating on solid unframed walls which experienced severe failure at the wall's toe. However, the presence of the opening can deteriorate the performance of the wall significantly. Generally, openings in walls are usually used for decoration purposes, crossing multiple utilities and/or structural aims. This study aims to investigate the structural behavior of the TFSCW system with 1504 H × 1750 L overall dimensions , infilled with recycled-lightweight concrete (with polystyrene), in the presence of the opening and strengthened by the perfobond diagonal steel plate stiffeners under in-plane lateral cyclic loading. The experimental parameters were the existence of the recycled lightweight concrete core, the application of a central circular opening, and the implementation of the perfobond diagonal steel plate stiffeners. A total of four specimens (fixed supports) were tested under pure lateral cyclic load. The experimental findings were employed to verify the developed Finite Element (FE) models in this study. A total of 32 nonlinear FE models were developed using ABAQUS software to investigate the effects of other parameters not considered experimentally. The FE models were then used to develop a new theoretical formula to predict the lateral shear capacity of the TFSCWs system in presence and absence of the opening and the diagonal stiffeners. The results show that using the recycled-lightweight concrete as a concrete core in the TFSCW system can improve the ultimate cyclic capacity and the cumulative dissipated energy by more than 60% and 43%, respectively. Also, the opening in the TFSCW deteriorated the TFSCW cyclic load capacity and energy dissipation by around 16%. However, adopting the strengthening method of perfobond diagonal steel plate stiffeners in the TFSCW with the opening has managed to increase the lateral shear strength by 19% and the cumulative dissipated energy by 7%. Additionally, increasing the concrete core compressive strength can fairly improve the lateral shear capacity, despite the limitation of the strength of the adopted type of concrete, while higher SSP yielding strength showed higher enhancement in cumulative dissipated energy. Moreover, employing thicker SSP in TFSCWs has improved the ultimate cyclic strength significantly and enhanced, even more, the wall as sufficient energy dissipative structural element. Finally, results predicted from the suggested theoretical formula are consistent with those obtained from the experimental tests of the TFSCWs in the current and other similar studies, with a mean value of 0.980 for the lateral shear capacity. In conclusion, the composition of recycled lightweight concrete-filled twin-layer of SSP with opening and the perfobond diagonal stiffeners can be considered a reliable choice for the double-skinned composite walls. Therefore, the TFSCW-FOD specimen composition is highly recommended to be used in construction industries as a perforated shear wall.,Ph.D. | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | - |
| dc.rights | UKM | - |
| dc.subject | Universiti Kebangsaan Malaysia -- Dissertations | - |
| dc.title | Structural behaviour of twin-layer flat steel-sheet composite wall system (TFSCWs) with opening under in-plane lateral cyclic loading | - |
| dc.type | Theses | - |
| dc.format.pages | 278 | - |
| dc.identifier.barcode | 005679(2021)(PL2) | - |
| Appears in Collections: | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_123023+SOURCE1+SOURCE1.0.PDF Restricted Access | 2.62 MB | Adobe PDF |  View/Open |
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