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Behaviour of flush end-plate connection for perforated section

Behaviour of flush end-plate connection for perforated section / Lai Chun Leong
Disertasi ini membentangkan kajian mengenai kelakuan sambungan tiang-rasuk dengan menggunakan sambungan flush end plate pada rasuk I dengan keratan rasuk berlubang. Kajian ini adalah momen-putaran dan corak kegagalan sambungan flush end plate pada seksyen berlubang. Model ini telah dimodelkan dengan menggunakan perisian LUSAS dan kemudian dianalisis dengan kaedah unsur terhingga linear. Sembilan belas model daripada analisis LUSAS telah dijalankan untuk sambungan flush end plate dengan keratan rasuk berlubang terdiri daripada parameter pembolehubah seperti saiz pembukaan, jarak antara pembukaan pertama dan permukaan tiang, dan jarak antara bukaan. Momen rintangan dan kekukuhan putaran sambungan dikurangkan dengan kehadiran bukaan. Kekuatan dan ketegaran sambungan mengurangkan sehingga 20% dan 37.94% masing-masing dengan kehadiran bukaan. Parameter geometri bukaan menjejaskan kelakuan daripada sambungan secara berbeza. Ia didapati bahawa pembukaan yang lebih besar akan menurunkan kekuatan dan ketegaran sambungan. Untuk rasuk dengan saiz bukaan yang lebih besar mempunyai kekuatan dan ketegaran sehingga 10.5% dan 29.35% masing-masing berbanding dengan rasuk berlubang dengan saiz bukaan yang lebih kecil. Tambahan pula, didapati bahawa kehadiran bukaan menyebabkan kenaikan dalam pesongan rasuk (24.5% kepada 680,8%). Walau bagaimanapun, beberapa rasuk berlubang yang mempunyai parameter geometri optimum bagi bukaan mempunyai nisbah kekuatan-berat dan nisbah ketegaran-berat yang lebih tinggi daripada rasuk biasa tanpa penembusan. Dalam kajian ini, parameter geometri yang paling berkesan untuk bukaan adalah bukaan saiz 0.65h, jarak antara pembukaan dan permukaan tiang yang pertama 800 mm dan jarak antara bukaan 1.3h (h adalah kedalaman rasuk). Nisbah kekuatan-berat dan nisbah ketegaran-berat bagi model tersebut adalah 2.71% dan 5.96% lebih tinggi daripada rasuk biasa tanpa penembusan. Namun, pesongan model tersebut adalah 30% lebih tinggi daripada rasuk biasa tanpa penembusan. _______________________________________________________________________________________________________ This dissertation presents the study on the behaviour of the beam to column connection by using flush end plate connection for I-beam steel section with perforation. Moment rotation and failure pattern of flush end plate connection for perforated section were studied. The model was modelled by using LUSAS software and then analysed with nonlinear finite element analysis. Nineteen models were generated for flush end plate connection with perforated beam section consisting of variable parameters such as opening size, distance between the first opening and column face, and spacing between the openings. The moment resistance and rotational stiffness of the connection are found to be reduced by the presence of the openings. The strength and rigidity of the connections reduce up to 20% and 37.94% respectively due to the presence of the openings. The geometric parameter of the openings affected the behaviour of the connections in different ways. It is found that the larger the opening size, the lower the strength and rigidity of the connection. Perforated sections with larger opening size show strength and rigidity up to 10.5% and 29.35% respectively compared to perforated section with smaller opening size. Furthermore, it is found that the presence of openings causes increment in the deflection of the beam (24.5% to 680.8%). However, some perforated sections with optimum geometric parameters for openings have higher strength to weight and rigidity to weight ratio than normal section without perforation. In this study, the most effective geometric parameter for openings in this study are found to be opening size of 0.65h, distance between the first opening and column face of 800mm and spacing between openings of 1.3h (h is the depth of the beam web). The strength to weight and rigidity to weight ratio of the model is 2.17% and 5.96% higher than normal section without perforation. However, the deflection of the model is 30% higher than normal section without perforation.
Contributor(s):
Lai Chun Leong - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875006550
Language:
English
Subject Keywords:
beam; column connection; flush end plate connection
First presented to the public:
6/1/2016
Original Publication Date:
5/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 128
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-05-24 15:44:27.454
Date Last Updated
2020-06-19 16:00:00.288
Submitter:
Mohd Jasnizam Mohd Salleh

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