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Title:	Flexural performance of Profiled Steel Sheeting Dry Board (PSSDB) system as two-way floor panel
Authors:	Marwan Samir Mahmmoud (P73106)
Supervisor:	Wan Hamidon Wan Badaruzzaman, Prof. Dato' Ir. Dr.
Keywords:	Steel structural Composite materials Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	13-Jun-2018
Description:	This study is concerned with the structural behaviour of Profiled Steel Sheeting Dry Board (PSSDB) system, a lightweight composite structure that is constructed by connecting Profiled Steel Sheeting (PSS) to a Dry Board (DB) using self-tapping and self-drilling screws. It was originally intended to be used in lightweight offices and domestic buildings as an alternative to the timber joist floors. Many studies have been conducted showed that in addition to the application as floor panels, the PSSDB system has also the potential to be employed as walling and roofing units. However, most of the studies concerning the PSSDB flooring system have been focused on utilising the system as one-way panel. It is rare to find research that considered the two-way situation. Furthermore, only small-scale samples of a two-way PSSDB floor had been studied previously, and no further research in that direction has been conducted so far. Therefore, the purpose of this study is to investigate the flexural performance of the two-way PSSDB flooring system subjected to out-of-plane point load by conducting experimental tests and numerical analysis using Finite Element (FE). Six different square PSSDB samples with dimensions of 2000 mm x 2000 mm were prepared for the experimental approach; two types of DB (Primaflex and Plywood) were used; a steel plate was fixed at the bottom for three samples, while two samples were filled with lightweight expanded polystyrene concrete in the PSS grooves. It was found from the experimental results that utilising Primaflex as DB can enhance the stiffness and load carrying capacity by approximately 15% and 38%, respectively, when compared to Plywood DB. Applying SP can reduce the specimen bending in the weak direction, and depending on the type of DB, it can enhance the stiffness by up to 38%. In addition, applying infill material can increase the strength by 13.2%, whereas employing both infill and SP can increase the strength up to 13.6% than applying SP alone. As for the FE approach, ABAQUS software was used to create four FE models which were validated with the experimental specimens. It was shown that the maximum variation between the experimental and FE results is only 8%. After that, four parametric studies were conducted to inspect the factors that influence the two-way bending behaviour of the PSSDB system such as the type of infill material, the DB depth, the PSS and SP thickness. It was found that increasing the thickness of DB for the hollow samples (without infill) can enhance the load capacity by approximately up to 9%, whereas increasing the thickness of the DB for the infill samples resulted in minor enhancement by less than 3.5%. Furthermore, increasing the thickness of the PSS results in a significant enhancement in load capacity by approximately 17% and 18% for the hollow and infill samples, respectively. Increasing the SP thickness on the other hand can enhance the load capacity by 4.5% at most. It was also found that increasing the strength of the infill concrete has a minor effect by less than 7%. Finally, applying uniform load can enhance the ultimate load by more than 50%. This study has demonstrated the potential of the PSSDB system to be employed as two-way floor panel.,Ph.D.
Pages:	167
Call Number:	TA418.9.C6M223 2018 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

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