1. UKM Learning and Research Repository
2. PHD Thesis / Tesis PHD
3. Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

Title:	Membrane Action In The Profiled Steel Sheeting Dry Board (PSSDB) Floor System
Authors:	Mahmood Seraji (P49948)
Supervisor:	Wan Hamidon Wan Badaruzzaman, Prof. Ir. Dr.
Keywords:	Membrane Action In The Profiled Steel Sheeting Dry Board Profiled Steel Sheeting Dry Board Floor System PSSDB Floor System Membrane Action In The PSSDB Composite materials
Issue Date:	7-Dec-2013
Description:	The Profiled Steel Sheeting Dry Board (PSSDB) system consists of profiled steel sheeting and dry board attached together by self-drilling and self-tapping screws as the basic structural components. Various materials may be used as an infill in the troughs of the deck to enhance stiffness and strength of the system and to act as insulation materials against sound and heat. Review of the literatures found vast earlier analytical and experimental studies on the behaviour of the PSSDB system including studying the interaction between components, the behaviour of a simple and continuous PSSDB floor, the effect of various infill materials on the stiffness, strength, heat/fire and sound resistance, comfortableness of the floor system, and etc. However, the potential of the PSSDB floor to develop 'membrane action' in order to improve the flexural capacity of the system has not been considered so far. This research is with the objective to assess the membrane action effect in order to develop a better performance PSSDB floor. Normally, mid-span deflection of simply supported floors subjected to bending load is correlated with the horizontal movements of the floor at the supports. In other words, as the mid-span deflection increases, the slab ends tend to move outward and inward in the first and last steps of loading respectively. Restricting the horizontal movements and/or rotation of the slab ends causes the formation of the compressive membrane action (arching action) in the slab in the first steps of loading. The flexural capacity of the slab also enhances after the deformation of the arch due to the development of tensile membrane action in the slab in last steps of loading. To achieve the defined objective, experimental and nonlinear finite element approaches were employed in this study. An experimental test on simply supported PSSDB floor with concrete infill verified the proposed finite element model within 91% accuracy. In addition, two (2) experimental tests on concrete-filled PSSDB floor with restrained ends ('pinned-pinned' and 'fixed-fixed' supports) confirmed the existence of the membrane action, with results showing enhancement in flexural rigidity of more than 70% in the 'fixed-fixed' situation. Parametric studies were then conducted to further investigate (for the three said boundary conditions) the effect of various parameters on the development of membrane action in the PSSDB floor, namely (i) concrete infill, (ii) concrete topping, (iii) thickness of components, and (iv) continuous configuration of the PSSDB floor system. For cases (ii), (iii) and (iv), the models involved concrete-filled PSSDB floors. The parametric studies revealed, at best, i.e. in the fixed-fixed support condition, the concrete infill enhanced the flexural capacity by up to 294%, while the improvement was found to be 161% in the case when topping was introduced to the concrete-filled floor. Furthermore, varying the dry board thickness did not have any notable effect on the flexural strength, while the effect was found considerable with change in the profiled steel sheeting's thickness. In the case of continuous configuration of the floor, the membrane effect was significant (87% increase) when the end supports were fixed.,PhD
Pages:	181
Call Number:	TA418.9.C6 .S468 2013 3
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.