Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Nonlinear Analysis And Behavior Of Concrete-Filled Steel Tubular Beam-Columns, Qing Quan Liang, Muhammad N. S Hadi
Nonlinear Analysis And Behavior Of Concrete-Filled Steel Tubular Beam-Columns, Qing Quan Liang, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents a nonlinear fiber element analysis method for predicting the behavior of short concrete-filled steel tubular (CFST) beam-columns under axial load and biaxial bending. Nonlinear constitutive models for confined concrete and structural steel are considered in the fiber element analysis. Efficient secant algorithms are developed to iterate the depth and orientation of the neutral axis within the composite section to satisfy equilibrium conditions. The accuracy of the fiber element method is established by comparisons with existing solutions. The fiber element analysis program developed is employed to study the effects of steel ratios and concrete strengths on the axial …
Strengthening Reinforced Concrete T Connections By Steel Straps, Muhammad N. S Hadi
Strengthening Reinforced Concrete T Connections By Steel Straps, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
The aim of this paper is to present results of testing a full scale reinforced concrete T connec-tion by static loading. The connection is a T connection representing a beam-column connection. The beam and column had a square cross section with a 300 mm dimension. The height of the column was 2.9 m and the clear beam length was 1.4 m. The connection was initially tested to failure. Galvanised steel straps were used to strengthen the connection. Epoxy resin was used to fix the steel straps to the concrete surface. The connec-tion was tested after the rehabilitation. Results of testing …
Behaviour Of Fibre Reinforced Concrete Slabs, Muhammad N. S Hadi
Behaviour Of Fibre Reinforced Concrete Slabs, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents a comparison of the properties of concrete slabs when two types of fibres are added. One specimen had no fibres and acted as a control specimen. The remaining four specimens had steel and polypropylene fibres added in the volumetric ratio of 0.5% and 1.0%. The dimensions of the slab specimens were 82082080 mm and were supported by four rollers at their edges. A displacement controlled point load was applied at the centre of the slabs. The ductilities of the tested slabs were calculated and compared so as their load carrying capacities. Results of the experimental programme were …
Simulation Of The Reinforced Concrete Slabs Under Impact Loading, Faham Tahmasebinia, Alexander Remennikov
Simulation Of The Reinforced Concrete Slabs Under Impact Loading, Faham Tahmasebinia, Alexander Remennikov
Faculty of Engineering - Papers (Archive)
Many older structures were designed for static loads but more recently there has been a growing awareness that some must be designed to resist both dynamic impact and static loads. An accidental impact load can be caused by mishaps in industry as well as accidents stemming from transportation or man-made disasters. There are number of ways of predicting how an impact load will affect a concrete slab, some of which may be impractical or expensive but because there have been significant developments in technology, numerical techniques rather than experimental approaches have become popular methods for developing detailed responses Therefore, to …
Bond Of High Strength Concrete With High Strength Reinforcing Steel, Muhammad N. S Hadi
Bond Of High Strength Concrete With High Strength Reinforcing Steel, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents a study about the bond of high strength concrete with high strength steel. Fourteen pull out tests were carried out to determine the bond. The concrete strength was about 70 MPa and the steel was a 500 MPa grade. Bar diameters used were 12, 16, 20, 25, 28, 32 and 36 mm. In order to investigate the effect of cover, each test was done twice, once in a 240 mm diameter concrete cylinder and the second in a 300 mm diameter cylinder. Based on the test results a new equation representing the bond is proposed.