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Full-Text Articles in Engineering
Effect Of Eccentric Load On Retrofitted Reinforced Concrete Columns Confined With Frp, Thong M. Pham, X Lei, Muhammad N. S Hadi
Effect Of Eccentric Load On Retrofitted Reinforced Concrete Columns Confined With Frp, Thong M. Pham, X Lei, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
Different behaviour of diverse sections of confined Reinforced Concrete (RC) columns under eccentric load is investigated in this study. Three types of sections are considered, which include square columns, square with rounded corners and modified circular columns. Twelve reinforced square concrete columns were made from normal strength concrete and subdivided into four groups. The first three columns were the Reference Group and had no modification.The next three columnswere modified with round corners and wrapped with three layers of Carbon Fibre Reinforced Polymer (CFRP), another three were bonded with four pieces of segmental circular concrete covers and wrapped with three layers …
Effect Of Ply Configuration On Hollow Square Reinforced Concrete Columns Confined With Carbon Fibre-Reinforced Polymer (Cfrp), T D. Le, M T. Lester, Muhammad N. S Hadi
Effect Of Ply Configuration On Hollow Square Reinforced Concrete Columns Confined With Carbon Fibre-Reinforced Polymer (Cfrp), T D. Le, M T. Lester, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents results of testing twelve hollow square reinforced concrete specimens wrapped with Carbon fibre reinforced polymer CFRP. The effect of ply configuration on the behaviour of the specimens is investigated. All specimens were 800mm high and had the dimensions of 200mm×200mm in cross-section and a hollow core of 80mm×80 mm. The specimens were divided into four groups with three specimens each. The specimens in the first group without bonding CFRP served as references. While the remaining three groups of specimens were externally wrapped with CFRP in three different ply configurations of hoop, vertical and 45◦ angle with reference …
High Strength Thin-Walled Rectangular Concrete-Filled Tubular Slender Beam-Columns, Part Ii: Behaviour, Muhammad N. S Hadi, Qing Quan Liang, Vipulkumar I. Patel
High Strength Thin-Walled Rectangular Concrete-Filled Tubular Slender Beam-Columns, Part Ii: Behaviour, Muhammad N. S Hadi, Qing Quan Liang, Vipulkumar I. Patel
Faculty of Engineering - Papers (Archive)
Experimental and numerical research on full-scale high strength thin-walled rectangular steel slender tubes filled with high strength concrete has not been reported in the literature. In a companion paper, a new numerical model was presented that simulates the nonlinear inelastic behavior of uniaxially loaded high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beam-columns with local buckling effects. The progressive local and post-local buckling of thin steel tube walls under stress gradients was incorporated in the numerical model. This paper presents the verification of the numerical model developed and its applications to the investigation into the fundamental behavior of high …
Limit States Design Of Railway Concrete Sleepers, Sakdirat Kaewunruen, Alexander Remennikov, Martin H. Murray
Limit States Design Of Railway Concrete Sleepers, Sakdirat Kaewunruen, Alexander Remennikov, Martin H. Murray
Faculty of Engineering - Papers (Archive)
The recently updated information has raised a concern in not only the existing costineffective design method but also the unrealistic analysis mode of railroad prestressed concrete sleepers. Because of the deficient knowledge in the past, railway civil engineers have been mostly aware of the over conservative design methods for structural components in any railway track, which rely on allowable stresses and material strength reductions. Based on a number of proven experiments and field data, it is believed that the concrete sleepers complied with the allowable stress concept possess the unduly untapped fracture toughness. A collaborative research run by the Australian …
Performance Of Cfrp Wrapped Square Reinforced Concrete Columns Subjected To Eccentric Loading, Ida Bagus Rai Widiarsa, Muhammad N. S Hadi
Performance Of Cfrp Wrapped Square Reinforced Concrete Columns Subjected To Eccentric Loading, Ida Bagus Rai Widiarsa, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
Strengthening concrete columns with fibre-reinforced polymer (FRP) has been tudied extensively, but the majority of published tudies have focllsed on circular column. Most concrete columns in the field have square 01' r ctangul3r cross ections and resist ecc nt.ric loading as well. The objective of this study i to investigate the performance of square reinforced concrete (RC) columns wrapped with carbon FRP subjected to eccentric Loading. The influence of two parameters was studied including the number of FRP layers and the magnitude of eccentricity. Compression testing was conducted on twe Ive short quare RC columns wrapped with CFRP composites. The …
Inelastic Stability Analysis Of High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi
Inelastic Stability Analysis Of High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
There is relatively little numerical study on the behavior of eccentrically loaded high strength rectangular concrete-filled steel tubular (CFST) slender beam-columns with large depth-to-thickness ratios, which may undergo local and global buckling. This paper presents a multi scale numerical model for simulating the interaction local and global buckling behavior of hlgh strength thin-walled rectangular CFST slender beam-columns under eccentric loading. The effects of progressive local buckling are taken into account in the mesoscale model based on fiber element formulations. Computational algorithms based on the Muller's method are developed to obtain complete load-deflection responses of CFST slender beam-columns at the macroscale …
Armouring By Precipitates And The Associated Reduction In Hydraulic Conductivity Of Recycled Concrete Aggregates Used In A Novel Prb For The Treatment Of Acidic Groundwater, Punyama Pathirage, Buddhima Indraratna, Long Duc Nghiem, Laura Banasiak, Gyanendra Regmi
Armouring By Precipitates And The Associated Reduction In Hydraulic Conductivity Of Recycled Concrete Aggregates Used In A Novel Prb For The Treatment Of Acidic Groundwater, Punyama Pathirage, Buddhima Indraratna, Long Duc Nghiem, Laura Banasiak, Gyanendra Regmi
Faculty of Engineering - Papers (Archive)
Acidic groundwater generated from acid sulphate soil (ASS) is a major geo-environmental problem in Australia. A permeable reactive barrier (PRB) with recycled concrete aggregates as the reactive material has received considerable attention as an innovative, cost effective technology for passive treatment of acidic groundwater in ASS terrain. Laboratory column experiments conducted at the University of Wollongong investigated the acid neutralisation behaviour of recycled concrete and its potential to remove dissolved aluminium (Al) and iron (Fe). The recycled concrete effectively treated the acidic groundwater, resulting in near-neutral effluent pH and complete removal of Al and Fe. However, armouring of the concrete …
Comparative Behaviour Of Frp Confined Square Concrete Columns Under Eccentric Loading, X Lei, Thong M. Pham, M N. S Hadi
Comparative Behaviour Of Frp Confined Square Concrete Columns Under Eccentric Loading, X Lei, Thong M. Pham, M N. S Hadi
Faculty of Engineering - Papers (Archive)
This study evaluates different methods of strengthening existing square concrete columns under eccentric loading. Sixteen reinforced square concrete columns were cast. The columns were made from normal strength concrete and the reinforcement was kept at minimum simulating columns needing retrofitting. Four columns were modified with round comers and wrapped with three layers of CFRP, four were circularised by circular segments and wrapped with three layers of CFRP, and the last four columns were circularised and confined with steel straps. Specimens from each group were tested under concentric, eccentric (15 or 25 mm) and flexural bending. Results from the study showed …
Normalized Confinement Stiffness Approach For Modeling Frp-Confined Concrete, Veysel Yazici, Muhammad N. S Hadi
Normalized Confinement Stiffness Approach For Modeling Frp-Confined Concrete, Veysel Yazici, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
Passive confinement provided by fiber-reinforced polymer (FRP) jackets increases the compressive strength and axial deformation capacity of concrete. This study explains a normalized confinement stiffness approach to quantify the strength and strain increase of FRP confined concrete using a previously proposed and most widely-used model for both active and passive confinement of concrete, and claims that these equations can still be used for FRP-confined concrete with very simple modifications. A comparison of the proposed model's accuracy to American Concrete Institute guidelines was made using experimental results reported in the literature. The proposed modified model was shown to be quite effective …
Stress-Strain Model For Concrete Under Cyclic Loading, Farhad Aslani, Raha Jowkarmeimandi
Stress-Strain Model For Concrete Under Cyclic Loading, Farhad Aslani, Raha Jowkarmeimandi
Faculty of Engineering - Papers (Archive)
A hysteretic stress-strain model is developed for unconfined concrete with the intention of providing efficient modelling for the structural behaviour of concrete in seismic regions. The proposed model is based on the findings of previous experimental and analytical studies. The model for concrete subjected to monotonic and cyclic loading comprises four components in compression and tension - an envelope curve (for monotonic and cyclic loading), an unloading curve, a reloading curve and a transition curve. Formulations for partial unloading and partial reloading curves are also presented. The reliability of the proposed constitutive model is investigated for a reinforced concrete member …
Behaviour Of Frp Confined Concrete Cylinders Under Different Temperature Exposure, Muhammad N. S Hadi, B A. Louk Fanggi
Behaviour Of Frp Confined Concrete Cylinders Under Different Temperature Exposure, Muhammad N. S Hadi, B A. Louk Fanggi
Faculty of Engineering - Papers (Archive)
Bridge structures are exposed to the elements with a high variation in temperature. The purpose of this study is to investigate the effect of different high temperatures on the behaviour of concrete cylinders wrapped with Fibre Reinforced Polymer (FRP). Twelve concrete cylinders made of 60 MPa having 100 mm diameter and 200 mm height were cast and tested. The cylinders were divided into four groups: cylinders wrapped with a single CFRP layer, cylinders wrapped with two CFRP layers, cylinders wrapped with a single GFRP layer, and cylinders wrapped with two GFRP layers. Each group was exposed to temperatures of 20°C, …
Treatment Of Acidic Groundwater In Acid Sulfate Soil Terrain Using Recycled Concrete: Column Experiments, Gyanendra Regmi, Buddhima Indraratna, Long Nghiem, A. Golab, B Guru Prasad
Treatment Of Acidic Groundwater In Acid Sulfate Soil Terrain Using Recycled Concrete: Column Experiments, Gyanendra Regmi, Buddhima Indraratna, Long Nghiem, A. Golab, B Guru Prasad
Faculty of Engineering - Papers (Archive)
Acidic groundwater generated from pyrite oxidation in acid sulfate (AS) soil is a major geoenvironmental problem in Australia. This study aims to evaluate recycled concrete as a reactive material in permeable reactive barriers (PRBs) for the remediation of acidic groundwater in low-lying AS soil floodplains. Laboratory experiments were systematically conducted to investigate the acid neutralization behavior of recycled concrete and its potential to remove dissolved Al and Fe. The results confirmed that recycled concrete could effectively treat acidic groundwater from an AS soil terrain, resulting in near neutral effluent over a long period with complete removal of Al and Fe. …
Evaluating Waste Concrete For The Treatment Of Acid Sulphate Soil Groundwater From Coastal Floodplains, Gyanendra Regmi, Buddhima Indraratna, Long Nghiem, Laura Banasiak
Evaluating Waste Concrete For The Treatment Of Acid Sulphate Soil Groundwater From Coastal Floodplains, Gyanendra Regmi, Buddhima Indraratna, Long Nghiem, Laura Banasiak
Faculty of Engineering - Papers (Archive)
The treatment of acidic groundwater generated from acid sulphate soil (ASS) terrain is a challenging environmental issue in coastal floodplains of Australia. In this study, a laboratory column experiment was conducted to assess the performance of waste concrete for treating the acidic groundwater leachate from ASS terrain of the Shoalhaven region of NSW. The groundwater was highly acidic (pH of 2.5–3.5) and contained elevated concentrations of iron (10–90 mg/L) and aluminium (30–45 mg/L). Passage of the acidic groundwater through the column filled with waste concrete resulted in a significant improvement in water quality. Reduction in the concentration of iron and …
Rehabilitating Destructed Reinforced Concrete T Connections By Steel Straps, Muhammad N. S Hadi
Rehabilitating Destructed 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 connection by static loading. The connection represents 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 rehabilitate the connection. Epoxy resin was used to fix the steel straps to the concrete surface. The connection was tested after the rehabilitation. Results of testing the rehabilitated connection show …
The Behaviour Of Carbon Fibre Reinforced Polymer Confined Concrete Cylinders Under High Temperature Exposure, Butje Alfonsius Louk Fanggi, Muhammad N. S Hadi
The Behaviour Of Carbon Fibre Reinforced Polymer Confined Concrete Cylinders Under High Temperature Exposure, Butje Alfonsius Louk Fanggi, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This study investigates the effect of temperature on the behaviour of concrete cylinders wrapped with Carbon Fibre Reinforced Polymer (CFRP). The study used nine concrete cylinders in three groups; the first group was exposed to room temperature of approximately 20ºC, the second group was exposed to a cyclic temperature with a temperature range of 20ºC to 70ºC, and the third group was exposed to a prolonged temperature of 70ºC. All cylinders were then tested to failure. The study indicated that ultimate strength of cylinders wrapped with one and two layers of CFRP are significantly unchanged after being exposed to 20ºC …
A Decision Support Methodology For Remediation Planning Of Concrete Bridges, Maria Rashidi, Brett P. Lemass
A Decision Support Methodology For Remediation Planning Of Concrete Bridges, Maria Rashidi, Brett P. Lemass
Faculty of Engineering - Papers (Archive)
Bridges are critical and valuable components in any road and rail transportation network. Therefore bridge remediation has always been a top priority for asset managers and engineers, but identifying the nature of true defect deterioration and associated remediation treatments remains a complex task. Nowadays Decision Support Systems (DSS) are widely used to assist decision makers across an extensive spectrum of unstructured decision environments. The main objective of this research is to develop a requirements-driven methodology for bridge monitoring and maintenance which has the ability to assess the bridge condition and find the best remediation treatments using Simple Multi Attribute Rating …
Experimental Study Of High-Strength Concrete Columns Confined With Different Types Of Mesh Under Eccentric And Concentric Loads, Muhammad N. S Hadi, Hua Zhao
Experimental Study Of High-Strength Concrete Columns Confined With Different Types Of Mesh Under Eccentric And Concentric Loads, Muhammad N. S Hadi, Hua Zhao
Faculty of Engineering - Papers (Archive)
A new idea is investigated in this study to reduce the cover spalling of high-strength concrete columns: installing relatively cheap materials such as household fly screen and wire mesh in the formwork of RC columns. Three materials were chosen in this study: fiberglass fly mesh (FGFM), standard aluminum fly mesh (SAFM), and 12:7 x 12:7 galvanized steel wire mesh (S12.7 WM). A total of 16 cylindricalspecimens with a length of 925 mm and a diameter of 205 mm were cast and tested under concentric, eccentric, and pure bending loading. The testing results showed that S12.7 WM significantly improved the load-carrying …
External Reinforcement Of Concrete Columns, Muhammad N. S Hadi
External Reinforcement Of Concrete Columns, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
With the technology development on the compressive strength of concrete over the years, the use of high strength concrete has proved most popular in terms of economy, superior strength, stiffness and durability due to many advantages it could offer. However, strength and ductility are inversely proportional. High strength concrete is a brittle material causing failure to be quite sudden and ‘explosive’ under loads. It is also known that structural concrete columns concentrically compressed rarely occur in practice. The stress concentrations caused by the eccentric loading further reduce the strength and ductility of high strength concrete. Therefore, studies for high strength …
A Decision Support System For Concrete Bridge Maintenance, Maria Rashidi, Brett P. Lemass, Peter R. Gibson
A Decision Support System For Concrete Bridge Maintenance, Maria Rashidi, Brett P. Lemass, Peter R. Gibson
Faculty of Engineering - Papers (Archive)
The maintenance of bridges as a key element in transportation infrastructure has become a major concern for asset managers and society due to increasing traffic volumes, deterioration of existing bridges and well-publicised bridge failures. A pivotal responsibility for asset managers in charge of bridge remediation is to identify the risks and assess the consequences of remediation programs to ensure that the decisions are transparent and lead to the lowest predicted losses in recognized constraint areas. The ranking of bridge remediation treatments can be quantitatively assessed using a weighted constraint approach to structure the otherwise ill-structured phases of problem definition, conceptualization …
Yield Curvature For Seismic Design Of Circular Reinforced Concrete Columns, M Neaz Sheikh, H. H. Tsang, T. J. Mccarthy, N.T.K Lam
Yield Curvature For Seismic Design Of Circular Reinforced Concrete Columns, M Neaz Sheikh, H. H. Tsang, T. J. Mccarthy, N.T.K Lam
Faculty of Engineering - Papers (Archive)
Significant research efforts have been devoted in recent years to the development of displacement-based seismic assessment and design methodology, recognising the shortcomings of traditional, code-specified force-based procedures. Recent advances in direct displacement-based seismic design of columns rely on the estimates of yield curvature for determining seismic design forces to satisfy the specified seismic performance levels. This paper presents simple expressions for estimating the effective yield curvature for normal- and high-strength circular reinforced concrete columns based on moment–curvature analyses of a large number of column sections. Such expressions can be programmed into spreadsheet format and can be used for the direct …
A Particle Swarm Optimisation Approach To Reinforced Concrete Beam Design According To As3600, Timothy J. Mccarthy, Sean Mccluskey
A Particle Swarm Optimisation Approach To Reinforced Concrete Beam Design According To As3600, Timothy J. Mccarthy, Sean Mccluskey
Faculty of Engineering - Papers (Archive)
A program has been developed to utilise the Particle Swarm Optimisation Algorithm for the cost optimum design of reinforced concrete beams. Multiple constraints according to Australian Standard 3600 have been implemented along with costing information. A series of tests where conducted to investigate the effect of different parameters of the particle swarm algorithm and some refinement of these parameters was conducted. The value penalty coefficients had a significant effect on the results, causing non-convergence when very large penalty coefficients where used, and convergence on non-viable results when very small penalty coefficients where used.
Behaviour Of Eccentric Loading Of Frp Confined Fibre Steel Reinforced Concrete Columns, Muhammad N. S Hadi
Behaviour Of Eccentric Loading Of Frp Confined Fibre Steel Reinforced Concrete Columns, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents results of testing 16 specimens, 12 of which as columns under different eccentricitiesand four as beams under four point loading regime. All 16 specimens were circular in cross section andwere made of reinforced concrete. Four specimens served as reference specimens and were just made ofreinforced concrete. The next four specimens were wrapped with carbon fibre reinforced polymers(CFRP). The next four specimens had steel fibres added to the concrete. The final four specimens werereinforced with steel fibres and wrapped with CFRP. From each group of specimens, one specimen wastested as a column under a concentric load, the second …
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.
Behaviour Of Frp Strengthened Concrete Columns Under Eccentric Compression Loading, Muhammad N. S Hadi
Behaviour Of Frp Strengthened Concrete Columns Under Eccentric Compression Loading, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper presents results of testing eccentrically loaded columns externally wrapped with two types of materials. Six cylindrical (205 mm diameter and 925 mm height) plain columns were cast and tested. Half of the columns were wrapped with GFRP and the other half with CFRP. All columns were tested by applying an axial load at 50 mm eccentricity. In each group (GFRP or CFRP wrapped) of columns, one column did not have any vertical straps, one had vertical straps made of one layer of wrapping material and one column had vertical straps made of three layers of wrapping material. All …
Behaviour Of Frp Wrapped Circular Concrete Columns Under Eccentric Loading, Muhammad N. S Hadi
Behaviour Of Frp Wrapped Circular Concrete Columns Under Eccentric Loading, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
The use of steel reinforcement in concrete construction has proven to be very effective due to the excellent properties that the reinforcing steel has that compliment the concrete properties, for example increase in tensile strength and ductility. However, one of the drawbacks of steel is its long-term behaviour especially in areas where the humidity is high. In such areas, the steel usually suffers from rust and oxidation which eventually lead to the deterioration of the concrete structure. One method to reduce this effect is to protect the reinforcing bars, for example wrapping or using cathodic protection. This paper investigates the …
Modelling Of High Strength Concrete Reinforced With Helical Reinforcement, Muhammad N. S Hadi
Modelling Of High Strength Concrete Reinforced With Helical Reinforcement, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
This paper investigates the behaviour of high strength concrete beams reinforced with helical reinforcement in the compression zone. Using helical reinforcement increases the strength and ductility of high strength concrete. The finite element packages ANSYS and Strand7 have been used to model high strength concrete beams with helical pitches of 25, 50, 75, 100 and 150 mm. Three dimensional elements were used to model the concrete and bar elements to model the steel.Special care had to be taken when modelling the helices. The results of finite element analyses were compared with experimental results which showed a good correlation.