Download or read book Finite Element Simulation of Reinforced Concrete Deep Beam with Opening Strengthened with FRP Laminate written by Osama AbdulRazak AbdulWahab and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Simulation of Reinforced Concrete Deep Beam with Opening Strengthened with FRP Laminates written by Osama AbdulRazak AbdulWahab and published by . This book was released on 2013 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Analysis of RC Deep Beams with Openings Strengthened by Carbon Fiber Reinforced Polymer CFRP written by Chun Mun Seow and published by . This book was released on 2015 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Modeling of Reinforced Concrete Beams Externally Strengthened by FRP Composites written by Tanarat Potisuk and published by . This book was released on 2000 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three-dimensional finite element models are developed to simulate the behavior of four fill-scale reinforced concrete beams. The beams are constructed with different fiber-reinforced polymer (FRP) strengthening schemes, and are modeled using ANSYS, a commercially available finite element analysis program. The experimental beams replicate the transverse beams of the Horsetail Creek Bridge, and were constructed and tested at Oregon State University. The finite element models use a smeared cracking approach for the concrete and three-dimensional layered elements to model the FRP composites. It was found that the finite element models could effectively simulate the behavior of the full-scale beams. Results obtained from the finite element analysis are presented and compared with the experimental data from the full-scale beam tests through the linear and nonlinear ranges up to failure. Comparisons are made for load-strain plots, load-deflection plots, first cracking loads, loads at failure, and crack patterns at failure. The results from the finite element analysis show good agreement with those from the experimental data and support hand calculation predictions for the experiment very well. The crack patterns at failure predicted by the finite element program strongly corroborate the failure modes observed for the full-scale beam tests. Recommendations for finite element modeling improvement are included.

Download or read book Additional Finite Element Method for Analysis of Reinforced Concrete Structures at Limit States written by Ermakova A.V. and published by Издательство АСВ. This book was released on 2012 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presents the theoretical basis of Additional Finite Element Method (AFEM), which is a variant of the Finite Element Method (FEM) for analysis of reinforced concrete structures at limit state. AFEM adds to the traditional sequence of problem by FEM the units of the two well-known methods of the structural design: method of additional loads and limit state method. The problem is solved by introduction of ideal failure models and additional design diagrams formed from additional finite elements, where each AFE describes the limit state reached by the main element. The main relations defining the properties of AFEs as well as the examples of the use of Additional Finite Element Method for analysis of reinforced concrete structures at limit state are given in the work too.

Download or read book Finite Element Modeling of Reinforced Concrete Beams Strengthened with FRP Composite Sheets written by Minglei Jia and published by . This book was released on 2003 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Modeling of Reinforced Concrete Structures Strengthened with FRP Laminates written by Damian I. Kachlakev and published by . This book was released on 2001 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Finite Element Analysis of Composite and Reinforced Concrete Beams written by Xiaoshan Lin and published by Woodhead Publishing. This book was released on 2019-10-18 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Finite Element Analysis of Composite and Reinforced Concrete Beams presents advanced methods and techniques for the analysis of composite and FRP reinforced concrete beams. The title introduces detailed numerical modeling methods and the modeling of the structural behavior of composite beams, including critical interfacial bond-slip behavior. It covers a new family of composite beam elements developed by the authors. Other sections cover nonlinear finite element analysis procedures and the numerical modeling techniques used in commercial finite element software that will be of particular interest to engineers and researchers executing numerical simulations. - Gives advanced methods and techniques for the analysis of composite and fiber Reinforced Plastic (FRP) and reinforced concrete beams - Presents new composite beam elements developed by the authors - Introduces numerical techniques for the development of effective finite element models using commercial software - Discusses the critical issues encountered in structural analysis - Maintains a clear focus on advanced numerical modeling

Download or read book Simulation of Behavior of Composite Grid Reinforced Concrete Beams Using Explicit Finite Element Methods written by Federico A. Tavárez and published by . This book was released on 2001 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Analysis of an Intentionally Damaged Prestressed Reinforced Concrete Beam Repaired with Carbon Fiber Reinforced Polymers written by David A. Brighton and published by . This book was released on 2011 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the existing bridges are in need of repair and strengthening due to various reasons including design flaws, fatigue and deterioration of steel reinforcement, increase in traffic volume, and accidental impact loads during collisions between vehicles and bridge girders or piers. The use of fiber reinforced polymer (FRP) materials to repair and strengthen the deficient infrastructures has become very popular due to FRP's well known advantages such as high strength-to-weight ratio, corrosion resistance, light weight, and ease of applications. This paper presents a review of existing experimental investigations and field applications of FRP-strengthened reinforced concrete structures. Various FRP retrofit techniques are also discussed. A Finite Element Model (FEM) of a prestressed reinforced concrete beam is modeled based off an experimentally tested beam. The model is intentionally damaged by cutting two prestressing strands and one mild steel bar. The beam is repaired with three layers of Carbon Fiber Reinforced Polymer (CFRP) to recover the original design strength of the beam.

Download or read book Finite element analysis of reinforced concrete shear walls strengthened with FRP sheets written by Holger Spiess and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Finite Element Modeling of RC Beams Strengthened with Prestressed NSM FRP Laminates written by Yubraj Pandey and published by . This book was released on 2017 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the parametric study of nonlinear Finite Element Analysis (FEA) modeling of Reinforced Concrete (RC) beams prestressed with Near-Surface Mounted (NSM) FRP. FEA model was validated with the experimental beam results available in the literature to determine the accuracy. Parameters considered were steel and laminates reinforcement ratios, various steel and FRP materials properties (Normal Modulus (NM), High Modulus (HM) and Ultra-High Modulus (UHM)), and FRP types (Basalt Fiber Reinforced Polymer (BFRP), Glass Fiber Reinforced Polymer (GFRP) and Carbon Fiber Reinforced Polymer (CFRP)) under various prestressing conditions. The RC beams were strengthened with FRP laminates which were prestressed by 20, 30, 40% and were compared to the control beam (0% prestressing).The temperature equivalent to the prestressing force was applied to the FRP laminates. Based upon these prestressing levels, the load at yield initiation, ultimate load at failure and ductility index of the beam were determined. From finite element analysis of RC beam results, the application of the prestressing had significantly increased the load at the yield point. However, the percentage increase of ultimate load was low as compared to non prestressed beam. The load versus displacement curves of beams demonstrated a reduction in ductility as the prestressing level was increased. The optimum prestressing level found to be 30% for all parameters while the FRP reinforcement ratio had the maximum effect in load carrying capacity.

Download or read book Nonlinear Finite Element Modelling of FRP Shear strengthened Prestressed and Reinforced Concrete Beams written by Michael Keuork Qapo and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concrete Beams with Openings written by M. A. Mansur and published by CRC Press. This book was released on 1999-01-29 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles state-of-the-art information on the behavior, analysis, and design of concrete beams containing transverse openings. Discussions include the need, effects, and classification of openings as well as the general requirements for fulfilling design pure bending, combined bending, and shear - illustrated with numerical examples torsion alone or in combination with bending and shear large rectangular openings as well as opening size and location on beam behavior methods for analyzing ultimate strength and serviceability requirements effects of torsion in beams large openings in continuous beams and their effects on possible redistribution of internal forces as well as guidelines and procedures for the design of such beams effect of prestressing on the serviceability and strength of beams with web openings design against cracking at openings and ultimate loads Concrete Beams with Openings serves as an invaluable source of information for designers and practicing engineers, especially useful since little or no provision or guidelines are currently available in most building codes.

Download or read book Practitioners Guide to Finite Element Modelling of Reinforced Concrete Structures written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2008-01-01 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-linear computer analysis methods have seen remarkable advancement in the last half-century. The state-of-the-art in non-linear finite element analysis of reinforced concrete has progressed to the point where such procedures are close to being practical, every-day tools for design office engineers. Non-linear computer analysis procedures can be used to provide reliable assessments of the strength and integrity of damaged or deteriorated structures, or of structures built to previous codes, standards or practices deemed to be deficient today. They can serve as valuable tools in assessing the expected behaviour from retrofitted structures, or in investigating and rationally selecting amongst various repair alternatives. fib Bulletin 45 provides an overview of current concepts and techniques relating to computer-based finite element modelling of structural concrete. It summarises the basic knowledge required for use of nonlinear analysis methods as applied to practical design, construction and maintenance of concrete structures, and attempts to provide a diverse and balanced portrayal of the current technical knowledge, recognizing that there are often competing and conflicting viewpoints. This report does not give advice on picking one model over another but, rather, provides guidance to designers on how to use existing and future models as tools in design practice, in benchmarking of their models against established and reliable test data and in selecting an appropriate safety factor as well as recognising various pitfalls. fib Bulletin 45 is intended for practicing engineers, and therefore focuses more on practical application and less on the subtleties of constitutive modelling.

Download or read book Nonlinear Finite Element Analysis of Reinforced Concrete Structures Strengthened with FRP Laminates written by Kasidit Chansawat and published by . This book was released on 2003 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Horsetail Creek (HC) bridge is an example of an Oregon bridge that was classified as structurally deficient and was not designed to withstand earthquake (EQ) excitations. A fiber-reinforced polymer (FRP) rehabilitation was performed on the HC bridge to increase flexural and shear capacities for traffic loads. However, a seismic retrofit has not yet been accomplished for this bridge. Fully three-dimensional finite element (FE) models are developed to simulate and examine the structural behavior of both full-size reinforced concrete (RC) beams and the HC bridge using ANSYS. FE analyses are compared with tests of full-scale beams replicating the transverse beams of the HC bridge before and after FRP strengthening from linear and nonlinear ranges up to failure. The FE models can effectively predict the behavior of the beams, and analytical and experimental results correlate very well. For the FE analyses of the HC bridge, soil-structure interface modeling is incorporated to replicate the actual bridge boundary conditions. Truck loadings are applied to the FE model at different locations, as in the actual bridge test. A sensitivity study is performed by varying uncertain bridge parameters to develop an FE bridge model best representing the actual bridge conditions. The optimal FE model obtained from the sensitivity study can accurately predict the magnitudes and trends in the strains. After an optimal FE bridge model is established, a performance evaluation on the FRP strengthening of the HC bridge is conducted. Both unstrengthened and FRP-strengthened bridge models are subjected to two different types of loading; i.e., scaled gravity and scaled truck loads to failure. Comparisons of results show the improvement in structural performance due to FRP strengthening. A seismic risk-related investigation of the HC bridge is also carried out. Nonlinear time-history analyses are performed using EQ acceleration-time histories applied to the HC bridge model. The ground motions are appropriate to the Pacific Northwest site and scaled so that the response spectrum, within natural periods of interest, matches the 1996 AASHTO design response spectrum. Based on the analytical results, colunm confinement is recommended to increase ductility and reduce potential for substructure collapse in future seismic events.

Download or read book Finite Element Modelling of FRP Reinforced Concrete Beams and Comparative Analysis of Current Strength Prediction Methods written by Ryan Barrage and published by . This book was released on 2017 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The modelling of glass fibre reinforced polymer (GFRP) reinforced, concrete beams was conducted by the author in the finite element analysis software ABAQUS. The study extended upon the work done by Joseph Stoner (2015) to calibrate the Concrete Damaged Plasticity (CDP) model, with the intent to ultimately complement laboratory testing in a research setting. Furthermore, current strength prediction methods for beams reinforced with fibre reinforced polymer (FRP) were evaluated against a database of tested beams collected from literature. The validity of the proposed ABAQUS models was assessed against selected beams from the database. Finally, a parametric study was conducted on 12 GFRP reinforced beams, over 12 slenderness ratios, to study the effects of slenderness. The database of tested beams consisted of beams that failed in shear, as tests on slender beams reinforced with FRP are scarce. The strength prediction models were therefore evaluated on their ability to predict shear capacity. The models included in the analysis are the CSA S806-12, the ACI440.1R-15, the Japan Society of Civil Engineers (JSCE), and the Intelligent Sensing for Innovative Structures (ISIS) Canada Manual No. 3 shear models, as well as a prediction model proposed by Nehdi et al. (2007). The study concluded that Nehdi model most accurately predicts the shear capacity for beams with transverse reinforcement, with the remainder of the models providing very conservative values. For beams without shear reinforcement, all models provided good estimates for the shear capacity, with the CSA S806-12 model matching most closely to experimental data. The ABAQUS models proposed by Stoner were evaluated against a series of 8 beams taken from literature: two beams without shear reinforcement, and six with shear reinforcement. The results validated the recommendations made by Stoner, and verified the use of 30° dilation concrete to model beams without stirrups, and 50° dilation concrete to model beams with stirrups. Further research was deemed necessary to accurately model beams that exhibited both flexural crushing and stirrup rupture. The results of the parametric study suggested that the beams without shear reinforcement required large shear span to depth ratios to fail in flexure, exceeding ratios of 15. The beams with shear reinforcement failed in flexure at slenderness ratios approaching 10, demonstrating the increased shear strength provided by the stirrups. The increase in slenderness ratio required to fail in flexure (compared to steel reinforced beams) is attributed to the larger tensile strength of GFRP bars. Furthermore, an investigation into the shear capacity prediction methods of CSA S806-12 yielded that the model under-predicts the stirrup contribution to shear capacity. Further investigation determined the most likely cause was the modelling of the confinement induced by the stirrups.