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Constitutive Modeling Of Frp Confined Concrete From Damage Mechanics
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Book Synopsis Constitutive Modeling of FRP Confined Concrete from Damage Mechanics by : Deepak Bhandari
Download or read book Constitutive Modeling of FRP Confined Concrete from Damage Mechanics written by Deepak Bhandari and published by LAP Lambert Academic Publishing. This book was released on 2014-10-21 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proposed analytical model developed for concrete confined by FRP composite jackets, might become useful document for various designers and researchers working in the field of retrofitting. Results given by this model easily accepts with the one obtained from the experimental results. The model suggests that, lateral confinement of concrete with FRP composite jackets increases the strength and ductility, under uniaxial compressive load.
Book Synopsis Development of a New Constitutive Model for FRP-And-Steel-Confined Concrete by : Hao Hu
Download or read book Development of a New Constitutive Model for FRP-And-Steel-Confined Concrete written by Hao Hu and published by . This book was released on 2011 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Failure of Plain and Spirally Reinforced Concrete in Compression by : Frank Erwin Richart
Download or read book The Failure of Plain and Spirally Reinforced Concrete in Compression written by Frank Erwin Richart and published by . This book was released on 1929 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rate Effects in the Constitutive Modeling of Concrete and Geomaterials Including Plasticity and Damage by : Vassilis P. Panoskaltsis
Download or read book Rate Effects in the Constitutive Modeling of Concrete and Geomaterials Including Plasticity and Damage written by Vassilis P. Panoskaltsis and published by . This book was released on 1992 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lateral Strain Modeling, Analysis and Design of Confined Concrete by : Chunxiao Dong
Download or read book Lateral Strain Modeling, Analysis and Design of Confined Concrete written by Chunxiao Dong and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Lateral Strain Modeling, Analysis and Design of Confined Concrete" by Chunxiao, Dong, 董春宵, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: This thesis presents a lateral strain model of confined concrete, which makes no assumptions on the properties of confining materials and is therefore generally applicable regardless of the type of confinement. It can be applied to concrete members or columns confined by fiber reinforced polymer (FRP), steel tubes or steel tubes wrapped with FRP or steel rings/spirals, provided the appropriate stress-strain models of the confining materials are incorporated in the analysis. The lateral strain model can also be used to directly evaluate the lateral strain of confined concrete with non-cylindrical section or under eccentric loading where the lateral strain and confining stress could vary across the section using finite element analysis. The first part of the thesis presents the details of the derivations of the lateral strain model of confined concrete. A total of 95 actively confined concrete specimens and 34 passively confined concrete specimens covering a wide range of concrete strength from 25 to 120 MPa and confining stress from 0 to 0.99 times the concrete strength tested by other researchers in the published literature have been investigated for the influence of concrete strength, confining stress and axial strain on the lateral strain of confined concrete. Based on the regression analysis, the influence of concrete strength, confining stress and axial strain is accurately and consistently captured and a constitutive model for predicting the lateral strain of confined concrete under different levels of confinement from pre-crack and elastic state to post-crack and inelastic state is proposed. In the second part of the thesis, theoretical models integrating the proposed lateral strain model, axial stress-strain model of confined concrete, stress-strain model of steel tube, FRP, steel rings/spirals have been proposed to analyze the axial stress-strain curves of a total of 174 FRP confined concrete, 138 concrete-filled steel tubes (CFST) without external confinement, 89 CFST with FRP jackets and 98 CFST with external steel rings/spirals. The lateral strain, confining stress can be obtained by an iterative procedure and the axial stress/load can be evaluated by substituting the so obtained confining stress into the axial stress-strain model of confined concrete. It is observed that the theoretical models can predict the axial and lateral stress-strain behaviour of FRP confined concrete, CFST, and CFST with external confinement accurately and consistently. Finally, a parametric study has been carried out by varying a series of structural parameters such as concrete strength, steel tube yield strength and thickness-to-diameter ratios, FRP confining stiffness and rupture strain, and steel rings/spirals confining stiffness to study the effects on strength and ductility. From the data generated by the parametric study, design formulas for predicting the yield and ultimate strength of FRP confined concrete, CFST with or without external confinements are proposed and compared with existing codes and design charts for evaluating the minimum FRP confining stiffness or steel rings/spirals thickness-to-diameter ratio to achieve different levels of ductility for CFST with various concrete strength are presented. Moreover, the minimum confining stiffness of external confinement to avoid delamination is evaluated for design guidance. Subjects: Reinforced concrete
Book Synopsis 10th International Conference on FRP Composites in Civil Engineering by : Alper Ilki
Download or read book 10th International Conference on FRP Composites in Civil Engineering written by Alper Ilki and published by Springer Nature. This book was released on 2021-11-26 with total page 2516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in the field of FRP composites and structures, as presented by leading international researchers and engineers at the 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), held in Istanbul, Turkey on December 8-10, 2021. It covers a diverse range of topics such as All FRP structures; Bond and interfacial stresses; Concrete-filled FRP tubular members; Concrete structures reinforced or pre-stressed with FRP; Confinement; Design issues/guidelines; Durability and long-term performance; Fire, impact and blast loading; FRP as internal reinforcement; Hybrid structures of FRP and other materials; Materials and products; Seismic retrofit of structures; Strengthening of concrete, steel, masonry and timber structures; and Testing. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Book Synopsis Numerical and Analytical Modeling of Concrete Confined with Frp Wraps by : Omkar Tipnis
Download or read book Numerical and Analytical Modeling of Concrete Confined with Frp Wraps written by Omkar Tipnis and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is intended at studying and comparing empirical models that have been proposed for the modeling of the stress-strain response of a FRP confined concrete subjected to axial load. An attempt has been made to model the experimental set up for the compression test of a concrete cylinder confined with FRP sheet in AbaqusCAE. The results so obtained have been compared and analyzed against the experimental test results & the results obtained from a chosen mathematical model (Modified Lam & Teng). An attempt was made to create a new material model in Opensees that follows the chosen mathematical model. However, this was not achieved due to the reasons that will be explained in the later sections.Reinforced concrete confined with steel is typically designed by considering the Manders model (Mander et al., 1988), which assumes a constant confining pressure. This is true with the case of steel as it is a ductile material and one assumes the steel to be yielded. However with the case of FRP jackets, this is not true. FRP is a linear elastic and brittle material and does not yield, which makes the Manders model inaccurate for its analysis. Many models have been proposed which take into account the increasing confining pressure due to the FRP wrap. A comparative study of the constitutive models proposed for FRP confined reinforced concrete has been done in this study.Finally after a series of numerical interpretations of different specimens and their comparison with the experimental data, the utility and accuracy of the new modified Lam & Teng's model was validated. The validation process included comparison and analytical data obtained via finite element simulation in Abaqus, empirical model results and the experimental data.The objective is achieved and restricted within the following scope of study:1)Literature review to identify and choose the most relevant models for modeling of concrete confined with fiber reinforced polymers in compression.2)Modelling and finite element analysis of the confined concrete compression test in AbaqusCAE.3)Developing the stress-strain curve from several proposed empirical model (Modified Lam & Teng).4)Survey of experimental data on confined concrete with FRP in order to generate an experimental database.5)Comparison of the analytical results in order to define the strengths and limitations of the empirical model chosen to study.6)Validation of the model chosen and a study on its relevance for use in typical bridge columns retrofitted with FRP jackets.7)Proposing changes to the empirical model for more accurate results.8)Validate the effects of the proposed changes.
Book Synopsis Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems by : Alphose Zingoni
Download or read book Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems written by Alphose Zingoni and published by CRC Press. This book was released on 2022-09-02 with total page 4438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems comprises 330 papers that were presented at the Eighth International Conference on Structural Engineering, Mechanics and Computation (SEMC 2022, Cape Town, South Africa, 5-7 September 2022). The topics featured may be clustered into six broad categories that span the themes of mechanics, modelling and engineering design: (i) mechanics of materials (elasticity, plasticity, porous media, fracture, fatigue, damage, delamination, viscosity, creep, shrinkage, etc); (ii) mechanics of structures (dynamics, vibration, seismic response, soil-structure interaction, fluid-structure interaction, response to blast and impact, response to fire, structural stability, buckling, collapse behaviour); (iii) numerical modelling and experimental testing (numerical methods, simulation techniques, multi-scale modelling, computational modelling, laboratory testing, field testing, experimental measurements); (iv) design in traditional engineering materials (steel, concrete, steel-concrete composite, aluminium, masonry, timber); (v) innovative concepts, sustainable engineering and special structures (nanostructures, adaptive structures, smart structures, composite structures, glass structures, bio-inspired structures, shells, membranes, space structures, lightweight structures, etc); (vi) the engineering process and life-cycle considerations (conceptualisation, planning, analysis, design, optimization, construction, assembly, manufacture, maintenance, monitoring, assessment, repair, strengthening, retrofitting, decommissioning). Two versions of the papers are available: full papers of length 6 pages are included in the e-book, while short papers of length 2 pages, intended to be concise but self-contained summaries of the full papers, are in the printed book. This work will be of interest to civil, structural, mechanical, marine and aerospace engineers, as well as planners and architects.
Book Synopsis Concrete Composite Columns by : Chong Rong
Download or read book Concrete Composite Columns written by Chong Rong and published by Elsevier. This book was released on 2022-11-25 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete Composite Columns: Behavior and Design focuses on confined concrete and establishes analytical methods for each composite column. The volume moves beyond existing resources to study the relationship between existing composite structures and design methods for the sectional form of a concrete composite structure. Chapters cover the failure criteria of concrete, confined concrete types, models, including axial stress prediction, analysis and design-oriented constitutive models, the design and analysis of section form, axial and seismic behaviors of concrete composite columns, the seismic design of concrete composite columns, and the engineering application. This book offers a practical solution to students, researchers, and engineers working with both steel and FRP-confined concrete composite columns. Focuses on confined concrete and provides analytical methods for composite columns Discusses different types of composite columns, including FRP and steel-concrete composites Considers the construction method and confining forces in composite concrete columns Details confined concrete from basic theoretical analysis to seismic behaviors and design methods Provides a solution to students, researchers, and engineers working with confined composite columns
Book Synopsis Continuous and Discontinuous Modelling of Fracture in Concrete Using FEM by : Jacek Tejchman
Download or read book Continuous and Discontinuous Modelling of Fracture in Concrete Using FEM written by Jacek Tejchman and published by Springer Science & Business Media. This book was released on 2012-07-28 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book analyzes a quasi-static fracture process in concrete and reinforced concrete by means of constitutive models formulated within continuum mechanics. A continuous and discontinuous modelling approach was used. Using a continuous approach, numerical analyses were performed using a finite element method and four different enhanced continuum models: isotropic elasto-plastic, isotropic damage and anisotropic smeared crack one. The models were equipped with a characteristic length of micro-structure by means of a non-local and a second-gradient theory. So they could properly describe the formation of localized zones with a certain thickness and spacing and a related deterministic size effect. Using a discontinuous FE approach, numerical results of cracks using a cohesive crack model and XFEM were presented which were also properly regularized. Finite element analyses were performed with concrete elements under monotonic uniaxial compression, uniaxial tension, bending and shear-extension. Concrete beams under cyclic loading were also simulated using a coupled elasto-plastic-damage approach. Numerical simulations were performed at macro- and meso-level of concrete. A stochastic and deterministic size effect was carefully investigated. In the case of reinforced concrete specimens, FE calculations were carried out with bars, slender and short beams, columns, corbels and tanks. Tensile and shear failure mechanisms were studied. Numerical results were compared with results from corresponding own and known in the scientific literature laboratory and full-scale tests.
Book Synopsis The Mechanism of Fibre-reinforced Polymer Confinement in Concrete Structures by : Cheng (Jason) Jiang
Download or read book The Mechanism of Fibre-reinforced Polymer Confinement in Concrete Structures written by Cheng (Jason) Jiang and published by Woodhead Publishing. This book was released on 2025-03-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern construction continually evolves with innovations in material technology. A notable advancement in this realm is using fiber reinforced polymers (FRP) to confine concrete, enhancing its strength, ductility, and durability. FRP jacketing and confinement offer a corrosion-resistant, effective, and sustainable solution to the structural rehabilitation of concrete structures. However, the mechanics of FRP confinement are not well understood. The Mechanism of Fibre-reinforced Polymer Confinement in Concrete Structures fills the key knowledge gaps in the field, offering an all-encompassing resource: from the material level to the structural level, including FRP confinement mechanism, governing factors, constitutive behavior, and columns’ plastic hinge problems.
Book Synopsis Proceedings of the 6th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures by : Xiang-Lin Gu
Download or read book Proceedings of the 6th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures written by Xiang-Lin Gu and published by Springer Nature. This book was released on 2024-02-27 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of selected papers from the 6th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2022). The work focuses on the state-of-the-practice and recent advances in testing and monitoring technology, in structural modeling and assessment methods, and in the application of advanced materials for structural rehabilitation. The contents make valuable contributions to international professors, research scientists, professional engineers, postdoctoral fellows and postgraduate students.
Book Synopsis Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 by : Scott Walbridge
Download or read book Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 written by Scott Walbridge and published by Springer Nature. This book was released on 2022-05-17 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.
Book Synopsis Fiber-reinforced Polymer (FRP) Reinforcement for Concrete Structures by :
Download or read book Fiber-reinforced Polymer (FRP) Reinforcement for Concrete Structures written by and published by . This book was released on 2005 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the First International Conference on Theoretical, Applied and Experimental Mechanics by : Emmanuel E. Gdoutos
Download or read book Proceedings of the First International Conference on Theoretical, Applied and Experimental Mechanics written by Emmanuel E. Gdoutos and published by Springer. This book was released on 2018-05-26 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: ICTAEM_1 treated all aspects of theoretical, applied and experimental mechanics including biomechanics, composite materials, computational mechanics, constitutive modeling of materials, dynamics, elasticity, experimental mechanics, fracture, mechanical properties of materials, micromechanics, nanomechanics, plasticity, stress analysis, structures, wave propagation. During the conference special symposia covering major areas of research activity organized by members of the Scientific Advisory Board took place. ICTAEM_1 brought together the most outstanding world leaders and gave attendees the opportunity to get acquainted with the latest developments in the area of mechanics. ICTAEM_1 is a forum of university, industry and government interaction and serves in the exchange of ideas in an area of utmost scientific and technological importance.
Book Synopsis A Thermodynamic Approach to Constitutive Modelling of Concrete Using Damage Mechanics and Plasticity Theory by : Giang Dinh Nguyen
Download or read book A Thermodynamic Approach to Constitutive Modelling of Concrete Using Damage Mechanics and Plasticity Theory written by Giang Dinh Nguyen and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ACI 440. 2R-17 Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures by : ACI Committee 440
Download or read book ACI 440. 2R-17 Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures written by ACI Committee 440 and published by . This book was released on 2017-04-27 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
