3 edition of Non-linear analysis of circular FRP-confined concrete columns using finite element methods. found in the catalog.
Non-linear analysis of circular FRP-confined concrete columns using finite element methods.
Vikram D. Punshi
Thesis (M.A.Sc.) -- University of Toronto, 2003.
|Series||Canadian theses = -- Th`eses canadiennes|
|The Physical Object|
|Pagination||3 microfiches : negative.|
finite element analysis and design of steel and steel concrete composite bridges Posted By Richard Scarry Library TEXT ID af Online PDF Ebook Epub Library creating robust design models the books seven chapters begin with an overview of the various forms of modern steel and steel concrete composite bridges as well as. The effect of the FRP-to-concrete interfacial bond on the behavior of FRP-confined RC columns has not yet been studied extensively. This paper reports on an experimental and numerical study of FRP-confined RC columns involving different bonding conditions between FRP and concrete. View Aditya P. Kulkarni, P.E.’s profile on LinkedIn, the world's largest professional community. Aditya P. has 5 jobs listed on their profile. See the complete profile on LinkedIn and discover Title: Structural Engineer at Thornton . Keywords ACI , ASCE-ACI , finite element model, gene expression programming, particle swarm optimization algorithm, shear strength, short circular reinforced-concrete columns References Abdollahi, H () An Assessment on Failure Mechanism and Adequacy of Proposed Relationships for Estimating the Shear Strength of Reinforced Concrete.
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FRP confined concrete. Issa and Alrousan () presented an experimental and nonlinear finite element analysis to determine the strength and ductility of circular short concrete columns confined externally with carbon fiber-reinforced polymer subjected to pure axial loading. Harajli ()Author: Mohamed A.
El-Shaer. wrapped concrete columns. This study also aims to evaluate the effect of FRP-concrete interface on the behavior of FRP confined concrete.
Objectives of the Study The objectives of the study are 1 To perform a nonlinear 3D finite element analysis on concrete columns.
In the last few decades, the upgrading of existing reinforced concrete columns with the use of FRP jackets has met with increasing interest for its effectiveness and ease of application.
The use of these kinds of jackets ensures an improvement of the affected column in terms of strength and ductility; however, the prediction of behavior of columns wrapped with FRP jackets is still an open Cited by: 2. Finite Elements in Ansys.
The following are the finite elements used for the analysis. Types of element a Reinforced concrete. So eight node solid element is used to model the concrete it has eight nodes with three degrees of freedom at each node include translations in the nodal x, y and z.
PDF | A prediction of reinforced concrete column capacity confined with FRP remains one of the challenging research area. One of the challenges are the | Find, read and cite all the research. Numerical results from the verified FE approach are then presented to gain an improved understanding of the behavior of confined concrete in such columns (e.g., distributions of axial stresses and confining pressures), leading to the conclusion that the direct use of a concentric-loading stress–strain model in the analysis of an eccentrically.
The finite element method (ANSYS) is used to model and analyze the reinforced concrete column, first without FRP composite material and subsequently with different FRP composite materials. The Reinforced concrete columns are tested (with and without FRP) by applying static loads.
in the CFRP sheets. The seismic design method of t. As a comprehensive Non-linear analysis of circular FRP-confined concrete columns using finite element methods.
book, this paper primarily deals with the nonlinear finite element modeling of rectangular/square concrete columns wrapped with FRP in order to simulate the compressive behavior under concentric loading. This study focuses on the modelling of circular reinforced concrete column confined with FRP using FEM.
The steel rebar is modelled as a truss element with elastic-perfectly plastic material behavior. Both the concrete and FRP elements are modelled as 8-noded hexahedral element. al () was focused on analysis of solid or hollow core FRP confined concrete cylinders.
Objectives of above studies are the reliable prediction of stress-strain behavior of confined columns as well as the variation of stress and strain in transverse sections or on the FRP jacket. Also many researches have been conducted using soft computing methods such as prediction of the strength of CCFT short columns subject to axial load, in which a model to predict the compressive capacity of circular concrete-filled steel tube was suggested ; Furthermore, prediction of shear contribution of FRP-confined RC beams by externally.
Finite element models incorporating the proposed CDPM model were developed for concrete in a number of stress states, including active confinement, biaxial compression, FRP-confined circular and square columns, and hybrid DSTCs.
FE predictions, obtained using either method for the definition of the flow rule for concrete, have been found to be. 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). Non-linear finite element (FE) modeling of FRP-confined concrete was carried out using the program LS-DYNA.
Results obtained from the numerical modeling were compared with the experimental results of the specimens tested in this study in addition to others selected from the literature. Finite element analysis results showed the substantial increase in axial compressive strength and stiffness of FRP confined concrete columns compared to unconfined ones.
the wide use of plain, reinforced and prestressed concrete as a structural material, and because of the development of relatively powerful finite element procedures [l]. If a realistic nonlinear analysis of a concrete structure can be carried out, the safety of the.
the dilation characteristics of the FRP confined concrete. The model provides the stress-strain curves of axially loaded circular columns that are confined by FRP reinforcement.
It can be used in FRP tube encased concrete as well as in FRP sheet wrapped concrete. Satisfactory correlation of experimental and analytical results is remarked. KEYWORDS.
A nonlinear finite element model is developed for the analysis of plain and reinforced concrete column confined by FRP sheets. The column sections chosen for the analysis are either circular or square in shape.
The behavior of small and large scale FRP wrapped concrete columns under uni-axial compression is investigated using the developed model.
real structures are analysed. It turns out that the finite ele ment analysis offers unique opportunities to investigate and describe in physical terms the structural behaviour of concrete structures. The finite element analysis is performed using the program AXIPLANE, developed at Risø.
The use of this program is given by the writer (). The proposed model is analogous in approach to analysis-oriented stress-strain models for FRP-confined concrete in circular columns, and represents a.
The proposed model is analogous in approach to analysis-oriented stress-strain models for FRP-confined concrete in circular columns and represents a.
The simulation of the cantilever columns has been applied using a unique fiber beam-column element (Spacone et al., ) with force formulation for the entire column, in which the FRP-confined concrete was modeled using the proposed material model with degraded linear unloading/reloading stiffness according to the work of Karsan and Jirsa.
This paper presents an experimental and analytical study of FRP confined circular concrete columns under eccentric loading. out using a non-linear finite element method. analysis was. Proper design of fibre reinforced polymer (FRP) retrofitted concrete columns requires an appropriate concrete model that describes both confinement sensitivity (i.e increase of the strength and ductility) and dilation characteristic of concrete under the triaxial stress state.
In this paper, a confinement-sensitive damage plasticity model for concrete material is developed. Structures Strengthened with Bonded Composites presents a comprehensive resource on the strengthening of concrete, reinforced and prestressed concrete, masonry, steel and other composite structures using externally-bonded FRP composites.
The book emphasizes a systematic and fundamental investigation on bonding and debonding behavior of the FRP-concrete interface and.
Three-Dimensional Finite-Element Analysis of FRP-Confined Circular Concrete Columns under Eccentric Loading Downloaded 1, times.
Technical Papers. Three-Dimensional Finite-Element Analysis of FRP-Confined Circular Concrete Columns under Eccentric Loading proceedings papers, and available book chapters across the entire ASCE Library. The finite element method predicts the behavior of larger more complex structures by separating the structure into smaller mathematically discrete parts called elements.
These elements have a simple geometry and are easier to analyze. The method requires solving many algebraic equations simultaneously, which is completed with the aid of a computer.
Circular Concrete Tanks Without Prestressing Circular Storage Tanks and Silos, 3rd Edition Finite element modeling of the consolidation behavior of multi-column Finite Element Structural Analysis On An Excel Spreadsheet Shear and Torsion in Concrete Structures Non-Linear Finite Element Analysis in Design.
Keywords: Non-linear analysis, Finite Element Method, Practical Application, Concrete Structure, Date: 6/15/ Abstract: Despite the availability of sophisticated non-linear finite element (FE) analysis software, linearelastic analysis is still the standard tool to model the response of reinforced concrete structures in practice.
MULTIPLE ANALYSIS METHODS DeepEX implements all approved scientific methods for the design of deep excavation projects. With DeepEX we can select to perform the classical limit equilibrium analysis, we can use the non-linear analysis method with the use of elastoplastic Winkler springs (beam on elastoplastic foundations) or perform Finite Element Analysis.
This book describes the application of nonlinear static and dynamic analysis for the design, maintenance and seismic strengthening of reinforced concrete structures. The latest structural and RC constitutive modelling techniques are described in detail, with particular attention given to multi-dimensional cracking and damage assessment, and their practical applications for performance-based.
Some types of finite element methods (conforming, nonconforming, mixed finite element methods) are particular cases of the gradient discretization method (GDM).
Hence the convergence properties of the GDM, which are established for a series of problems (linear and non-linear elliptic problems, linear, nonlinear, and degenerate parabolic. In this paper a constitutive model based on an internal variable-formulation of plasticity theory for the non-linear analysis of concrete is presented.
The model uses a new yield criterion which matches experimental data quite well and it accounts for both elastic and plastic stiffness degradations effects. Onset and amount of cracking can be studied by a simple postprocessing of the finite.
Structural analysis is the determination of the effects of loads on physical structures and their ures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, aircraft and ships.
Structural analysis employs the fields of applied mechanics, materials science and applied mathematics to compute a structure's deformations, internal.
The nonlinear finite-element analysis results were compared and validated against the experimental test results. The results show that the FRP jacket can greatly enhance the strength and ductility of concrete columns under eccentric loading and that the strain gradient reduces the retrofit efficiency of the FRP jacket for concrete columns.
Structural health monitoring is a procedure to provide accurate and immediate information on the condition and efficiency of structures.
There is a variety of damage factors and the unpredictability of future damage, is essential for the application of structural health monitoring.
Structural health monitoring and damage detection in early stages is one of the most fascinating topics that had. 3D Finite Element Modeling of FRP-Confined Rectangular Short Columns Considering Variation of Poisson’s Ratio. Iranian Journal of Science and Technology, Transactions of Civil Engineering, K.
C., “ Confinement Efficiency and Size Effect of FRP Confined Circular Concrete Columns,” Structural Engineering and Mechanics, FRP-Confined. circular FRP-confined concrete columns, subjected to concentric monotonic axial compression.
The objectives of the current study were to: i) Perform an extensive review of the existing experimental and analytical investigations on the behaviour of FRP-confined circular concrete columns, ii) Critically examine the existing experimental data. The comparisons show that proper analysis model can accurately simulate the axial compressive property of FRP-confined concrete columns.
Then a parameter analysis is carried out to investigate the impact of longitudinal reinforcement ratio, volumetric lateral reinforcement ratio, concrete strength and restrain stiffness of FRP on the bearing.
Concrete structures, such as airports, pavements, industrial floors and so on are prone to sudden, excessive and adverse loading conditions.
This has become a major topic of interest for many researchers in recent years. An experimental investigation on evaluating the impact resistance of concrete is carried out as per ACI 2R using concrete cubes of size mm.
FINITE ELEMENT ANAYSIS OF REINFORCED CONCRETE ELEMENTS Introduction The individual material models may be assembled to generate a global finite element model; however, the assembly and global solution process as well as calibration of the global model must be considered before the model is applied to the problem of analysis of.This FE model has the potential for extension to more general cases of FRP-confined concrete columns (e.g.
rectangular concrete columns) and can provide a useful tool for the exploration of confinement mechanisms in the development of simple stress-strain models for design use.Many experimental investigations on eccentrically loaded FRP confined columns have been carried out on circular columns [30,32,33,34,35,36,37,38,39,40,41] and noncircular columns [28,42,43,44,45,46,47,48,49,50].Other investigations [29,31,51] focused on finite element modeling (FEM) to investigate the effect of the load eccentricity on FRP-confined concrete columns.