Download or read book Performance based Approaches for High Strength Tubular Columns and Connections Under Earthquake and Fire Loadings ATTEL written by and published by . This book was released on 2013 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of high strength steel (HSS) circular hollow sections (CHS) is still limited in the construction industry despite their excellent structural and architectural properties and the fast development of end-preparation machines. The lack of information about the design of HSS elements may however not be considered as a brake on innovation. Indeed, EC3-1-12 gives design recommendations allowing the extension of the scope of Eurocode 3 to steel grades up to S690/ S700MC. Nevertheless, it is widely recognised that the EC3-1-12 extended rules are not allowing full benefit from all the strength potentialities of the HSS elements. The project ATTEL intended to develop both analytical and experimental know-how in order to support new design criteria for the exploitation of HSS and steel-concrete composite circular hollow sections for columns and connections subjected to exceptional loads, like earthquakes and fire. Experimental, analytical and numerical investigations have been achieved in ATTEL so as to allow practitioners to make full use of high strength steels ranging from S500Q/S500MC to S690Q/S700MC which represents nowadays an upper limit for structural applications. The main achievement of the project is the proposal of design rules and design recommendations for structures using HSS tubular columns and for structural elements made of HSS such as steel/composite columns, beam-to-column joints and column bases in fire conditions and/or under moderate/strong seismic actions. Besides that, the field of economical application of HSS CHS solutions has also been identified for the various above-mentioned loading situations.

Download or read book Design of Joints in Steel Structures written by ECCS - European Convention for Constructional Steelwork and published by John Wiley & Sons. This book was released on 2017-06-19 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the basic concepts and the design rules included in Eurocode 3 "Design of steel structures" Part 1-8 "Design of joints". Joints in composite construction are also addressed through references to Eurocode 4 "Design of composite steel and concrete structures" Part 1-1 "General rules and rules for buildings". Moreover, the relevant UK National Annexes are also taken into account. Attention has to be duly paid to the joints when designing a steel or composite structure, in terms of the global safety of the construction, and also in terms of the overall cost, including fabrication, transportation and erection. Therefore, in this book, the design of the joints themselves is widely detailed, and aspects of selection of joint configuration and integration of the joints into the analysis and the design process of the whole construction are also fully covered. Connections using mechanical fasteners, welded connections, simple joints, moment-resisting joints and lattice girder joints are considered. Various joint configurations are treated, including beam-to-column, beam-to-beam, column bases, and beam and column splice configurations, under different loading situations (axial forces, shear forces, bending moments and their combinations). The book also briefly summarises the available knowledge relating to the application of the Eurocode rules to joints under fire, fatigue, earthquake, etc., and also to joints in a structure subjected to exceptional loadings, where the risk of progressive collapse has to be mitigated. Finally, there are some worked examples, plus references to already published examples and to design tools, which will provide practical help to practitioners.

Download or read book Design of Joints in Steel and Composite Structures written by ECCS - European Convention for Constructional Steelwork and published by John Wiley & Sons. This book was released on 2016-06-22 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the basic concepts and the design rules included in Eurocode 3 Design of steel structures: Part 1-8 Design of joints Joints in composite construction are also addressed through references to Eurocode 4 Design of composite steel and concrete structures Part 1-1: General rules and rules for buildings. Attention has to be duly paid to the joints when designing a steel or composite structure, in terms of the global safety of the construction, and also in terms of the overall cost, including fabrication, transportation and erection. Therefore, in this book, the design of the joints themselves is widely detailed, and aspects of selection of joint configuration and integration of the joints into the analysis and the design process of the whole construction are also fully covered. Connections using mechanical fasteners, welded connections, simple joints, moment-resisting joints and lattice girder joints are considered. Various joint configurations are treated, including beam-to-column, beam-to-beam, column bases, and beam and column splice configurations, under different loading situations (axial forces, shear forces, bending moments and their combinations). The book also briefly summarises the available knowledge relating to the application of the Eurocode rules to joints under fire, fatigue, earthquake, etc., and also to joints in a structure subjected to exceptional loadings, where the risk of progressive collapse has to be mitigated. Finally, there are some worked examples, plus references to already published examples and to design tools, which will provide practical help to practitioners.

Download or read book Tubular Structures XIV written by Leroy Gardner and published by CRC Press. This book was released on 2012-08-24 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tubular Structures XIV contains the latest scientific and engineering developments in the field of tubular steel structures, as presented at the 14th International Symposium on Tubular Structures (ISTS14, Imperial College London, UK, 12-14 September 2012). The International Symposium on Tubular Structures (ISTS) has a long-standing reputation for b

Download or read book Post Earthquake Fire Resistance of Ductile Concrete Filled Double Skin Tube Columns written by Reza Imani and published by . This book was released on 2014 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire following an earthquake has been a major cause of damage in a number of historic seismic events. Considering the amount of damage and statistics showing a high probability for the occurrence of post-earthquake ignitions, there is a need to study the effects of seismic damage on the fire resistance of structures. Concrete Filled Double-Skin Tube (CFDST) columns, a special composite structure which has been shown to have satisfactory performance under separate seismic loading and fire conditions, were studied in this research when subjected to post-earthquake fire scenarios. Experimental studies were conducted to examine the behavior of concrete filled double-skin tube (CFDST) columns exposed to fire after being subjected to simulated seismic loads. The experiments were conducted in two separate phases, consisting of the quasi-static cyclic tests followed by fire tests. Three nominally identical column specimens were constructed for these studies. One of the specimens was directly tested under fire to quantify its resistance in an undamaged condition. The other two specimens were first subjected to quasi-static cyclic lateral loads, imposing varying degrees of lateral drift to simulate two different seismic events with moderate and high damage levels before being exposed to fire. Both of the specimens were pushed to the maximum drift of 6-6. 5% with different residual drifts of 1. 4% and 3. 9% for moderate and high damage levels, respectively. The undamaged and damaged columns were then subjected to the same fire tests following the standard ASTM E119 (ASTM 2012) temperature-time curve while sustaining an axial load until the column failed due to global buckling. Local buckling of the tubes was also observed in the specimens due to the thermal expansion and separation from the concrete. Overall, the results showed marginal differences in the fire resistance of the three specimens, providing evidence for the resilient performance of these columns under post-earthquake fire scenarios. An additional quasi-static cyclic loading test was conducted on the specimen that had been exposed to fire without any prior damage, to investigate the behavior of the column subjected to seismic loads after the fire test. Again, differences in behavior were modest, except for a 5. 7% drop in strength attributed to permanent degradation in material properties due to the fire test. In addition to the experimental studies, detailed finite element analyses were conducted using ABAQUS and LS-DYNA to simulate the behavior of CFDST columns subjected to post-earthquake fires. The models were shown to be capable of replicating the experimental results with sufficient accuracy. A simplified step by step analytical procedure was proposed for calculation of the axial load capacity of CFDST columns subjected to fire. The procedure was defined based on an analytical solution to the heat transfer problem and calculation of axial load capacity using the fire-modified material properties. A number of design recommendations, based on the knowledge gained from the experimental and analytical studies, were proposed for CFDST columns subjected to fire.

Download or read book Concrete Filled Stainless Steel Tubular Columns written by Vipulkumar Patel and published by CRC Press. This book was released on 2018-12-07 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete-filled stainless steel tubular (CFSST) columns are increasingly used in modern composite construction due to their high strength, high ductility, high corrosion resistance, high durability and aesthetics and ease of maintenance. Thin-walled CFSST columns are characterized by the different strain-hardening behavior of stainless steel in tension and in compression, local buckling of stainless steel tubes and concrete confinement. Design codes and numerical models often overestimate or underestimate the ultimate strengths of CFSST columns. This book presents accurate and efficient computational models for the nonlinear inelastic analysis and design of CFSST short and slender columns under axial load and biaxial bending. The effects of different strain-hardening characteristics of stainless steel in tension and in compression, progressive local and post-local buckling of stainless steel tubes and concrete confinement are taken into account in the computational models. The numerical models simulate the axial load-strain behavior, moment-curvature curves, axial load-deflection responses and axial load-moment strength interaction diagrams of CFSST columns. The book describes the mathematical formulations, computational procedures and model verifications for circular and rectangular CFSST short and slender columns. The behavior of CFSST columns under various loading conditions is demonstrated by numerous numerical examples. This book is written for practising structural and civil engineers, academic researchers and graduate students in civil engineering who are interested in the latest computational techniques and design methods for CFSST columns.

Download or read book Concrete filled Tubular Members and Connections written by Xiao-Ling Zhao and published by CRC Press. This book was released on 2017-05-31 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using steel and concrete together utilizes the beneficial material properties of both elements. Concrete filled steel tubes represent a good example of a concrete - steel composite structure, and are particularly useful as columns in high rise buildings and bridge piers. They can be used in a range of fields, from civil and industrial construction through to the mining industry. Several aspects of concrete filled tubes have received little coverage in existing design standards, design guides or relevant books, but are addressed here: construction methods or quality and their effect on performance, confinement, creep effects, pre-load effects, size effects, seismic behaviour and post-fire behaviour, worked examples under practical conditions, numerical simulations, mechanics models, concrete-filled double skin tubes, SCC(self-consolidating concrete)-filled tubes, HPHSC (high performance high strength concrete)-filled tubes, high strength steel and thin-walled tubes filled with concrete, and fiber reinforced polymer strengthening of concrete filled tubes. This book not only summarizes the research performed to date on concrete-filled tubular members and connections but also compares the design rules in various standards (Eurocode 4, AISI-LRFD, ACI, AIJ and Chinese Standard), and provides design examples. An invaluable guide for professionals and a detailed source of information for graduate students and beyond.

Download or read book Behaviour of Beam to tubular Column Connections Under Extreme Loading Conditions written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of High Strength Steel Reinforced Concrete Columns written by Sing-Ping Chiew and published by CRC Press. This book was released on 2018-04-17 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the companion volume to Design Examples for High Strength Steel Reinforced Concrete Columns – A Eurocode 4 Approach. Guidance is much needed on the design of high strength steel reinforced concrete (SRC) columns beyond the remit of Eurocode 4. Given the much narrower range of permitted concrete and steel material strengths in comparison to EC2 and EC3, and the better ductility and buckling resistance of SRC columns compared to steel or reinforced concrete, there is a clear need for design beyond the guidelines. This book looks at the design of SRC columns using high strength concrete, high strength structural steel and high strength reinforcing steel materials – columns with concrete cylinder strength up to 90 N/mm2, yield strength of structural steel up to 690 N/mm2 and yield strength of reinforcing steel up to 600 N/mm2 respectively. The companion volume provides detailed worked examples on use of these high strength materials. This book is written primarily for structural engineers and designers who are familiar with basic EC4 design, and should also be useful to civil engineering undergraduate and graduate students who are studying composite steel concrete design and construction. Equations for design resistances are presented clearly so that they can be easily programmed into design spreadsheets for ease of use.

Download or read book Robustness of Connections to Concrete filled Steel Tubular Columns Under Fire During Heating and Cooling written by Sherif Ahmed Elkarim Ibrahim Soliman Elsawaf and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Joint behaviour in fire is currently one of the most important topics of research in structural fire resistance. The collapse of World Trade Center buildings and the results of the Cardington full-scale eight storey steel framed building fire tests in the UK have demonstrated that steel joints are particularly vulnerable during the heating and cooling phases of fire. The main purpose of this research is to develop robust joints to CFT columns that are capable of providing very high rotational and tying resistances to make it possible for the connected beam to fully develop catenary action during the heating phase of fire attack and to retain integrity during the cooling phase of fire attack. This research employed the general finite element software ABAQUS to numerically model the behaviour of restrained structural subassemblies of steel beam to concrete filled tubular (CFT) columns and their joints in fire. For validation, this research compared the simulation and test results for 10 fire tests previously conducted at the University of Manchester. It was envisaged that catenary action in the connected beams at very large deflections would play an important role in ensuring robustness of steel framed structures in fire. Therefore, it was vital that the numerical simulations could accurately predict the structural behaviour at very large deflections. In particular, the transitional behaviour of the beam from compression to catenary action presented tremendous difficulties in numerical simulations due to the extremely high rate of deflection increase. This thesis will explain the methodology of a suitable simulation method, by introducing a pseudo damping factor. The comparison between the FE and the experimental results demonstrates that the 3-D finite element model is able to successfully simulate the fire tests. The validated ABAQUS model was then applied to conduct a thorough set of numerical studies to investigate methods of improving the survival temperatures under heating in fire of steel beams to concrete filled tubular (CFT) columns using reverse channel connection. This study investigated five different joint types of reverse channel connection: extended endplate, flush endplate, flexible endplate, hybrid flush/flexible endplate and hybrid extended/flexible endplate. The connection details investigated include reverse channel web thickness, bolt diameter and grade, using fire-resistant (FR) steel for different joint components (reverse channel, end plate and bolts) and joint temperature control. The effects of changing the applied beam and column loads were also considered. It is concluded that by adopting some of the joint details to improve the joint tensile strength and deformation capacity, it is possible for the beams to develop substantial catenary action to survive very high temperatures. This thesis also explains the implications on fire resistant design of the connected columns in order to resist the additional catenary force in the beam. The validated numerical model was also used to perform extensive parametric studies on steel framed structures using concrete filled tubular (CFT) columns with flexible reverse channel connection and fin plate connection to find means of reducing the risk of structural failure during cooling. The results lead to the suggestion that in order to avoid connection fracture during cooling, the most effective and simplest method would be to reduce the limiting temperature of the connected beam by less than 50°C from the limiting temperature calculated without considering any axial force in the beam.

Download or read book Reliability of Steel Columns Protected by Intumescent Coatings Subjected to Natural Fires written by Chao Zhang and published by Springer. This book was released on 2015-02-25 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studied the effect of aging of intumescent coatings (ICs) on the reliability of protected steel columns in fire condition and developed a probabilistic approach to assess the service life of ICs applied on steel columns. In the study, Monte Carlo simulations were conducted to obtain the reliability index or failure probability of steel columns protected by ICs subjected to compartment fires. The effect of aging of intumescent coatings on the failure probability of protected steel columns was investigated by using variable insulation property of intumescent coatings in the simulation. The test data on aging effect on insulation property of intumescent coatings from literature was used. Based on the reliability analysis, a probabilistic approach is given to determine the service life of intumescent coatings for steel columns. In that approach, the failure probability of the protected steel columns is compared with the target probability of the structural fire design. The approach can also be used for probabilistic analysis of steel columns protected by conventional inert fire protection materials.

Download or read book Seismic Performance of Composite Beam columns written by Shannon D. Paboojian and published by . This book was released on 1993 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "An experimental study was undertaken to investigate the cyclic strength and ductility of composite columns subjected to simulatedseismic loading conditions. Eight two-thirds scale specimens were tested, each consisting of a structural steel shape encased in reinforcedconcrete. Parameters studied in the test program included: the degree of concrete confinement required to achieve adequate ductility; the effectiveness of shear studs for developing flexural stiffness and capacity under combined loading; the distribution of transverse shear resistance among the elements of the composite column; and concrete compressive strength. The results of the test program indicate that composite columns possess exceptional ductility and strength under cyclic loading if the buckling of longitudinal reinforcement is inhibited. Furthermore, the steel shape provides the primary resistance to transverse shear during overloading, and shear studs are not effective in enhancing the resistance against lateral loading. The elastic secant stiffness of the composite section corresponding to initial yielding of the longitudinal reinforcement was found to be well approximated by using one-half the gross moment of inertia (0.5I[subscript g]) in conjunction with Young's modulus for concrete. A prediction method based on superimposing the individual strengths of the reinforced concrete and structural steel shape was found to provide good agreement with test results. Current AISC LRFD provisions were determined to grossly underestimate the flexural capacity of the test specimens, which were axially loaded to 20% of their nominal pure axial load capacity [sic]."

Download or read book Design Examples for High Strength Steel Reinforced Concrete Columns written by Sing-Ping Chiew and published by CRC Press. This book was released on 2018-04-17 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the companion volume to Design of High Strength Steel Reinforced Concrete Columns – A Eurocode 4 Approach. This book provides a large number of worked examples for the design of high strength steel reinforced concrete (SRC) columns. It is based on the Eurocode 4 approach, but goes beyond this to give much needed guidance on the narrower range of permitted concrete and steel material strengths in comparison to EC2 and EC3, and the better ductility and buckling resistance of SRC columns compared to steel or reinforced concrete. Special considerations are given to resistance calculations that maximize the full strength of the materials, with concrete cylinder strength up to 90 N/mm2, yield strength of structural steel up to 690 N/mm2 and yield strength of reinforcing steel up to 600 N/mm2 respectively. These examples build on the design principles set out in the companion volume, allowing the readers to practice and understand the EC4 methodology easily. Structural engineers and designers who are familiar with basic EC4 design should find these design examples particularly helpful, whilst engineering undergraduate and graduate students who are studying composite steel concrete design and construction should easily gain further understanding from working through the worked examples which are set out in a step-by-step clearly fashion.

Download or read book Concrete Filled Double Skin Steel Tubular Column with Hybrid Fibre Reinforced Polymer written by Kok Keong Choong and published by Springer Nature. This book was released on 2021-07-06 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the residual strength of the CFDST column, that can be used to determine the most suitable repair method in order to retrofit the column. The book elaborates on the behavior of CFDST column after being exposed to fire. This book also discusses the effectiveness of repair method using single and Hybrid Fibre Reinforced Polymer (FRP) of fire-damaged CFDST columns. It concludes by taking a look at different parameters such as thickness of outer steel tube and fire exposure time as factors affecting thermal properties/stability.

Download or read book Fire Behaviour of Self consolidating Concrete filled Double Skin Steel Tubular Columns written by Hui Lu and published by . This book was released on 2010 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concrete-filled double skin tubular column (CFDST) is an innovative type of steel-concrete element which has potential for use as piers in bridges and columns in buildings. The use of self-compacting concrete (SCC) in CFDST is seen as a solution to resolve the challenge of concrete compaction in the columns. The behaviour of CFDST under static and cyclic loading at ambient temperature has been extensively studied. The fire performance of CFDST is crucial due to the direct fire exposure of the outer steel tube. Nevertheless, there is at present little information about the fire performance of CFDST. This thesis reports on research into the fire performance of SCC-filled CFDST columns. The research aims to understand the fundamental behaviour of SCC-filled CFDST columns under standard fire exposure by means of standard fire tests and finite element modelling and to develop guidance for fire resistance design of the columns.Given the complexity in the responses of SCC-filled CFDST in fires, SCC-filled steel tubular stub columns (CFST), a specific type of CFDST without an inner steel tube, were selected for study in the first phase of the research program because of their simple configuration. Six SCC-filled CFST stub columns were prepared for standard fire tests and a finite element model to simulate the thermal and structural responses was developed. The main purpose of this phase of research was to develop a methodology for the further study of fire behaviour of CDFST columns by investigating how SCC affects the fire behaviour of composite columns and how steel tube affords confinement of the SCC to alter its behaviour at elevated temperature.A series of standard fire tests for CFDST columns was conducted in the second phase of the research. Six CFDST columns and sixteen CFDST stub columns were prepared for standard fire tests. A further two CFDST stub columns were prepared as reference specimens to test the axial capacity at ambient temperature. The columns and stub columns in the tests represent slender and stub columns in authentic engineering practice in which the failure modes are buckling and compression failure respectively. Data obtained from the fire tests, i.e. temperatures, axial deformation, failure modes and fire resistance, were used to investigate the fire behaviour of the columns. Interaction among the three components in the columns during fire exposure was clearly shown in the tests. Such interaction is beneficial to the fire performance of CFDST columns. Confinement of the tubes on the SCC prevents its spalling. Components which help each other through a load transfer mechanism are typical of the composite interaction in CFDST columns. Methods to enhance the fire resistance performance of CFDST, i.e. fire protection and steel fibre reinforced concrete, were also validated in the tests. In addition, the fire tests accumulated data to verify the numerical model in the subsequent research.A finite element model was developed and used to study in detail the fire behaviour of CFDST columns and for the parametric study in the third phase of the research. An advanced finite element model which accounts for material and geometric non-linearity and the interaction of tubes and concrete was proposed to simulate the thermal and structural responses of CFDST columns under standard fire exposure. A concrete material model for confined concrete in CFDST at elevated temperature was developed accordingly. The model was then used to analyse the fire behaviour of the columns in terms of stress, strain and load share in components which cannot be obtained directly from fire tests. Yield of the inner steel tube was found to be a major cause of the final failure of the columns. The influence of a number of parameters on the fire resistance performance of the columns was investigated. The parameters which have significant influence on the fire resistance performance of the columns were identified. Finally, guidelines for the fire resistance design of CFDST columns are proposed. These guidelines deal with how to appropriately select parameters for CFDST columns to ensure the columns achieve the anticipated fire resistance. Several practical design tables are also presented to illustrate how to use the guidelines to design CFDST columns to achieve a certain level of fire resistance.

Download or read book Performance of High Strength Reinforced Concrete Columns Under Shock Tube Induced Blast Loading written by Amer Hammoud and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Accounting for blast hazards has become one of the major concerns for civil engineers when analysing and designing structures. Recent terrorist attacks and accidental explosions have demonstrated the importance of mitigating blast effects on buildings to ensure safety, preserve life and ensure structural integrity. Innovative materials such as high-strength concrete, steel fibers, and high-strength steel offer a potential solution to increase resistance against extreme dynamic loading and improve the blast resilience of buildings. This thesis presents the results of an experimental and analytical study examining the effect of high-strength concrete, high-strength reinforcement and steel fibers on the blast behaviour of reinforced concrete columns. As part of the study, a total of seventeen reinforced concrete columns with different design combinations of concrete, steel fibers, and steel reinforcement were designed, constructed, and tested under gradually increasing blast loads using the University of Ottawa shock-tube facility. Criteria used to assess the blast performance of the columns and the effect of the test variables included overall blast capacity, mid-span displacements, cracking patterns, secondary fragmentation, and failure modes. The effect of concrete strength was found to only have a moderate effect on the blast performance of the columns. However, the results showed that benefits are associated with the combined use of high-strength concrete with steel fibers and high-strength reinforcement in columns tested under blast loads. In addition to the experimental program, a dynamic inelastic single-degree-of-freedom analysis was performed to predict the displacement response of the test columns. A sensitivity analysis was also conducted to examine the effect of various modelling parameters such as materials models, DIFs, and accumulated damage on the analytical predictions.

Download or read book Behavior of Expansive Concrete filled Steel Tubular EcfSt Columns Under Axial Loadings written by Abdulaziz Lazkani and published by . This book was released on 2016 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete-filled steel tubes (CFST) have been introduced in high-rise buildings in order to expedite construction and increase the confinement of concrete by the steel tube, and hence increase the capacity of the column cross-section. More recently, expansive additives (EAs) that counteract the shrinkage of concrete have been used in CFST to improve the bond between the concrete and steel tube. Although changing the confinement level exerted by the steel tube on concrete will have an impact on the behavior of CFSTs, little information is available regarding the influence of EAs on the mechanical characteristics of expansive concrete-filled steel tubular (ECFST) columns. The objective of this study is thus twofold: (i) to experimentally assess the behavior of concentrically loaded ECFSTs with different parameters, and (ii) to investigate the correlation between the test results and those obtained from different analytical modeling techniques and previous prediction approaches. The experimental program of this study consists of testing 16 CFST/ECFST columns. Fourteen concrete mixes are prepared with four different concrete strength values (16, 40, 50 and 90 MPa), four EA dosages (0%, 6%, 12% and 24%), and two concrete mixing approaches. Steel tubes in two different diameters (89.6 and 153.6 mm), thicknesses (2 and 3 mm), and lengths (370 and 1500 mm) are fabricated. In order to arrive at an effective prestressing action during the hardening process of concrete, two end plates are tied to each ECFST specimen immediately after casting. Each of the tested specimens is effectively instrumented using four LVDTs and several strain gauges. The behavior of the tested column specimens and those collected from previous studies is also assessed using two numerical modeling techniques, namely the fiber-based modeling (FBM) and finite element method (FEM), as well as using several prediction approaches. The results indicate that increasing the concrete strength significantly improves the axial load capacity of CFST columns by up to 76%. Using EA with a concrete strength of 40 MPa results in the most pronounced improvements in the axial load capacity of columns, whilst the most promising EA dosage for the ECFST short columns is 6%.Good agreement is observed between the experimental results and those obtained fromboth FBM and FEM in terms of ultimate load capacity, and hence the adopted modeling techniques can be used in further parametric studies on CFSTs/ECFSTs. It is also recommended to employ specific confined concrete models with the predictive approaches of Euro code 4 and AISC to arrive at the best correlation with CFST test results. This study provides insights into the behavior of pre-stressing CFST columns and presents test results with diverse parameters that contribute to filling gaps in the existing research, verify computational models and provide support for the development of prediction approaches for ECFSTs.