Download or read book The Behaviour of Cold formed Steel Built up Structural Members written by Francisco Meza Ortiz and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behaviour and Design of Cold formed Steel Built up Section Structural Members written by 李秋云 and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Behaviour of Cold Formed Steel Built Up Section Beams written by Liping Wang 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, "Structural Behaviour of Cold-formed Steel Built-up Section Beams" by Liping, Wang, 王莉萍, 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: The advantages of using cold-formed steel are high strength-to-weight ratio, flexibility in fabricating different cross-section shapes, easy for construction and so on. Cold-formed steel sheets are usually manufactured into open sectional profiles by cold-rolling and brake-pressing methods. Doubly symmetric built-up sections, with the advantage of having larger torsional rigidity compared to traditional singly symmetric open sections, have great potential to extend the application of cold-formed steel to structural members with larger scale. The doubly symmetric built-up open and closed sections can be made by connecting two channel sections using self-tapping screws, which are also convenient for industrialized production. In this study, the structural performance of cold-formed steel built-up section beams with intermediate stiffeners and built-up section beams with web perforations was examined through experimental and numerical investigations. The impact of different screw arrangements on the moment capacities of built-up section beams was also studied. A total of 113 beam tests that include simply supported beam tests of 16 pairs of channel sections with stiffened webs, 19 built-up sections with intermediate stiffeners, 43 built-up sections with web perforations, as well as 35 built-up sections with different screw arrangements was conducted. The material properties of the test specimens were also obtained by tensile coupon tests. The main objective of the experimental investigation is to obtain the section moment capacities and understand the structural behaviour of the built-up sections under bending. Finite element (FE) models of the beam specimens were also developed and numerical analysis that includes material nonlinearity, geometric nonlinearity and contact nonlinearity (for built-up section beams only) was performed and the results were verified against the test results. The validated FE models were employed for extensive parametric studies of 382 numerical simulations that include 101 channel sections with stiffened webs, 113 built-up sections with intermediate stiffeners, 80 built-up sections with web perforations, as well as 88 built-up sections having different screw arrangements. A wide range of section slenderness was considered in the built-up sections and different failure modes of beams were investigated. Therefore, a comprehensive study on the influence of stiffener features, different sizes of web holes, and various screw arrangements on the structural performance of cold-formed steel built-up section beams was carried out. The results obtained from the experimental and numerical studies were employed for evaluating the design rules of cold-formed steel built-up section beams. It should be mentioned that the existing direct strength method (DSM) for cold-formed steel members does not cover the design of built-up section beams. Hence, suitable design rules based on DSM have been proposed for cold-formed steel built-up section beams with intermediate stiffeners and built-up section beams with web perforations under bending. The design equations for considering the screw spacings of built-up closed section beams have also proposed. Furthermore, the suitability of the modified design rules, as well as the existing DSM for cold-formed steel built-up section beams was also evaluated through a reliability analysis. Subjects: Steel - Cold working St

Download or read book Guide to Stability Design Criteria for Metal Structures written by Theodore V. Galambos and published by John Wiley & Sons. This book was released on 1998-06-15 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides simplified and refined procedures applicable to design and to accessing design limitations and offers guidance to design specifications, codes and standards currently applied to the stability of metal structures.

Download or read book Predictions of Flexural Behaviour of Built up Cold formed Steel Sections written by Papia Sultana and published by . This book was released on 2007 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, light gauge cold-formed steel members have been used extensively in low and mid- rise residential building construction. In cold-formed steel design there are several applications where built-up box girders are used to resist load induced in a structure when a single section is not sufficient to carry the design load. The cold-formed steel box girders may be subjected to eccentric loading when the web of one of the sections receives the load and transfers it through the connection to another section. There may be an unequal distribution of load in built-up girder assemblies loaded from one side. In the current North American Specification for the Design of Cold-Formed Steel Structural Members (CSA-S136-01, 2001), there is no guideline or design equation to calculate the flexural capacity of this type of section. AISI cold-formed steel framing design guide (2002) has recommended that the moment of resistance and inertia of the built-up section are the simple addition of the component parts, based on deflection compatibility of the two sections. However, this design approximation has not been justified by any experimental or numerical study. Very little information was found in literature about this topic. The objective of this study is the investigation of the flexural behaviour of built-up box girders assembled from cold-formed stud and track sections when subjected to eccentric loading. Finite element analysis is conducted for this purpose, being much more economical than expensive experimental testing. Detailed parametric studies are carried out to identify the factors affecting the flexural capacity of built-up cold-formed steel sections. The parametric results are used to develop a design equation for calculating the flexural capacity of built-up cold-formed steel sections.

Download or read book Behaviour of High Strength Steel Columns at Elevated Temperatures written by Ju Chen and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Behaviour of High Strength Steel Columns at Elevated Temperatures" by Ju, Chen, 陳駒, 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: Abstract of thesis entitled BEHAVIOUR OF HIGH STRENGTH STEEL COLUMNS AT ELEVATED TEMPERATURES Submitted by Ju Chen for the degree of Doctor of Philosophy at The University of Hong Kong in April 2007 In this study, the structural behaviour of high strength steel columns at elevated temperatures is investigated. The current fire resistant design rules for steel columns in most of the specifications are generally based on the investigation of hot-rolled steel having normal strength. Although similarities between the conventional normal strength and high strength steel exist, there is sufficient diversity in their mechanical properties for different treatments in design. Therefore, there is a need to develop the design rules of high strength steel columns at elevated temperatures. Material properties play an important role in the performance of steel structural members. Hence, an extensive material test program was first performed on high strength steel at elevated temperatures. The high strength steel includes cold-formed steel, stainless steel as well as quenched and tempered carbon steel. Structural carbon steel having normal strength was also tested for comparison. The mechanical properties and stress-strain curves of the tested steel were obtained and compared with predictions from the American, Australian, British and European specifications. In addition, equations predicting the mechanical properties and stress-strain curve model for the tested materials at elevated temperatures were proposed. The column behaviour of cold-formed steel built-up closed sections with intermediate web stiffeners at normal room temperature was investigated. The test results were compared with the design strengths obtained using the direct strength method. An accurate and reliable finite element model of cold-formed steel built-up columns was developed and verified against the test results. A parametric study was carried out using the verified finite element model. Design rules for cold-formed steel built-up closed section columns at normal room and elevated temperatures modified from the direct strength method were proposed. The behaviour of cold-formed steel lipped channel columns at elevated temperatures has been investigated using finite element method. The suitability of the effective width method and direct strength method for cold-formed steel lipped channel columns at elevated temperatures was evaluated. The behaviour of quenched and tempered high strength carbon steel columns at elevated temperatures was also investigated. The finite element analysis results were compared with the design strengths using the American, Australian and European specifications. Generally, it is shown that the effective width method and direct strength method using the reduced material properties conservatively predicted the column strengths. DOI: 10.5353/th_b3793655 Subjects: Columns, Iron and steel - Testing Metal at high temperatures

Download or read book Behaviour and Design of Cold Formed High Strength Steel Tubular Members written by Jialin Ma and published by Open Dissertation Press. This book was released on 2017-01-26 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Behaviour and Design of Cold-formed High Strength Steel Tubular Members" by Jialin, Ma, 馬嘉麟, 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: Steel is categorised into mild steel and high strength steel according to the material strengths. The material properties of high strength steel usually cannot be simply represented by traditional mild steel stress-strain curves, thus the behaviour of high strength steel members are generally different from those for mild steel products. Tubular members have great potential in structural engineering due to their aesthetic appearance and strong resistance against torsional buckling. Cold-formed steel tubular sections are preferred in some applications as they are easier and less energy consuming to fabricate when compared to hot-rolled steel and built-up steel sections. The aims of this study are to investigate experimentally and numerically the behaviour of cold-formed high strength tubular structural members, and develop design guidance for these products. The experimental programme in this study included 66 tensile coupon tests, residual stress measurements on 3 sections, 25 stub column tests, 25 beam tests, 32 long beam-column tests and 83 short beam-column tests. The tubular sections consisted of 9 square hollow sections, 2 rectangular hollow sections and 6 circular hollow sections. The specimens were categorised into three series according to their nominal yield stresses: H-series (700 MPa), V-series (900 MPa) and S-series (1100 MPa). The stub columns were tested in fixed-ended boundary conditions. The behaviour of beams was investigated through four-point bending tests. The beam-columns were tested between a set of knife edges with equal load eccentricities at both ends, which provided single curvature and uniform end moment to the specimens. Finite element models were developed and validated against experiments using Abaqus software. The influences of material properties, residual stresses, local and global geometric imperfections and other input factors were analysed. The results showed that the models are capable of replicating the key test results, load-deformation histories and failure modes of the specimens. Upon validation of finite element models, a comprehensive parametric study programme was carried out to supplement the experimental data. The parametric study consisted of 321 stub columns, 423 beams and 540 beam-columns. The test and finite element data were further used to evaluate the codified design rules from the current American, Australian/New Zealand and European design codes for steel structures. The Direct Strength Method was also evaluated for the cold-formed high strength steel tubular members in this study. In the comparison, the compactness criteria for tubular sections were examined and the predicted design strengths were also compared to the test and finite element results. Improved design recommendations are given accordingly. Reliability analysis were performed for codified and proposed design rules. Subjects: Tubular steel structures Steel, High strength - Cold working

Download or read book Recent Research and Developments in Cold formed Steel Design and Construction written by Wei-wen Yu and published by . This book was released on 1982 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Cold formed Steel Structures written by ECCS - European Convention for Constructional Steelwork and published by John Wiley & Sons. This book was released on 2013-08-06 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is concerned with design of cold-formed steel structures in building based on the Eurocode 3 package, particularly on EN 1993-1-3. It contains the essentials of theoretical background and design rules for cold-formed steel sections and sheeting, members and connections for building applications. Elaborated examples and design applications - more than 200 pages - are included in the respective chapters in order to provide a better understanding to the reader.

Download or read book Cold formed Steel in Tall Buildings written by Rolf Baehre and published by McGraw-Hill Companies. This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed under the auspices of the Council on Tall Buildings and Urban Habitat, a comprehensive overview of the special design features, applications, and behavior of cold-formed steel members and connectors as they pertain to the construction of tall buildings. Presents methods and recommended practices, and examples from Europe and North and South America. For civil engineers. Annotation copyright by Book News, Inc., Portland, OR

Download or read book Specification for the Design of Cold formed Stainless Steel Structural Members Specification for the design of cold formed steel structural members reprinted 1972 with Addendum no 1 written by American Iron and Steel Institute and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Load and Resistance Factor Design of Cold formed Steel Structural Members written by Boonsong Supornsilaphachai and published by . This book was released on 1980 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In a traditional design, the Allowable Stress method has long been used for the design of cold-formed steel structures. In this design approach, the allowable stress is always used to prevent the possible structural failure by using an appropriate factor of safety selected primarily on the basis of engineering judgment and long-time experience. Recently, the concepts of risk and reliability analysis have been successfully applied to many fields of engineering. By applying the theories of probability and statistics, the load and resistance design criteria for steel structures have been developed for the design of hot-rolled steel shapes and built-up members. This method is based on the ultimate strength and serviceability of the structural members and connections. In order to develop the new design criteria for cold-formed steel structural members, a research project entitled "Load and Resistance Factor Design (LRFD) of Cold-Formed Steel" has been recently conducted at the University of Missouri-Rolla and Washington University. This study has included the selection of a probabilistic model, the evaluation of load factors, the calibration of safety indexes for the allowable stress design criteria issued by the American Iron and steel Institute, and the determination of resistance factors. Based on the safety indexes selected for cold-formed steel structural members and connections, the load and resistance factor design criteria for cold-formed steel have been developed by using the first order probabilistic theory and the statistical data on mechanical properties of materials and the test results obtained from previous research. In this method, appropriate load factors and resistance factors are applied to specified loads and nominal resistance to ensure that the limit state is not exceeded. Because these factors reflect the uncertainties of analysis, design, loading, material properties and fabrication, this design method can provide a more uniform overall safety and structural reliability"--Abstract, pages ii-iii.

Download or read book Structural Design Actions written by Standards Australia Limited and published by . This book was released on 2021 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Standard sets out procedures for determining wind speeds and resulting wind actions to be used in the structural design of structures subjected to wind actions other than those caused by tornadoes. To be read in conjunction with AS/NZS 1170.0." - Standards NZ website.

Download or read book North American Specification for the Design of Cold formed Steel Structural Members written by American iron and steel institute. Committee on specifications and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Structural Behavior of Cold formed Steel Members with Perforated Elements written by Charles S. Davis and published by . This book was released on 1972 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Analytical and experimental investigations have been conducted to study the influence of perforations on the structural behavior of cold-formed steel structural members. Since in many cases, the load-carrying capacity of cold-formed steel members depends on the buckling behavior of individual component elements, emphasis has been concentrated on the study of the instability and post-buckling strength of perforated elements. In this investigation, the buckling loads and post-buckling strength of stiffened and unstiffened compression elements having single circular and square holes have been studied analytically by using the finite element method. The effects of different holes on the buckling coefficient have been verified by the experimental data obtained from the testing of columns and beams with perforated flanges. The equations for determination of the effective width have been developed on the basis of the post-buckling strength of compression elements. An experimental investigation has been conducted to study the influence of holes on the shear buckling load of beam webs. The test data was compared with analytical results of other investigators. Better correlation was found between the test data and the analytical solution for the simple support condition. A load reduction equation was derived on the basis of the experimental study. The crippling strength of perforated webs were also investigated experimentally. In this investigation, twenty tests were conducted to cover a practical range of height-to-thickness ratios. Based on the results obtained from tests, load reduction factors were derived for steel members with circular and square perforated webs. The stability of perforated plates subjected to equal and opposite point loads were investigated. The trend of this analytic study was found in agreement with the experimental investigation. Design recommendations are developed for: perforated stiffened compression elements, perforated unstiffened compression elements, perforated shear webs, and crippling of perforated webs"--Abstract, pages ii-iii.

Download or read book Cold formed Steel Structures written by Wei-wen Yu and published by . This book was released on 1979 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modern Trends in Research on Steel Aluminium and Composite Structures written by Marian A. Giżejowski and published by Routledge. This book was released on 2021-06-09 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern Trends in Research on Steel, Aluminium and Composite Structures includes papers presented at the 14th International Conference on Metal Structures 2021 (ICMS 2021, Poznań, Poland, 16-18 June 2021). The 14th ICMS summarised a few years’ theoretical, numerical and experimental research on steel, aluminium and composite structures, and presented new concepts. This book contains six plenary lectures and all the individual papers presented during the Conference. Seven plenary lectures were presented at the Conference, including "Research developments on glass structures under extreme loads", Parhp3D – The parallel MPI/openMPI implementation of the 3D hp-adaptive FE code", "Design of beam-to-column steel-concrete composite joints: from Eurocodes and beyond", "Stainless steel structures – research, codification and practice", "Testing, modelling and design of bolted joints – effect of size, structural properties, integrity and robustness", "Design of hybrid beam-to-column joints between RHS tubular columns and I-section beams" and "Selected aspects of designing the cold-formed steel structures". The individual contributions delivered by authors covered a wide variety of topics: – Advanced analysis and direct methods of design, – Cold-formed elements and structures, – Composite structures, – Engineering structures, – Joints and connections, – Structural stability and integrity, – Structural steel, metallurgy, durability and behaviour in fire. Modern Trends in Research on Steel, Aluminium and Composite Structures is a useful reference source for academic researchers, graduate students as well as designers and fabricators.