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Author: Sara M. Ibarra Publisher: ISBN: Category : Languages : en Pages : 318
Book Description
Chevron-braced frames are preferred structural systems by architects and contractors in low to mid-rise buildings for seismic design because they accommodate architectural elements while providing the necessary lateral stiffness and resistance. This system was more common prior to the advent of Special Concentrically Braced Frame (SCBF) seismic provisions based on capacity design in the late 1980’s, which require that the beam develop the idealized expected unbalanced capacities of full yielding of the tension brace and degraded capacity of the compression brace. This results in large and costly beams, which deter their use in construction. Previous experimental tests of chevron SCBFs with beam strengths that do not satisfy the theoretical unbalanced force prescribed by AISC SCBF Seismic Provisions result in a yielding beam plastic mechanism. These tests suggest that the current beam strength requirement is not necessary for assuring life safety and collapse prevention. Three single-story chevron SCBFs were tested at the University of Washington to further evaluate the beam yielding mechanism. One of the tested specimens had a beam weaker than any previously tested to establish a lower bound for comparison of seismic performance. A second specimen had A500 Gr. C braces to determine the impact of brace steel type on seismic performance. The third single-story specimen used a deeper beam to determine the effect of beam stiffness on frame resistance and ductility. Finally, a capstone 3-story chevron SCBF was tested at the National Center for Research on Earthquake Engineering in Taiwan to evaluate the system’s performance with a yielding beam. Results show that the beam yielding mechanism improved the deformability of the SCBF and the weaker beam did not compromise the capacity of the system if the beam was not excessively weak.
Author: Sara M. Ibarra Publisher: ISBN: Category : Languages : en Pages : 318
Book Description
Chevron-braced frames are preferred structural systems by architects and contractors in low to mid-rise buildings for seismic design because they accommodate architectural elements while providing the necessary lateral stiffness and resistance. This system was more common prior to the advent of Special Concentrically Braced Frame (SCBF) seismic provisions based on capacity design in the late 1980’s, which require that the beam develop the idealized expected unbalanced capacities of full yielding of the tension brace and degraded capacity of the compression brace. This results in large and costly beams, which deter their use in construction. Previous experimental tests of chevron SCBFs with beam strengths that do not satisfy the theoretical unbalanced force prescribed by AISC SCBF Seismic Provisions result in a yielding beam plastic mechanism. These tests suggest that the current beam strength requirement is not necessary for assuring life safety and collapse prevention. Three single-story chevron SCBFs were tested at the University of Washington to further evaluate the beam yielding mechanism. One of the tested specimens had a beam weaker than any previously tested to establish a lower bound for comparison of seismic performance. A second specimen had A500 Gr. C braces to determine the impact of brace steel type on seismic performance. The third single-story specimen used a deeper beam to determine the effect of beam stiffness on frame resistance and ductility. Finally, a capstone 3-story chevron SCBF was tested at the National Center for Research on Earthquake Engineering in Taiwan to evaluate the system’s performance with a yielding beam. Results show that the beam yielding mechanism improved the deformability of the SCBF and the weaker beam did not compromise the capacity of the system if the beam was not excessively weak.
Author: Farzad Naeim Publisher: Springer Science & Business Media ISBN: 1461516935 Category : Technology & Engineering Languages : en Pages : 816
Book Description
This handbook contains up-to-date existing structures, computer applications, and infonnation on planning, analysis, and design seismic design of wood structures. A new and very useful feature of this edition of earthquake-resistant building structures. Its intention is to provide engineers, architects, is the inclusion of a companion CD-ROM disc developers, and students of structural containing the complete digital version of the handbook itself and the following very engineering and architecture with authoritative, yet practical, design infonnation. It represents important publications: an attempt to bridge the persisting gap between l. UBC-IBC (1997-2000) Structural advances in the theories and concepts of Comparisons and Cross References, ICBO, earthquake-resistant design and their 2000. implementation in seismic design practice. 2. NEHRP Guidelines for the Seismic The distinguished panel of contributors is Rehabilitation of Buildings, FEMA-273, Federal Emergency Management Agency, composed of 22 experts from industry and universities, recognized for their knowledge and 1997. extensive practical experience in their fields. 3. NEHRP Commentary on the Guidelinesfor They have aimed to present clearly and the Seismic Rehabilitation of Buildings, FEMA-274, Federal Emergency concisely the basic principles and procedures pertinent to each subject and to illustrate with Management Agency, 1997. practical examples the application of these 4. NEHRP Recommended Provisions for principles and procedures in seismic design Seismic Regulations for New Buildings and practice. Where applicable, the provisions of Older Structures, Part 1 - Provisions, various seismic design standards such as mc FEMA-302, Federal Emergency 2000, UBC-97, FEMA-273/274 and ATC-40 Management Agency, 1997.
Author: Ronald D. Ziemian Publisher: John Wiley & Sons ISBN: 0470085258 Category : Technology & Engineering Languages : en Pages : 1120
Book Description
The definitive guide to stability design criteria, fully updated and incorporating current research Representing nearly fifty years of cooperation between Wiley and the Structural Stability Research Council, the Guide to Stability Design Criteria for Metal Structures is often described as an invaluable reference for practicing structural engineers and researchers. For generations of engineers and architects, the Guide has served as the definitive work on designing steel and aluminum structures for stability. Under the editorship of Ronald Ziemian and written by SSRC task group members who are leading experts in structural stability theory and research, this Sixth Edition brings this foundational work in line with current practice and research. The Sixth Edition incorporates a decade of progress in the field since the previous edition, with new features including: Updated chapters on beams, beam-columns, bracing, plates, box girders, and curved girders. Significantly revised chapters on columns, plates, composite columns and structural systems, frame stability, and arches Fully rewritten chapters on thin-walled (cold-formed) metal structural members, stability under seismic loading, and stability analysis by finite element methods State-of-the-art coverage of many topics such as shear walls, concrete filled tubes, direct strength member design method, behavior of arches, direct analysis method, structural integrity and disproportionate collapse resistance, and inelastic seismic performance and design recommendations for various moment-resistant and braced steel frames Complete with over 350 illustrations, plus references and technical memoranda, the Guide to Stability Design Criteria for Metal Structures, Sixth Edition offers detailed guidance and background on design specifications, codes, and standards worldwide.
Author: Bungale S. Taranath Publisher: McGraw-Hill Companies ISBN: Category : Architecture Languages : en Pages : 1032
Book Description
Taranath provides case studies of buildings constructed in the past two decades to give insight into why and how structural systems were chosen. Particular emphasis is placed on wind and seismic forces.
Author: Bryan Stafford Smith Publisher: Wiley-Interscience ISBN: Category : Architecture Languages : en Pages : 568
Book Description
Examines structural aspects of high rise buildings, particularly fundamental approaches to the analysis of the behavior of different forms of building structures including frame, shear wall, tubular, core and outrigger-braced systems. Introductory chapters discuss the forces to which the structure is subjected, design criteria which are of the greatest relevance to tall buildings, and various structural forms which have developed over the years since the first skyscrapers were built at the turn of the century. A major chapter is devoted to the modeling of real structures for both preliminary and final analyses. Considerable attention is devoted to the assessment of the stability of the structure, and the significance of creep and shrinkage is discussed. A final chapter is devoted to the dynamic response of structures subjected to wind and earthquake forces. Includes both accurate computer-based and approximate methods of analysis.
Author: Sara M. Ibarra
Author: Sara M. Ibarra
Author: Subhash Chandra Goel
Author: Farzad Naeim
Author: 
Author: Ronald D. Ziemian
Author: 
Author: Bungale S. Taranath
Author: Carl E. Grigorian
Author: Franz Hart
Author: Bryan Stafford Smith