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Author : Scott Michael Bolin
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (318 download)
Download or read book Assessment of Seismic Performance of Eccentrically Braced Frames written by Scott Michael Bolin and published by . This book was released on 1991 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mona Rais Esmaili
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (111 download)
Download or read book Seismic Performance of Eccentrically Braced Frames Designed According to Canadian Seismic Provisions written by Mona Rais Esmaili and published by . This book was released on 2015 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eccentrically braced frames (EBFs) are very effective lateral load resisting systems against earthquakes because of their hybrid behavior that includes great stiffness corresponding to the bracing actions, and considerable ductility owing to the inelastic activity of a small part of the floor beam called link. Current capacity design approach of EBFs is to confine the inelastic behavior of the frame primarily to the link such that other members remain essentially in elastic range. Limited research works are available in the literature studying the behavior of multi-storey EBFs designed according to the current Canadian seismic provisions. This thesis was aimed to study seismic performance of EBFs through nonlinear time history analysis (NLTHA) of three 4-, 8- and 14-storey chevron eccentrically braced frames. The selected EBFs were subjected to real and artificial ground motion records scaled to match the response spectrum of Vancouver. All the EBFs, designed according to current capacity design provisions, exhibited excellent seismic performance in terms of stiffness, strength, and ductility. It was observed that the inelastic link rotations of all EBFs were lower than the design limit of 0.08 rad, except for the two upper floors in 14-storey EBF where the link rotation slightly exceeded the limit. Seismic analysis also showed that maximum inelastic link shear forces exceeded the values recommended in design for many earthquake records. Although NLTHA can precisely estimate structural seismic responses, it requires high computational demands making it impractical for engineering design offices. On the other hand, the conventional pushover analysis does not consider contributions of higher modes to the structural responses and thus it often does not provide good estimation of seismic responses for taller buildings. Capacity-Spectrum Method (CSM) and modal pushover analysis (MPA) are two simple nonlinear static methods that have been proposed and recently used for seismic performance evaluation of few lateral load-resisting systems. This research further studies the application of CSM and MPA as alternatives for rigorous NLTHA to estimate seismic performance parameters of EBFs. The three selected EBFs were analyzed using MPA and CSM and the results were compared with nonlinear seismic analysis results. It was observed that both CSM and MPA predicted the peak top displacements of EBFs with sufficient accuracy.
Author : American Society of Civil Engineers
Publisher :
ISBN 13 : 9780784414859
Total Pages : 550 pages
Book Rating : 4.4/5 (148 download)
Download or read book ASCE Standard, ASCE/SEI, 41-17, Seismic Evaluation and Retrofit of Existing Buildings written by American Society of Civil Engineers and published by . This book was released on 2017 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standard ASCE/SEI 41-17 describes deficiency-based and systematic procedures that use performance-based principles to evaluate and retrofit existing buildings to withstand the effects of earthquakes.
Author : Keith D. Hjelmstad
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.F/5 ( download)
Download or read book Seismic Behavior of Active Beam Links in Eccentrically Braced Frames written by Keith D. Hjelmstad and published by . This book was released on 1983 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mojtaba Dyanati Badabi
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (128 download)
Download or read book Seismic Performance Evaluation and Economic Feasibility of Self-centering Concentrically Braced Frames written by Mojtaba Dyanati Badabi and published by . This book was released on 2016 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-centering concentrically braced frame (SC-CBF) systems have been developed to increase the drift capacity of braced frame systems prior to damage to reduce post-earthquake damages in braced frames. However, due to special details required by the SC-CBF system, the construction cost of an SC-CBF is expected to be higher than that of a conventional CBF. While recent experimental research has shown better seismic performance of SC-CBF system subjected to design basis earthquakes, superior seismic performance of this system needs to be demonstrated for both structural and nonstructural components in all ground motion levels and more building configurations. Moreover, Stakeholders would be attracted to utilize SC-CBF if higher construction cost of this system can be paid back by lower earthquake induced losses during life time of the building. In this study, the seismic performance and economic effectiveness of SC-CBFs are assessed and compared with CBF system in three building configurations. First, probabilistic demand formulations are developed for engineering demand parameters (inter-story drift, residual drift and peak floor acceleration) using results of nonlinear time history analysis of the buildings under suites of ground motions. Then, Seismic fragility curves, engineering demand (inter-story drift, peak floor acceleration and residual drift) hazard curve and annual probabilities of exceeding damage states are used to evaluate and compare seismic performance of two systems. Finally, expected annual loss and life cycle cost of buildings are evaluated for prototype buildings considering both direct and indirect losses and prevailing uncertainties in all levels of loss analysis. These values are used evaluate economic benefit of using SC-CBF system instead of CBF system and pay-off time (time when the higher construction cost of SC-CBF system is paid back by the lower losses in earthquakes) for building configurations. Additionally, parametric study is performed to find acceptable increase in cost of SC-CBFs comparing to CBFs and impact of economic discount factor, ground motion suite and building occupancies on economic effectiveness of the SC-CBF system in three configurations. Results of this study indicates that, SC-CBF system generally shows better seismic performance due to damages to structural and non-structural drift sensitive components but worse performance due to damages to acceleration sensitive components. Therefore, loss mitigation in structural and non-structural damages are major source of economic benefit in SC-CBFs. SC-CBF system is not feasible for high rise buildings and low seismic active locations. If the cost of SC-CBFs are twice as CBF frames, the higher cost is paid back in a reasonable time during the life time of the buildings. SC-CBFs are more feasible for banks/financial institutions than general office buildings.
Author : John L. III Harris
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (95 download)
Download or read book Assessment of First Generation Performance-based Seismic Design Methods for New Steel Buildings Volume 1 written by John L. III Harris and published by . This book was released on 2015 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacob A. Powell
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (71 download)
Download or read book Evaluation of Special Concentrically Braced Frames for Improved Seismic Performance and Constructability written by Jacob A. Powell and published by . This book was released on 2010 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 55 pages
Book Rating : 4.:/5 (947 download)
Download or read book Assessment of Fire Generation Performance-based Seismic Design Methods for New Steel Buildings written by and published by . This book was released on 2015 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohammad Ghasem Vetr Tamijani
Publisher :
ISBN 13 :
Total Pages : 155 pages
Book Rating : 4.:/5 (245 download)
Download or read book Seismic Behavior, Analysis and Design of Eccentrically Braced Frames with Vertical Shear Links (V-EBFs) written by Mohammad Ghasem Vetr Tamijani and published by . This book was released on 1998 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James M. Ricles
Publisher :
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.F/5 ( download)
Download or read book Dynamic Analysis of Seismically Resistant Eccentrically Braced Frames written by James M. Ricles and published by . This book was released on 1987 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenichi Ohi
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (318 download)
Download or read book Seismic Performance of Steel Moment Frames Plastically Designed by Least Squares Stress Fields written by Kenichi Ohi and published by . This book was released on 1989 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Denis M. Regan
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (32 download)
Download or read book Review and Evaluation of Design Methods for Eccentrically Braced Frames written by Denis M. Regan and published by . This book was released on 1988 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.:/5 (12 download)
Download or read book Seismic Performance Assessment of Buildings: Implementation guide written by and published by . This book was released on 2018 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kelley Deanna Michelle Grabner
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)
Download or read book Performance Assessment of Special Concentrically-braced Frames in Moderate Seismic Regions written by Kelley Deanna Michelle Grabner and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Applied Technology Council
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.3/5 (91 download)
Download or read book Tentative Provisions for the Development of Seismic Regulations for Buildings written by Applied Technology Council and published by . This book was released on 1978 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Po-Chien Hsiao
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (851 download)
Download or read book Seismic Performance Evaluation of Concentrically Braced Frames written by Po-Chien Hsiao and published by . This book was released on 2012 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concentrically braced frames (CBFs) are broadly used as lateral-load resisting systems in buildings throughout the US. In high seismic regions, special concentrically braced frames (SCBFs) where ductility under seismic loading is necessary. Their large elastic stiffness and strength efficiently sustains the seismic demands during smaller, more frequent earthquakes. During large, infrequent earthquakes, SCBFs exhibit highly nonlinear behavior due to brace buckling and yielding and the inelastic behavior induced by secondary deformation of the framing system. These response modes reduce the system demands relative to an elastic system without supplemental damping. In design the re reduced demands are estimated using a response modification coefficient, commonly termed the R factor. The R factor values are important to the seismic performance of a building. Procedures put forth in FEMAP695 developed to R factors through a formalized procedure with the objective of consistent level of collapse potential for all building types. The primary objective of the research was to evaluate the seismic performance of SCBFs. To achieve this goal, an improved model including a proposed gusset plate connection model for SCBFs that permits accurate simulation of inelastic deformations of the brace, gusset plate connections, beams and columns and brace fracture was developed and validated using a large number of experiments. Response history analyses were conducted using the validated model. A series of different story-height SCBF buildings were designed and evaluated. The FEMAP695 method and an alternate procedure were applied to SCBFs and NCBFs. NCBFs are designed without ductile detailing. The evaluation using P695 method shows contrary results to the alternate evaluation procedure and the current knowledge in which short-story SCBF structures are more venerable than taller counterparts and NCBFs are more vulnerable than SCBFs.
Author : Michael D. Engelhardt
Publisher :
ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.:/5 (318 download)
Download or read book Behavior of Long Links in Eccentrically Braced Frames written by Michael D. Engelhardt and published by . This book was released on 1989 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
