Download or read book Performance Based Analytics Driven Seismic Design of Steel Moment Frame Buildings written by XINGQUAN GUAN and published by . This book was released on 2021 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the embrace of the performance-based seismic design as the state-of-the-art design method, recent emphasis has been placed on eliminating its drawbacks and facilitating its application in practice. This study aims to propose an alternative design method: performance-based analytics-driven seismic design, which is applied to steel moment resisting frame buildings. First, the seismic performance of self-centering (with post-tensioned connections) and conventional moment resisting frames (with reduced-beam section connection) is comparatively assessed. The comparison indicates that the economic benefit for adopting the post-tensioned connection is not significant. Then, an end-to-end computational platform, which automates the seismic design, nonlinear structural model construction, and response simulation (static and dynamic) of steel moment resisting frames is developed. Using this platform, a comprehensive database is developed, which includes 621 special steel moment resisting frames designed in accordance with modern codes and standards and their corresponding nonlinear structural models and seismic responses (i.e., peak story drifts, peak floor accelerations, and residual story drifts). Using this database, the efficacy of mechanics-based, data-driven, and hybrid (combination of mechanics-based and data driven) approaches to estimating the seismic drift demand are evaluated. The evaluation results reveal that the hybrid approach has the best performance whereas the mechanics-based model has the lowest performance. Next, a set of non-parametric and parametric surrogate models are developed for estimating the engineering demand parameter distributions. A comparative assessment of the proposed surrogate models and the simplified analysis method proposed by FEMA P-58 is conducted to demonstrate the superior predictive performance of the former. Finally, the effect of various design variables on the collapse performance of steel moment resisting frames are evaluated. The research findings presented in this study helps to facilitate the application of 2nd performance-based earthquake engineering framework in practice and thus better help to create earthquake-resilient communities.

Download or read book Performance Based Seismic Design of Concrete Structures and Infrastructures written by Plevris, Vagelis and published by IGI Global. This book was released on 2017-02-14 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid design and craftsmanship are a necessity for structures and infrastructures that must stand up to natural disasters on a regular basis. Continuous research developments in the engineering field are imperative for sustaining buildings against the threat of earthquakes and other natural disasters. Performance-Based Seismic Design of Concrete Structures and Infrastructures is an informative reference source on all the latest trends and emerging data associated with structural design. Highlighting key topics such as seismic assessments, shear wall structures, and infrastructure resilience, this is an ideal resource for all academicians, students, professionals, and researchers that are seeking new knowledge on the best methods and techniques for designing solid structural designs.

Download or read book Performance Based Analytics Driven Seismic Retrofit of Woodframe Buildings written by Zhengxiang Yi and published by . This book was released on 2020 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woodframe construction is commonly used for single and multifamily residential buildings in the United States. In many parts of California, multifamily woodframe residential buildings are constructed with open first stories, which have much less strength and stiffness compared to the ones above. In older single-family residences, the "crawl space" is constructed with unbraced and unbolted cripple walls. Both these conditions lead to a soft-story response during seismic loading, resulting significant damage, economic losses and even collapse. This type of vulnerability is often addressed through seismic retrofits, which can be mandated by local jurisdictions (e.g., the Los Angeles Soft-Story Ordinance) or incentivized by state or local entities (e.g., the California Earthquake Authority Brace and Bolt Program). A key challenge in implementing these retrofit programs (mandated or incentivized) is quantifying the improvements in performance at the individual and portfolio scale and creating design procedures that maximize the overall benefit. This research integrates nonlinear structural modeling, performance-based assessments and advanced statistical and machine learning techniques to quantify the benefit of soft-story woodframe building retrofit and develop optimal design solutions that maximize regional performance. The considered construction types include single-family houses with unbraced cripple walls developed as part of the recently completed Pacific Earthquake Engineering Research Institute (PEER) and California Earthquake Authority (CEA) project and multi-family residences with soft, weak and open front wall lines (SWOF). An end-to-end computational platform is developed to automate the construction and analysis of archetype numerical models in OpenSees and conduct seismic evaluations based on the PEER performance-based earthquake engineering framework. The performance of existing and retrofitted buildings is assessed in terms of collapse safety and direct (due to earthquake damage) economic losses. The effect of retrofit and various structural characteristics is illuminated for the single-family cripple wall houses. 2^k full factorial experiment design combined with hypothesis testing is used to identify the most influential structural properties. Two story buildings performed worse than their one-story counterparts and pre-1945 buildings performed better than pre-1955 construction. Building performance is found to be positively correlated with cripple wall heights and cripple wall retrofits provided significant overall improvements. Surrogate models are developed as a compact statistical link between key structural characteristics and seismic performance. Several machine learning algorithms are investigated for predicting the building median collapse intensity and expected annual loss using the cripple wall height, seismic weight, damping ratio and material properties as features. The XGBoost algorithm provides the most accurate prediction and on average, limits the prediction error to less than 10%. Using the well-developed machine learning models, additional sensitivity analyses are conducted and the effect of model uncertainty on collapse safety and expected annual losses is quantified using Monte Carlo simulation. For the SWOF buildings, a multi-scale cost-benefit analysis of the Los Angeles Soft-Story Ordinance Retrofit is performed. Individual buildings take an average of four to five years for the reduced earthquake losses to exceed the one-time retrofit cost. At the portfolio-scale, the average cost-benefit ratio is found to be 0.32 for the hypothetical M 7.1 Puente Hills scenario earthquake. A stochastic event-set cost-benefit assessment is also performed, where all events (approximately 8,000) that are significant to the region are considered. From this assessment, it is determined that the probability of achieving a desirable cost-benefit ratio (value between 0.0 and 1.0) within a 50-year period is approximately 0.9. Lastly, a retrofit design optimization framework is proposed with the goal of maximizing performance-based benefits at the regional scale. The methodology relies a machine learning-based surrogate model to predict seismic performances of retrofitted buildings given the design parameters. Then, a stochastic optimization algorithm is implemented to find the retrofit designs that maximize the improvement in seismic performance for the entire portfolio under a set of pre-defined constraints. The algorithmic retrofit leads to collapse losses that are comparable to the Los Angeles Ordinance guidelines while using only 60% of the resources. The performance-oriented framework is shown to address the inefficiency of conventional strength-based retrofit policies.

Download or read book Recommended Seismic Design Criteria for New Steel Moment Frame Buildings FEMA 350 written by Federal Emergency Agency and published by FEMA. This book was released on 2013-03-16 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings has been developed by the SAC Joint Venture under contract to the Federal Emergency Management Agency (FEMA) to provide organizations engaged in the development of consensus design standards and building code provisions with recommended criteria for the design and construction of new buildings incorporating moment-resisting steel frame construction to resist the effects of earthquakes. It is one of a series of companion publications addressing the issue of the seismic performance of steel moment-frame buildings. The set of companion publications includes: FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings. This publication provides recommended criteria, supplemental to FEMA-302 - 1997 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, for the design and construction of steel moment-frame buildings and provides alternative performance-based design criteria. FEMA-351 - Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings. This publication provides recommended methods to evaluate the probable performance of existing steel moment-frame buildings in future earthquakes and to retrofit these buildings for improved performance. FEMA-352 - Recommended Postearthquake Evaluation and Repair Criteria for Welded Steel Moment-Frame Buildings. This publication provides recommendations for performing postearthquake inspections to detect damage in steel moment-frame buildings following an earthquake, evaluating the damaged buildings to determine their safety in the postearthquake environment, and repairing damaged buildings. FEMA-353 - Recommended Specifications and Quality Assurance Guidelines for Steel Moment-Frame Construction for Seismic Applications. This publication provides recommended specifications for the fabrication and erection of steel moment frames for seismic applications. The recommended design criteria contained in the other companion documents are based on the material and workmanship standards contained in this document, which also includes discussion of the basis for the quality control and quality assurance criteria contained in the recommended specifications. The information contained in these recommended design criteria, hereinafter referred to as Recommended Criteria, is presented in the form of specific design and performance evaluation procedures together with supporting commentary explaining part of the basis for these recommendations.

Download or read book Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment Frame Buildings FEMA 351 written by Federal Emergency Agency and published by FEMA. This book was released on 2013-03-16 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, FEMA-351 - Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings has been developed by the SAC Joint Venture under contract to the Federal Emergency Management Agency (FEMA) to provide structural engineers with recommended criteria for evaluation of the probable performance of existing steel moment-frame buildings in future earthquakes and to provide a basis for updating and revision of evaluation and rehabilitation guidelines and standards. It is one of a series of companion publications addressing the issue of the seismic performance of steel moment-frame buildings. The set of companion publications includes: FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings. This publication provides recommended criteria, supplemental to FEMA-302 - 1997 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, for the design and construction of steel moment-frame buildings and provides alternative performance-based design criteria. FEMA-351 - Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings. This publication provides recommended methods to evaluate the probable performance of existing steel moment-frame buildings in future earthquakes and to retrofit these buildings for improved performance. FEMA-352 - Recommended Postearthquake Evaluation and Repair Criteria for Welded Steel Moment-Frame Buildings. This publication provides recommendations for performing postearthquake inspections to detect damage in steel moment-frame buildings following an earthquake, evaluating the damaged buildings to determine their safety in the postearthquake environment, and repairing damaged buildings. FEMA-353 - Recommended Specifications and Quality Assurance Guidelines for Steel Moment-Frame Construction for Seismic Applications. This publication provides recommended specifications for the fabrication and erection of steel moment frames for seismic applications. The recommended design criteria contained in the other companion documents are based on the material and workmanship standards contained in this document, which also includes discussion of the basis for the quality control and quality assurance criteria contained in the recommended specifications. The information contained in these recommended evaluation and upgrade criteria, hereinafter referred to as Recommended Criteria, is presented in the form of specific recommendations for design and performance evaluation procedures together with supporting commentary explaining part of the basis for these recommendations.

Download or read book Recommended Seismic Design Criteria for New Steel Moment frame Buildings written by SAC Joint Venture. Guidelines Development Committee and published by . This book was released on 2000 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Recommended Specifications and Quality Assurance Guidelines for Steel Moment Frame Construction for Seismic Applications FEMA 353 written by Federal Emergency Agency and published by FEMA. This book was released on 2013-03-15 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, FEMA-353 - Recommended Specifications and Quality Assurance Guidelines for Steel Moment-Frame Construction for Seismic Applications has been prepared by the SAC Joint Venture, under contract to the Federal Emergency Management Agency, to indicate those standards of workmanship for structural steel fabrication and erection deemed necessary to achieve reliably the design performance objectives contained in the set of companion publications prepared under this same contract: FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings, which provides recommended criteria, supplemental to FEMA-302, 1997 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, for the design and construction of steel moment-frame buildings and provides alternative performance-based design criteria; FEMA-351 - Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings, which provides recommended methods to evaluate the probable performance of existing steel moment-frame buildings in future earthquakes and to retrofit these buildings for improved performance; and FEMA-352 - Recommended Postearthquake Evaluation and Repair Criteria for Welded, Steel Moment-Frame Buildings, which provides recommendations for performing postearthquake inspections to detect damage in steel moment-frame buildings following an earthquake, evaluating the damaged buildings to determine their safety in the postearthquake environment, and repairing damaged buildings. The recommended design criteria contained in these three companion reports are based on the material and workmanship standards contained in this document, which also includes discussion of the basis for the quality control and quality assurance criteria contained in the recommended specifications.

Download or read book Seismic Design Methods for Steel Building Structures written by George A. Papagiannopoulos and published by Springer Nature. This book was released on 2022-01-01 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book, after two introductory chapters on seismic design principles and structural seismic analysis methods, proceeds with the detailed description of seismic design methods for steel building structures. These methods include all the well-known methods, like force-based or displacement-based methods, plus some other methods developed by the present authors or other authors that have reached a level of maturity and are applicable to a large class of steel building structures. For every method, detailed practical examples and supporting references are provided in order to illustrate the methods and demonstrate their merits. As a unique feature, the present book describes not just one, as it is the case with existing books on seismic design of steel structures, but various seismic design methods including application examples worked in detail. The book is a valuable source of information, not only for MS and PhD students, but also for researchers and practicing engineers engaged with the design of steel building structures.

Download or read book Seismic Design of Steel Structures written by Victor Gioncu and published by CRC Press. This book was released on 2013-11-20 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing real world applications for different structural types and seismic characteristics, Seismic Design of Steel Structures combines knowledge of seismic behavior of steel structures with the principles of earthquake engineering. This book focuses on seismic design, and concentrates specifically on seismic-resistant steel structures. Drawing o

Download or read book Probabilistic performance based seismic design written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2012-05-07 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last ten to fifteen years a vast amount of research has been undertaken to improve on earlier methods for analysing the seismic reliability of structures. These efforts focused on identifying aspects of prominent relevance and disregarding the inessential ones, with the goal of producing methods that are both more efficient and easier to use in practice. Today this goal can be said to be substantially achieved. During these years scientific activity covered all of the many aspects involved in such a multi-disciplinary problem, ranging from seismology, to geotechnics, to structural analysis and economy, all of them to be consistently organised into a probabilistic framework. As the output of this research was dispersed into a multitude of technical papers, fib Commission 7 thought it worthwhile to select the essential aspects of this large body of knowledge and to present them into a coherent and accessible document for structural engineers. To this end a task group of specialists was formed, whose qualifications come from their personal involvement in the above-mentioned developments throughout this period of time. From its inception the group decided that the bulletin should have had a distinct educational character and provide a clear overview of the methods available. The outcome is a compact volume that starts by introducing the concepts and definitions of performance-based engineering, continues with two chapters on assessment and design, respectively, presenting the methods in detail accompanied by illustrative examples, and concludes with an appendix with sample programming excerpts for their implementation. It is believed that at present fib Bulletin 68 represents a unique compendium on probabilistic performance-based seismic design.

Download or read book Seismic Performance of Concrete Buildings written by Liviu Crainic and published by CRC Press. This book was released on 2012-12-10 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines and presents essential aspects of the behavior, analysis, design and detailing of reinforced concrete buildings subjected to strong seismic activity. Seismic design is an extremely complex problem that has seen spectacular development in the last decades. The present volume tries to show how the principles and methods of earthquake engineering can be applied to seismic analysis and design of reinforced concrete buildings. The book starts with an up-to-date presentation of fundamental aspects of reinforced concrete behavior quantified through constitutive laws for monotonic and hysteretic loading. Basic concepts of post-elastic analysis like plastic hinge, plastic length, fiber models, and stable and unstable hysteretic behaviour are, accordingly, defined and commented upon. For a deeper understanding of seismic design philosophy and of static and dynamic post-elastic analysis, seismic behavior of different types of reinforced concrete structures (frames, walls) is examined in detail. Next, up-to-date methods for analysis and design are presented. The powerful concept of structural system is defined and systematically used to explain the response to seismic activity, as well as the procedures for analysis and detailing of common building structures. Several case studies are presented. The book is not code-oriented. The structural design codes are subject to constant reevaluation and updating. Rather than presenting code provisions, this book offers a coherent system of notions, concepts and methods, which facilitate understanding and application of any design code. The content of this book is based mainly on the authors’ personal experience which is a combination of their teaching and research activity as well as their work in the private sector as structural designers. The work will serve to help students and researchers, as well as structural designers to better understand the fundamental aspects of behavior and analysis of reinforced concrete structures and accordingly to gain knowledge that will ensure a sound design of buildings.

Download or read book Performance Based Seismic Design for Tall Buildings written by Ramin Golesorkhi and published by . This book was released on 2017-10-30 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance-Based Seismic Design (PBSD) is a structural design methodology that has become more common in urban centers around the world, particularly for the design of high-rise buildings. The primary benefit of PBSD is that it substantiates exceptions to prescribed code requirements, such as height limits applied to specific structural systems, and allows project teams to demonstrate higher performance levels for structures during a seismic event.However, the methodology also involves significantly more effort in the analysis and design stages, with verification of building performance required at multiple seismic demand levels using Nonlinear Response History Analysis (NRHA). The design process also requires substantial knowledge of overall building performance and analytical modeling, in order to proportion and detail structural systems to meet specific performance objectives.This CTBUH Technical Guide provides structural engineers, developers, and contractors with a general understanding of the PBSD process by presenting case studies that demonstrate the issues commonly encountered when using the methodology, along with their corresponding solutions. The guide also provides references to the latest industry guidelines, as applied in the western United States, with the goal of disseminating these methods to an international audience for the advancement and expansion of PBSD principles worldwide.

Download or read book Seismic Performance of Steel Moment frame Buildings with Deep Columns written by Narathip Sutchiewcharn and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Seismic Design Optimization and Earthquake Engineering Formulations and Applications written by Plevris, Vagelis and published by IGI Global. This book was released on 2012-05-31 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the past few years, there has been extensive research done on structural design in terms of optimization methods or problem formulation. But, much of this attention has been on the linear elastic structural behavior, under static loading condition. Such a focus has left researchers scratching their heads as it has led to vulnerable structural configurations. What researchers have left out of the equation is the element of seismic loading. It is essential for researchers to take this into account in order to develop earthquake resistant real-world structures. Structural Seismic Design Optimization and Earthquake Engineering: Formulations and Applications focuses on the research around earthquake engineering, in particular, the field of implementation of optimization algorithms in earthquake engineering problems. Topics discussed within this book include, but are not limited to, simulation issues for the accurate prediction of the seismic response of structures, design optimization procedures, soft computing applications, and other important advancements in seismic analysis and design where optimization algorithms can be implemented. Readers will discover that this book provides relevant theoretical frameworks in order to enhance their learning on earthquake engineering as it deals with the latest research findings and their practical implementations, as well as new formulations and solutions.

Download or read book Minimum Design Loads and Associated Criteria for Buildings and Other Structures written by American Society of Civil Engineers and published by ASCE Press. This book was released on 2022-02 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standard ASCE/SEI 7-22 provides requirements for general structural design and includes means for determining various loads and their combinations, which are suitable for inclusion in building codes and other documents.

Download or read book Performance Based Seismic Design of Structures written by Satyabrata Choudhury and published by CRC Press. This book was released on 2024-07-01 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic design of structures is fast turning to performance-based design (PBD) from old codal force-based design (FBD) method. The aim of the book is to expose readers to the meaning and need of PBD, the evolution of PBD to date, its various forms and applications. Various design philosophies and procedures have been described including modelling aspects and hazard considerations backed by examples. Direct displacement-based design (DDBD) and Unified PBD (UPBD) of reinforced concrete (RC) frame buildings, RC dual systems, steel frame buildings and bridge piers have also been explained. The main features of this book are as follows: • Illustrates performance-based seismic design to achieve the design target by performance objective-oriented design procedure. • Covers modern design philosophies, modelling aspects, concepts in nonlinearities and use of supplemental damping devices. • Contains a chapter on seismic safety of nonstructural components. • Describes UPBD design procedure and examples of different structural systems. • Includes application and examples with reference to SAP2000 software. This book is aimed at graduate students, researchers and professionals in civil engineering, earthquake engineering and structural design.