Seismic Analysis and Evaluation of a Building Retrofitted with New RC Walls PDF Download
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Author: Seda Mursel
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
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Book Description
This thesis presents a study on the seismic performance of a retrofitted concrete building in Mexico City. The original lateral force resisting system consisted of reinforced concrete (RC) columns supporting waffle slabs along with RC walls located in the elevator core. After having suffered damages during an earthquake in 2017, the building was retrofitted by adding new RC shear walls. The structural response of the retrofitted building was evaluated using nonlinear analytical models. The response and performance of the newly-added RC wall components were studied employing nonlinear truss models and strain-based acceptance criteria. The results of the wall evaluations were compared with those obtained using the ASCE/SEI 41-17 methodology, which involves backbone moment-rotation relations and rotation limits for the plastic hinges of flexure-dominated walls. The results of the truss models were used to adjust the calibration of hinge models for each of the wall components. A three-dimensional nonlinear model of the entire building was developed employing nonlinear frame elements with plastic hinges for the walls. Two different calibrations of the hinge models were considered: the ASCE/SEI 41-17 moment-rotation curves and the adjusted curves derived from nonlinear truss models. The performance of the retrofitted building was, thereafter, evaluated using nonlinear static analysis, and the results obtained with the two hinge calibrations were compared
Author: Seda Mursel
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
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Book Description
This thesis presents a study on the seismic performance of a retrofitted concrete building in Mexico City. The original lateral force resisting system consisted of reinforced concrete (RC) columns supporting waffle slabs along with RC walls located in the elevator core. After having suffered damages during an earthquake in 2017, the building was retrofitted by adding new RC shear walls. The structural response of the retrofitted building was evaluated using nonlinear analytical models. The response and performance of the newly-added RC wall components were studied employing nonlinear truss models and strain-based acceptance criteria. The results of the wall evaluations were compared with those obtained using the ASCE/SEI 41-17 methodology, which involves backbone moment-rotation relations and rotation limits for the plastic hinges of flexure-dominated walls. The results of the truss models were used to adjust the calibration of hinge models for each of the wall components. A three-dimensional nonlinear model of the entire building was developed employing nonlinear frame elements with plastic hinges for the walls. Two different calibrations of the hinge models were considered: the ASCE/SEI 41-17 moment-rotation curves and the adjusted curves derived from nonlinear truss models. The performance of the retrofitted building was, thereafter, evaluated using nonlinear static analysis, and the results obtained with the two hinge calibrations were compared
Author: fib Fédération internationale du béton
Publisher: fib Fédération internationale du béton
ISBN: 9782883940642
Category : Technology & Engineering
Languages : en
Pages : 322
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Book Description
In most parts of the developed world, the building stock and the civil infrastructure are ageing and in constant need of maintenance, repair and upgrading. Moreover, in the light of our current knowledge and of modern codes, the majority of buildings stock and other types of structures in many parts of the world are substandard and deficient. This is especially so in earthquake-prone regions, as, even there, seismic design of structures is relatively recent. In those regions the major part of the seismic threat to human life and property comes from old buildings. Due to the infrastructure's increasing decay, frequently combined with the need for structural upgrading to meet more stringent design requirements (especially against seismic loads), structural retrofitting is becoming more and more important and receives today considerable emphasis throughout the world. In response to this need, a major part of the fib Model Code 2005, currently under development, is being devoted to structural conservation and maintenance. More importantly, in recognition of the importance of the seismic threat arising from existing substandard buildings, the first standards for structural upgrading to be promoted by the international engineering community and by regulatory authorities alike are for seismic rehabilitation of buildings. This is the case, for example, of Part 3: Strengthening and Repair of Buildings of Eurocode 8 (i. e. of the draft European Standard for earthquake-resistant design), and which is the only one among the current (2003) set of 58 Eurocodes attempting to address the problem of structural upgrading. It is also the case of the recent (2001) ASCE draft standard on Seismic evaluation of existing buildings and of the 1996 Law for promotion of seismic strengthening of existing reinforced concrete structures in Japan. As noted in Chapter 1 of this Bulletin, fib - as CEB and FIP did before - has placed considerable emphasis on assessment and rehabilitation of existing structures. The present Bulletin is a culmination of this effort in the special but very important field of seismic assessment and rehabilitation. It has been elaborated over a period of 4 years by Task Group 7.1 Assessment and retrofit of existing structures of fib Commission 7 Seismic design, a truly international team of experts, representing the expertise and experience of all the important seismic regions of the world. In the course of its work the team had six plenary two-day meetings: in January 1999 in Pavia, Italy; in August 1999 in Raleigh, North Carolina; in February 2000 in Queenstown, New Zealand; in July 2000 in Patras, Greece; in March 2001 in Lausanne, Switzerland; and in August 2001 in Seattle, Washington. In October 2002 the final draft of the Bulletin was presented to public during the 1st fib Congress in Osaka. It was also there that it was approved by fib Commission 7 Seismic Design. The contents is structured into main chapters as follows: 1 Introduction - 2 Performance objectives and system considerations - 3 Review of seismic assessment procedures - 4 Strength and deformation capacity of non-seismically detailed components - 5 Seismic retrofitting techniques - 6 Probabilistic concepts and methods - 7 Case studies
Author: Tiago Miguel Ferreira
Publisher: MDPI
ISBN: 3039212575
Category : Technology & Engineering
Languages : en
Pages : 184
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Book Description
This book is a printed edition of the Special Issue Reducing the Seismic Vulnerability of Existing Buildings: Assessment and Retrofit that was published in Buildings
Author: Mohammad Yekrangnia
Publisher: Butterworth-Heinemann
ISBN: 0081025351
Category : Technology & Engineering
Languages : en
Pages : 486
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Book Description
Advanced Design Examples of Seismic Retrofit of Structures provides insights on the problems associated with the seismic retrofitting of existing structures. The authors present various international case studies of seismic retrofitting projects and the different possible strategies on how to handle complex problems encountered. Users will find tactics on a variety of problems that are commonly faced, including problems faced by engineers and authorities who have little or no experience in the practice of seismic retrofitting. Provides several examples of retrofitting projects that cover different structural systems, from non-engineered houses, to frame buildings Presents various retrofitting methods through examples Provides detailed, step-by-step design procedures for each example Includes real retrofit projects with photos of the details of various retrofitting techniques Contains several modeling details and hints making use of various software in this area
Author: Amarnath Chakrabarti
Publisher: Alpha Science International, Limited
ISBN:
Category : Science
Languages : en
Pages : 488
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Book Description
The Handbook on Seismic Retrofit of Buildings is a compiled source of technical information for engineers and professionals in the buildings industry, decision making officials and students. The Handbook is divided into 17 chapters, covering - basic concepts of earthquakes, seismic design and retrofit of buildings, seismic vulnerability assessment, retrofit strategies for different types of buildings, geotechnical and foundation aspects, advanced applications, quality assurance and case studies.
Author: Stelios Antoniou
Publisher: John Wiley & Sons
ISBN: 1119987342
Category : Technology & Engineering
Languages : en
Pages : 549
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Book Description
Seismic Retrofit of Existing Reinforced Concrete Buildings Understand the complexities and challenges of retrofitting building infrastructure Across the world, buildings are gradually becoming structurally unsound. Many were constructed before seismic load capacity was a mandatory component of building standards, and were often built with low-quality materials or using unsafe construction practices. Many more are simply aging, with materials degrading, and steel corroding. As a result, efforts are ongoing to retrofit existing structures, and to develop new techniques for assessing and enhancing seismic load capacity in order to create a safer building infrastructure worldwide. Seismic Retrofit of Existing Reinforced Concrete Buildings provides a thorough book-length discussion of these techniques and their applications. Balancing theory and practice, the book provides engineers with a broad base of knowledge from which to approach real-world seismic assessments and retrofitting projects. It incorporates knowledge and experience frequently omitted from the building design process for a fuller account of this critical engineering subfield. Seismic Retrofit of Existing Reinforced Concrete Buildings readers will also find: Detailed treatment of each available strengthening technique, complete with advantages and disadvantages In-depth guidelines to select a specific technique for a given building type and/or engineering scenario Step-by-step guidance through the assessment/retrofitting process Seismic Retrofit of Existing Reinforced Concrete Buildings is an ideal reference for civil and structural engineering professionals and advanced students, particularly those working in seismically active areas.
Author: Aníbal Costa
Publisher: Springer
ISBN: 981105858X
Category : Technology & Engineering
Languages : en
Pages : 339
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Book Description
This book presents the fundamentals of strengthening and retrofitting approaches, solutions and technologies for existing structures. It addresses in detail specific techniques for the strengthening of traditional constructions, reinforced concrete buildings, bridges and their foundations. Finally, it discusses issues related to standards and economic decision support tools for retrofitting.
Author: Alper Ilki
Publisher: Springer Science & Business Media
ISBN: 9048126819
Category : Technology & Engineering
Languages : en
Pages : 500
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Book Description
Many more people are coming to live in earthquake-prone areas, especially urban ones. Many such areas contain low-rise, low-cost housing, while little money is available to retrofit the buildings to avoid total collapse and thus potentially save lives. The lack of money, especially in developing countries, is exacerbated by difficulties with administration, implementation and public awareness. The future of modern earthquake engineering will come to be dominated by new kinds of measuring technologies, new materials developed especially for low-rise, low-cost buildings, simpler and thus lower cost options for retrofitting, cost cutting and raising public awareness. The book covers all the areas involved in this complex issue, from the prevention of total building collapse, through improvement techniques, to legal, financial, taxation and social issues. The contributors have all made valuable contributions in their own particular fields; all of them are or have been closely involved with the issues that can arise in seismic zones in any country. The recent research results published here offer invaluable pointers to practicing engineers and administrators, as well as other scientists whose work involves saving the lives and property of the many millions of people who live and work in hazardous buildings.
Author:
Publisher:
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 74
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Book Description
This renamed version of the former Uniform code for building conservation guidelines for retrofitting unreinforced masonry bearing wall buildings, reinforced concrete and reinforced masonry buildings, wood frame residential buildings, and concrete with masonry infill buildings.
Author: Antonio Formisano
Publisher: Frontiers Media SA
ISBN: 2889660117
Category : Technology & Engineering
Languages : en
Pages : 207
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Book Description
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
