Impact Of Long Period Ground Motions On Structural Design A Case Study For Bucharest Romania
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Impact of Long-Period Ground Motions on Structural Design: A Case Study for Bucharest, Romania by Florin Pavel,Viorel Popa,Radu Vacareanu Pdf
This book discusses the impact of long-period ground motions on structural design using the situation in Bucharest, the capital city of Romania, as a case study. The first part explores the seismic hazard situation in Bucharest, and the causes of long-period ground motions related to both the source and the site. Subsequently, it examines the current seismic design, detailing building practices in Bucharest, and discusses the impact of long-period ground motions on seismic design. Lastly, several case study buildings in Bucharest are presented and the major difficulties encountered in their design are considered. The book also includes various numerical examples that help readers understand the impact of long-period ground motions on various structural systems, that are currently used in Bucharest. This book is intended for researchers in the field of seismic hazard and risk assessment and designers of multi-story buildings in seismic areas.
Seismic Behaviour and Design of Irregular and Complex Civil Structures IV by Rita Bento,Mario De Stefano,Dietlinde Köber,Zbigniew Zembaty Pdf
This volume contains papers of the 9th European Workshop on the Seismic Behaviour of Irregular and Complex Structures (9EWICS) held in Lisbon, Portugal, in 2020. This workshop, organized at Instituto Superior Técnico, University of Lisbon, continued the successful three-annual series of workshops started back in 1996. Its organization had the sponsorship of Working Group 8 (Seismic Behaviour of Irregular and Complex Structures) of the European Association of Earthquake Engineering.This international event provided a platform for discussion and exchange of ideas and unveiled new insights on the possibilities and challenges of irregular and complex structures under seismic actions. The topics addressed include criteria for regularity, seismic design of irregular structures, seismic assessment of irregular and complex structures, retrofit of irregular and complex structures, and soil-structure interaction for irregular and complex structures. Beyond an excellent number of interesting papers on these topics, this volume includes the papers of the two invited lectures – one devoted to irregularities in RC buildings, including perspectives in current seismic design codes, difficulties in their application and further research needs, and another one dedicated to the challenging and very up to date topic in the area of seismic response of masonry building aggregates in historical centers. This volume includes 26 contributions from authors of 11 countries, giving a complete and international view of the problem.The holds particular interest for all the community involved in the challenging task of seismic design, assessment and/or retrofit of irregular and complex structures.
Urban Habitat Constructions Under Catastrophic Events by Federico M. Mazzolani Pdf
COST is an intergovernmental framework for European Cooperation in Science and Technology, allowing the coordination of nationally-funded research on a European level. Part of COST was COST Action C26Urban Habitat Constructions Under Catastrophic Events which started in 2006 and held its final conference in Naples, Italy, on 16-18 September 201
The 1940 Vrancea Earthquake. Issues, Insights and Lessons Learnt by Radu Vacareanu,Constantin Ionescu Pdf
These proceedings include most of the available information on this major seismic event and its consequences. With an estimated moment magnitude of 7.7 and a heavy toll in terms of human and economic losses, it ranks as the largest intermediate-depth earthquake in Europe in the twentieth century. Nevertheless, because of the difficult conditions in the 1940s, the lessons learnt after the Vrancea earthquake were not extensively shared with the international scientific community and thus, this book fills a gap in the literature discussing the knowledge acquired after major disasters. Past experience together with current understanding of the 1940 Vrancea earthquake are presented along with the latest information on Romanian seismicity, seismic hazard and risk assessment, and seismic evaluation and rehabilitation of buildings and structures. Moreover, it includes excerpts from Romanian post-disaster reports and textbooks concerning the earthquake.
Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions by Francesco Silvestri,Nicola Moraci Pdf
Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions contains invited, keynote and theme lectures and regular papers presented at the 7th International Conference on Earthquake Geotechnical Engineering (Rome, Italy, 17-20 June 2019. The contributions deal with recent developments and advancements as well as case histories, field monitoring, experimental characterization, physical and analytical modelling, and applications related to the variety of environmental phenomena induced by earthquakes in soils and their effects on engineered systems interacting with them. The book is divided in the sections below: Invited papers Keynote papers Theme lectures Special Session on Large Scale Testing Special Session on Liquefact Projects Special Session on Lessons learned from recent earthquakes Special Session on the Central Italy earthquake Regular papers Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions provides a significant up-to-date collection of recent experiences and developments, and aims at engineers, geologists and seismologists, consultants, public and private contractors, local national and international authorities, and to all those involved in research and practice related to Earthquake Geotechnical Engineering.
New Challenges for Seismic Risk Mitigation in Urban Areas by Simone Barani,Aybige Akinci,Karin Sesetyan,Dario Albarello,Philippe Gueguen,Stefano Parolai,Roberto Paolucci,Dimitris Pitilakis Pdf
Assessment of structural performance of retrofit measures on characteristic "interwar" structures in Bucharest, Romania by Maria Bostenaru Dan Pdf
This study is dedicated to the preservation of the heritage of the Modern Movement, particularly through improving the structural response to seismic solicitations, which are common in some of the areas where significant works in this style can be found, including Bucharest, Romania. The focus is on developing and validating methodology according to which the vulnerability of "interwar" buildings, which is the other name given to the blocks of flats which witnessing the Modern Movement in the Romanian capital. To complement this study with a geographical generalisation, the models proposed have been also tested for selected earthquakes, taking into account that the Modern Movement left its traces in form of that very characteristic blocks of flats there as well. Residences in form of blocks of flats of the Modern Movement have been built in Bucharest in the 1930s. They present a reinforced concrete frame structure, which infill walls of masonry bricks, although the later could only be limitedly taken into account in this study. However, the method used remains perfectly valid. To determine the impacts of strong ground motion on a certain type of buildings, several approaches have been applied: - the static pushover curve analysis - displacement based dynamic time-history analysis - stress-strain approach based on the dynamic time-history analysis These simulation types have been applied first to simple models, reproducing what in an experimentallaboratory might be tested, then to models of progressivelly more complicated buildings, from regular frame structures, to real building models, which all the irregularities usual in the building practice in that time. The methodology adopted included use of several computer support tools, beginning with software for converting accelerograms, fibre based finite elements, spread shet and database programs. A further step in testing the general validity has been the use of the same methodology for simplified models of real buildings which have been found to be of the same typology as the models studied more extenisivelly. This examination has shown that the methodology proposed is perfectly valid for them. The integration within the general frame of assessment of structural performance has been made comparing the computed damages with real damage types. For this purpose a matrix of damages suffered by "interwar" buildings, previously developed by the author, has been used. It proved again, that the predictions for the buildings with the same geometrical characteristics as those which have been object of this study were close to the reality. The innovative part of this study relies in the stress-strain based approach applied to building models of this size. Such an analysis allows not only description of failure mode and determination of limit states eventually reached by the building, but also the specific determination of the number and, if necessary, position of structural members suffering different types of damage. This kind of output can build the input for other interdisciplinary studies. Of interest for the author is the economic study regarding the retrofit/repair needs of damaged elements as opposed to preventive retrofit. In this sense, an issue for further research, which has been only marginally handled within this work is the retrofit of previously damaged structures, an issue, which perfectly suits into the methodology already proposed and validated.
STESSA 2003 - Behaviour of Steel Structures in Seismic Areas by Federico Mazzolani Pdf
Presenting a comprehensive overview of recent developments in the field of seismic resistant steel structures, this volume reports upon the latest progress in theoretical and experimental research into the area, and groups findings in the following key sections: · performance-based design of structures · structural integrity under exceptional loading · material and member behaviour · connections · global behaviour · moment resisting frames · passive and active control · strengthening and repairing · codification · design and application
Earthquakes and Sustainable Infrastructure by Giuliano Panza,Vladimir G. Kossobokov,Efraim Laor,Benedetto DeVivo Pdf
Earthquakes and Sustainable Infrastructure: Neodeterministic (NDSHA) Approach Guarantees Prevention Rather Than Cure communicates in one comprehensive volume the state-of-the-art scientific knowledge on earthquakes and related risks. Earthquakes occur in a seemingly random way and, in some cases, it is possible to trace seismicity back to the concept of deterministic chaos. Therefore, seismicity can be explained by a deterministic mechanism that arises as a result of various convection movements in the Earth’s mantle, expressed in the modern movement of lithospheric plates fueled by tidal forces. Consequently, to move from a perspective focused on the response to emergencies to a new perspective based on prevention and sustainability, it is necessary to follow this neodeterministic approach (NDSHA) to guarantee prevention, saving lives and infrastructure. This book describes in a complete and consistent way an effective explanation to complex structures, systems, and components, and prescribes solutions to practical challenges. It reflects the scientific novelty and promises a feasible, workable, theoretical and applicative attitude. Earthquakes and Sustainable Infrastructure serves a “commentary role” for developers and designers of critical infrastructure and unique installations. Commentary-like roles follow standard, where there is no standard. Mega-installations embody/potentiate risks; nonetheless, lack a comprehensive classic standard. Every compound is unique, one of its kind, and differs from others even of similar function. There is no justification to elaborate a common standard for unique entities. On the other hand, these specific installations, for example, NPPs, Naval Ports, Suez Canal, HazMat production sites, and nuclear waste deposits, impose security and safety challenges to people and the environment. The book offers a benchmark for entrepreneurs, designers, constructors, and operators on how to compile diverse relevant information on site-effects and integrate it into the best-educated guess to keep safe and secure, people and environment. The authors are eager to convey the entire information and explanations to our readers, without missing either accurate information or explanations. That is achieved by “miniaturization,” as much is possible, not minimization. So far, the neodeterministic method has been successfully applied in numerous metropolitan areas and regions such as Delhi (India), Beijing (China), Naples (Italy), Algiers (Algeria), Cairo (Egypt), Santiago de Cuba (Cuba), Thessaloniki (Greece), South-East Asia (2004), Tohoku, Japan (2011), Albania (2019), Bangladesh, Iran, Sumatra, Ecuador, and elsewhere. Earthquakes and Sustainable Infrastructure includes case studies from these areas, as well as suggested applications to other seismically active areas around the globe. NDSHA approaches confirm/validate that science is looming to warn. Concurrently, leaders and practitioners have to learn to use rectified science in favor of peoples' safety. State-of-the-art science does have the know-how to reduce casualties and structural damage from potential catastrophes to a bearable incident. The only book to cover earthquake prediction and preparation from a neo-deterministic (NDSHA) approach Includes case studies from metropolitan areas where the neo-deterministic method has been successfully applied Editors and authors include top experts in academia, disaster prevention, and preparedness management
Seismic Hazard and Risk Assessment by Radu Vacareanu,Constantin Ionescu Pdf
This book contains the best contributions presented during the 6th National Conference on Earthquake Engineering and the 2nd National Conference on Earthquake Engineering and Seismology - 6CNIS & 2CNISS, that took place on June 14-17, 2017 in Bucharest - Romania, at the Romanian Academy and Technical University of Civil Engineering of Bucharest. The book offers an updated overview of seismic hazard and risk assessment activities, with an emphasis on recent developments in Romania, a very challenging case study because of its peculiar intermediate-depth seismicity and evolutive code-compliant building stock. Moreover, the book collects input of renowned scientists and professionals from Germany, Greece, Italy, Japan, Netherlands, Portugal, Romania, Spain, Turkey and United Kingdom.The content of the book focuses on seismicity of Romania, geotechnical earthquake engineering, structural analysis and seismic design regulations, innovative solutions for seismic protection of building structures, seismic risk evaluation, resilience-based assessment of structures and management of emergency situations. The sub-chapters consist of the best papers of 6CNIS & 2CNISS selected by the International Advisory and Scientific Committees. The book is targeted at researchers and experts in seismic hazard and risk, evaluation and rehabilitation of buildings and structures, insurers and re-insurers, and decision makers in the field of emergency situations and recovery activities.
Although the disciplines of architecture and structural engineering have both experienced their own historical development, their interaction has resulted in many fascinating and delightful structures. To take this interaction to a higher level, there is a need to stimulate the inventive and creative design of architectural structures and to persuade architects and structural engineers to further collaborate in this process, exploiting together new concepts, applications and challenges. This set of book of abstracts and full paper searchable CD-ROM presents selected papers presented at the 3rd International Conference on Structures and Architecture Conference (ICSA2016), organized by the School of Architecture of the University of Minho, Guimarães, Portugal (July 2016), to promote the synergy in the collaboration between the disciplines of architecture and structural engineering.