Issues in Urban Earthquake Risk


Book Description

Urban seismic risk is growing worldwide and is, increasingly, a problem of developing countries. In 1950, one in four of the people living in the world's fifty largest cities was earthquake-threatened, while in the year 2000, about one in two will be. Further, ofthose people living in earthquake-threatened cities in 1950, about two in three were located in developing countries, while in the year 2000, about nine in ten will be. Unless urban seismic safety is improved, particularly in developing countries, future earthquakes will have ever more disastrous social and economic consequences. In July 1992, an international meeting was organized with the purpose of examining one means ofimproving worldwide urban safety. Entitled "Uses ofEarthquake Damage Scenarios for Cities of the 21st Century," this meeting was held in conjunction with the Tenth World Conference ofEarthquake Engineering, in Madrid, Spain. An earthquake damage scenario (EDS) is adescription of the consequences to an urban area of a large, but expectable earthquake on the critical facilities of that area. In Californian and Japanese cities, EDSes have been used for several decades, mainly for the needs of emergency response officials. The Madrid meeting examined uses of this technique for other purposes and in other, less developed countries. As a result of this meeting, it appeared that EDSes bad significant potential to improve urban seismic safety worldwide.




Earthquake Hazard Impact and Urban Planning


Book Description

​The classical field dealing with earthquakes is called “earthquake engineering” and considered to be a branch of structural engineering. In projects dealing with strategies for earthquake risk mitigation, urban planning approaches are often neglected. Today interventions are needed on a city, rather than a building, scale. This work deals with the impact of earthquakes, including also a broader view on multihazards in urban areas. Uniquely among other works in the field, particular importance is given to urban planning issues, in conservation of heritage and emergency management. Multicriteria decision making and broad participation of those affected by disasters are included.







The Interplay between Urban Development, Vulnerability, and Risk Management


Book Description

Natural disasters are increasingly affecting the world, taking lives unexpectedly and leaving many others injured and homeless. Moreover, disasters disrupt local, national and even global economies, instantly changing the direction of development. In the first half of 2011 alone, 108 natural disasters occurred, killing over 23 thousand people, affecting nearly 44 million others and causing more than 253 billion US dollars of economic damages (CRED 2011,1). Large urban settlements have become increasingly vulnerable to the impacts of natural disasters. The concentration of substandard infrastructure and housing, material assets, and inherent socio-economic inequalities increase vulnerability to disasters in large urban areas, especially in developing countries. The size, number, functions, and geographical distribution of large- and megacities create a special concern for disaster risk. Good urban management practices can be a powerful catalyst for reducing losses from natural disasters, while simultaneously helping to develop a sustainable environment. Yet, the existing situation indicates that sustainable planning and risk management measures are not taken into consideration or may not be put into practice for a variety of financial, political, and social reasons. This book argues that, on one hand, socio-economic disparities resulting from unsustainable urban development can increase vulnerability to natural hazards, and on the other hand, when paired with natural hazards this increased vulnerability can negatively affect urban areas, resulting in further inequality. This book will showcase this argument with theoretical reviews and quantitative analyses on the interplay between sustainable development and disaster vulnerability as well as an in-depth case study of the role of urban planning and risk management practices in creating the socio-economic and spatial vulnerabilities and predicted earthquake risk in the megacity of Istanbul.




Urban Disaster Management


Book Description




Urban Disasters and Resilience in Asia


Book Description

Urban Disasters and Resilience in Asia presents the latest information on the intensity and frequency of disasters. Specifically, the fact that, in urban areas, more than 50% of the world's population is living on just 2% of the land surface, with most of these cities located in Asia and developing countries that have high vulnerability and intensification. The book offers an in-depth and multidisciplinary approach to reducing the impact of disasters by examining specific evidence from events in these areas that can be used to develop best practices and increase urban resilience worldwide. As urban resilience is largely a function of resilient and resourceful citizens, building cities which are more resilient internally and externally can lead to more productive economic returns. In an era of rapid urbanization and increasing disaster risks and vulnerabilities in Asian cities, Urban Disasters and Resilience in Asia is an invaluable tool for policy makers, researchers, and practitioners working in both public and private sectors. Explores a broad range of aspects of disaster and urban resiliency, including environmental, economic, architectural, and engineering factors Bridges the gap between urban resilience and rural areas and community building Provides evidence-based data that can lead to improved disaster resiliency in urban Asia Focuses on Asian cities, some of the most densely populated areas on the planet, where disasters are particularly devastating




Urban Disaster Mitigation: The Role of Engineering and Technology


Book Description

Great loss of human life, structural damage, and social and economic upheaval occur repeatedly due to such natural hazards as earthquakes, typhoons, hurricanes, landslides, floods and tsunamis. Both the US and Taiwan, along with many other countries, have a history of such occurrences and a common need to reduce their effects. This volume includes papers from the fourth symposium workshop, held jointly between the US and Taiwan to discuss research and its application to multiple hazard mitigation. The workshop, Urban Disaster Mitigation, The Role of Engineering and Technology, discussed lessons learned from recent natural disasters; assessed results of Taiwan's multiple hazards research program and potential application to the US; and proposed further studies on subjects of mutual concern. Topics include recent scientific findings obtained in various natural hazard areas and assessment of actual and potential damage from earthquakes, floods and landslides. Of particular importance are measures that can be taken to mitigate these hazards ranging from use of new algorithms for structural engineering to warning systems for a given region. At a time when natural disasters are widespread, engineers play a key role. Construction methods and building codes are changing; current knowledge shapes the direction of these changes. The research results presented in these proceedings will benefit both the academic and practicing communities around the world, strengthening the relationship between these two important parties.




Urban Earthquake Risk


Book Description




Advances in Earthquake Engineering for Urban Risk Reduction


Book Description

Earthquakes affecting urban areas can lead to catastrophic situations and hazard mitigation requires preparatory measures at all levels. Structural assessment is the diagnosis of the seismic health of buildings. Assessment is the prelude to decisions about rehabilitation or even demolition. The scale of the problem in dense urban settings brings about a need for macro seismic appraisal procedures because large numbers of existing buildings do not conform to the increased requirements of new earthquake codes and specifications or have other deficiencies. It is the vulnerable buildings - liable to cause damage and loss of life - that need immediate attention and urgent appraisal in order to decide if structural rehabilitation and upgrading are feasible. Current economic, efficient and occupant-friendly rehabilitation techniques vary widely and include the application either of precast concrete panels or layers, strips and patches of fiber reinforced polymers (FRP) in strategic locations. The papers in this book, many by renowned authorities in earthquake engineering, chart new and vital directions of research and application in the assessment and rehabilitation of buildings in seismic regions. While several papers discuss the probabilistic prediction and quantification of structural damage, others present approaches related with the in-situ and occupant friendly upgrading of buildings and propose both economical and practical techniques to address the problem.




Cities at Risk


Book Description

As levels of urbanization increase around the world, the growing concentrations of population and economic activity increases vulnerability to natural disasters. Interdependencies among urban populations mean that damage to the built environment, including water, sewer and energy infrastructure, can affect millions. Even if there is no change in the rate of occurrence of natural disasters (an unlikely prospect in the face of ongoing climate change) the potential for human and economic loss will continue to increase, along with the time required to recover. How do cities prepare for and recover from natural disasters? In this book, the authors provide a broad overview of the issues related to the impacts of disasters on cities around the world, from assessing risks to accounting for damages. The comparative approach across different types of disasters in a range of urban locations is useful in identifying opportunities for policy transfer. While there is no ’one size fits all’ solution to hazard mitigation, valuable lessons can be learned from the experiences of others. The chapters emphasize different modes for assessing hazard risk, as well as strategies for increasing the resiliency of vulnerable populations.