Seismic vulnerability and risk evaluation for old urban nuclei

Benedetti, D.; Benzoni, Gianmario; Parisi, Maria Adelaide Vittoria

doi:10.1002/eqe.4290160203

Cited by 105 publications

(47 citation statements)

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“…From a series of characteristics related to the typology and the structural design of each building, these models estimate the seismic susceptibility according to vulnerability classes, through descriptors or qualitative variables [12,13], or according to vulnerability indexes by means of a numerical valuation as a result of the quantification of the above-mentioned parameters. These methods include the Italian Method [14], the Japan Method [15], NZSEE and US Guidelines [16,17], the Vulnerability Index Method [18], or recent European Commission reports [19].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Buildings Seismic Vulnerability: A Methodological Proposal for Planning Ante-Earthquake Scenarios in Urban Areas

2018

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Featured Application: Geographic Information System (GIS) estimation of ante-earthquake scenarios through a more functional and standardized method of seismic vulnerability evaluation of reinforced concrete buildings in urban areas. Abstract:In spite of the enhancements related to building construction, many regions still present a major level of seismic risk as a consequence of the high vulnerability of the urban configuration of their cities. An improved method to assess the seismic vulnerability of buildings in urban areas is proposed in this contribution in order to advance the management of seismic emergency scenarios. The methodology, mainly based on the cadastral database, allows for a more standardized implementation as a function on the typological, structural, and urban parameters of the buildings, reducing the level of uncertainties linked to these methodologies and giving continuity to the different RISK-UE published works. The generalization of the method to any urban area has also been improved by means of removing the parameters whose calibration is associated with a specific area. The methodology has been put into practice in the urban area of the city of Lorca (SE Spain), in the aftermath of the earthquake of 11 May 2011, due to the availability of well-documented data reported from this seismic event. The proposal, when it is combined with Geographic Information System (GIS) techniques, provides valuable information for the planning and management of post-earthquake emergency situations.

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Section: Introductionmentioning

confidence: 99%

Estimation of the Buildings Seismic Vulnerability: A Methodological Proposal for Planning Ante-Earthquake Scenarios in Urban Areas

2018

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“…Furthermore there is a close relation between damage, v.i., environment impact and mechanic parameters. A semi-empirical method for vulnerability index assessment has been applied in Italy to collect data about buildings condition as well as for statistically supporting the seismic risk evaluation and comparison (BENEDETTI, 1988;PETRINI 1993). Vulnerability index assessment involves few empirical parameters.…”

Section: Vulnerability and Life-cycle Managementmentioning

confidence: 99%

Natural hazards vs. decision-making processes in buildings life cycle management

Basso

Garavaglia

Sgambi³

et al. 2014

Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures

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Considering latest natural disasters and the worrisome increase of demographic phenomenon, the critical worldwide condition has pointed out the need for a different approach to handle natural hazards (mainly earthquakes) over time. Thence environment, building heritage and human life and losses due to natural disasters (e.g. earthquake) are relevant topics. Over the time, every building changes its dynamic response to both environmental actions and use loads: building's reliability decreases, while its vulnerability to natural (or manmade) hazards increases. Thence, the whole building's condition has to be deeply investigated. Raising the awareness on traditional low-tech construction techniques and materials characteristics leads to gain a right balance between the wealth of knowledge built up in the past and the advances of recent years. Therefore a development in new performing materials may provide environmental and life-time efficiency. This study points out the dramatic need f... , Elsa Garavaglia ABSTRACTConsidering latest natural disasters and the worrisome increase of demographic phenomenon, the critical worldwide condition has pointed out the need for a different approach to handle natural hazards (mainly earthquakes) over time. Thence environment, building heritage and human life and losses due to natural disasters (e.g. earthquake) are relevant topics. Over the time, every building changes its dynamic response to both environmental actions and use loads: building's reliability decreases, while its vulnerability to natural (or man-made) hazards increases. Thence, the whole building's condition has to be deeply investigated. Raising the awareness on traditional low-tech construction techniques and materials characteristics leads to gain a right balance between the wealth of knowledge built up in the past and the advances of recent years. Therefore a development in new performing materials may provide environmental and life-time efficiency. This study points out the dramatic need for a review on existing structural design codes and regulations as well as on architects and engineers' duties in order to pinpoint lacks and prospects. Finally this paper suggests an approach that points out the life cycle management as the heart of intervention strategies on both existing and new buildings in order to ensure them a long life and deal with decision-making process.

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“…In the building field, the most widely used method is developed by the Gruppo Nazionale per la Difesa dai Terremoti of the Italian Consiglio Nazionale delle Ricerche (CNR-GNDT), it evaluates the seismic vulnerability of buildings, determined as a normalized vulnerability index. It has been proposed for the first time by Benedetti et al [9]. It has been generalized and several studies have been dedicated to the CNR-GNDT method, in some countries in South America, Europe and North Africa, such as Mansour et al [10], Vicente et al [11], Gent Franch et al [12] and Bezzazi et al [13].…”

Section: Introductionmentioning

confidence: 99%

Development and validation of predictive model to describe the growth of concrete water tank vulnerability with time

Aliche

Hammoum

Bouzelha

et al. 2016

Period. Polytech. Civil Eng.

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IntroductionThe Algerian heritage of drinking water storage tank has almost 40,000 tanks and is mostly built of reinforced concrete. The average age of the national heritage of concrete tanks is about forty years. The feedback from nearly half a century of management has highlighted a great disparity in the behaviour of these structures, expressed by several pathologies [1]. The lack of maintenance of these tanks, directly exposed to natural threats (snow, earthquakes, winds), accelerates the ageing process. In consideration to this, in recent years, civil engineering activity is repositioning primarily in the life cycle of existing structures operation rather than in the design and construction of new structures. Therefore, we note a great interest in the scientific community to risk analysis. Many methods have been developed by several authors intended to structure managers in order to assess the structural performance, to make risk analysis or programming maintenance actions for hydraulic structures, harbour structures and buildings. We mainly cite the reliability approach, the approach using physical models and expertise approach.The reliability approach based on probabilistic analysis has its limitations when the data is in insufficient quantity and in poor quality. Probability calculations become quickly complicated or impossible and their validity becomes difficult to demonstrate. We are then in the presence of the concept of imprecise probabilities. The interested reader by further details can consult the reference [2]. This latter provides an overview on developments which involve imprecise probabilities for the solution of engineering problems. Evidence theory, probability bounds analysis with p-boxes, and fuzzy probabilities are discussed with emphasis on their key features and on their relationships to one another. In the case where the structure is badly known and where the available data are of poor quality, the deterministic method using physical models; which consists of a recalculation of the structure; is difficult to implement. So, the simplest way to assess the future development of damages is to examine the evolution laws of existing structures of same design that have similar mechanisms, based on the experience feedback. This method is known as the expert approach that will be discussed in this paper.

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Seismic vulnerability and risk evaluation for old urban nuclei

Cited by 105 publications

References 0 publications

Estimation of the Buildings Seismic Vulnerability: A Methodological Proposal for Planning Ante-Earthquake Scenarios in Urban Areas

Estimation of the Buildings Seismic Vulnerability: A Methodological Proposal for Planning Ante-Earthquake Scenarios in Urban Areas

Natural hazards vs. decision-making processes in buildings life cycle management

Development and validation of predictive model to describe the growth of concrete water tank vulnerability with time

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