Empirical vulnerability curves for Italian mansory buildings: evolution of vulnerability model from the DPM to curves as a function of accelertion

Abstract In the framework of the emergency management in the case of seismic events, the evaluation of the expected damage represents a basic requirement for risk informed planning. Seismic risk is defined by the probability to reach a level of damage on given exposed elements caused by seismic events occurring in a fixed period and in a fixed area. To this purpose, the expected seismic input, the exposed elements and their vulnerability have to be correctly evaluated. The aim of the research is to define a correct model of vulnerability curves, in PGA, for masonry structures in Italy, by heuristic approach starting from damage probability matrices (DPMs). To this purpose, the PLINIVS database, containing data on major Italian seismic events, has been used and supported by “critical” assumption on missing data. To support the reliability of this assumption, two vulnerability models, considering or not the hypothesis on the missing data, have been estimated and used to calculate the seismic scenario of the L’Aquila 2009 earthquake through the IRMA (Italian Risk MAp) platform. Finally, a comparison between the outcomes elaborated by IRMA platform and the observed damage collected in the AEDES forms, has been done.

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Seismic vulnerability of vernacular Newari buildings in Nepal: observations and analysis of damage due to 1934, 1988, 2011, and 2015 earthquakes

10.5194/nhess-2017-435 ◽

2018 ◽

Author(s):

Dipendra Gautam ◽

Hugo Rodrigues

Keyword(s):

Seismic Vulnerability ◽

Masonry Buildings ◽

Fragility Functions ◽

Masonry Structures ◽

Collapse Prevention ◽

Damage Probability Matrices ◽

Damage Probability ◽

Probability Matrices

Abstract. This paper reports the seismic vulnerability of vernacular Newari buildings based on the damage observations during four major earthquakes (1934, 1988, 2011 and 2015) that struck Bhaktapur city. Some specific features that contributed to collapse prevention in traditional masonry buildings are also highlighted in this paper. In this paper, we have outlined the insights of each earthquake using forensic interpretations and the recommendations by various researchers after 1934 and 1988 earthquakes are compared in terms of their implementation. With the help of damage database recorded during 1934, 1988 and 2015 earthquakes, we have created damage probability matrices and empirical fragility functions for traditional masonry structures. The fragility functions and damage probability matrices derived in this study highlight that most of the vernacular Newari buildings are likely to be collapsed in the case of strong to major earthquakes.

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Influence of seismic input characterisation on empirical damage probability matrices for the 2009 L'Aquila event

Soil Dynamics and Earthquake Engineering ◽

10.1016/j.soildyn.2019.105870 ◽

2020 ◽

Vol 128 ◽

pp. 105870 ◽

Cited By ~ 3

Author(s):

Annalisa Rosti ◽

Maria Rota ◽

Andrea Penna

Keyword(s):

Seismic Input ◽

Damage Probability Matrices ◽

Damage Probability ◽

Probability Matrices

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Microzonation of seismic risk in a low-rise Latin American city based on the macroseismic evaluation of the vulnerability of residential buildings: Colima city, México

Natural Hazards and Earth System Science ◽

10.5194/nhess-10-1347-2010 ◽

2010 ◽

Vol 10 (6) ◽

pp. 1347-1358 ◽

Cited By ~ 3

Author(s):

V. M. Zobin ◽

A. A. Cruz-Bravo ◽

F. Ventura-Ramírez

Keyword(s):

Latin American ◽

Seismic Risk ◽

Residential Buildings ◽

Earthquake Intensity ◽

Damage Probability Matrices ◽

Urban Buildings ◽

Damage Probability ◽

Significant Damage ◽

Damage Probability Matrix ◽

Probability Matrices

Abstract. A macroseismic methodology of seismic risk microzonation in a low-rise city based on the vulnerability of residential buildings is proposed and applied to Colima city, Mexico. The seismic risk microzonation for Colima consists of two elements: the mapping of residential blocks according to their vulnerability level and the calculation of an expert-opinion based damage probability matrix (DPM) for a given level of earthquake intensity and a given type of residential block. A specified exposure time to the seismic risk for this zonation is equal to the interval between two destructive earthquakes. The damage probability matrices were calculated for three types of urban buildings and five types of residential blocks in Colima. It was shown that only 9% of 1409 residential blocks are able to resist to the Modify Mercalli (MM) intensity VII and VIII earthquakes without significant damage. The proposed DPM-2007 is in good accordance with the experimental damage curves based on the macroseismic evaluation of 3332 residential buildings in Colima that was carried out after the 21 January 2003 intensity MM VII earthquake. This methodology and the calculated PDM-2007 curves may be applied also to seismic risk microzonation for many low-rise cities in Latin America, Asia, and Africa.

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