A Screening Procedure for Seismic Risk Assessment in Urban Building Stocks

2007 ◽  
Vol 23 (2) ◽  
pp. 441-458 ◽  
Author(s):  
Haluk Sucuoğlu ◽  
Ufuk Yazgan ◽  
Ahmet Yakut
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Risk Mitigation ◽  
Screening Procedure ◽  
Risk Level ◽  
Final Decision ◽  
Assessment Procedure ◽  
Performance Score ◽  
Seismic Risk Assessment ◽  
Significant Damage

An effective step for seismic risk mitigation in large urban areas under high seismic risk is to identify the most vulnerable buildings that may sustain significant damage during a future earthquake. Once they are identified properly, existing seismic risks may be reduced either by retrofitting such buildings, or by replacing them with new buildings in view of a particular risk-mitigation planning strategy. A fast and simple seismic risk-assessment procedure for vulnerable urban building stocks is proposed in this study. It is basically a sidewalk survey procedure based on observing selected building parameters from the street side, and calculating a performance score for determining the risk priorities for buildings. Statistical correlations have been obtained for measuring the sensitivity of damage to the assigned performance score by employing a database consisting of 454 damaged buildings surveyed after the 1999 Düzce earthquake in Turkey. The results revealed that the proposed screening procedure provides a simple but effective tool for selecting those buildings that have significant damage risk. These buildings have to be subjected to a more detailed assessment for a final decision on their seismic risk level.

Seismic Risk Assessment of Masonry Buildings in Istanbul for Effective Risk Mitigation

2010 ◽  
Vol 26 (4) ◽  
pp. 967-982 ◽  
Author(s):  
M. Altug Erberik
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Economic Losses ◽  
Assessment Procedure ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Seismic Risk Assessment ◽  
Priority List ◽  
Earthquake Losses ◽  
Short Period

Unreinforced and non-engineered masonry buildings are highly vulnerable to seismic hazard and constitute a significant percentage of earthquake losses, including both casualties and economic losses. This study presents an engineering application on seismic safety assessment of unreinforced masonry (URM) buildings in Istanbul, Turkey, a metropolitan city under very high seismic risk. Nearly 20,000 masonry buildings were examined through a two-stage assessment procedure in order to identify the addresses of those buildings which are under high seismic risk. Furthermore, the obtained database can be employed in the preparation of an earthquake mitigation strategy for the expected major earthquake in Istanbul. In the first-stage evaluation, buildings are examined visually from the street by considering their basic structural parameters and they are ranked within a priority list in terms of the calculated seismic risk. Next, the buildings identified with higher risk are evaluated in the second stage by using a more detailed procedure. The developed procedure is both an optimal and a practical tool in the seismic risk assessment of large masonry building stocks in a short period of time with limited resources.

Potential of Building Information Modelling for seismic risk mitigation in buildings

2014 ◽  
Vol 47 (4) ◽  
pp. 253-263 ◽  
Author(s):  
David P. Welch ◽  
Timothy J. Sullivan ◽  
Andre Filiatrault
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Risk Mitigation ◽  
Effective Means ◽  
Negative Consequences ◽  
Discussion Paper ◽  
Seismic Risk Assessment ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Building Information

The seismic assessment of an existing building is often required, possibly due to a change in use, changes in legislation (as recently occurred in New Zealand), for insurance purposes or to permit continued occupancy following a major earthquake. This discussion paper explores three ways in which Building Information Modelling (BIM) could assist in the assessment and mitigation of seismic risk: (i) BIM could provide valuable data on characteristics of both structural and non-structural elements within a building to permit a reliable and holistic seismic risk assessment to be undertaken; (ii) administer a self-diagnosis process utilising damage information received from structural health monitoring technologies prior to and following an earthquake, thus reducing the need for potentially dangerous and time-consuming physical post-earthquake inspections; and (iii) enabling realisation of an emergency management hub within a building management system for implementing control processes to monitor and eventually shutdown damaged mechanical services (e.g. gas pipes) following an earthquake, thus limiting the negative consequences of earthquake induced damage. By providing a leading-edge discussion of these three subjects, with reference to building damage observed in previous earthquakes, important directions for research in BIM are identified that promise to provide a more effective means of seismic risk assessment and mitigation.

SEISMIC RISK ASSESSMENT AND REDUCTION IN ITALY

2019 ◽  
Vol 1 (Special Issue on First SACEE'19) ◽  
pp. 55-75
Author(s):  
Fabio Sabetta
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Safety Assessment ◽  
Public Funding ◽  
Tax Incentives ◽  
Technical Training ◽  
Disaster Prevention ◽  
Existing Buildings ◽  
Seismic Risk Assessment ◽  
Post Disaster

In this paper, the main features of the policies adopted in Italy for seismic risk reduction are discussed. Particular attention is given to the Pre-disaster prevention activities such as the implementation of the building code, the seismic risk assessment for a priority scale of intervention, tax incentives and public funding for the vulnerability reduction of the existing buildings, information to population and school education, technical training of experts. The phases of response and post-disaster activities, including emergency management, search and rescue, loss scenarios, and safety assessment of buildings, are also discussed taking example from the most recent devastating earthquakes in Italy (L.Aquila 2009, Amatrice 2016).

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