Seismic risk assessment considering cumulative damage due to aftershocks

2016 ◽  
Vol 46 (3) ◽  
pp. 369-389 ◽  
Author(s):  
Fatemeh Jalayer ◽  
Hossein Ebrahimian
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Cumulative Damage ◽  
Seismic Risk Assessment

Spatial Cross-Correlation Models for Absolute and Relative Spectral Input Energy Parameters Based on Geostatistical Tools

2020 ◽  
Vol 110 (6) ◽  
pp. 2728-2742
Author(s):  
Yin Cheng ◽  
Chao-Lie Ning ◽  
Wenqi Du
Keyword(s):  
Risk Assessment ◽  
Seismic Design ◽  
Seismic Risk ◽  
Cross Correlation ◽  
Cumulative Damage ◽  
Input Energy ◽  
Seismic Risk Assessment ◽  
Linear Model Of Coregionalization ◽  
Energy Parameters ◽  
Correlation Models

ABSTRACT In recent years, energy-based seismic design methodology has received increasing attention because it takes into account not only the force and displacement behavior of a structure but also the cumulative damage effect caused by seismic loading. Specifically, as a fundamental parameter, input energy parameters (both absolute and relative measures) are directly related to the cumulative damage potential; therefore, they are commonly used in energy-based seismic design and seismic risk assessment. This study thus proposes new spatial cross-correlation models for absolute and relative elastic input energy parameters, using 2219 ground-motion records selected from 12 earthquake events. The normalized within-event residuals for both absolute and relative measures are first calculated. Semivariogram analysis is then conducted to quantify the spatial correlation of residuals for the input energy parameters at multiple sites and multiple periods. The linear model of coregionalization (LMC) approach is adopted to fit the empirical data; it is observed that the proposed LMC-based function performs reasonably well in capturing the spatial variability of the input energy measures. The influence of regional site conditions on the spatial cross correlation of input energy parameters is also investigated, and generic models are proposed using the averaged standardized coregionalization matrices of 12 events. The spatial cross-correlation models developed for input energy parameters can be used in regional seismic risk assessment within an energy-based framework.

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).

SEISMIC RISK ASSESSMENT AND MITIGATION FOR THE EXISTING LIFELINE

2011 ◽  
Vol 05 (01) ◽  
pp. 31-45 ◽  
Author(s):  
T. IMAI ◽  
S. WADA ◽  
T. KOIKE
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Water Distribution ◽  
Water Distribution Network ◽  
Assessment Method ◽  
Disaster Mitigation ◽  
Seismic Retrofitting ◽  
Network System ◽  
Investment Strategies ◽  
Seismic Risk Assessment

In order to keep the existing lifeline network system at a favorable seismic performance level, it is necessary to carry out retrofitting activities. This study proposes a seismic risk assessment method for the existing deteriorated lifeline network system based on the probability of system performance failure. Numerical simulations are carried out for the existing water distribution network system for several seismic investment strategies to support the decision making of seismic disaster mitigation planning. Effective planning of seismic retrofitting activities and disaster mitigation for the existing lifeline system can be realized using the newly developed assessment method.

Towards Near-Real-Time Damage Estimation Using a CSM-Based Tool for Seismic Risk Assessment

2008 ◽  
Vol 12 (sup2) ◽  
pp. 199-210 ◽  
Author(s):  
Dominik H. Lang ◽  
Sergio Molina-Palacios ◽  
Conrad D. Lindholm
Keyword(s):  
Risk Assessment ◽  
Real Time ◽  
Seismic Risk ◽  
Damage Estimation ◽  
Seismic Risk Assessment

Development of a preliminary seismic risk screening tool for existing buildings in Canada

2018 ◽  
Vol 45 (9) ◽  
pp. 717-727 ◽  
Author(s):  
Reza Fathi-Fazl ◽  
Eric Jacques ◽  
Zhen Cai ◽  
Bessam Kadhom ◽  
Bassem Saassouh ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Seismic Performance ◽  
Seismic Design ◽  
Seismic Risk ◽  
Screening Tool ◽  
Existing Buildings ◽  
Seismic Risk Assessment ◽  
Risk Screening ◽  
Categorization System ◽  
Remaining Time

This paper presents a preliminary seismic risk screening tool to identify buildings whose superior structural and non-structural seismic performance in regions of low seismicity can be assessed based on several key attributes. The tool is designed to exempt buildings from detailed seismic risk assessment if key exemption criteria are met. The exemption criteria are based on: a seismic categorization system linked to anticipated building damage and seismicity; whether or not the building was designed using modern seismic design provisions; and the remaining time that the building will be occupied. The tool also provides a second list of criteria, which if satisfied, will automatically trigger further detailed seismic risk assessment. The decisions rendered by the tool regarding the expected seismic performance of a building are evaluated against the next level of seismic risk screening tool to ensure the consistency. A flowchart is presented to facilitate adoption of the tool by practicing engineers and other end-users.

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