Evaluation of displacement-based vulnerability assessment methodology using observed damage data from Christchurch

2014 ◽  
Vol 43 (15) ◽  
pp. 2319-2339 ◽  
Author(s):  
S. R. Uma ◽  
Rajesh P. Dhakal ◽  
Mostafa Nayyerloo
Keyword(s):  
Vulnerability Assessment ◽  
Assessment Methodology ◽  
Damage Data ◽  
Displacement Based ◽  
Observed Damage

scholarly journals Comparison of Two Mechanics-Based Methods for Simplified Structural Analysis in Vulnerability Assessment

2008 ◽  
Vol 2008 ◽  
pp. 1-19 ◽  
Author(s):  
H. Crowley ◽  
B. Borzi ◽  
R. Pinho ◽  
M. Colombi ◽  
M. Onida
Keyword(s):  
Structural Analysis ◽  
Vulnerability Assessment ◽  
Ground Motions ◽  
Structural Models ◽  
Assessment Methods ◽  
Static Response ◽  
Nonlinear Analyses ◽  
Damage Data ◽  
Nonlinear Static ◽  
Observed Damage

Analytical vulnerability assessment methods should ideally be validated or verified by comparing their damage predictions with actual observed damage data. However, there are a number of difficulties related to the comparison of analytical damage predictions with observed damage; for example, there are large uncertainties related to the prediction of the ground motions to which the damaged buildings have been subjected. Until such problems can be resolved, it is worthwhile considering the mechanics of simplified analytical vulnerability assessment methods and validating this part of the methodology through comparisons with detailed structural models. This paper looks at two mechanics-based vulnerability assessment methods (DBELA and SP-BELA) and compares the nonlinear static response predicted with these methods with finite elements-based nonlinear analyses of prototype buildings. A comparison of the predicted response of urban populations of buildings using the two methods is then carried out, and the influence of these differences on vulnerability curves is studied.

scholarly journals Development and Application of Urban Landslide Vulnerability Assessment Methodology Reflecting Social and Economic Variables

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Yoonkyung Park ◽  
Ananta Man Singh Pradhan ◽  
Ungtae Kim ◽  
Yun-Tae Kim ◽  
Sangdan Kim
Keyword(s):  
Vulnerability Assessment ◽  
Regional Scale ◽  
Assessment Methodology ◽  
Physical Vulnerability ◽  
Suggested Approach ◽  
Socioeconomic Vulnerability ◽  
Source Areas ◽  
Concrete Frame ◽  
Secondary Damage ◽  
Landslide Event

An urban landslide vulnerability assessment methodology is proposed with major focus on considering urban social and economic aspects. The proposed methodology was developed based on the landslide susceptibility maps that Korean Forest Service utilizes to identify landslide source areas. Frist, debris flows are propagated to urban areas from such source areas by Flow-R (flow path assessment of gravitational hazards at a regional scale), and then urban vulnerability is assessed by two categories: physical and socioeconomic aspect. The physical vulnerability is related to buildings that can be impacted by a landslide event. This study considered two popular building structure types, reinforced-concrete frame and nonreinforced-concrete frame, to assess the physical vulnerability. The socioeconomic vulnerability is considered a function of the resistant levels of the vulnerable people, trigger factor of secondary damage, and preparedness level of the local government. An index-based model is developed to evaluate the life and indirect damage under landslide as well as the resilience ability against disasters. To illustrate the validity of the proposed methodology, physical and socioeconomic vulnerability levels are analyzed for Seoul, Korea, using the suggested approach. The general trend found in this study indicates that the higher population density areas under a weaker fiscal condition that are located at the downstream of mountainous areas are more vulnerable than the areas in opposite conditions.

Building Inspection and Damage Data for the 2002 Molise, Italy, Earthquake

2004 ◽  
Vol 20 (1_suppl) ◽  
pp. 167-190 ◽  
Author(s):  
Agostino Goretti ◽  
Giacomo Di Pasquale
Keyword(s):  
Damage Assessment ◽  
Building Damage ◽  
Masonry Buildings ◽  
Public Servants ◽  
Building Type ◽  
Damage Data ◽  
Observed Damage ◽  
Modal Values ◽  
Slight Damage

Shortly after the October 31, 2002, Molise, Italy, earthquake, a widespread fitness-for-service and building damage assessment was launched. In two months, more than 23,000 buildings were inspected using a standardized damage assessment form. As many as 100 inspection teams, consisting of public servants and volunteer professionals, totaled approximately 80,000 person-hours. Analysis of the collected building type and damage data shows high-vulnerability masonry buildings with significant preexisting damage. With the sole exception of San Giuliano, the modal values of the observed damage occurred for the negligible-to-slight damage levels D=0 or D=1, with only a few buildings showing higher damage levels. Nevertheless, due to their high vulnerability, about 40% of the inspected buildings were unusable, with important consequences for the number of people needing shelter. The survey made it possible to determine the usability of about 12,000 buildings and the repairs needed for about 1,000 buildings.

Database Enabled Rapid Seismic Vulnerability Assessment of Bridges

2021 ◽  
pp. 036119812110322
Author(s):  
Leslie Bonthron ◽  
Corey Beck ◽  
Alana Lund ◽  
Xin Zhang ◽  
Yenan Cao ◽  
...  
Keyword(s):  
Asset Management ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Dynamic Models ◽  
Rapid Assessment ◽  
Minimal Amount ◽  
Assessment Methodology ◽  
Seismic Vulnerability Assessment ◽  
Moderate Seismicity ◽  
Available Information

As the seismic hazard has been updated for the central U.S., state Departments of Transportation (DOTs) find an increasing need to assess the seismic vulnerability of their bridge network. Traditional methods to perform seismic assessment require developing dynamic models for each bridge. However, this approach requires specialized engineering knowledge and information from structural drawings, and is time-consuming. To streamline this important task, a simplified dynamic modeling procedure is described that leverages readily available information from DOTs’ asset management databases. With a minimal amount of additional data items, the asset management database can be used to identify vulnerable bridges rapidly and with sufficient accuracy for the prioritization of retrofit decisions. A detailed analysis of a 100-bridge sample set identified typical vulnerabilities and established corresponding capacity thresholds. The rapid seismic vulnerability assessment methodology is implemented as an Excel macro-enabled tool for bridge owners and asset managers to rapidly assess the vulnerability of each individual bridge based on current information in the database, and then classify the vulnerability of each individual bridge as low, medium, or high. Current DOT databases used for asset management in regions of low-to-moderate seismicity do require some data items be added for a robust assessment. These data items are identified here and leveraged to demonstrate the method. The rapid assessment methodology presented can be implemented to effectively identify the most vulnerable bridges in a bridge network, thus facilitating a rapid state bridge inventory network assessment to prioritize and inform actions such as maintenance and rehabilitation.

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