DATABASING AND DAMAGE ANALYSIS OF CASTLES FOR SEISMIC RISK EVALUATION OF NINETY-ONE CASTLES

2021 ◽  
Vol 77 (4) ◽  
pp. I_609-I_616
Author(s):  
Masaho YOSHIDA ◽  
Arisa ICHIHASHI
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Damage Analysis

Seismic Risk Evaluation of Retrofitted Reinforced Concrete Buildings Utilizing Base Isolation and Considering Mainshock-Aftershock

2013 ◽  
Vol 671-674 ◽  
pp. 1372-1375
Author(s):  
Rui Long Han ◽  
Yue Li
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Base Isolation ◽  
Seismic Hazards ◽  
Nonlinear Finite Element ◽  
Structural Safety ◽  
Seismic Fragility ◽  
Rc Frame ◽  
Actual Situation ◽  
Element Analysis

The insufficient consideration of seismic risk caused hidden danger for structural safety in many areas. A promising retrofit method for these structures is base isolation. In order to evaluate the effectiveness of this approach, a hypothetical RC frame based on actual situation is designed to be retrofitted using base isolation. Then, seismic fragilities for both un-retrofitted and isolated frames are analyzed, utilizing the results obtained from nonlinear finite-element analysis. The ground motion of the analysis contains 22 earthquake motions, and the results of considering mainshock-aftershock and those of considering only mainshock are compared. The study proves the well designed base isolation can reduce the seismic fragility of the RC frame effectively, and the exclusive consideration of mainshock will underestimate the seismic hazards for structures.

scholarly journals Rapid and in-depth analysis for seismic risk evaluation

2017 ◽  
Vol 909 ◽  
pp. 012071
Author(s):  
Novi Dwi Astuti ◽  
Meli Anta Alvita ◽  
Senot Sangadji ◽  
AP Rahmadi ◽  
Edy Purwanto
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Depth Analysis

scholarly journals Vector-valued fragility functions for seismic risk evaluation

2012 ◽  
Vol 11 (2) ◽  
pp. 365-384 ◽  
Author(s):  
Pierre Gehl ◽  
Darius M. Seyedi ◽  
John Douglas
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Fragility Functions ◽  
Vector Valued

scholarly journals ATEX-HOF Methodology: Innovation Driven by Human and Organizational Factors (HOF) in Explosive Atmosphere Risk Assessment

Safety ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Jie Geng ◽  
Salvina Murè ◽  
Micaela Demichela ◽  
Gabriele Baldissone
Keyword(s):  
Risk Assessment ◽  
Source Identification ◽  
Risk Evaluation ◽  
Organizational Factors ◽  
Ignition Source ◽  
Assessment Procedure ◽  
Damage Analysis ◽  
Automotive Manufacturing ◽  
Area Classification ◽  
Human And Organizational Factors

ATEX (explosive atmosphere) risk assessment is required when any equipment or system could generate a potentially explosive atmosphere. Despite the fact that many operations on plants and equipment containing dangerous substances are performed by operators, influences of human and organizational factors (HOF) are mostly neglected in the ATEX risk assessment. The integrated methodology described here is proposed to address two challenges: (1) identification of the HOF influence on the ATEX risk assessment, and (2) quantification of the HOF influence. The proposed methodology enriches the traditional ATEX risk assessment procedure, which consists of four steps: (1) area classification, (2) ignition source identification, (3) damage analysis, and (4) ATEX risk evaluation. The advantages of the ATEX-HOF methodology are demonstrated through the application to a paint mixing station in an automotive manufacturing plant. The ATEX risk assessment methodologies are mainly semi-quantitative. The ATEX-HOF methodology provides a quantitative analysis for the area classification and ignition source identification, and a semi-quantitative approach for the damage analysis. As a result, the ATEX-HOF risk evaluation becomes more accurate. An event tree-based probabilistic assessment has been introduced, considering both the technical barrier failure (Prtbf) and the human intervention in terms of human error probability (HEP). The case study allowed for demonstrating how taking HOFs into account is particularly important in companies where the safety culture is lower and consequently, the usual hypothesis of the correctness of operator intervention (in maintenance, normal operations, and emergency) could bring to non-conservative results.

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