Period elongation-based framework for operative assessment of the variation of seismic vulnerability of reinforced concrete buildings during aftershock sequences

2016 ◽  
Vol 84 ◽  
pp. 224-237 ◽  
Author(s):  
Konstantinos Trevlopoulos ◽  
Philippe Guéguen
Keyword(s):  
Reinforced Concrete ◽  
Seismic Vulnerability ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
Aftershock Sequences ◽  
Period Elongation ◽  
Operative Assessment

Seismic vulnerability and retrofitting scheme for low-to-medium rise reinforced concrete buildings in Nepal

2019 ◽  
Vol 21 ◽  
pp. 186-199 ◽  
Author(s):  
Ashim Adhikari ◽  
K. Rama Mohan Rao ◽  
Dipendra Gautam ◽  
Hemchandra Chaulagain
Keyword(s):  
Reinforced Concrete ◽  
Seismic Vulnerability ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings

Evaluation of Seismic Vulnerability Indices for Low-Rise Reinforced Concrete Buildings Including Data from the 6 February 2016 Taiwan Earthquake

2020 ◽  
Vol 15 (1) ◽  
pp. 9-19
Author(s):  
Santiago Pujol ◽  
Lucas Laughery ◽  
Aishwarya Puranam ◽  
Pedram Hesam ◽  
Li-Hui Cheng ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Seismic Vulnerability ◽  
Vulnerability Index ◽  
Exact Form ◽  
Reinforced Concrete Buildings ◽  
Severe Damage ◽  
Concrete Buildings ◽  
Damage And Failure ◽  
Taiwan Earthquake

Communities need seismic vulnerability indices to identify which buildings are most susceptible to severe damage during earthquakes. To be of greatest value, these indices should be easy to use and should be vetted against data from previous earthquakes. To date, more than 800 reinforced concrete buildings have been surveyed after earthquakes for the purpose of evaluating a seismic vulnerability index proposed by Hassan and Sozen in 1997. This number includes 130 buildings surveyed after the 6 February 2016 earthquake in Taiwan. The data collected during these surveys consist of descriptions and photographs of damage, structural sketches, and measurements. Analyses of the data indicate that probability of severe damage and failure increases with decreasing column index and wall index (normalized measures of column and wall areas). They also suggest that the exact form of the threshold used to distinguish more vulnerable structures from less vulnerable structures is of little consequence in terms of the probable cost and benefits of the strengthening program this threshold may inform.

BASE ISOLATION IN SEISMIC RETROFITTING OF R/C BUILDINGS

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Alberto Dusi ◽  
Marco Mezzi ◽  
Tan Teng Or
Keyword(s):  
Reinforced Concrete ◽  
Seismic Vulnerability ◽  
Base Isolation ◽  
Human Life ◽  
Lessons Learned ◽  
Seismic Retrofitting ◽  
Reinforced Concrete Buildings ◽  
Building Vulnerability ◽  
Concrete Buildings ◽  
2009 L’Aquila Earthquake

The paper, based on the authors’ direct involvement in managing actual retrofitting design, reports on seismic vulnerability assessment, design and implementation issues related to the seismic retrofit of reinforced concrete buildings through base isolation. The retrofitting interventions design of damaged buildings involves three aspects: the damage survey, the assessment of the vulnerability of building in its original structural configuration, the design of intervention needed to reduce the building vulnerability up to a conventional level, normally indicated by the seismic standards. In the first part of the paper, the experience achieved in the retrofit of reinforced concrete buildings damaged by the Italian 2009 L’Aquila earthquake is presented by referring to a typical intervention designed by the authors. Topics related to conventional vs base isolation retrofitting strategies, structure’s performance, safeguard of human life, construction efficiency and repairing cost are analyzed with reference to actual case study. Lessons learned from the Italian experience have been critically applied to the design of retrofit intervention of a building, designed according to the current Nepal set of codes and under completion at the time of the earthquake, damaged by the Gorkha 2015 earthquake. In the second part of the paper activities carried out for the definition of a specific site seismic input, for the dynamic characterization of the building and for the design of the base isolation retrofit are presented.

Seismic Vulnerability Assessment of Reinforced Concrete Buildings Using Hierarchical Fuzzy Rule Base Modeling

2010 ◽  
Vol 26 (1) ◽  
pp. 235-256 ◽  
Author(s):  
Solomon Tesfamariam ◽  
Murat Saatcioglu
Keyword(s):  
Reinforced Concrete ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Fuzzy Rule ◽  
Rule Base ◽  
Building Performance ◽  
Reinforced Concrete Buildings ◽  
Building Vulnerability ◽  
Concrete Buildings ◽  
Fuzzy Rule Base

A reliable building vulnerability assessment is required for developing a risk-based assessment and retrofit prioritization. Tesfamariam and Saatcioglu (2008) proposed a simple building vulnerability module where the building performance modifiers are in congruence with FEMA 154. This paper is an extension of the building vulnerability assessment that include detailed performance modifier in congruence with FEMA 310 that is represented in a heuristic based hierarchical structure. Some of the input parameters are obtained through a walk down survey and are subject to vagueness uncertainty that is modelled through fuzzy set theory. A knowledge base fuzzy rule base modeling is developed and illustrated for reinforced concrete buildings damaged in the 1 May 2003 Bingöl, Turkey earthquake.

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