Analytical Seismic Fragility Functions for Dual RC Structures in Bucharest

2016 ◽  
pp. 463-479 ◽  
Author(s):  
Paul Olteanu ◽  
Veronica Coliba ◽  
Radu Vacareanu ◽  
Florin Pavel ◽  
Daniel Ciuiu
Keyword(s):  
Seismic Fragility ◽  
Fragility Functions ◽  
Rc Structures

Seismic fragility functions for code compliant and non-compliant RC SMRF structures in Pakistan

2018 ◽  
Vol 16 (10) ◽  
pp. 4675-4703 ◽  
Author(s):  
Naveed Ahmad ◽  
Asif Shahzad ◽  
Qaisar Ali ◽  
Muhammad Rizwan ◽  
Akhtar Naeem Khan
Keyword(s):  
Seismic Fragility ◽  
Fragility Functions

Analysis of Seismic Fragility Functions of Highway Embankments

2020 ◽  
Author(s):  
Balázs Hübner ◽  
András Mahler
Keyword(s):  
Finite Element ◽  
Earthquake Engineering ◽  
Seismic Fragility ◽  
Response Analysis ◽  
Fragility Functions ◽  
Ground Response ◽  
Ground Response Analysis ◽  
Fragility Function ◽  
Damage States ◽  
Log Normal

Vulnerability assessment of structures is a vitally important topic among earthquake engineering researchers. Generally, their primary focus is on the seismic performance of buildings. Less attention is paid to geotechnical structures, even though information about the performance of these structures (e.g. road embankments, levees, cuts) during an earthquake is essential for planning remediation and rescue efforts after disasters. In this paper the seismic fragility functions of a highway embankment are defined following an analytical methodolgy. The technique is a displacement-based evaluation of seismic vulnerability. Displacements of an embankment during a seismic event are approximated by a 2-D nonlinear ground response analysis using the finite element method. The numerical model was calibrated based on the results of a 1-D nonlinear ground response analysis. The expected displacements were calculated for 3 different embankment heights and Peak Ground Acceleration (PGA) values between 0,05 and 0,35g. Based on the results of the 2-D finite element analysis, the relationship between displacements and different seismic intensity measures (PGA, Arias-intensity) was investigated. Different damage states were considered, and the probability of their exceedance was investigated. The seismic fragility functions of the embankments were developed based on probability of exceedance of these different damage states based on a log-normal fragility function. The legitimacy of using a log-normal fragility function is also examined.

Efficient seismic fragility functions through sequential selection

2020 ◽  
Vol 87 ◽  
pp. 101977 ◽  
Author(s):  
Francisco Peña ◽  
Ilias Bilionis ◽  
Shirley J. Dyke ◽  
Yenan Cao ◽  
George P. Mavroeidis
Keyword(s):  
Seismic Fragility ◽  
Fragility Functions ◽  
Sequential Selection

Seismic Fragility Functions for Sewerage Pipelines

2015 ◽  
Author(s):  
M. Liu ◽  
S. Giovinazzi ◽  
P. Lee
Keyword(s):  
Seismic Fragility ◽  
Fragility Functions

scholarly journals Embankment seismic fragility assessment: A case study on Xi’an-Baoji expressway (China)

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246407
Author(s):  
Fa Che ◽  
Chao Yin ◽  
Xingkui Zhao ◽  
Zhinan Hu ◽  
Lu Sheng ◽  
...  
Keyword(s):  
Fragility Curves ◽  
Retaining Wall ◽  
Seismic Damage ◽  
Damage Parameter ◽  
Seismic Fragility ◽  
Response Analysis ◽  
Rc Structures ◽  
Fill Soil ◽  
Soil Foundation ◽  
Wall System

Although embankment seismic damages are very complex, there has been little seismic fragility research yet. Researches on seismic fragility of bridges, dams and reinforced concrete (RC) structures have achieved fruitful results, which can provide references for embankment seismic fragility assessment. Meanwhile, the influencing degrees of retaining structures, such as retaining walls on the embankment seismic performances are still unclear. The K1025+470 embankment of the Xi’an-Baoji expressway was selected as the research object, and the finite difference models of the embankment fill-soil foundation system and embankment fill-soil foundation-retaining wall system were established. The ground-motion records for Incremental Dynamic Analysis (IDA) were selected and the dynamic response analysis were conducted. Probabilistic Seismic Demand Analysis (PSDA) was used to deal with the IDA results and the seismic fragility curves were generated. Based on the assessment results, the influences of the retaining wall on the embankment seismic fragility were further verified. The research results show that regardless of which seismic damage parameter is considered or the presence or absence of the retaining wall, larger PGAs always correspond to higher probabilities of each seismic damage grade. Seismic damages to the embankment fill-soil foundation-retaining wall system are always lower than those of the embankment fill-soil foundation system under the same PGA actions, thus, the retaining wall can decrease the embankment seismic fragility significantly.

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