Soil Liquefaction Hazard Assessment Based on Geoelectrical Imaging and Geotechnical Data

2018 ◽  
Author(s):  
Rajni Devi ◽  
Rambhatla G. Sastry ◽  
Narendra K. Samadhiya
Keyword(s):  
Hazard Assessment ◽  
Soil Liquefaction ◽  
Geotechnical Data ◽  
Liquefaction Hazard

GIME

2011 ◽  
pp. 110-132
Author(s):  
We Shinn Ku ◽  
Roger Zimmermann
Keyword(s):  
Web Services ◽  
Soil Liquefaction ◽  
Federal Agencies ◽  
Insurance Companies ◽  
Data Format ◽  
Geotechnical Data ◽  
Civil Infrastructures ◽  
Liquefaction Hazard ◽  
Geotechnical Information ◽  
Critical Interest

We present an information architecture using Web services for exchanging and utilizing geotechnical information, which is of critical interest to a large number of municipal, state and federal agencies as well as private enterprises involved with civil infrastructures. For example, in the case of soil liquefaction hazard assessment, insurance companies rely on the availability of geotechnical data for evaluating potential earthquake risks and consequent insurance premiums. The exchange of geotechnical information is currently hampered by a lack of a common data format and service infrastructure. We propose an infrastructure of Web services, which handles geotechnical data via an XML format. Hereafter we report on the design and some initial experiences.

scholarly journals Probabilistic seismic liquefaction hazard assessment of Kathmandu valley, Nepal

2020 ◽  
Vol 11 (1) ◽  
pp. 259-271
Author(s):  
Sajan K. C. ◽  
Sanish Bhochhibhoya ◽  
Purusottam Adhikari ◽  
Prasanna Adhikari ◽  
Dipendra Gautam
Keyword(s):  
Hazard Assessment ◽  
Kathmandu Valley ◽  
Seismic Liquefaction ◽  
Liquefaction Hazard

scholarly journals Characterization and Liquefaction Hazard Assessment of Two Hungarian Liquefied Sites from the 1956 Dunaharaszti Earthquake

2020 ◽  
Author(s):  
Zoltán Bán ◽  
Erzsébet Győri ◽  
László Tóth ◽  
Zoltán Gráczer ◽  
András Mahler
Keyword(s):  
Hazard Assessment ◽  
Back Analysis ◽  
Seismic Loading ◽  
Ground Acceleration ◽  
The Past ◽  
Annual Probability ◽  
Moderate Seismicity ◽  
Liquefaction Hazard ◽  
Back Calculation

The seismicity of Hungary can be considered moderately active, nevertheless contemporary reports from the past approx. 350 years documented surface manifestations of liquefaction occurrences. The last such earthquake was the 1956 Dunaharaszti ground motion, for which the location of two liquefied sites could be identified approx. 60 years after the event. This provided an excellent opportunity to analyze possibly the only accessible liquefied sites in Hungary. Analysis of the two sites included field and laboratory tests allowing the back-calculation of maximum horizontal ground acceleration of the earthquake. This parameter was previously unknown because the closest seismometer saturated during the event. The performed back-analysis using the principles of paleoliquefaction studies was the first of such analyses in the country. In areas with low to moderate seismicity, geotechnical engineers often neglect and overlook liquefaction hazard, however, when it is addressed, the hazard is often overestimated due to improper characterization of the seismic loading and site characterization. To explore this observation more deeply, probabilistic seismic and liquefaction hazard assessment were carried out at the two liquefied sites and it was found that this conclusion is also valid for Hungary, but the degree of conservatism of the pseudo-probabilistic procedures decreases with increasing earthquake return period (lower annual probability of occurrence).

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