- Soil Liquefaction/Nonliquefaction in the Achaia-Ilia (Greece) 2008 Earthquake: Field Evidence, Site Characterization and Ground Motion Assessment
- Anastasios Batilas ; Panagiotis Pelekis ; Vasileios Vlachakis ; George Athanasopoulos
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2014 , Volume: 2
- Geotechnical Earthquake Engineering ; Liquefaction Engineering ; Cone Penetration Testing (CPT) ; Geophysics ; Standard Penetration Testing (SPT)
- Keywords: soil liquefaction ; Field observations ; site characterization ; Achaia-Ilia Earthquake (2008) ; Peak ground acceleration
- Abstract
Macroseismic observations in the meizoseismal area of the Achaia-Ilia, Greece, Mw 6.4 earthquake of 8 June, 2008, have shown that soil liquefaction occurred at a number of sites up to distances of 25 km from the causative fault. In one of these sites (SITE-I at coastal zone of Kato Achaia) the occurrence of liquefaction was extensive and was followed by lateral spreading. In another nearby site (SITE-II) only marginal liquefaction (or nonliquefaction) was observed. Following the macroseismic observations, a geotechnical investigation was carried out at SITE-I and SITE-II which included exploratory boreholes with continuous sampling, SPT measurements, CPT soundings, surface wave measurements (SASW, MASW, ReMi) and laboratory testing. Based on the results of geotechnical investigation, the soil stratigraphy and pertinent soil properties were evaluated in the liquefaction/nonliquefaction locations. The assessment of peak ground acceleration at the area of SITE-I and SITE-II was based on attenuation relations and shaking table tests performed to simulate the observed behavior of an overturned (during the main shock), barrel-shaped, plastic, water filled container sitting on the ground surface at SITE-I. It is believed that the data presented in this paper can be used to 1) check the validity of current liquefaction susceptibility criteria/liquefaction triggering relationships, and 2) establish a well documented liquefaction case history that can be part of future liquefaction databases. PDF |
- Cyclic loading of caisson supported offshore wind structures in sand
- R. Charlier ; D. Cathie ; B. Stuyts ; H. Versteele
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Offshore Geotechnics ; Energy Geotechnics ; Soil Dynamics ; Liquefaction Engineering ; Caisson Foundations ; Numerical & Constitutive Modeling
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- 1st General Report for TC 203: Seismic response of soils, foundations and geotechnical structures
- J.-F. Semblat ;
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Geotechnical Earthquake Engineering ; Landslides ; Liquefaction Engineering ; Site Characterization & In-situ Testing (General) ; Numerical & Constitutive Modeling
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- 2nd General Report for TC 203: Experimental characterization and analysis of soil behaviour under earthquake loads
- F. Silvestri ;
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Geotechnical Earthquake Engineering ; Laboratory Testing ; Soil Dynamics Testing in the Laboratory ; Liquefaction Engineering ; Numerical & Constitutive Modeling
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- Collapse of Showa Bridge Revisited
- Subhamoy Bhattacharya ; Kohji Tokimatsu
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2013 , Volume: 3
- Geotechnical Earthquake Engineering ; Liquefaction Engineering
- Keywords: Showa Bridge ; Niigata earthquake ; Collapse ; Liquefaction
- Abstract
The collapse of the Showa Bridge during the 1964 Niigata earthquake features in many publications as an iconic example of the detrimental effects of liquefaction. It was generally believed that lateral spreading was the cause of failure of the bridge. This hypothesis is based on the reliable eye witness that the bridge failed 1 to 2 minutes after the earthquake started which clearly ruled out the possibility that inertia (during the initial strong shaking) was the contributor to the collapse. Bhattacharya (2003), Bhattacharya and Bolton (2004), Bhattacharya et al (2005) reanalyzed the bridge and showed that the lateral spreading hypothesis cannot explain the failure of the bridge. The aim of this short paper is to collate the research carried out on this subject and reach conclusions based on analytical studies and quantitative analysis. It is being recognised that precise quantitative analysis can be difficult due to lack of instrumented data. However, as engineers, we need to carry out order-of-magnitude calculations to discard various failure hypotheses. PDF |
- Liquefaction impact revisited
- J.B.A. Weijers ; F.M. Schenkeveld ; P. Meijers ; F.B.J. Barends
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Liquefaction Engineering ; Laboratory Testing
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- Liquefaction Susceptibility of Loose Calcareous Sand of Northern Coast in Egypt
- S.S. Agaiby ; M. Salem ; H. Elmamlouk
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Laboratory Testing ; Liquefaction Engineering
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- Seismic stability assessment of a steel plate fabricated column constructed on liquefiable grounds with different soil-layer profiles
- T. Takaine ; B. Xu ; K. Nakai
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Liquefaction Engineering ; Numerical & Constitutive Modeling ; Finite Element / Finite Difference
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- Bridge foundation on very soft alluvia with stone column ground improvement
- S. Foti ; K. Andrianopoulos ; A.K. Marinelli ; G.J. Vlavianos
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Foundation Design / Construction ; Liquefaction Engineering ; Ground Improvement
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- Cyclic Loading Behavior of Saturated Sand with Different Fabrics
- J. Yang ; H.Y. Sze
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Laboratory Testing ; Liquefaction Engineering
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- Soil Properties of Liquefied Soils in Tokyo Bay Area by the 2011 Great East Japan Earthquake
- S. Yasuda ;
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Liquefaction Engineering ; Geotechnical Earthquake Engineering
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- Large scale 1-g shake table model test on the response of a stiff pile group to liquefaction induced lateral spreading
- I. Rahmani ; A. Asefzadeh ; A. Kavand ; S.M. Haeri
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Constitutive Modeling / Soil Behavior ; Pile Foundations ; Liquefaction Engineering
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- Seismic analysis of the Lianghekou rockfill dam
- Liu Han-long ; Fei Kang
- 17th International Conference on Soil Mechanics and Geotechnical Engineering (Alexandria)
- Year: 2009
- Earth / Rockfill Dams ; Liquefaction Engineering ; Soil Dynamics
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- Evaluation of the 5% double amplitude strain criterion
- Mohtar C.S. El
- 17th International Conference on Soil Mechanics and Geotechnical Engineering (Alexandria)
- Year: 2009
- Liquefaction Engineering ; Soil Dynamics Testing in the Laboratory
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- Changes in anisotropy during liquefaction and effects on reliquefaction resistance produced by developed anisotropy associated with liquefaction
- amada S. ; K. Sato ; T. Takamori
- 17th International Conference on Soil Mechanics and Geotechnical Engineering (Alexandria)
- Year: 2009
- Liquefaction Engineering
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