Empirical Correlation of Soil Liquefaction Based on SPT N-Value and Fines Content

Tokimatsu, Kohji; Yoshimi, Yoshiaki

doi:10.3208/sandf1972.23.4_56

Cited by 363 publications

(154 citation statements)

References 23 publications

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“…(5) involves the cyclic and permanent ground displacement profiles or shear strains to be developed in the liquefiable deposit under consideration. Simplified estimates of such shear strains have been presented by Tokimatsu and Yoshimi (1983), Seed et al (1985), and Ishihara and Yoshimine (1992), as shown in Fig. 7.…”

Section: Cyclic and Permanent Ground Displacements During Earthquakesmentioning

confidence: 99%

Effects of Liquefaction-Induced Ground Displacements on Pile Performance in the 1995 Hyogoken-Nambu Earthquake

Tokimatsu

Asaka

1998

SOILS AND FOUNDATIONS

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203

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The field performance of various pile foundations that experienced soil liquefaction and lateral spreading in the 1995 Hyogoken-Nambu earthquake are summarized. It is found that (1) damage tends to occur in non-ductilepiles and at the interface between liquefied and nonliquefied layers; (2) the piles of a building near the waterfront show different failure modes in the direction perpendicular to the waterfront, while those away from the waterfront show similar deformation patterns. Cyclic and permanent ground displacements during and after earthquakes areestimated from field and aerial photographic surveys as well as analyses of strong motion records, and a simplified method for evaluating those displacements is presented. Pseudo-static analyses using p-y curves are conducted for well-documented case histories of pile foundations on which ground displacements estimated from the proposed method are imposed together with inertial forces from superstructures. The computed results agree reasonably well with the field performance of various pile foundations subjected to different ground movements. These findings confirm that the kinematic forces from cyclic and permanent ground displacements together with their spatial variation could have significant effects on pile damage. The proposed model could be effectively used to estimate deformation and stresses in piles subjected to ground movements.

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Section: Cyclic and Permanent Ground Displacements During Earthquakesmentioning

confidence: 99%

Effects of Liquefaction-Induced Ground Displacements on Pile Performance in the 1995 Hyogoken-Nambu Earthquake

Tokimatsu

Asaka

1998

SOILS AND FOUNDATIONS

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203

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“…For instance, [21] evaluated the methods by Refs. [22] and [23] to observe the adequacy of these procedures to be applied on the soil conditions in Central Taiwan. They found that one of the major diferences is the correction factor used for ines content, while the factor of safety computed for the liqueied area was similar in both methods for ines content less than 35%.…”

Section: Previous Cases Of Liquefaction Of Sand Containing Non-plastimentioning

confidence: 99%

New Insight in Liquefaction After Recent Earthquakes: Chile, New Zealand and Japan

Alberto-Hernandez¹,

Towhata²

2017

Earthquakes - Tectonics, Hazard and Risk Mitigation

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Liquefaction has proved to be one of the major geotechnical issues caused by earthquakes. It is one of the most costly phenomena and has afected several cities around the world. Although the topic has been studied since the 1960s, new questions are emerging. The earthquakes of Chile in 2010, New Zealand in 2010 and 2011, and Japan in 2011 had in common not only being some of the largest earthquakes of this decade but also having a problem of extensive liquefaction. Although most seismic codes have provisions against liquefaction, there are still some misconceptions regarding the characteristics of soil susceptibility and the efect of repeated liquefaction. This chapter introduces a detailed report of the damage caused by liquefaction in the cities afected by those earthquakes and also highlights observations in liqueied areas that were unexpected.Advanced geotechnical testing was conducted and compiled to compare them with previous assessment criteria and observations. A more comprehensive framework for the evaluation of liquefaction susceptibility and countermeasures will be presented and a roadmap of future work in the area will be described.

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“…Araştırma kapsamında 2010 ve 2011 yılları arasında jeoteknik inceleme amacı ile açılan 58 araştırma sondajı verileri kullanılmıştır. İnceleme alanının sıvılaşma potansiyeli [26] tarafından önerilen sıvılaşma yöntemi kullanılarak değerlendirilmiş ve CBS uygulamaları yardımıyla inceleme alanının farklı deprem büyüklüklerine göre sıvılaşma risk haritaları oluşturulmuştur. Bu çalışmanın sonuçları, belediye uygulamalarında, şehir ve bölge planlarının oluşturulmasında, il afet yönetim planlarının hazırlanmasında can ve mal güvenliği korumak için kullanılabilir.…”

Section: Introductionunclassified

Evaluation of liquefaction risk using geographic information system (GIS): A case study in Aksaray

Kavurmaci¹

2017

Pamukkale J Eng Sci

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Empirical Correlation of Soil Liquefaction Based on SPT N-Value and Fines Content

Cited by 363 publications

References 23 publications

Effects of Liquefaction-Induced Ground Displacements on Pile Performance in the 1995 Hyogoken-Nambu Earthquake

Effects of Liquefaction-Induced Ground Displacements on Pile Performance in the 1995 Hyogoken-Nambu Earthquake

New Insight in Liquefaction After Recent Earthquakes: Chile, New Zealand and Japan

Evaluation of liquefaction risk using geographic information system (GIS): A case study in Aksaray

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