Effects of fines content on liquefaction strength and dynamic settlement of reclaimed soil

Chien, Lien-Kwei; Oh, Erwin; Chang, Chih-Hsin

doi:10.1139/t01-083

Cited by 77 publications

(24 citation statements)

References 6 publications

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“…The interpreted trend of the CPT criteria does not provide consistent effects of non-plastic fines on liquefaction resistance with available laboratory-based correlations obtained by several previous researchers (e.g. Zlatovic and Ishihara, 1997;Polito and Martin, 2001;Chien et al, 2002;Thevanayagam and Martin, 2002;Kokusho, 2007;Cubrinovski et al, 2010).…”

Section: Introductioncontrasting

confidence: 70%

“…Zlatovic and Ishihara, 1997;Polito and Martin, 2001;Chien et al, 2002;Thevanayagam and Martin, 2002;Kokusho, 2007;Cubrinovski et al, 2010). The process in these studies was to directly compare the behavior of sand mixed with a specific amount of fines (less than 30% FC by weight) to that of the clean sand.…”

Section: Effects Of Fines and Relative Density On Liquefaction Resistmentioning

confidence: 99%

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Influence of non-/low plastic fines on cone penetration and liquefaction resistance

Ecemis

Karaman

2014

Engineering Geology

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Uncertainties prevail at the current liquefaction screening method based on the cone penetration test (CPT) as to whether the existence of fines increases liquefaction resistance or decrease cone penetration resistance. In this study, field-based data are used to evaluate the effects of non-/low plastic fines on liquefaction resistance at the current CPT-based liquefaction assessment method. The first part of this paper examines the effects of the coefficient of consolidation or drainage characteristics of soils containing fines on cone penetration resistance. The coefficient of consolidation is influenced by the fines content and the relative density of the soil. The second part of this paper investigates the contribution of fines content less than 30% by weight on the liquefaction resistance of soils at different relative densities. Fines content over 30% by weight and/or high plasticity of fines can cause additional complications; therefore, it needs different valuation methods, which is beyond the scope of this paper. The liquefaction resistance of sands and silty sands is reinterpreted from the current CPT-based liquefaction assessment method. The trend, which presents the change of liquefaction resistance with fines content at the same relative density, is compared with the available laboratory-based data in the literature. The results show that the interpreted trend is not consistent with the laboratory-based correlations obtained by several previous researchers. Therefore, there will be probably some inaccuracies in estimation of liquefaction potential of silty sand using the current CPT-based liquefaction assessment method.

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Section: Introductioncontrasting

confidence: 70%

Section: Effects Of Fines and Relative Density On Liquefaction Resistmentioning

confidence: 99%

Influence of non-/low plastic fines on cone penetration and liquefaction resistance

Ecemis

Karaman

2014

Engineering Geology

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“…Reclaimed platforms can, however, be seriously affected by settlements, which may cause severe damage to buildings, highways, Over the past few years, the coastal area of Lingang New City, which extends for about 300 km 2 (45% of which was reclaimed from intertidal wetlands), has been subjected to broad modifications in its geomorphology and urban environment. Due to land reclamation, two main inherent problems have arisen: (i) liquefaction; and (ii) ground settlements, both of which are responsible for serious failures and damage to infrastructures of reclaimed foundations [12][13][14]. Results of geotechnical analyses have revealed that such a settlement usually continues over the entire reclamation facility lifetime.…”

Section: Introductionmentioning

confidence: 99%

“…Due to land reclamation, two main inherent problems have arisen: (i) liquefaction; and (ii) ground settlements, both of which are responsible for serious failures and damage to infrastructures of reclaimed foundations [12][13][14]. Results of geotechnical analyses have revealed that such a settlement usually continues over the entire reclamation facility lifetime.…”

Section: Introductionmentioning

confidence: 99%

The Use of C-/X-Band Time-Gapped SAR Data and Geotechnical Models for the Study of Shanghai’s Ocean-Reclaimed Lands through the SBAS-DInSAR Technique

et al. 2016

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Abstract:In this work, we investigate the temporal evolution of ground deformation affecting the ocean-reclaimed lands of the Shanghai (China) megacity, from 2007 to 2016, by applying the Differential Synthetic Aperture Radar Interferometry (DInSAR) technique known as the Small BAseline Subset (SBAS) algorithm. For the analysis, we exploited two sets of non-time-overlapped synthetic aperture radar (SAR) data, acquired from 2007 to 2010, by the ASAR/ENVISAT (C-band) instrument, and from 2014 to 2016 by the X-band COSMO-SkyMed (CSK) sensors. The long time gap (of about three years) existing between the available C-and X-band datasets made the generation of unique displacement time-series more difficult. Nonetheless, this problem was successfully solved by benefiting from knowledge of time-dependent geotechnical models, which describe the temporal evolution of the expected deformation affecting Shanghai's ocean-reclaimed platforms. The combined ENVISAT/CSK (vertical) deformation time-series were analyzed to gain insight into the future evolution of displacement signals within the investigated area. As an outcome, we find that ocean-reclaimed lands in Shanghai experienced, between 2007 and 2016, average cumulative (vertical) displacements extending down to 25 centimeters.

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“…Indeed, two main inherent problems arise for land-reclaimed areas: liquefaction and ground settlement and both of them may cause serious ground failures and damages to infrastructures on reclaimed foundations [12][13][14]. Moreover, the results of geotechnical analyses have revealed that such a kind of settlement continues over the entire reclamation facility lifetime.…”

Section: Introductionmentioning

confidence: 99%

The Joint Use of Multiple Satellite SAR Data and Geotechnical Models for the Study of the Shanghai Ocean-Reclaimed Lands

Pepe

Bonano

Zhao³

et al. 2016

Preprint

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Abstract:We present in this work the results of a multi-platform Differential Interferometry Synthetic Aperture Radar (DInSAR) analysis, which is aimed at investigating the surface displacements occurred over the past few years in the ocean-reclaimed platforms of the Shanghai megacity (China). To this purpose, the advanced multi-temporal Small BAseline Subset (SBAS) algorithm has been applied to two sequences of SAR images collected by the ASAR/ENVISAT and by the COSMO-SkyMed (CSK) sensors, respectively, from the year 2007 to 2016. The long time gap (of about three years) existing between the available ASAR/ENVISAT and CSK datasets has given rise to additional difficulties for their joint exploitation and combination. This problem has successfully been solved by benefiting from the knowledge of a time-dependent model that describes the temporal evolution of the expected deformations affecting the Shanghai ocean-reclaimed platforms. As a result, we have retrieved surface displacement time-series that are helpful for a better understanding of the on-going deformation phenomena. As an outcome, we have found that ocean-reclaimed platforms have been experienced from 2007 to 2016 an average cumulative ground displacement of about 25 cm.

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Effects of fines content on liquefaction strength and dynamic settlement of reclaimed soil

Cited by 77 publications

References 6 publications

Influence of non-/low plastic fines on cone penetration and liquefaction resistance

Influence of non-/low plastic fines on cone penetration and liquefaction resistance

The Use of C-/X-Band Time-Gapped SAR Data and Geotechnical Models for the Study of Shanghai’s Ocean-Reclaimed Lands through the SBAS-DInSAR Technique

The Joint Use of Multiple Satellite SAR Data and Geotechnical Models for the Study of the Shanghai Ocean-Reclaimed Lands

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