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New Frontiers in Engineering Geology and the EnvironmentNCEER Method and Application of an Embankment Slope with Liquefaction Problem in Coastal Area

New Frontiers in Engineering Geology and the Environment: NCEER Method and Application of an... [Seismic liquefaction problems of embankment slope involve two different fields such as geotechnical engineering and engineering earthquake. It’s an intersectant topic of the slope engineering and sand soil liquefaction. The embankment slope Liquefaction is a very common phenomenon in coastal area of Tangshan, China, where the ground water table is very shallow and the distribution of saturated sand soil is widespread. Adopting theoretical analysis method,the problem of seismic liquefaction for embankment slope has been studied in detail. According to the method of NCEER, the factor of safety against liquefaction is used to evaluate sand soil liquefaction for embankment slopes. Through calculating parameters of CSR (Cyclic Stress Ratio), MSF (Magnitude Scaling Factor) and CRR7.5 (Cyclic Resistance Ratio for M = 7.5 earthquakes), the computation formula for factor of safety against liquefaction (FS) can be obtained. The index of FS is relatively convenient to be used in projects. As a case study, a typical embankment slope with three layers (the upper layer is fill, the middle layer is silty sand and the sub-layer is gravel soil) is used to prove the method of NCEER, and the result shows that liquefaction will occur in saturated sand soil. Finally, the NCEER method has better application for liquefaction assessment of embankment slope in coastal area.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

New Frontiers in Engineering Geology and the EnvironmentNCEER Method and Application of an Embankment Slope with Liquefaction Problem in Coastal Area

Part of the Springer Geology Book Series
Editors: Huang, Yu; Wu, Faquan; Shi, Zhenming; Ye, Bin
Wang, G. L.; Liu, H. Y.; Wu, F. Q.; Yang, G. X.
New Frontiers in Engineering Geology and the Environment — Jun 11, 2012
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References (7)

Publisher
Springer Berlin Heidelberg
Copyright
© Springer-Verlag Berlin Heidelberg 2013
ISBN
978-3-642-31670-8
Pages
187 –190
DOI
10.1007/978-3-642-31671-5_32
Publisher site
See Chapter on Publisher Site

Abstract

[Seismic liquefaction problems of embankment slope involve two different fields such as geotechnical engineering and engineering earthquake. It’s an intersectant topic of the slope engineering and sand soil liquefaction. The embankment slope Liquefaction is a very common phenomenon in coastal area of Tangshan, China, where the ground water table is very shallow and the distribution of saturated sand soil is widespread. Adopting theoretical analysis method,the problem of seismic liquefaction for embankment slope has been studied in detail. According to the method of NCEER, the factor of safety against liquefaction is used to evaluate sand soil liquefaction for embankment slopes. Through calculating parameters of CSR (Cyclic Stress Ratio), MSF (Magnitude Scaling Factor) and CRR7.5 (Cyclic Resistance Ratio for M = 7.5 earthquakes), the computation formula for factor of safety against liquefaction (FS) can be obtained. The index of FS is relatively convenient to be used in projects. As a case study, a typical embankment slope with three layers (the upper layer is fill, the middle layer is silty sand and the sub-layer is gravel soil) is used to prove the method of NCEER, and the result shows that liquefaction will occur in saturated sand soil. Finally, the NCEER method has better application for liquefaction assessment of embankment slope in coastal area.]

Published: Jun 11, 2012

Keywords: Embankment slope; Factor of safety against liquefaction; Seismic liquefaction; Saturated sand soil

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