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Relationship between Low Strain Shear Modulus and Standard Penetration Test N Values

Anbazhagan, P and Sitharam, TG (2010) Relationship between Low Strain Shear Modulus and Standard Penetration Test N Values. In: Geotechnical Testing Journal, 33 (2). pp. 150-164.

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A low strain shear modulus plays a fundamental role in the estimation of site response parameters In this study an attempt has been made to develop the relationships between standard penetration test (SPT) N values with the low strain shear modulus (G(max)) For this purpose, field experiments SPT and multichannel analysis of surface wave data from 38 locations in Bangalore, India, have been used, which were also used for seismic microzonation project The in situ density of soil layer was evaluated using undisturbed soil samples from the boreholes Shear wave velocity (V-s) profiles with depth were obtained for the same locations or close to the boreholes The values for low strain shear modulus have been calculated using measured V-s and soil density About 215 pairs of SPT N and G(max) values are used for regression analysis The differences between fitted regression relations using measured and corrected values were analyzed It is found that an uncorrected value of N and modulus gives the best fit with a high regression coefficient when compared to corrected N and corrected modulus values This study shows better correlation between measured values of N and G(max) when compared to overburden stress corrected values of N and G(max)

Item Type: Journal Article
Publication: Geotechnical Testing Journal
Publisher: ASTM International
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: shear modulus,SPT,MASW,correlation
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 13 Jul 2010 07:13
Last Modified: 13 Jul 2010 07:13
URI: http://eprints.iisc.ac.in/id/eprint/29114

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