Browse > Article
http://dx.doi.org/10.7843/kgs.2021.37.6.29

Estimation of Shear Wave Velocity of Weathered Granite Layer Using Nonlinear Multiple Regression Analysis; A Case Study in South Korea  

Lee, Seung-Hwan (Korea Construction Standard Center, Korea Institute of Civil Engrg. and Building Technology)
Baek, Sung-Ha (Dept. of Future Technology and Convergence Research, Korea Institute of Civil Engrg. and Building Technology)
Chung, Choong-Ki (Dept. of Civil & Environmental Engrg., Seoul National Univ.)
Kwak, Tae-Young (Dept. of Infrastructure Safety Research, Korea Institute of Civil Engrg. and Building Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.37, no.6, 2021 , pp. 29-37 More about this Journal
Abstract
Since many geotechnical structures are constructed on a weathered granite layer, it is important to evaluate their characteristics. As a seismic design is the more important nowadays, the demands to estimate a shear wave velocity (VS) based on acceptable methods are increasing. In this study, an empirical equation predicting VS of the weathered granite layer is suggested based on the nonlinear multiple variable regression analysis whose independent variables are both SPT (Standard penetration test)-N60 and chemical weathering index. It is concluded that the accuracy of the empirical equation estimating VS of the weathered granite layer increases when it considers the chemical weathering index as an additional independent variable compared to the result of simple regression analysis using only N60.
Keywords
Chemical weathering index; Shear wave velocity; Site characterization; Standard penetration test; Weathered granite layer;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Lee, S. H. (2020), "Estimation of Geotechnical Properties on Highly and Completely Weathered Granite Using Chemical Weathering Index", PhD thesis, Department of Civil and Environmental Engineering, Seoul National University.
2 Jung, J. S., Park, J. B., Lim, H. S., Park, G. R., and Oh, W. G. (2009), "Measurement and Application of Shear Wave Velocity for Resonable Soil Classification in Seismic Design", Korean Land and Housing Institute.
3 Lee, J. K. and Chang, S. M. (2003), "Evaluation of Weathering Intensity and Strength Parameter for Weathered Granite Masses (I)" J. of the Korean Geotechnical Society, Vol.19, No.2, pp.227-36.
4 Irfan, T. Y. (1996), "Mineralogy, Fabric Properties and Classification of Weathered Granites in Hong Kong", Quarterly Journal of Engineering Geology and Hydrogeology, Vol.29, No.1, pp.5-35.   DOI
5 Sun, C. G., Chung, C. K., and Kim, D. S. (2007), "Determination of Mean Shear Wave Velocity to the Depth of 30m Based on Shallow Shear Wave Velocity Profile", J. of the Earthquake Engineering Society of Korea, Vol.11, No.1, pp.45-57.   DOI
6 Sun, C. G., Kim, B. H., and Chung, C. K. (2006), "Investigation on Weathering Degree and Shear Wave Velocity of Decomposed Granite Layer in Hongsung", J. of the Korean Society of Civil Engineers Vol.26, No.6C, pp.431-43.
7 Udagedara, D. T., Oguchi, C. T., and Gunatilake, A. A. J. K. (2017), "Combination of Chemical Indices and Physical Properties in the Assessment of Weathering Grades of Sillimanite-garnet Gneiss in Tropical Environment", Bulletin of Engineering Geology and the Environment, Vol.76, No.1, pp.145-157.   DOI
8 Vogel, D. E. (1975), "Precambrian Weathering in Acid Metavolcanic Rocks from the Superior Province, Villebon Township, South-central Quebec", Canadian Journal of Earth Sciences, Vol.12, No.12, pp. 2080-2085.   DOI
9 Rigopoulos, I., Tsikouras, B., Pomonis, P., and Hatzipanagiotou, K. (2015), "Assessment of the Engineering behavior of Ultramafic and Mafic Rocks Using Chemical Indices", Engineering Geology, Vol.196, pp.222-237.   DOI
10 Price, J. R. and Velbel, M. A. (2003), "Chemical Weathering Indices Applied to Weathering Profiles Developed on Heterogeneous Felsic Metamorphic Parent Rocks", Chemical geology, Vol.202, No.3-4, pp.397-416.   DOI
11 Arel, E. and Tugrul, A. (2001), "Weathering and its Relation to Geomechanical Properties of Cavusbasi Granitic Rocks in Northwestern Turkey", Bulletin of Engineering Geology and the Environment, Vol.60, No.2, pp.123-133.   DOI
12 ASTM D1586 (2011), "Standard Test Method for Standard Peneteration Test (SPT) and Split-Barrel Sampling of Soils".
13 ASTM D6274 (2018), "Standard Guide for Conducting Borehole Geophysical Logging -Gamma".
14 ASTM D7400 (2014), "Standard Test Method for Downhole Seismic Testing".
15 Choi, Yongkyu, Kwon, O. S., Lee, J. S, Choi, S. S., and Jung, S. M. (2010), "An Analysis on Co-relationships Betweeen In-situ Investigation Methods and End Bearing Capacity of A Drilled Shaft Socketed into the Weathered Zone", J. of the Korean Society of Civil Engineers, Vol.30, No.2C, pp. 95-107.
16 Ruxton, B. P. (1968), "Measures of the Degree of Chemical Weathering of Rocks", The Journal of Geology, Vol.76, No.5, pp.518-527.   DOI
17 Gupta, A. S. and Rao, S. K. (2001), "Weathering Indices and Their Applicability for Crystalline Rocks", Bulletin of Engineering Geology and the Environment, Vol.60, No.3, pp.201-221.   DOI
18 Kim, B. J., Ho, J. K., and Hwang, Y. C. (2014), "Prediction of Shear Wave Velocity on Sand Using Standard Penetration Test Results : Application of Artificial Neural Network Model", J. of the Korean Geotechnical Society, Vol.30, No.5, pp.47-54.   DOI
19 Nesbitt, H. W. (1979), "Mobility and Fractionation of Rare Earth Elements during Weathering of a Granodiorite", Nature, Vol.279, No.5710, pp.206-210.   DOI
20 Sun, C. G., Kim, H. J., and Chung, C. K. (2008), "Deduction of Correlations between Shear Wave Velocity and Geotechnical In-Situ Penetration Test Data", J. of the Earthquake Engineering Society of Korea, Vol.12, No.4, pp.1-10.   DOI
21 Vogt, T. (1927), "Sulitjelmafeltets Geolgi og Petrografi", Norges Geologiske Undersokelse, Vol.121, pp.1-560 (in Norwegian with English abstract).
22 Do, Jongnam, Hwang, Piljae, Chung, Sungrae, and Chun, Byungsik (2011), "Analysis on Relation of S-wave Velocity and N Value for Stratums in Chungcheong Buk-do", J. of the Korean Geo-Environmental Society, Vol.12, No.10, pp.13-22.
23 Ban, J. D., Moon, S. W., Lee, S. W., Lee, J. G., and Seo, Y. S. (2017), "Physical and Chemical Weathering Indices for Biotite Granite and Granitic Weathered Soil in Gyeongju", The Journal of Engineering Geology, Vol.27, No.4, pp.451-462.   DOI
24 Chiu, C. F. and Ng, C. W. (2014), "Relationships between Chemical Weathering Indices and Physical and Mechanical Properties of Decomposed Granite", Engineering Geology, Vol.179, pp.76-89.   DOI
25 Dearman, W. R., Baynes, F. J., and Irfan, T. Y. (1978), "Engineering Grading of Weathered Granite", Engineering Geology, Vol.12, pp. 345-374.   DOI