Correlations Between Shear Wave Velocity and In-Situ Penetration Test Results for Korean Soil Deposits

Sun, Chang‐Guk; Cho, Chang-Soo; Son, Miwon; Shin, Jehyun

doi:10.1007/s00024-012-0516-2

Cited by 47 publications

(26 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such tests are rare in site investigations for conventional geotechnical structures, such as general foundations and excavation, and are often only conducted if earthquake engineering research is necessary (Dikmen 2009;Sun et al 2013). In cases in which geotechnical site investigations are conducted, SPT is typically performed, together with borehole drilling, so that the N value with depth can be obtained (Fig.…”

Section: Relationship Between Shear Wave Velocity and N Value In The mentioning

confidence: 99%

“…Many N data are available from practical SPT studies carried out over a long time period Imai and Tonouchi (1982) V S = 97 N 0.314 Ohsaki and Iwasaki (1973) V S = 82 N 0.39 Ohta and Goto (1978) V S = 85 N 0.348 Hasancebi and Ulusay (2007 Sun et al 2013); thus, if the N value can be used to predict the degree of weathering with depth in the decomposed granite layer, then empirical weathering degree analysis can be conducted in many parts of South Korea using conventional site investigation data. Figure 10 shows the relationships among the MWPI, WIP, and 100/VR, and the N value from the SPT.…”

Section: Relationship Between Weathering Degree and Geotechnical Paramentioning

confidence: 99%

“…Therefore, this study used only V S determined by crosshole and downhole tests of the weathered layer in Hongseong to determine the correlations between V S and N values. For blow counts above 50 (e.g., 50/25 or 50/6) in the layers of weathered soil and weathered rock, N values were extrapolated linearly to a penetration depth of 30 cm to analyze the regression between V S and N values (Oh and Sun 2008;Sun et al 2013). The absolute meaning of N values measured in the field may differ between tests owing to differences such as the type of hammer, the method of using the hammer, borehole diameter, ground conditions, rod length, difference in working capability, and effective overburden pressure (Aggour and Radding 2001).…”

Section: Relationship Between Shear Wave Velocity and N Value In The mentioning

confidence: 99%

“…As a real index signifying geotechnical stiffness, V S can help to reveal the subsurface structure of a target site (Kim et al 2002;Islam and Chik 2011). In addition, this important geotechnical parameter is directly used to evaluate seismic response characteristics for purposes of both earthquake-resistant design and understanding static soil behavior (Ö ver et al 2011;Sun 2012;Sun et al 2013). Therefore, the weathering degree and spatial distribution of V S in a decomposed granite layer are important basic factors for understanding the characteristics of this representative layer in the Korean Peninsula.…”

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Geotechnical comparison of weathering degree and shear wave velocity in the decomposed granite layer in Hongseong, South Korea

et al. 2015

Self Cite

View full text Add to dashboard Cite

As part of a fundamental characterization of a subsurface layer in South Korea, the weathering degree and shear wave velocity (V S ) were evaluated in a decomposed granite in Hongseong, using X-ray fluorescence analyses and site investigations, including borehole drilling with standard penetration test (SPT) and in situ seismic tests. The subsurface layer was composed of a weathered layer 10-40 m thick at most sites. Weathering degree analyses indicated that three chemical weathering indices, the modified weathering potential index (MWPI), Vogt ratio (VR), and weathering index of Parker (WIP), generally increased with decreasing depth. In situ seismic tests revealed that V S ranged between 200 and 500 m/s in the weathered layer. Using the V S and N values from the SPT at borehole seismic testing sites, correlations between V S and N values were established for the weathered layer. Furthermore, examination of the relationships of the V S and N values with the MWPI, WIP, and 100/VR indices showed that the index values increased linearly with increasing V S and exponentially with increasing N values.

show abstract

Section: Relationship Between Shear Wave Velocity and N Value In The mentioning

confidence: 99%

Section: Relationship Between Weathering Degree and Geotechnical Paramentioning

confidence: 99%

Section: Relationship Between Shear Wave Velocity and N Value In The mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Geotechnical comparison of weathering degree and shear wave velocity in the decomposed granite layer in Hongseong, South Korea

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…are applied according to the soil type based on the geotechnical spatial grid. Shear wave velocities, which are of major importance, are determined by a comparative interpretation of seismic refraction tests or the results of the empirical equation for V S using SPT-N values: V S = 65.64N 0.407 given by Sun et al [40]. And the nonlinear dynamic curve is determined restrictively through laboratory testing, although limited by sampling of the current conditions in the target port area.…”

Section: Real-time Seismic Load Determinationmentioning

confidence: 99%