Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Geotechnical Design Parameters Using the Seismic Piezocone
This report is an evaluation of the seismic piezocone for geotechnical design parameters. The seismic piezocone is a direct-push device that is hydraulically pushed into the ground at a constant rate of 2 cm/sec. During penetration, the device measures the resistance at the tip and along the side. The device also measures the water pressure due to the soil penetration. Based on these measured parameters, a number of correlations have been developed to determine a vast number of soil properties that include; undrained shear strength, stress history, compressibility, and soil classification. Correlations have also extended to be used to estimate the SPT N-values (blowcounts). The device can also be used to conduct seismic testing in a similar manner to traditional downhole testing. This only requires a stop in penetration and approximately 30 seconds to create a shear wave source, measure the time for the shear wave travel, and save the data on the computer. Therefore, a device that can classify the soil, determine design parameters (such as the SPT N-value), and also be used to conduct seismic testing would be an extremely valuable tool in geotechnical engineering.
Evaluation of Geotechnical Design Parameters Using the Seismic Piezocone
This report is an evaluation of the seismic piezocone for geotechnical design parameters. The seismic piezocone is a direct-push device that is hydraulically pushed into the ground at a constant rate of 2 cm/sec. During penetration, the device measures the resistance at the tip and along the side. The device also measures the water pressure due to the soil penetration. Based on these measured parameters, a number of correlations have been developed to determine a vast number of soil properties that include; undrained shear strength, stress history, compressibility, and soil classification. Correlations have also extended to be used to estimate the SPT N-values (blowcounts). The device can also be used to conduct seismic testing in a similar manner to traditional downhole testing. This only requires a stop in penetration and approximately 30 seconds to create a shear wave source, measure the time for the shear wave travel, and save the data on the computer. Therefore, a device that can classify the soil, determine design parameters (such as the SPT N-value), and also be used to conduct seismic testing would be an extremely valuable tool in geotechnical engineering.
Evaluation of Geotechnical Design Parameters Using the Seismic Piezocone
T. Bennert (Autor:in) / A. Maher (Autor:in) / N. Gucunski (Autor:in)
2002
126 pages
Report
Keine Angabe
Englisch
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