Experimental Research on Determining the Geotechnical Parameters with CPTU Methods
Cone penetration test is a fast and efficient in-situ test technique. With the development of sensor technology and the use of new probes, such test is employed in more fields and reveals more soil parameters. Based on the advanced CPTU equipment, porewater pressure dissipation processes were measured at different depths, dissipation characteristics of the sandy soil and cohesive soil were analyzed respectively; Then, consolidation and permeability coefficients of the cohesive soil were calculated, the results are close to the laboratory test results. Undrained shear strength of soft clay were determined use theoretical and empirical methods, calculation accuracy of these methods were analyzed and the results show that the total cone tip resistance method is in good consistence with the measured values. CPTU is able to provide plenty of geotechnical parameters; therefore, more experience of regional tests should be drawn so as to produce more economic and technical benefit in the future.
Guangfan Li, Yong Huang and Chaohe Chen
Y. Y. An and B. T. Wang, "Experimental Research on Determining the Geotechnical Parameters with CPTU Methods", Advanced Materials Research, Vols. 250-253, pp. 1798-1803, 2011