| Title |
A Study on Skin Friction Estimation of Drilled Shaft Socketed in Weathered Granite by IGM’s Theory |
| Keywords |
drilled shaft;IGM’s theory;pilot test site;static load test;load transfer test;현장타설말뚝;IGM이론;시험시공;정재하시험;하중전이시험 |
| Abstract |
The design method of IGM proposed by FHWA to predict bearing capacities of drilled shaft socketed in weathered granite has been used generally. In this study, site investigations were performed in a pilot test site, and disturbance and roughness were measured. Geotechnical properties were assorted as cohesive material and undisturbed and smooth surface. A simple relationship was proposed to predict unconfined strength (q<SUB>u</SUB>) of weathered granite using static load test results, load transfer test results and N values. It was confirmed that the design method to estimate bearing capacities of drilled shaft could improve IGM’s theory for weathered granite from this research. |