| Title |
An Analysis on Co-relationships Between In-situ Investigation Methods and End Bearing Capacity of A Drilled Shaft Socketed into the Weathered Zone |
| Authors |
최용규 ; 권오성 ; 이종성 ; 최성순 ; 정성민 |
| Keywords |
unconfined compression strength;DCPT;end bearing capacity;in-situ tests;a drilled shaft;credibility;design chart;일축압축강도;한국형타격콘관입시험(DCPT);선단지지력;원위치시험;현장타설말뚝;상관관계;설계도표 |
| Abstract |
To calculate the end bearing capacity of a drilled Shaft socketed into the rockmass, the unconfined compression strength could be used. But it is difficult to find the unconfined compression strength because it is impossible to get undisturbed samples in weathered soils and rocks. So, to calculate the end bearing capacity, the existing bearing formula could not be used. In this study, for five zones (near pile tip, tip-lower 1D, tip~lower 2D, upper 1D~lower 1D, upper 1D~lower 2D), the relationships between the characteristic values of in-situ tests(SPT, DCPT PMT, BST) and the end bearing capacity of drilled shafts were analysed. As a result, DCPT results were represented the best credibility. Also, a design chart of end bearing capacity using DCPT was suggested. |