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한국지반공학회 / v.16, no.2, 2000년, pp.115-123 
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인천국제공항지역의 피에조콘조사와 결과의 적용
( The Application of Piezocone Penetration Test at Inchon International Airport ) |
| 김종국;성기광;김학중;김영웅; 한국건설품질시험원 지반기술과;인천국제공항공사 건설시험소 사원;인천국제공항공사 건설시험소;인천국제공항공사 건설시험소 소장;
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| 초 록 |
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| Piezocone Penetration Test has been performed in the soft ground over the site preparation area at Inchon International Airport(IIA). With the pore pressure dissipation test results, the changes in the permeability and the coefficient of consolidation in clayey soil were checked and the differences of the undrained shear stength verified the soft ground improvement effect from vane test and piezocone test both before and after the improvement. From the results, thin sand seam was found and this caused a big difference in the coefficient of permeability and consolidation. The coefficient of consolidation was high in the upper marine deposit and relatively low in lower marine deposit. It was found that the reduction of void ratio by preloading resulted in the reduction of coefficient of consolidation after the ground improvement. In addition, there were some variations of undrained shear strength when the number of 15 or 18 was used as the coefficient of piezocone(Nkt). However, when the average value of undrained shear strength calculated using Nkt=10 was applied, the result indicated the similar average value with the result of vane test and the increasing rate of strength( Δsu/Δ$sigma$≒0.38) also showed the similar distribution. |
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| 키워드 |
| Pore pressure dissipation;Coefficient of consolidation;Undrained shear strength; |
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한국지반공학회논문집 / v.16, no.2, 2000년, pp.115-123
한국지반공학회
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920441088)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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