소산 실험을 이용한 관입 장비의 교란 효과 추정Evaluation of Disturbance Effect of Penetrometer by Dissipation Tests
- Other Titles
- Evaluation of Disturbance Effect of Penetrometer by Dissipation Tests
- Authors
- 윤형구; 홍성진; 이우진; 이종섭
- Issue Date
- 2008
- Publisher
- 대한토목학회
- Keywords
- 압밀; CPT; DMT; 유효 반경; 현장 속도 프로브; 간극수압 소산; consolidation; CPT; DMT; effective radius; field velocity probe; pore pressure dissipation
- Citation
- 대한토목학회 논문집C, v.28, no.6, pp.339 - 347
- Indexed
- KCI
- Journal Title
- 대한토목학회 논문집C
- Volume
- 28
- Number
- 6
- Start Page
- 339
- End Page
- 347
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124769
- ISSN
- 1015-6348
- Abstract
- The penetration of the probe produces the excess pore pressure due to the disturbance. The objective of this study is to evaluate the disturbance zone by using the dissipation of the excess pore water pressure, which was generated due to the penetration of the penetrometer with different size. The CPT, DMT and FVP (Field Velocity Probe) are adopted for in-situ tests. The tests are carried out in the construction site of north container pier of Busan new port, Korea where is accelerating the consolidation settlement using plastic board drains (PBD) and surcharges by crushed gravels. The coefficient of consolidation (Ch) and soil properties are deduced by the laboratory test. The in-site tests are performed after the predrilling the surcharge zone at the point of 90% degree of consolidation. To minimize the penetration effect, the horizontal distance between penetration tests is 3m, the change of the pore pressure is monitored at the fixed depth of 24m. The coefficient of consolidation (Ch) and the t50s are calculated based on the laboratory test and the in-situ data, respectively. The equvalent radi based on the t50 shows that the FVP and the DMT produce the smallest and the greatest equivalent radi, respectively.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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